User Manual: Programmable Controller

pCO5
programmable controller
User Manual
NO POWER
& SIGNAL
CABLES
TOGETHER
READ CAREFULLY IN THE TEXT!
I n t e g r a t e d C o n t r o l S o l u t i o n s & E n e r g y S a v i n g s
ENG
WARNINGS DISPOSAL
CAREL bases the development of its products on decades of experience INFORMATION FOR USERS ON THE CORRECT HANDLING OF WASTE
in HVAC, on the continuous investments in technological innovations ELECTRICAL AND ELECTRONIC EQUIPMENT (WEEE)
to products, procedures and strict quality processes with in-circuit and
functional testing on 100% of its products, and on the most innovative In reference to European Union directive 2002/96/EC issued on 27 January
production technology available on the market. CAREL and its subsidiaries 2003 and related national legislation, please note that:
nonetheless cannot guarantee that all the aspects of the product and the 1. WEEE cannot be disposed of as municipal waste and such waste must
software included with the product respond to the requirements of the final be collected and disposed of separately.
application, despite the product being developed according to start-of-the- 2. The public or private waste collection systems defined by local
art techniques. legislation must be used. In addition, the equipment can be returned
The customer (manufacturer, developer or installer of the final equipment) to the distributor at the end of its working life when buying new
accepts all liability and risk relating to the configuration of the product in equipment.
order to reach the expected results in relation to the specific final installation 3. The equipment may contain hazardous substances: the improper use or
and/or equipment. incorrect disposal of such may have negative effects on human health
CAREL may, based on specific agreements, acts as a consultant for the positive and on the environment.
commissioning of the final unit/application, however in no case does it accept 4. The symbol (crossed-out wheeled bin) shown on the product or on the
liability for the correct operation of the final equipment/system. packaging and on the instruction sheet indicates that the equipment
has been introduced onto the market after 13 August 2005 and that it
The CAREL product is a state-of-the-art product, whose operation is specified must be disposed of separately.
in the technical documentation supplied with the product or can be 5. In the event of illegal disposal of electrical and electronic waste, the
downloaded, even prior to purchase, from the website www.carel.com. penalties are specified by local waste disposal legislation.
Each CAREL product, in relation to its advanced level of technology, requires
setup/configuration/programming/commissioning to be able to operate in Warranty on materials: 2 years (from the date of production, excluding
the best possible way for the specific application. The failure to complete such consumables).
operations, which are required/indicated in the user manual, may cause the
final product to malfunction; CAREL accepts no liability in such cases. Approval: the quality and safety of CAREL INDUSTRIES Hq products are
Only qualified personnel may install or carry out technical service on the guaranteed by the ISO 9001 certified design and production system, as well
product. as by product marking.
The customer must only use the product in the manner described in the
documentation relating to the product.
In addition to observing any further warnings described in this manual, the

following warnings must be heeded for all CAREL products:
• Prevent the electronic circuits from getting wet. Rain, humidity and all
types of liquids or condensate contain corrosive minerals that may damage
the electronic circuits. In any case, the product should be used or stored
in environments that comply with the temperature and humidity limits
specified in the manual.
• Do not install the device in particularly hot environments. Too high
temperatures may reduce the life of electronic devices, damage them and
deform or melt the plastic parts. In any case, the product should be used
or stored in environments that comply with the temperature and humidity
limits specified in the manual.
• Do not attempt to open the device in any way other than described in the
manual.
• Do not drop, hit or shake the device, as the internal circuits and mechanisms
may be irreparably damaged.
• Do not use corrosive chemicals, solvents or aggressive detergents to clean
the device.
• Do not use the product for applications other than those specified in the
technical manual.
All of the above suggestions likewise apply to the controllers, serial boards,
programming keys or any other accessory in the CAREL product portfolio.
CAREL adopts a policy of continual development. Consequently, CAREL WARNING: separate as much as possible the probe and digital input cables
reserves the right to make changes and improvements to any product from the cables carrying inductive loads and power cables to avoid possible
described in this document without prior warning. electromagnetic disturbance. Never run power cables (including the electrical
panel cables) and signal cables in the same conduits.
The technical specifications shown in the manual may be changed without
prior warning. NO POWER
& SIGNAL
The liability of CAREL in relation to its products is specified in the CAREL general CABLES
TOGETHER
contract conditions, available on the website www.carel.com and/or by
specific agreements with customers; specifically, to the extent where allowed READ CAREFULLY IN THE TEXT!
by applicable legislation, in no case will CAREL, its employees or subsidiaries
be liable for any lost earnings or sales, losses of data and information, costs of
replacement goods or services, damage to things or people, downtime or any
direct, indirect, incidental, actual, punitive, exemplary, special or consequential
damage of any kind whatsoever, whether contractual, extra-contractual or
due to negligence, or any other liabilities deriving from the installation, use or
impossibility to use the product, even if CAREL or its subsidiaries are warned
of the possibility of such damage.
“pCO5” +0300009EN rel. 1.0 - 13.11.2011 3

ENG
Content
1. INTRODUCTION AND GENERAL FEATURES 7

1.1 Programmability .................................................................................................7
2. PRODUCT DESCRIPTIONS 8
2.1 pCO5 controller ...................................................................................................8
2.2 Meaning of the pCO5 inputs/outputs .................................................9
2.3 pCO5 technical specifications ...............................................................10
2.4 Dimensions .........................................................................................................15
2.5 pCO compact ....................................................................................................16
2.6 Meaning of the pCO5 compact inputs/outputs...........................16
2.7 pCO5 compact compact technical specifications ......................17
2.8 pCO5 compact dimensions .......................................................................19
3. USER TERMINALS AND OPTIONAL CARDS 20

3.1 Graphic terminals ........................................................................................20
3.2 Optional cards for pCO sistema .............................................................21
3.3 Connectors..........................................................................................................25
4. PCO CONTROLLER INSTALLATION 26

4.1 General installation instructions ............................................................26
4.2 Power supply .....................................................................................................26
4.3 Connecting the analogue inputs ..........................................................27
4.4 Fast digital inputs ............................................................................................28
4.5 Connecting the digital inputs .................................................................30
4.6 Connecting the analogue outputs ......................................................32
4.7 Connecting the digital outputs..............................................................34
5. PLAN NETWORK CONFIGURATION 36

5.1 Introduction .......................................................................................................36
5.2 pGDE/pGD1 terminal installation .........................................................38
5.3 pLAN address configuration on pCO5 and pCO5 compact 39
5.4 pLAN electrical connections on the pCO ........................................41
5.5 Remote terminal with pLAN network ................................................42
5.6 pLAN network technical specifications.............................................43
6. PCO5 SERIAL CONNECTIONS 44

5 3
6.1 pCO serial connections: differences compared to pCO ....44
7. UPDATES, FIRMWARE AND LOG FILES FOR PCO

CONTROLLERS 54
7.1 pCO Manager ....................................................................................................54
7.2 USB port (on pCO5 and pCO5 compact models where featu-
red) 54
7.3 Smartkey ...............................................................................................................58
7.4 NAND Flash memory ...................................................................................59
7.5 Checking the software installed on the pCO and other infor-
mation..............................................................................................................................59
8. GENERAL CONNECTION DIAGRAMS 60

8.1 pCO5 .......................................................................................................................60
8.2 pCO5 with built-in EVD evo .......................................................................61
9. TROUBLESHOOTING 62
“pCO5” +0300009EN rel. 1.0 - 13.11.2011 5

ENG
1. INTRODUCTION AND GENERAL FEATURES
pCO sistema: CAREL’s proposal for programmable controllers. Hardware architecture
It consists of programmable controllers, user interfaces, gateways and The pCO architecture features:
communication interfaces, and remote management systems to offer • the pCO controller, fitted with a 32-bit microprocessor for running the
the HVAC/R market a control system that’s powerful, flexible and easy control program, and the set of terminals required for connection to
to interface to the most commonly-used building management systems. the controlled devices (for example: valves, compressors, fans). The
pCO sistema is very reliable and can be easily customised to differentiate program and the parameters are saved permanently in the FLASH
the air-conditioning or refrigeration unit control system. memory, preventing data loss in the event of power failure (without
requiring a backup battery). The pCO also allows connection to a local
All versions of these controllers use a 32-bit microprocessor and either pLAN network made up of a series of pCO boards and terminals. Each
4 or 8 MBytes of memory so as to ensure high performance in terms of board can exchange information (any variable, digital or analogue,
speed and memory space available. The pCO sistema controllers also according to the application software) at high transmission speeds.
come in different sizes according to the number of inputs and outputs, connection to the supervisor/telemaintenance serial line, over the
giving the best price/performance ratio. Given the increasing need for RS485 standard, is made using the optional serial cards (PCO004850)
integration, the pCO sistema family controllers can interface with some and the CAREL or Modbus® communication protocol.
of the most commonly-used serial communication standards, and when • The terminal, also managed by microprocessor, fitted with display,
fitted with optional cards can be integrated into BMS systems. keypad and LEDs to allow the programming of the control parameters
The pCO* family can connect different types of sensors (e.g. ratiometric, (set point, differential band, alarm thresholds) and basic functions by
NTC, 4 to 20 mA, etc.); a built-in terminal is available; there are one or two the user (ON/OFF, display of the controlled values, optional printing).
serial ports (depending on the model) to offer connection to controlled The terminal does not have to be connected to the pCO for normal
field devices (valves, I/O expansions, electronic valve drivers…). In operation, but can be used for the initial programming of the funda-
addition, on models where featured, the controllers have 2 USB ports for mental parameters.
uploading and downloading files.
All these features place our controllers at a level of excellence in fulfilling The power of the application software means that the user terminal
the needs of the HVAC/R market. allows:
• initial programming of the unit, with password-protected access;
• the possibility to modify, at any time, the fundamental operating
parameters, optionally protected by password;
• display and audible signalling (by buzzer) of any alarms;
1.1 Programmability • display of the active functions by LED;
• display of all the values measured.
The CAREL pCO sistema controllers can be programmed using 1Tool
development software, offering the following advantages:
• software portability on different CAREL hardware. applications
developed for the pCO can be simply and quickly transferred to
another hardware platform and vice-versa, modifying only the inputs
and outputs;
• rapid development, at competitive costs, of custom programs;
• reliability guaranteed by the use of standard routines, tested in the
field.
The use of 1Tool, moreover, ensures the customer the maximum level of
privacy and self-management when developing new programs on their
own. The possibility to use the same hardware for different applications
allows standardisation, with the clear advantages of being able to feature
in-circuit and functional testing and burn-in procedures on all of the
products and consequently reach a high level of reliability, both overall
and in terms of the individual electronic components.
1Tool: exclusive, easy to use CAREL development software for
programming, simulation, supervision and definition of pLAN networks
using CAREL terminals and pCO programmable controllers.
Applications
The programmability of the pCO ensures absolute flexibility of application.
The same standard hardware can be used to control:
• chillers and heat pumps;
• roof-top units;
• air-conditioners;
• small/medium-sized air handling units (on request);
• showcases (on request and to specifications);
• cold rooms (on request and to specifications);
• curing rooms;
• compressor racks;
• universal stage controllers.
Other types of programs can be developed to specific customer
requirements.
“pCO5” +0300009EN rel. 1.0 - 13.11.2011 7

NO6
8
rd
C4
ENG
G
J1
1 G0 9
J9
7 C14
Large Version
NO14
max. power: 45 VA/20 W

NO15
J21
+Vterm
C21 NO16
input: 24 V 50...60 Hz / 28...36 V

10
ExtraLarge Version
GND
J24
J10
NO21 C14
3
NO22 +5 VREF
J19
NO23 15
NO24 B1
13
J11 pLAN
C21 C17
B2
2.1 pCO5 controller
NO17
J2
B3
NO18 4
GND
J22
NO19
Fig. 2.a
Fig. 2.b
16
NO20 +VDC
C17 B4
“pCO5” +0300009EN rel. 1.0 - 13.11.2011

BC4 17
J3
C25
FieldBus card
5 B5
J25 BMS2 J26 FBus2
NO25
BC5
NO26 11 18
NO27
J20
J23 FBus2
12 2
NO28 C1
NO29
NO1
C25 14 NO2
J12
VG
VG0 NO3
Y1 C1
J4
6 Y2 C4
Y3 NO4
Y4 NO5
J13
ID1 NO6
BMS card
Y3 NO4
ID2 C4
Y4 NO5
J13
ID1 NO6 ID3
19
al card
C7
ID2 C4 ID4
NO7
J14
J5
ID3 ID5
7 NO14 C7
ID4 ID6
C14
J5
ID5 NO8
ID7
ID6 NC14
C8
ID8
J21
J15
ID7 NO8 ID15H

11
NO15
NC8
C8 IDC1
J15
ID8 ID15 C15
IDC1 NC8
J19
B6 IDC15 NC15
2. PRODUCT DESCRIPTIONS
B6 B7 ID16
J6
Version with VALVE DRIVER

VBAT 8
B7 4 B8 ID16H
G0
J6
C9
J30
B8 22
J16
G C9 GND
GND 1 NO9
C16
NO9 ID9
3 NO10
ID9
J27
NO16
Fig. 2.c
2 NO10 ID10
J16
ID10 NO11
4 NO11 NO17
J7
J22
ID11
ID11 7 C9
J7
C9 NO18
ID12 ID12
Y5 11
ICC9
C16
IDC9 NO12
20 NO12 Y6 6
C12 C12
J17
ID13H GND ID13H B9
J17
ID13 VREF NC12 NC12

1 ID13 BC9
IDC13 S1
J20
J8
NO13 IDC13 B10 5
S2
J28
ID14 NO13
2 8
J29
S3 C13
J18
ID14 BC10
J23 FBus2
ID14H
21 4
12 C13
S4 NC13
J18
ID14H ID17
DI1 NC13
ID18
J8
DI2 7
driver
IDC17
ENG
Key
1. power supply connector [G (+), G0 (-)];
2. pLAN address button, 7 segment display and LED (power on and J8-2 ID13 digital input 13, 24 Vac or 28 to 36Vdc
overload, +Vdc terminal); J8-3 IDC13 common for digital inputs 13 and 14 (negative pole
3. additional power supply for the terminal and 0 to 5 V ratiometric for DC power supply)
probes; J8-4 ID14 digital input 14, 24 Vac or 28 to 36Vdc
4. universal analogue inputs, NTC, 0 to 1 V, 0 to 5 V ratiometric, 0 to J8-5 ID14H digital input 14, 230 Vac
10 V, 0 to 20 mA, 4 to 20 mA; J9 8-pin telephone connector for connecting a display
5. passive analogue inputs, NTC, PT1000, ON/OFF; terminal
6. 0 to 10 V analogue outputs; J10 6-pin telephone connector for connecting the
7. 24 Vac or 28 to 36 Vdc digital inputs; standard user terminal
8. 230 Vac or 24 Vac or 28 to 36 Vdc digital inputs; J11-1 RX-/TX- RX-/TX- connector for RS485 connection to the pLAN
9. display terminal connector (external panel with direct signals); network
10. connector for all standard pCO series terminals and for J11-2 RX+/TX+ RX+/TX+ connector for RS485 connection to the
downloading the application program; pLAN network
J11-3 GND GND connector for RS485 connection to the pLAN
11. relay digital outputs;
network
12. fieldbus2 connector;
J12-1 C1 common for relays: 1, 2, 3
13. pLAN network connector; J12-2 NO1 normally open contact, relay 1
14. cover for inserting the supervisor serial card option (BMS1); J12-3 NO2 normally open contact, relay 2
15. cover for inserting the field card option (Fieldbus1); J12-4 NO3 normally open contact, relay 3
16. BMS2 connector; J12-5 C1 common for relays: 1, 2, 3
17. Fieldbus2 connector; J13-1 C4 common for relays: 4, 5, 6
18. Built-In terminal (LCD, buttons and LEDs); J13-2 NO4 normally open contact, relay 4
19. USB Host and Slave connector J13-3 NO5 normally open contact, relay 5
20. electronic valve connector J13-4 NO6 normally open contact, relay 6
21. valve driver analogue and digital inputs J13-5 C4 common for relays: 4, 5, 6
22. valve driver power supply from Ultracap module EVD0000UC20 J14-1 C7 common for relay 7
(external to pCO5) J14-2 NO7 normally open contact, relay 7
J14-3 C7 common for relay 7
J15-1 NO8 normally open contact, relay 8
J15-3 NC8 normally closed contact, relay 8
J16-1 C9 common for relays: 9, 10, 11
2.2 Meaning of the pCO5 inputs/outputs J16-2 NO9 normally open contact, relay 9
Conn. Signal Description J16-4 NO11 normally open contact, relay 11
J1-1 G +24 Vdc or 24 Vac power supply J16-5 C9 common for relays: 9, 10, 11
J1-2 G0 power supply reference J17-1 NO12 normally open contact, relay 12
J2-1 B1 universal analogue input 1 (NTC, 0 to 1 V, 0 to 10 V, 0 J17-2 C12 common for relay 12
to 20 mA, 4 to 20 mA) J17-3 NC12 normally closed contact, relay 12
J2-2 B2 universal analogue input 2 (NTC, 0 to 1 V, 0 to 10 V, 0 J18-1 NO13 normally open contact, relay 13
to 20 mA, 4 to 20 mA) J18-2 C13 common for relay 13
J2-3 B3 universal analogue input 3 (NTC, 0 to 1 V, 0 to 10 V, 0 J18-3 NC13 normally closed contact, relay 13
to 20 mA, 4 to 20 mA) J19-1 * ID15H digital input 15, 230 Vac
J2-4 GND common for analogue inputs J19-2 * ID15 digital input 15, 24 Vac or 28 to 36Vdc
J2-5 +VDC 21 Vdc power supply for active probes (maximum J19-3 * IDC15 common for digital inputs 15 and 16 (negative pole
current 200 mA) for DC power supply)
J3-1 B4 passive analogue input 4 (NTC, PT1000, ON/OFF) J19-4 * ID16 digital input 16, 24 Vac or 28 to 36Vdc
J3-2 BC4 common for analogue input 4 J19-5 * ID16H digital input 16, 230 Vac
J3-3 B5 passive analogue input 5 (NTC, PT1000, ON/OFF) J20-1 * Y5 analogue output 5, 0 to 10 V
J3-4 BC5 common for analogue input 5 J20-2 * Y6 analogue output 6, 0 to 10 V
J4-1 VG power to optically-isolated analogue output, 24 Vac or J20-3 * B9 passive analogue input 9 (NTC, PT1000, ON/OFF)
28 to 36 Vdc J20-4 * BC9 common for analogue input 9
J4-2 VG0 power to optically-isolated analogue output, 0 Vac/ -5 B10 passive analogue input 10 (NTC, PT1000, ON/OFF)
Vdc J20-6 * BC10 common for analogue input 10
J4-3 Y1 analogue output 1, 0 to 10 V J20-7 * ID17 digital input 17, 24 Vac or 28 to 36Vdc
J4-4 Y2 analogue output 2, 0 to 10 V J20-8 * ID18 digital input 18, 24 Vac or 28 to 36Vdc
J4-5 Y3 analogue output 3, 0 to 10 V J20-9 * IDC17 common for digital inputs 17 and 18 (negative pole
J4-6 Y4 analogue output 4, 0 to 10 V for DC power supply)
J5-1 ID1 digital input 1, 24 Vac or 28 to 36Vdc J21-1 * NO14 normally open contact, relay 14
J5-2 ID2 digital input 2, 24 Vac or 28 to 36Vdc J21-2 * C14 common for relay 14
J5-3 ID3 digital input 3, 24 Vac or 28 to 36Vdc J21-3 * NC14 normally closed contact, relay 14
J5-4 ID4 digital input 4, 24 Vac or 28 to 36Vdc J21-4 * NO15 normally open contact, relay 15
J5-5 ID5 digital input 5, 24 Vac or 28 to 36Vdc J21-5 * C15 common for relay 15
J5-6 ID6 digital input 6, 24 Vac or 28 to 36Vdc J21-6 * NC15 normally closed contact, relay 15
J5-7 ID7 digital input 7, 24 Vac or 28 to 36Vdc J22-1 * C16 common for relays: 16, 17, 18
J5-8 ID8 digital input 8, 24 Vac or 28 to 36Vdc J22-2 * NO16 normally open contact 16
J5-9 IDC1 common for digital inputs from 1 to 8 (negative pole J22-3 * NO17 normally open contact 17
for DC power supply) J22-4 * NO18 normally open contact 18
J6-1 B6 universal analogue input 6 (NTC, 0 to 1 V, 0 to 10 V, 0 J22-5 * C16 common for relays: 16, 17, 18
to 20 mA, 4 to 20 mA) J19-1 ** C21 common for relays 21, 22, 23, 24
J6-2 B7 universal analogue input 7 (NTC, 0 to 1 V, 0 to 10 V, 0 J19-2 ** NO21 normally open contact 21
to 20 mA, 4 to 20 mA) J19-3 ** NO22 normally open contact 22
J6-3 B8 universal analogue input 8 (NTC, 0 to 1 V, 0 to 10 V, 0 J19-4 ** NO23 normally open contact 23
to 20 mA, 4 to 20 mA) J19-5 ** NO24 normally open contact 24
J6-4 GND common for analogue inputs J19-6 ** C21 common for relays 21, 22, 23, 24
J7-1 ID9 digital input 9, 24 Vac or 28 to 36Vdc J20-1 ** C25 common for relays 25, 26, 27, 28, 29
J7-2 ID10 digital input 10, 24 Vac or 28 to 36Vdc J20-2 ** NO25 normally open contact 25
J7-5 IDC9 common for digital inputs from 9 to 12 (negative pole J20-5 ** NO28 normally open contact 28
for DC power supply) J20-6 ** NO29 normally open contact 29
J8-1 ID13H digital input 13, 230 Vac J20-7 ** C25 common for relays 25, 26, 27, 28, 29
“pCO5” +0300009EN rel. 1.0 - 13.11.2011 9

ENG
Electrical specifications
J21-1 ** C14 common for relays 14, 15, 16
J21-2 ** NO14 normally open contact 14 power supply Versions without built-in valve driver: 24 Vac +10/-
J21-3 ** NO15 normally open contact 15 15% 50 to 60 Hz and 28 to 36 Vdc +10/-20%;
J21-5 ** NO16 normally open contact 16 maximum current 45 VA/20 W
J21-6 ** C14 common for relays 14, 15, 16
J22-1 ** C17 common for relays 17, 18, 19, 20 Version with built-in valve driver with or without
J22-2 ** NO17 normally open contact 17 Ultracap module:
J22-3 ** NO18 normally open contact 18 24 Vac +10/-15% 50 to 60 Hz;
J22-4 ** NO19 normally open contact 19 maximum current: 80 VA/35 W (90VA / 40W when
J22-5 ** NO20 normally open contact 20
Ultracap is charging)
J22-6 ** C17 common for relays 17, 18, 19, 20
J23-1 Tx/Rx- Fieldbus 2 RS485 port - terminal terminal block with male/female plug-in connectors, max voltage
J23-2 Tx/Rx+ Fieldbus 2 RS485 port + terminal 250 Vac; wire size: min. 0.5 mm2 - max 2.5 mm2
J23-3 GND Fieldbus 2 RS485 port GND terminal CPU H8SX1651, 32 bit, 44 MHz
J24-1 +V term power supply to additional Aria terminal FLASH memory 4MB (8MB in the extended versions)
J24-2 GND power supply common Further 32 MB NAND Flash memory available
J24-3 +5 Vref power supply for 0 to 5V ratiometric probes data memory (static 512 kB at 16 bits (296 kB BIOS; 216 kB application).
J25-1 Tx/Rx- BMS 2 RS485 port - terminal RAM)
J25-2 Tx/Rx+ BMS 2 RS485 port + terminal parameter data 13 kB at 16 bits (max limit: 400,000 writes per
J25-3 GND BMS 2 RS485 port GND terminal memory memory location) and further 32 kB of E2prom (not
J26-1 Tx/Rx- Fieldbus 2 RS485 port - terminal available to the pLAN)
J26-2 Tx/Rx+ Fieldbus 2 RS485 port + terminal working cycle duration 0.2 s (typical)
J27-3 GND Fieldbus 2 RS485 port GND terminal (medium complexity
J27-1 1 EXV valve 1 control (see Fig. 7cx)
applications)
J27-2 2
clock with battery standard
J27-3 3
J27-4 4 clock precision 100 ppm
J28-1 1 EXV valve 2 control (see Fig. 7cx) battery specifications lithium button battery code CR2430 voltage 3 Vdc
J28-2 2 (dimensions 24x3 mm)
J28-3 3 Tab. 2.c
J28-4 4 The versions with valve driver, with or without Ultracap module, have the
J29-1 GND built-in EVD evo probe power supply common same number, type and configuration of I/Os as the Medium version.
J29-2 VREF built-in EVD evo probe power supply
J29-3 S1 built-in EVD evo probe 1
J29-7 DI1 built-in EVD evo digital input 1 Digital inputs
J29-8 DI2 built-in EVD evo digital input 2
J30-1 VBAT external valve power supply from Ultracap module type ID1 to ID18 optically-isolated (contact live); B4, B5, B9,
J30-2 G0 (see inst. sheet +0500042IE) B10 not optically-isolated (voltage-free contact)
J30-3 G maximum number 8: SMALL; 14: MEDIUM e EXTRALARGE; 18: LARGE.
Tab. 2.a of optically-isolated According to the combinations shown below:
voltage inputs no. opto- no. opto- total
isolated in. isolated in. @ inputs
@ 24 Vac 24 Vac or 28-
*: J19, J20, J21, J22 correspond to the “LARGE” model. 50/60 Hz 36 Vdc
**: J19, J20, J21, J22 correspond to the “EXTRALARGE” model. or 24 Vdc or 230 Vac
(50/60 Hz)
SMALL 8 none 8
MEDIUM/ 12 2 14
EXTRALARGE
LARGE 14 4 18
2.3 pCO5 technical specifications
minimum digital Normally open (open-closed-open) 200 ms
input impulse Normally closed (closed-open-closed) 400 ms
Physical specifications detection time
maximum number of voltage-free 2: SMALL, MEDIUM and EXTRALARGE
dimensions SMALL version installable on 13 DIN modules, 110 x 227.5 x
contact inputs, not optically-isolated (B4 and B5);
60 mm;
4: LARGE (B4, B5, B9, B10)
MEDIUM, LARGE and EXTRALARGE versions installable on Classification of measuring circuits (IEC Category I (J5, J7, J20) 24 Vac or 28 to
18 DIN modules, 110 x 315 x 60 mm;version with ULTRACAP EN 61010-1) 36 Vdc - Category III (J8, J19) 230 Vac
MODULE installable only on the 18 module models with Digital input current draw, voltage- 5 mA
valve driver incorporated, 110 x 315 x 75 mm free (B4, B5, B9, B10)
assembly DIN rail Digital input current draw with 24 5 mA
Tab. 2.b Vac voltage signal
Digital input current draw with 230 5 mA
Plastic case Vac voltage signal
• fitted on DIN rail in accordance with DIN 43880 and IEC EN 50022; Tab. 2.d
• material: technopolymer; WARNINGS:
• flammability: V2 (UL94) and 850 °C (in accordance with IEC 60695); • IDH digital inputs at 230 Vac 50/60 Hz (10/-15%) protected by just one
• ball pressure test: 125 °C; 500 mAT fuse;
• resistance to creeping current: ≥250 V; • the two 230/24 Vac inputs on J8 and J12 have the same common pole
• colour: grey RAL7035; and therefore both will be 24 Vac or 28 to 36Vdc, or 230 Vac. There is
double insulation between the two inputs and the rest of the controller.
• for DC digital inputs (28 to 36 Vdc), either the + or the - can be
connected to the common (IDC1).
• the rating of the external contact connected to the digital inputs must
be at least 5 mA.
10 “pCO5” +0300009EN rel. 1.0 - 13.11.2011

ENG
Note: separate as much as possible the probe signal and digital
input cables from the inductive load and power cables, to avoid WARNINGS: the 21 Vdc available at terminal +Vdc (J2) can be used
possible electromagnetic disturbance. to power any active probes; the maximum current is 150 mA, protected
against short-circuits. To power the 0 to 5 Vdc ratiometric probes, use the
+5VREF (Imax: 60 mA) available at terminal J24. Only use these voltages to
power the active probes connected to pCO5
Fast digital input specifications (B4 and B5, voltage-free
contact)
When configured as fast digital inputs, B4 and B5 can measure a signal
with a maximum frequency of 2 KHz and a resolution of ±1 Hz. This Analogue outputs
is possible as the BIOS provides the application program two pairs type 0 to 10 Vdc optically-isolated on Y1, Y2, Y3, Y4, Y5 and
of variables that count the zero crossing of the input signal and the Y6 / phase control on Y3 and Y4
maximum number 4: SMALL, MEDIUM and EXTRALARGE ; 6: LARGE
corresponding frequency in Hz. power supply external 24 Vac or 28 to 36 Vdc on VG(+), VG0(-)
Note: see details in paragraph 4.4 resolution 8 bit
maximum load 1.5 kΩ (7 mA)
precision ± 2 % of full scale on outputs: Y1, Y2, Y3, Y4, Y5 and Y6
Analogue inputs Tab. 2.f
analogue conversion 10 bit A/D converter CPU built-in
type universal: (inputs B1, B2, B3, B6, B7, B8) CAREL WARNINGS:
NTC temperature sensor (-50T90 °C; R/T 10 kΩ at • A 0 to 10 Vdc analogue output can be connected in parallel to other
25°C), HT NTC0T150 °C, voltage: 0 to 1 Vdc, 0 to 5 V outputs of the same type, or alternatively to an external source of
ratiometric or 0 to 10 Vdc, current: 0 to 20 mA or 4 voltage. The higher voltage will be considered. Correct operation is not
to 20 mA, selectable via software. Input resistance guaranteed if actuators with voltage inputs are connected. Power the
in 0 to 20 mA= 100Ω VG-VG0 analogue outputs at the same voltage on G-G0: connect G to
passive: (inputs B4, B5, B9, B10) CAREL NTC temp.
VG and G0 to VG0. This is valid for both alternating and direct current
sensor (see universal), PT1000 (-100T200 °C; R/T
power supplies.
1000 Ω at 0°C) or voltage-free digital input (5 mA),
selectable via software; • For phase control outputs (PWM), note that synchronicity (zero
maximum number 5: SMALL; 8: MEDIUM e EXTRALARGE; 10: LARGE crossing) is taken from G/G0 and only with 24 Vac power supply (not
time constant for each 0.5 s Vdc).
input
precision ± 0.3 % of full scale
classification of Category I
measuring circuits (IEC
EN 61010-1)
input impedance NTC 10 KΩ
4 to 20 mA 100 Ω
0 to 1 V 100 KΩ
0 to 5 V 20 KΩ
0 to 10 V 12,7 KΩ
PT1000 10 KΩ
Tab. 2.e
“pCO5” +0300009EN rel. 1.0 - 13.11.2011 11

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Digital outputs
type relay
maximum 8: SMALL; 13: MEDIUM; 18: LARGE; 29: EXTRALARGE
number
For the connections see Fig. 2.a and 2.b (reference NO*, NC* and C*).
Note that outputs with changeover contacts are kept separate (i.e.
without poles shared between outputs). The groups of 3 outputs have 2
“common” contacts for easier installation.
Make sure that the current running through the common terminals
does not exceed the rated current of an individual terminal, that is, 8 A.
Minimum relay contact current: 50 mA.
Insulation distance The relay outputs have different features, depending on the model of pCO5. The outputs can be divided into groups. Between
groups (cells in the table) there is double insulation and consequently these may have different voltages. There is also double
insulation between each terminal of the digital outputs and the rest of the controller. The relays belonging to the same group
(individual cell in the table) have basic insulation and therefore must have the same power supply (24 Vac or 230 Vac).
Makeup of the groups version relays with same insulation
group 1 group 2 group 3 group 4 group 5 group 6 group 7 group 8 group 9 group 10 group 11
SMALL 1 to 3 4 to 6 7 8 - - - - - - -
Type of relay Type A Type A Type A Type A
MEDIUM 1 to 3 4 to 6 7 8 9 to 11 12 13 - - - -
Type of relay Type A Type A Type A Type A Type A Type A Type A
LARGE 1 to 3 4 to 6 7 8 9 to 11 12 13 14 to 15 16 to 18 - -
Type of relay Type A Type A Type A Type A Type A Type A Type A Type A Type A
EXTRALARGE 1 to 3 4 to 6 7 8 9 to 11 12 13 14 to 16 17 to 20 21 to 24 25 to 29
Type of relay Type A Type A Type A Type A Type A Type A Type A Type B Type B Type B Type B
NOTE: the relays in the individual cells of the table have basic insulation, while there is double insulation between groups of cells.
Changeover contacts 1: SMALL (relay 8); 3: MEDIUM and EXTRALARGE (relay 8, 12 and 13); 5: LARGE (relay 8, 12, 13, 14 and 15)
Switchable power warning: the relay outputs have different features, depending on the model of pCO5
type A relay type of relay: SPDT, 2000 VA, 250 Vac, 8 A resistive
pCO5 approval: UL6030: 2A 250 Vac resistive, C300 pilot duty 240 Vac (30.000 cycles)
EN 60730-1: 2 A resistive, 2 A inductive, cosφ= 0.6, 2(2) A (100.000 cycles)
type B relay type of relay:: SPDT, 1250 VA, 250 Vac, 5 A resistive
(EXTRALARGE pCO5 approval: UL6030: 1A 250 Vac resistive, C300 pilot duty 240 Vac (30.000 cycles)
models only) EN 60730-1: 1 A resistive, 1 A inductive, cosφ= 0.6, 1(1) A (100.000 cycles)
SSR outputs(optional on 1: SMALL (output 7); 2: MEDIUM and EXTRALARGE (outputs 7 and 12); 3 or 4: LARGE (outputs 7, 12 and 14 or 7, 12, 14 and 15)
models where featured) Working voltage: 24 Vac/Vdc; maximum load current = 0.5A; maximum impulsive load current = 1.2A.
If the load requires higher current, use an external SSR.
To power external loads, use the same power supply as the pCO (connected to terminals G/G0); as specified by Carel, this must always be dedicated
and not in common with the power supply to other devices on the electrical panel (such as contactors, coils, etc.). Make sure that the load
connection cables are as short as possible and away from power cables.
Tab. 2.g
Plug-in connectors pLAN network/user terminal connection

Electrical specifications of the plug-in connectors used: type asynchronous half duplex RS485
Type of connector Pitch 5.08 transmission speed 62.5 Kbps or 115.2 Kbps selectable
Rated voltage 250 V via software
Rated current 12 A pGD0, pGD1 terminal connector 6-pin telephone (J10)
Cable size 0.25 mm2 - 2.5 mm2 (AWG: 24 to 12) pLAN network/other terminal 3-pin plug-in connector (J11)
Stripping length 7 mm connector
Screw thread size M3 maximum number of units 32
Tightening torque 0.5-0.6 Nm connectable
Tab. 2.h Tab. 2.j
The maximum distance between the pCO and the user terminal is shown
Cable AWG and size cross-reference in the following table.
type of cable power supply power supply
AWG Size (mm2) Current distance
20 0.5 2 telephone 10 m taken from pCO (150 mA)
15 1.5 6 AWG24 shielded cable 200 m taken from pCO (150 mA)
14 2.5 8 AWG20/22 shielded cable 500 m separate power supply via
Tab. 2.i TCONN6J000
Tab. 2.k
pCO5 serial connections The maximum distance between two pCO5 devices with AWG20/22
There are three types of serial connections: shielded cable is 500 m.
• pLAN
• BMS
• FieldBus Note:
The FieldBus serial card features Master hardware and so BMS Slave • J10 can only be connected to one terminal (pCOT, pCOI, pGD0, pGD1)
devices must be connected to it. The protocols used for FieldBus are or two terminals when the backlighting for the display is not activated.
generally Master (Carel or ModBus®) however Slave can also be used • Except PGD0 and PGD1 terminals, the other terminals should be
(Carel or Modbus®). The opposite is also true: Slave protocols will be used always powered with separate power supplies.
on the BMS (Slave hardware) however Master is also possible. • The 21 Vdc available at +Vterm (J24) can be used to power an external
terminal as an alternative to the one connected to terminal J10, with
Note: for details see paragraph 5.7 maximum current 1.5 W.
12 “pCO5” +0300009EN rel. 1.0 - 13.11.2011

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Version with electronic expansion valve driver Example application:
The pCO5 Medium size features an optional new integrated solution:
the version with built-in EVDevo driver, single or twin. The driver card is
housed on the pCO5 in the socket provided for the inputs / outputs on
the Large size board, hence the reason it’s only available on the pCO5
Medium (not Small, Large, nor ExtraLarge) and doesn’t require an external
power supply.
The built-in driver replicates all the hardware and functions logical of
the “EVDevolution TWIN” driver, i.e. independently controls one or two
electronic expansion valves with two-pole stepper motors. The only
difference between the two versions is the absence of the relay output.
For details on the valve control logic, setup and installation see the
EVDevo manual (code + 0300005EN).
In the same way as EVDevo, on the pCO5 the integrated driver is available
in the CAREL and Universal versions. The “Universal” models are used to
control both CAREL electronic expansion valves and products made by
other manufacturers (see the table below), while the CAREL models only
manage CAREL valves.
Valve compatibility table

Manufacturer Compatible models
E*V****
CAREL
EX4; EX5; EX6; EX7; EX8 330 Hz (recommended by
ALCO
CAREL); EX8 500 Hz (from ALCO specifications)
SPORLAN SEI 0.5-11; SER 1.5-20; SEI 30; SEI 50; SEH 100; SEH175
Danfoss ETS 12.5-25B; ETS 50B; ETS 100B; ETS 250; ETS 400
CAREL Two CAREL EXVs connected together
SER(I) G, J, K
SPORLAN Fig. 2.d
Tab. 2.l
To ensure efficient data exchange between the driver EVDevo and
This version of pCO5 Medium with built-in EVDevo driver can be the pCO5, when developing the 1Tool application, if there are devices
integrated with the energy storage module (PCOS00UC20), made using connected to the FBus2 port (terminal J26) using the Modbus® protocol,
special capacitor technology called Ultracapacitor, so as to ensure the the number of variables exchanged in total over the serial line should be
electronic valve closes in the event of power failures. The module only evaluated.
powers the driver and not the pCO5 this in integrated into.
Warning: the pCO5 with valve driver and PCOS00UC20, EVD0000UC0 or

EVBAT00400 module must be powered at 24 Vac so that emergency valve Electrical connections
closing is ensured in the event of power failures. To simplify installation of the pCO5 with integrated EVDevo, the power
supply G-G0 at the base of the pCO5 is connected internally, using
a shielded cable, to the EVDevo: the driver thus does not need to be
powered independently.
Serial communication and programming
It’s recommended to keep the digital and analogue input cables separate
Communication between the pCO5 and its built-in EVDevo driver is
from the valve power cable. All the analogue and digital inputs are
managed internally using the Fieldbus2 serial port. The FieldBus2 serial
earthed to GND, and consequently the application, even temporary, of
port (J26) is however electrically insulated from the driver serial line:
voltages exceeding ±5 V to these connections may cause irreversible
this ensures that in the event of external faults on the line connected
damage to the driver. As GND is the common earth for all the inputs, this
to FBus2, the internal driver can continue working independently and
should be replicated on the terminal block.
correctly.
The driver can only be configured exclusively using the pCO5 application
developed in 1Tool, no external displays are available for the EVDevo.
The 1tool development environment features a module for managing

the EVDevo: the same module can be used to manage the internal driver,
as if it were managing an external EVDevo connected to the FBus2 port.
pCO5 Medium manages the integrated driver board as an EVDevo Twin

external connected to Field Bus 2. At a 1Tool application program level,
the valve driver must be connected to FBus2. Consequently, any other
devices physically connected to the Fbus port (J26) must have the same
communication protocol (CAREL Standard Master or Modbus® Master),
the same baud-rate, stop bits and parity.
It must also be remembered that the address of the internal driver is 198
(default for EVDevo), so any other devices connected to J26 must have
an address other than 198. External EVDevo drivers can be connected to
FieldBus 1 (optional card) without limits.
“pCO5” +0300009EN rel. 1.0 - 13.11.2011 13

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Technical specifications
Motor connection shielded 4-wire cable CAREL code E2VCABS*00, or AWG22 shielded 4-wire cable Lmax =10 m, or AWG14 shielded 4-wire cable Lmax = 50
m
Digital input Digital input to be activated with voltage-free contact or transistor to GND. Closing current 5 mA; Maximum length < 10 m
connection
Probes maximum length 10 m or less than 30 m with shielded cable
S1 ratiometric pressure probe (0 to 5 V) resolution 0.1 % FS measurement error: 2% FS maximum; 1% typical
electronic pressure sensor (4 to 20 mA) resolution 0.5 % FS measurement error: 8% FS maximum; 7% typical
combined ratiometric pressure probe (0 to 5 V) resolution 0.1 % FS measurement error: 2 % FS maximum; 1 % typical
4 to 20 mA input (max. 24 mA) resolution 0.5 % FS measurement error: 8 % FS maximum; 7 % typical
S2 low temperature NTC 10 kΩ at 25 °C, -50T90 °C measurement error: 1°C in the range -50T50 °C; 3 °C in the range +50T90 °C
high temperature NTC 50 kΩ at 25 °C, -40T150 °C measurement error: 1.5 °C in the range -20T115 °C, 4 °C in range outside of
-20T115 °C
combined NTC 0 kΩ at 25 °C, -40T120 °C measurement error: 1°C in the range -40T50 °C; 3 °C in the range +50T90 °C
0 to 10 V input (max 12 V) resolution 0.1% FS measurement error: 9% FS maximum; 8% typical
S3 ratiometric pressure probe (0 to 5 V): resolution 0.1 % FS measurement error: 2% FS maximum; 1% typical
electronic pressure sensor (4 to 20 mA) resolution 0.5 % FS; measurement error: 8% FS maximum; 7% typical
combined ratiometric pressure probe (0 to 5 V) resolution 0.1 % FS measurement error: 2 % FS maximum; 1 % typical
4 to 20 mA input (max. 24 mA) resolution 0.5 % FS measurement error: 8 % FS maximum; 7 % typical
S4 low temperature NTC 10 kΩ at 25 °C, -50T105 °C; measurement error: 1 °C in the range -50T50 °C; 3°C in the range 50T90 °C
high temperature NTC 0 kΩ at 25 °C, -40T150 °C measurement error: 1.5 °C in the range -20T115 °C; 4 °C in range outside of
-20T115 °C
combined NTC 10 kΩ at 25 °C, -40T120 °C measurement error 1 °C in the range -40T50 °C; 3 °C in the range +50T90 °C
Power to active programmable output: +5 Vdc+/-2% or 12 Vdc+/-10%
probes (VREF)
Emergency power optional Ultracapacitor module (PCOS00UC20 or EVD0000UC0). If the pCO5 operates constantly at temperatures near the upper limit
supply of 60°C it’s recommended to use the external module code EVD0000UC0, where possible located in the coolest point of the panel. The
PCOS00UC20 and EVD0000UC0 modules can be connected at the same time to the same pCO5, thus doubling the energy available to
close the valves. Important: The module only powers the valve driver and not the pCO5.
Indicator LEDs: A (yellow) = Close valve A (J27)

J30 LEDS
J29
B (green) = Open valve A (J27) A B C D
VREF
GND
VBAT
DI1
DI2
G0
S1
S2
S3
S4
G
C (yellow) = Close valve B (J28)

J6 J7 J8
D (green) = Open valve B (J28)
ID13H
ID14H
IDC13
GND
ICC9
ID10
ID11
ID12
ID13
ID14
ID9
B6
B7
B8
• Flashing if the valve is moving.

• On steady if the valve is at the end of travel.
Fig. 2.e
Examples of CAREL codes:
PCO5000000A20: pCO5 medium + EVD EVO embedded for 2 CAREL EXVs
PCO50000U0C20: pCO5 medium + USB + NAND + EVD EVO embedded
for 2 CAREL EXVs
PCO50000U0C60: pCO5 medium + USB + NAND + EVD EVO embedded
for 2 UNIV. EXVs
PCO50000U0F20: pCO5 medium + USB+NAND+PGD1 + EVD EVO
embedded for 2 CAREL EXVs
PCOS00UC20: modulo ultracap, for pCO sistema EVD EVO embedded for
2 CAREL EXVs
pCO5 hardware simulator

For availability of the pCO5 simulator (pCO5 simulator code: CM00002028)
contact CAREL. If the new functions of the pCO5 are not needed, the pCO3
simulator can be used.
Other characteristics
storage conditions -40T70 °C, 90% RH non-condensing no. of automatic operating cycles 100,000 (EN 60730-1); 30,000 (UL 873)
operating conditions -25T60 °C, 90% RH non-condensing software class and structure Class A
index of protection IP20, IP40 on the front panel only (in category of immunity to voltage Category III
the versions without Ultracap module) surges (IEC EN 61000-4-5)
environmental pollution 2 The device is not designed to be hand-held when powered
class according to protection to be integrated into Class I and/or II Tab. 2.m
against electric shock appliances
PTI of the insulating materials PCB: PTI250; insulation material: PTI Product certification
175 Electrical safety EN 60730-1, EN 60730-2, UL60730
period of stress across the long Electromagnetic Versions without valve driver: EN 61000-6-1, EN 61000-
insulating parts compatibility 6-2, EN 61000-6-2/EC, EN 61000-6-2/IS1, EN 61000-6-3,
type of action 1C; 1Y for versions a SSR EN 61000-6-4; EN 55014-1, EN 55014-2, EN 55014-2/EC,
type of disconnection or microswitching EN 55014-2/A1, EN 55014-2/IS1, EN 55014-2/A2
microswitching Versions with valve driver with or without Ultracap
category of resistance to heat and category D (UL94 - V2) module: EN 61000-6-1, EN 61000-6-2, EN 61000-6-2/EC,
fire EN 61000-6-2/IS1, EN61000-6-3, EN 61000-6-4
immunity against voltage surges overvoltage category: II for all I/Os
except for the high voltage digital
outputs and digital inputs (class II
circuits), which are category I
ageing characteristics (operating 80,000
hours)
14 “pCO5” +0300009EN rel. 1.0 - 13.11.2011

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2.4 Dimensions
44
45 110
315 60
75
con modulo ultracap / with ultracap module
Fig. 2.e
44
45 110
227,5 60
Fig. 2.f
“pCO5” +0300009EN rel. 1.0 - 13.11.2011 15

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2.5 pCO compact
4 5 6 7 8 9 10
Y1
Y2
C2
NO2
GND
GND
TLAN
PWM 0/10V
Tx/Rx GND Tx/Rx GNX
J5 J6 J7 J8 ISOLATED J9 J10
B7
B8
C3
C3
ID2
GND
NO3
NO4
NO5
NO6
NO7
J4
11 J11 J12 12
Versione TYPE A
13
Versione TYPE B input voltage:

24 V (+10/-15%); 50/60 Hz
max. power:
14 VA /11 W s e r i a l ca rd 1
48 V (36Vmin…72 Vmax)
Y3
Y4
C3
C5
ID2
GND
NO4
NO3
NO6
NO5
0/10V 0/10V
J11 J12 J13
J1 J2 J3
+5Vref
+VDC
SYNC
GND
GND
NO1
NC1
14 15 16
ID1
G0
C1
B1
B2
B3
B4
B5
B6
G
1 2 3
Fig. 2.g
Key:
1 power supply connector 2.6 Meaning of the pCO5 compact inputs/
(G, G0) 24 Vac or 48 Vdc (36 Vdc min to 72 Vdc max) outputs
2 “SYNC“ synchronicity inputs for phase control and NTC, 0 to 1 V, 0 to
5 V, 0 to 20 mA, 4 to 20 mA analogue inputs, +5 Vref to supply 5 V TYPE A
Connector Signal Description
ratiometric probes and + Vdc (+21 Vdc) for active probes
J1-1 G power supply, +24 Vdc or 24 to 48 Vdc
3 digital output
J1-2 G0 power supply reference
4 connector for all standard pCO series terminals and for downloading
J2-1-2 SYNC power supply synchronicity input for phase control
the application program J2-3 B1 universal analogue input 1 (NTC, 0 to 1 V, 0 to 5 V, 0 to
5 pLAN network connector
10 V, 0 to 20 mA, 4 to 20 mA)
6 connector for pLD terminals J2-3 B2 universal analogue input 2 (NTC, 0 to 1 V, 0 to 5 V, 0 to
7 tLAN network connector 10 V, 0 to 20 mA, 4 to 20 mA)
8 optically-isolated connector for “FieldBus” serial J2-5 B3 universal analogue input 3 (NTC, 0 to 1 V, PT100,
9 0 to 10 V analogue and PWM phase control outputs PT1000)
10 digital output J2-6 B4 universal analogue input 4 (NTC, 0 to 1 V, PT100,
11 digital outputs (Type A) PT1000)
12 NTC analogue inputs and digital inputs (Type A) J2-7 B5 universal analogue input 5 (NTC, 0 to 1 V, 0 to 5 V, 0
13 removable cover for USB port to 10 V, DI)
14 digital outputs (type B) J2-8 B6 universal analogue input 6 (NTC, 0 to 1 V, 0 to 5 V, 0
15 digital outputs (type B) to 10 V, DI)
16 digital input and 0 to 10 V analogue outputs (Type B) J2-9 GND analogue input reference
J2-10 +5VREF power supply for 0 to 5 V ratiometric probes
J2-11 +24VDC power supply for 24 Vdc active probes
J2-12 ID1 digital input 1
J2-13 GND reference for digital input ID1
J13-1 C1 common for relays: 1
J13-2 NC1 normally closed contact, relay 1
J4 6-pin telephone connector for connecting the
standard user terminal
J5-1 RX-/TX- RX-/TX- connector for RS485 connection to the pLAN
network
J5-2 RX+/ RX+/TX+ connector for RS485 connection to the
TX+ pLAN network
J5-3 GND reference for RS485 connection to the pLAN network
J6 tLAN terminal connector
J7-1 TLAN tLAN network connector
J7-2 GND reference for connecting the tLAN network
J8-1 RX-/TX- RX-/TX- connector for RS485 connection to Fieldbus
port
J8-2 RX+/ RX+/TX+ connector for RS485 connection to Fieldbus
TX+ port
J8-3 GND GND connector for RS485 connection to Fieldbus
port
16 “pCO5” +0300009EN rel. 1.0 - 13.11.2011
ENG
J9-1 Y1 analogue output 1 PWM (for phase cutting speed 2.7 pCO5 compact compact technical
controllers)
J9-2 Y2 analogue output 2, 0 to 10 V specifications
J9-3 GND analogue output reference
Physical specifications
J11-1 C3 common for relays: 3, 4, 5, 6 ,7 dimensions all versions are available on 6 DIN modules 105x115x60 mm
J11-2 NO3 normally open contact, relay 3 assembly DIN rail
J11-6 NO7 normally open contact, relay 7 Plastic case
J11-7 C3 common for relays: 3, 4, 5, 6 .7 • Fitted on DIN rail in accordance with DIN 43880 and IEC EN 50022
J12-7 GND reference for analogue input B7, B8 and digital input • Material: technopolymer
ID2 • Flammability: V2 (UL94) and 960°C (IEC 695)
J12-8 ID2 digital input 2 • Ball pressure test 125 °C
J12-9 B7 universal analogue input 7 (NTC, DI)
J12-12 B8 universal analogue input 8 (NTC, DI)
• Resistance to creeping current ≥ 250 V
• Colour grey RAL7035
TYPE B
Connector Signal Description
J1-1 G power supply, +24 Vdc or 24 to 48 Vdc Electrical specifications
J1-2 G0 power supply reference Isolated power supply DC power supply: 48 Vdc (36 Vmin to 72
J2-1-2 SYNC power supply synchronicity input for phase control
Vmax)
J2-3 B1 universal analogue input 1 (NTC, 0 to 1 V, 0 to 5 V, 0 to
10 V, 0 to 20 mA, 4 to 20 mA) AC power supply: 24 Vac +10/-15 %, 50/60
J2-3 B2 universal analogue input 2 (NTC, 0 to 1 V, 0 to 5 V, 0 to Hz
10 V, 0 to 20 mA, 4 to 20 mA) Maximum power: P=11W, P=14VA,
J2-5 B3 universal analogue input 3 (NTC, 0 to 1 V, PT1000) Imax=700mA
J2-6 B4 universal analogue input 4 (NTC, 0 to 1 V, PT1000) CPU H8SX/1651 32-bit, 50 MHz
J2-7 B5 universal analogue input 5 (NTC, 0 to 1 V, 0 to 5 V, 0 Program memory (FLASH) 2+2 MByte
to 10 V, DI) Data memory (SRAM) 512 kBytes at 16 bit
J2-8 B6 universal analogue input 6 (NTC, 0 to 1 V, 0 to 5 V, 0 Parameter data memory 13 kBytes + 32 kB
to 10 V, DI) (EEPROM)
J2-9 GND analogue input reference
J2-10 +5VREF power supply for 0 to 5 V ratiometric probes NAND Flash memory 32 MByte
J2-11 +24VDC power supply for 24 Vdc active probes Working cycle duration 0.2 s typical (medium complexity
J2-12 ID1 digital input 1 applications)
J2-13 GND reference for digital input ID1 Clock Available as standard and integrated into
J13-1 C1 common for relays: 1 main board
J13-2 NC1 normally closed contact, relay 1 Tab. 2.o
J13-3 NO1 normally open contact, relay 1 Battery specifications
J4 6-pin telephone connector for connecting the
The battery used inside the pCO compact is a “button” sized lithium
standard user terminal
J5-1 RX-/TX- RX-/TX- connector for RS485 connection to the pLAN battery, code CR2430, 3 Vdc, dimensions 24mm x 3mm.
network
J5-2 RX+/ RX+/TX+ connector for RS485 connection to the SERIAL port specifications
TX+ pLAN network
Item Type Reference Main features
J5-3 GND reference for RS485 connection to the pLAN network
J6 tLAN terminal connector Serial PLAN J4, J5 • Integrated on main board
J7-1 TLAN tLAN network connector ZERO • Not optically-isolated
J7-2 GND reference for connecting the tLAN network • HW driver: RS485
J8-1 RX-/TX- RX-/TX- connector for RS485 connection to Fieldbus • Connectors: Telephone jack + 3-pin plug-
port in p. 3.81
J8-2 RX+/ RX+/TX+ connector for RS485 connection to Fieldbus CABLE LENGTH
TX+ port
J8-3 GND GND connector for RS485 connection to Fieldbus Conn. Type of Lmax Power
port shielded (m)
J9-1 Y1 analogue output 1 PWM (for phase cutting speed cable
controllers) J4 Telephone 50 taken
J9-2 Y2 analogue output 2, 0 to 10 V from pCO
J9-3 GND analogue output reference compact
J10-1 NO2 normally open contact, relay 2 (150 mA)
J10-2 C2 common for relay 2 J4 AWG24 200 taken
J11-1 NO4 normally open contact, relay 4 from pCO
J11-2 C3 common for relay 3, 4 compact
J11-3 NO3 normally open contact, relay 3 (150 mA)
J4 AWG20/22 500 separate via
J12-2 C3 common for relay 5, 6
J12-3 NO5 normally open contact, relay 5 TCONN6J000
J13-1 GND reference for analogue output Y3, Y4 and digital input J5 AWG20/22 500 -
ID2 Serial BMS 1 Serial • Not integrated on main board
J13-2 ID2 digital input 2 ONE Card 1 • HW driver: not present
J13-3 Y3 analogue output 3, 0 to 10 V • Can be used with all pCO family optional
J13-4 Y4 analogue output 4, 0 to 10 V BMS cards
Tab. 2.n • Maximum cable length: see serial option
documents
“pCO5” +0300009EN rel. 1.0 - 13.11.2011 17

ENG
Serial Opto- J8 • IIntegrated on main board 0 to 1 Vdc voltage B1, B2, B3, B4, B5, B6
TWO isolated • Optically-isolated 0 to 5 Vdc ratiometric B1, B2, B5, B6
FIELD Bus • HW driver: RS485 opto-isolated 0 to 10 Vdc voltage B1, B2, B5, B6
• 3-pin plug-in connector p. 3.81 0 to 20 mA or 4 to 20 mA current B1, B2
• Maximum AWG20/22 shielded cable PT1000 -100T200 °C; R/T 1000 Ω B3, B4
length: 500 m at 0 °C
tLAN J6/J7 As an alternative to the Field Bus serial the Voltage-free digital input (5 mA) B5, B6, B7, B8 B5, B6
following can be used: Total 8 6
• tLAN serial available on a 2-pin connector Tab. 2.s
p. 3.81 (J7) or
• connection to a PLD terminal available via
special 4-pin connector (J6) Warning: for the power supply to any active probes, the +21 V
• J7: maximum shielded cable length (2 available on the +21VDC terminal can be used, maximum current
wires + shield) AWG20/22: 30 m available Imax=60 mA, protected against short-circuits. For the power
• J6: maximum four-wire cable length supply to the 0 to 5 Vdc ratiometric probes, use the +5 VREF, maximum
(see accessories table): 2 m for domestic current available Imax= 60 mA, protected against short-circuits.
environments, 10 m for residential
environments
Tab. 2.p Time constant 0.5 s
Precision ± 0.3% of full scale
Classification of measuring circuits Category I (IEC EN 61010-1)
Note: Tab. 2.t
• Only use STP or S/UTP with shielded cables both ends of the shield
connected to PE.
• Serial 2 is designed to be the MASTER. This implies that any pCO Warning: separate as much as possible the probe signal and digital
compacts connected as SLAVES cannot be connected using serial 2. input cables from the inductive load and power cables, to avoid possible
Nonetheless, only one SLAVE can be connected using serial 2. electromagnetic disturbance.
Digital inputs
pLAN network/user terminal connection Max. cable length 10 m
Type Not opto-isolated,
Type Asynchronous half duplex RS485
voltage-free contact
Transmission speed 62.5 Kbps or 115.2 Kbps selectable via
Power supply Internal
software
Maximum number of units
Models TYPE A TYPE B
32 Unit maximum allowed
connectable Multifunction analogue B5, B6, B7, B8 B5, B6
Terminal connector 6-pin telephone (J4) inputs (see note)
Connector pLAN network, graphic 3-pin plug-in connector, 3.81 mm pitch Fast digital input ID1 ID1
terminal, Aria terminal (J5) Normal digital input ID2 ID2
Maximum network length 30 m Total 6 4
Tab. 2.q Tab. 2.u
Note:
• J4 can connect just one terminal (pCOT, pCOI, pGD0 and pGD1) or two
terminals however without using the display backlighting. Note:
• Graphic terminal and Aria terminal should always have separate power Multifunction analogue inputs: these analogue inputs can be
supplies. programmed via software as digital inputs instead of analogue inputs. All
digital inputs refer to GND.
tLAN network connection

Fast digital input specifications (ID1)
Type Asynchronous half duplex 0/5 Vdc, non-
The fast digital input (ID1) can be configured via software in two different
differential
operating modes, with the following characteristics:
Transmission speed 9.6 Kbps or 19.2 Kbps selectable via software
• mode one: normal or standard digital input;
Maximum number of Maximum 5 units allowed
• mode two: fast digital input.
units connectable
tLAN network connector 2-pin plug-in connector, 3.81 mm pitch (J7)
Tab. 2.r When configured as a fast digital input, ID1 can measure a signal with a
maximum frequency of 2 KHz, resolution +/- 1 Hz. This is made possible
Note: by the BIOS, which provides the SW application with two variables that
• The tLAN serial (J7) is used as an alternative to either the Field Bus the count the number of times the input signal crosses zero and the
serial available on the 3-pin connector p. 5.08 (J8) or the PLD terminal corresponding frequency in Hz.
connection available on the special 4-pin connector (J6).
Note: see details in the paragraph 4.5 on digital inputs
Analogue inputs
Max. cable length 10 m
Analogue conversion A/D converter, 10-bit CPU built-in Normal and fast digital input specifications
Models TYPE A TYPE B The maximum current available to the digital input is 5 mA (consequently
CAREL NTC -50T90 °C; R/T 10 kΩ at B1, B2, B3, B4, B5, B1, B2, B3, B4, B5, B6 the rating of the external contact must be at least 5 mA).
25°C or HT NTC0T150 °C B6, B7, B8
18 “pCO5” +0300009EN rel. 1.0 - 13.11.2011

ENG
Analogue outputs Technical specifications Insulation Conn. Models
Max. cable length 10 m of the outputs group
Type A (2 SSR)
Type B (2 SSR)
Type B (4 SSR)
Type Not opto-isolated
Power supply Internal
Type A
Type B
Models TYPE A TYPE B
0 to 10 Vdc analogue output Y2 Y2, Y3, Y4
PWM analogue output with 5 Vdc pulse Y1 Y1
SPDT relay:UL873: 2.5 1 J3 1 - 1 - 1
of programmable duration
A resistive, 2 A FLA, 12 2 J10 1 - 1 - 1
Total 2 4
Tab. 2.v A LRA, 250 Vac, C300
pilot duty (30,000
cycles) EN60730-1: 2 A
Specifications resistive, 2 A inductive,
cos(phi)=0.6, 2 (2) A
Resolution 8 bit (100,000 cycles)
Precision ± 2% of full scale on Y2 SPST relay:UL873: 1 A 3 J11 5 5 2 2 -
Settling time 2s resistive, 1 A FLA, 6 A LRA, 4 J12 - - 2 2 -
Maximum load 1kΩ (10 mA) for Y2 0/10V, 470 Ω (10 mA) for Y1 250 Vac, D300 pilot duty
PWM (30,000 cycles) EN60730-
Tab. 2.w 1: 1 A resistive, 1 A
inductive, cos(phi)=0.6, 1
(1) A (100,000 cycles)
Power MOSFET 1 J3 - 1 - 1 -
Photovoltaic relay 2 J10 - 1 - 1 -
Digital outputs Operating voltage: 24 Vac 3 J11 - - - - 2
or 28 to 36 Vdc 4 J12 - - - - 2
pCO compact TYPE A features 7 digital outputs, while pCO compact TYPE
Maximum power: 10 W
B features 6 digital outputs, both with electromechanical or solid state
Total outputs 7 7 6 6 6
relays (SSR). To simplify wiring, the common terminals of some relays have Tab. 2.x
been grouped together, depending on the insulation distance.
Within a group, the relays only have basic insulation between them and pCO5 compact hardware simulator
thus must be powered at the same voltage (generally 24 Vac or 110 to For availability of the pCO5 compact simulator (pCO5 compact type A
230 Vac). Between groups there is reinforced insulation, thus the groups simulator code: CM00002026; pCO5 compact type B simulator code:
can be powered at different voltages. CM00002027) contact CAREL.
2.8 pCO5 compact dimensions

TLAN
GND
Y1
Y2
GND
NO2
C2
PWM 0/10V
Tx/Rx GND Tx/Rx GNX
J5 J6 J7 J8 IS O LATED
J9 J1 0
J4 s e r i a l c a rd 2
110
input voltage: max. power:

24 V (+10/-15%); 50/60 Hz
8 VA / 6 W s e r i a l c a rd 1
J1 J2 J3
+5Vref
+VDC
SYNC
GND
GND
NO1
NC1
ID1
G0
C1
B1
B2
B3
B4
B5
B6
G
105 60
Fig. 2.h
“pCO5” +0300009EN rel. 1.0 - 13.11.2011 19

ENG
3. USER TERMINALS AND OPTIONAL CARDS
Various types of user terminals are available, differing in terms of: PGD1000I00 pCO graphic display (panel installation)
• dimensions;
• liquid crystal display (LCD);
• number of buttons;
• number of indicator LEDs;
3.1 Graphic terminals
pGDE
The pGD graphic display is an electronic device, compatible with the
previous PCOI/PCOT terminals, used for the complete management of
the graphics, by displaying icons (defined at an application software
development level) and international fonts, in two dimensions: 5x7 and
11x15 pixels. The application software only resides on the pCO board;
the terminal does not need any additional software during operation. Fig. 3.b
In addition, the terminal allows a wide range of operating temperatures
(-20T60°C) and guarantees a high index of protection (IP65).
Display
Type: FSTN graphic
Backlighting: green LEDs (controlled by “application program”)
depending on the code..
Graphic resolution: 132x64 pixel
Text modes: 8 rows x 22 columns (5x7 and 11x15 pixel fonts)
4 rows x 11 columns (11x15 pixel fonts)
or mixed modes
Character height: 3.5 mm (5x7 pixel fonts)
7.5 mm (11x15 pixel fonts)
Size of the active area: 66x32 mm
Size of the display area: 72x36 mm
Keypad
15 buttons, the “ESC” button is replaced by the “MENU” button
Power supply
Voltage: power supply from pCO via telephone connector
Fig. 3.a
or from external 18/30 Vdc source protected by
external 250 mAT fuse
White Backlight White Backlight with buzzer
Maximum power input: 1.8 W
Built-in or panel PGDE000F00 PGDE000FZ0
version
Wall-mounted version PGDE000W00 PGDE000WZ0 Adjusting contrast on the pGD1:
1. pressing the Alarm and Prg buttons together
2. holding the two buttons, use Up or Down to adjust the contrast as
Technical specifications desired (increase or decrease).
Display
Type: FSTN graphic
Backlighting: white LEDs (controlled by “application program”) Built-in display
depending on the code.
Graphic resolution: 132x64 pixel
Text modes: 8 rows x 22 columns (5x7 and 11x15 pixel fonts)
4 rows x 11 columns (11x15 pixel fonts)
or mixed modes
Character height: 3.5 mm (5x7 pixel fonts)
7.5 mm (11x15 pixel fonts)
Size of the active area: 66x32 mm
Size of the display area: 72x36 mm
Keypad LED / buzzer
2 programmable from “application program”, red and orange ( + buttons)
4 4 green controlled by LCD backlighting LCD ( & buttons)
Optional buzzer (*Z0 models)
Power supply Fig. 3.c
Voltage: power supply from pCO via telephone connector
or from external 18/30 Vdc source protected by
external 250 mAT fuse
Maximum power input: 0.8 W
Fig. 3.d
20 “pCO5” +0300009EN rel. 1.0 - 13.11.2011

ENG
pCO5 and pCO5 compact come in the built-in terminal version with the RS232 serial card for modem management: PCO100MDM0
display and keypad directly incorporated onto the plastic case.
codes PCO5******E**,
PCO5******F**,
PCO5******G**,
LCD 8x22, backlit (pGD1)
number of buttons 6
number of LEDs 4+2 two-colour
Fig. 3.e
These versions with integrated LCD and keypad also support connection
Fig. 3.g
to the pCO, PGDE and PGD1 series terminals (the two displays, built-in
and standard, work at the same time, displaying the same information). The PCO100MDM0 card is an option used to interface pCO electronic
controllers to a standard HAYES modem, managing the following
The display contrast can also be adjusted on this version of terminal. hardware signals:
To do this : • output, “request to send” (RTS) in parallel with “data terminal ready”
1. press the Enter and Esc buttons together; (DTR);
2. holding the two buttons, use Up or Down to adjust the contrast as • input, “carrier detect” (CD).
desired (increase or decrease). The maximum baud rate is 19200 baud. For the technical specifications,
meanings of the connections (pins) and instructions on inserting the
card, see the instructions shown on the instruction sheet included in the
Connecting the user terminal to the pCO board packaging with the card (code +050003240).
The typical connection between the pGD terminal and the pCO is made
using a 6-wire telephone cable supplied by CAREL (code S90CONN00*,
see the table). To make the connection, simply plug the cable into the Ethernet serial card: PCO1000WB0
6-pin connector on the pCO board (J10 for pCO3 and pCO1, J5 for pCOXS,
J19 pCOC), until it clicks into place. To remove the connector, lightly
press the plastic catch and remove the cable. The telephone connector
provides both the data link and the power supply to the terminal, and is
the simplest connection method; in more complex configurations, where
multiple terminals need to be connected to the pCO or to cover lengths
over 50 m, use shielded, twisted pair cable (see diagrams in chap. 5).
Warning shielded cables must be used even when the pCO is

fitted on appliances for household or similar uses, and therefore subject Fig. 3.h
to the requirements of IEC EN 55014-1 of 04/98) – (see paragraph 5.7).
When making a pLAN network of pCO controllers and terminals, Used to interface pCO controllers with BACnet™ Ethernet™ and IP, SNMP
remember that one pCO can only power one pGD0/1 or pCOT/I terminal. V1, 2, FTP and HTTP, Modbus® TCP/IP protocols..
If needing to manage more than one terminal or for the pGD2/3, an
independent power supply is required (see diagrams in chap. 5). The
direct current available at Vterm (J24 for pCO3, J9 for pCO1) can power BACnet™ MSTP RS485 interface card (PCO1000BA0)
an Aria or PLD terminal with a maximum current of 2 W. Absence of the
terminal does not compromise operation of the pCO.
3.2 Optional cards for pCO sistema

Serial cards for supervision and telemaintenance
Fig. 3.i
RS485: PCOS004850 Used to interface pCO controllers with the BACnet™ MSTP protocol,
increasingly used for HVAC applications.
CANbus serial card: PCOS00HBB0
Fig. 3.f
The PCOS004850 card is an option used to interface pCO electronic
controllers to an RS485 network with maximum baud rate 19200 baud
(settable via software). It guarantees optical isolation of the controller
from the RS485 serial network. Fig. 3.j
For the technical specifications, meanings of the connections (pins)
These devices are used to connect pCO controllers to CANbus networks
and instructions on inserting the card, see the instructions shown on
and, more specifically, to e-drofan fan coil controllers, exploiting the power
the instruction sheet included in the packaging with the card (code
of the edronic system to allow simpler management of the installation,
+050003237).
optimising comfort, synergies between controllers and running costs.
+050000162).
“pCO5” +0300009EN rel. 1.0 - 13.11.2011 21
ENG
LonWorks® serial card: PCO10000F0 Serial cards for connection to a “field bus” network
The optional Field bus cards provide a serial interface that allows the PCO3
and pCO1 to communicate with other devices over various standards.
Indeed, the tLAN, MP bus and RS485 options interface the pCO to a
network of devices including actuators, probes, expansions or terminals.
RS485 serial card: PCO100FD10
Fig. 3.k
The PCO10000F0 card is an option used to interface pCO electronic
controllers to a LonWorks® network.
Warning: to become operational, the interface card must be

programmed according to the application installed on the pCO.
Fig. 3.m
Information on how to program the board is available in the corresponding The PCO100FD10 option is used to connect the pCO3 and pCO1, via an
manual, code +030221960. electrically insulated interface, to an RS485 network, using the connector
The program resides in flash memory housed on a socket, and can with plug-in terminals on the card. The controller consequently acts
be programmed directly via the LonWorks® network using network as the MASTER (i.e. supervisor), and therefore other pCO controllers or
installation and maintenance tools, such as LonMaker™. SLAVE devices can also be connected. The meaning of the pins on the
• PCO*0000F0 - interface to FTT-10A 78 kbs (TP/FT-10). connector are denoted by the screen printing on the card. A maximum
of 207 devices can be connected using this type of connection. If the
The pCO baud rate must be set to 4800, while the pCO address is not optional card occupies the last position on the supervisor serial line and
significant as it is automatically recognised by the card. An option the line is longer than 100m, the line must be terminated by connecting
is available already programmed with the standard chiller profile: a 120Ω - 1/4W resistor to the terminal pins.
PCO10001F0. For the technical specifications, meanings of the For SLAVE operation, on the other hand of type, only one pCO can be
connections (pins) and instructions on inserting the card, see the connected to the network with this optional card.
instructions shown on the instruction sheet included in the packaging
with the card (code +050004040). tLAN and PST card: PCO100TLN0
Konnex serial card (PCOS00KXF0, PCOS00KXB0)
Fig. 3.n
The PCO100TLN0 option is used to connect the pCO1 to a tLAN network
using two separate connectors.
The first connector is used to connect the pCO3 and pCO1 to a tLAN
Fig. 3.l network. Using this connection and a suitably-configured application in
TLAN MASTER mode, the pCO1 can interact with the pCO I/O expansion
The KNX technological standard is now widely used in building (tLAN version - PCOE00TLN0) or with other pCO controllers fitted with a
automation and control for commercial and residential use. tLAN connection, configured in tLAN SLAVE mode.
CAREL is member of the KNX Association (www.knx.org). A maximum of 5 devices can be connected using this type of connection.
The CAREL Konnex card is compatible with all KNX/EIB devices and can The second connector, on the other hand, is used to connect a PNT or PST
be installed on the FieldBus or BMS port on the pCO sistema or e-drofan terminal. Using this connection and a suitably-configured application, the
controllers. The K-Set tool (available for download from ksa.carel.com) is pCO3 and pCO1 can interact with a PNT terminal. For both connections,
used to create an XML file for the custom profiles. use a shielded cable with a maximum length of m.
For the technical specifications and the various configuration Important: both connectors cannot be used at the same time.
specifications, see the instructions shown on the instruction sheet
included in the packaging with the card (code +050000770).
MP-Bus card: PCO100MPB0
Fig. 3.o
The PCO100MPB0 option is used to connect the pCO3 and pCO1 to an
MP-Bus network made up of I/O devices using the Belimo standard. Up to
8 actuators can be connected at the same time, with a maximum distance
of 30 m (Fig. 7). To connect an active or passive temperature sensor, or a
digital contact, refer to the specific Belimo documents (www.belimo.ch).
As regards the configuration procedures for the network addresses, these
are described in the specific manuals for the individual applications.
22 “pCO5” +0300009EN rel. 1.0 - 13.11.2011
ENG
and instructions on inserting the card, see the instructions shown on terms of:
the instruction sheet included in the packaging with the card (code • greater precision and immunity to disturbance for both the
+050003270). conductivity and the level sensor;
• the “high water level” signal can be managed either by a digital or
RS232 serial card for modem management: PCOS00FD20 analogue output.
Consequently, both the PCOUMID000 and the PCOUMID200 cards can be
connected to the pCO, with the only requirement being to set a special
parameter so as to allow the software to use the correct conductivity
curve..
44
Fig. 3.al
45 110
The PCOS00FD20 card is an option used to interface pCO1/pCO3
electronic controllers directly to a standard HAYES modem. The card
manages “request to send” (RTS) in parallel with “data terminal ready”
(DTR).
+050003295).
Fig. 3.r
CANbus serial card: PCOS00HBF0 For the technical specifications, meanings of the connections (pins)
+050003210).
CPY interface
Fig. 3.p
These devices are used to connect pCO controllers to CANbus networks
and, more specifically, to e-drofan fan coil controllers, exploiting the power
of the edronic system to allow simpler management of the installation,
optimising comfort, synergies between controllers and running costs.
+050000162).
Fig. 3.s
Electronic card for control and management of CAREL KUE humidifier
External modules and interfaces kits:
• features all the inputs and outputs to completely and independently
Interface for OEM series humidifiers (PCOUMI2000) control the humidifier;
• features three LEDs to indicate alarms (red LED), steam production
(yellow LED), 24 Vac power supply (green LED);
• can be connected to the CPY terminal (code CPYTERM*), or to the
supervisor network with Modbus® RTU or proprietary CAREL protocol.
DC/DC module (PCO20DCDC0)
Fig. 3.q
The PCOUMI2000 module is an interface for pCO electronic controllers Fig. 3.t
used to allow the fundamental parameters of the OEM humidifiers made The PCO20DCDC0 power supply module is an option for the pCO
by CAREL (high level and supply water conductivity in the cylinder, TAM electronic controllers.
current sensor) to be controlled directly by the pCO microprocessor It stabilises the 24±1 Vdc/0.7 A direct current output (from the pCO
electronic controller. The values measured by the sensors are converted controller) when the input voltage (power source) is in the range from
into signals read by the inputs on the pCO (for further information see the 21 to 58 Vdc (for example 48 Vdc storage batteries, typical in telephone
user manual for the application program). applications).
Compared to the PCOUMID000 interface, the PCOUMI2000 differs in The maximum capacity delivered is 17 W, suitable for powering any
pCO electronic controller. The input and output of the power supply
“pCO5” +0300009EN rel. 1.0 - 13.11.2011 23
ENG
module are galvanically insulated at a functional level. For the technical 2. When this condition is true, pressing the START button automatically
specifications, meanings of the connections (pins) and instructions on activates the UPLOAD procedure (read data from SmartKey to pCO).
inserting the card, see the instructions shown on the instruction sheet 3. Completion of the UPLOAD procedure is signalled by the buzzer.
included in the packaging with the card (code +050004020). The operation for reading the data may take a few minutes to
complete
SMART KEY (PCOS00AKY0 e PCOS00AKC0) DOWNLOAD APPLICATION

At the end of the connection and recognition stage between SmartKey
and pCO, the controller goes into programming mode, with the START
button light on steady. Then proceed as follows
1. Make sure the arrow is pointing to the inside of the SmartKey. If the
arrow is pointing the other way, switch directions by pressing the
MODE button.
2. When this condition is true, pressing the START button automatically
activates the DOWNLOAD procedure (read data from the pCO)
Fig. 3.u 3. Completion of the DOWNLOAD procedure is signalled by the
buzzer. The operation for writing the data may take a few minutes
The PCOS00AKY0 key is an electronic device used to program and service to complete.
the pCO sistema family controllers. PCOS00AKY0 simplifies data transfer
between the controllers installed and a personal computer by exploiting MEANINGS OF THE BUTTONS/SYMBOLS
the high capacity flash memory for storing software applications, BIOS Flashing: the key is connecting to the pCO, during this phase,
/
and variable logs. The pCO is connected directly via the telephone
UP /DOWN which may last a few seconds, the start button is disabled.
connector using the cable supplied, while to transfer the data to a START Flashing: the key has detected the pCO and is checking the
personal computer, the USB adapter code PCOS00AKC0 is required access rights
(converter not opto-isolated, for the Smart Key only). The power supply On steady: pressing the button starts writing the software to the
START+
comes either via the USB port on the PC or from the controller, therefore pCO
no external power supply is needed. START+ On steady: pressing the button starts reading the software from
the pCO
REQUIREMENTS START+ On steady: pressing the button starts reading the logs from the
Hardware requirements: type C and G Smart Keys can only copy pCO
MODE On steady: for key type C, pressed for 1 second switches from
software between pCO devices belonging to the same family, which are
read to write
compatible in terms of RAM and FLASH memory size.
Tab. 3.a
The pCO families are:
• pCO1/pCOC/pCOXS/pCO OEM The key is type C of G, pressing the “mode” button for 1 second switches
• pCO2 from read to read logs (G only)or write, the symbols (write to pCO), (read
• pCO3 from pCO), (read logs) reflect the selected status. If the key is not type “C”
• pCO5 or “G”, the “mode” button is disabled and off.
• pCO Compact The “start” button starts the read or write operation, indicated by the
• Supernodo flashing of the corresponding symbol (UP or DOWN) at a frequency
Software requirements: the programming key is compatible starting from
proportional to the progress of the operation.
Bios version 3.43 and Boot version 3.01.
When the operation is completed, the buzzer sounds intermittently for
For more detailed information on programming the key, see the pCO
2 seconds. Pressing the “start” button again, the buzzer sounds without
Manager program manual.
repeating the operation; to repeat the operation, the key must first be
unplugged.
CONNECTION
Spegnere il pCO rimuovere qualsiasi periferica connessa in rete pLAN
ERRORS BEFORE PRESSING THE START BUTTON
e Switch off the pCO, remove any peripherals connected in the pLAN symbols flashing • Communication error: no response
and plug the key into the telephone connector on the controller. When + +
from the pCO
switching on again all the symbols light up momentarily and the buzzer • Firmware version of the key
emits a beep. incompatible
Then wait a few seconds before the key is operational. +MODE symbols on steady Password error
This waiting stage is indicated by UP and DOWN symbols flashing. symbols flashing Type of key incompatible
At the end of this stage, the controller enters programming mode and +MODE
+ symbols on steady • The key is missing one or more
the start button, now on steady, can be pressed to start the data transfer.
required files
Then the Upload/Download operations described below can be • Empty memory: no kit for the type
performed. of pCO connected
+ +START symbols on steady Incompatibility between the software
Important: if the key is type B, C or G (in write mode) pressing the + flashing START on the key and the pCO HW (*)
start button immediately deletes the software already loaded on the
+ +MODE symbols on steady Incompatibility between pCO
pCO. + flashing MODE application and HW (application size)
+ + symbols on steady No logged data present on the pCO
Important: the key must not be removed while a write operation
symbol on steady Type of key not programmed
is in progress to the key, as the file being transferred will be lost and the
corresponding space is not restored. To restore the original capacity all Tab. 3.b
the files will need to be deleted. If the key is type “C” or “G”, simply perform
a new application read operation.
ERRORS AFTER PRESSING THE START BUTTON
+START+ symbols flashing and buzzer The write operation has failed
UPLOAD APPLICATION sounding intermittently
+BUZZER
At the end of the connection and recognition stage between SmartKey symbols flashing and buzzer The read operation has failed
+START+
and pCO, the controller goes into programming mode, with the START sounding intermittently
button light on steady. Then proceed as follows +BUZZER
+START+ symbols flashing and buzzer The read logs operation has
1. Make sure the arrow is pointing in the direction of the pCO sounding intermittently failed
connection. If the arrow is pointing the other way, switch directions +BUZZER
by pressing the MODE button
24 “pCO5” +0300009EN rel. 1.0 - 13.11.2011
ENG
Incompatibility between log Versions available:
+ + symbols on steady +
flashing configuration and pCO HW (no • PCOE00TLN0 version tLAN (CAREL proprietary protocol);
dedicated flash memory) • PCOE004850 version RS485 (CAREL 3.0 supervisor protocol).
+ symbols on steady Insufficient space to read For the technical specifications, meanings of the connections (pins)
logged data and instructions on inserting the card, see the instructions shown on
symbol flashing Generic error the instruction sheet included in the packaging with the card (code
Tab. 3.c +050003265).
PROGRAMMING SMART KEY VIA PC
The different operating modes described in the table below can be
configured using a program on the PC. The same program can also load
the software to the key or transfer the logged data from the pCO to disk. Valve driver (EVO*)
Type Function Mode button

B Update software from key to pCO Disabled
(bios, application, parameters,…)
C* Copy software from pCO to pCO Switches the key from write
(bios, application, parameters,…) mode to read mode
D Read logged data Disabled
E Read logged data and software Disabled
from pCO (bios, application,
parameters,…)
F Read logged data from μChiller3 Disabled
G Copy from pCO to pCO and read Switches the key from write
logged data mode to read mode
*: Default mode
Tab. 3.d
The key is programmed as default in read/write mode (type C) so as Fig. 3.x

to allow used immediate use for transferring the software from one
controller to another. The EVD0000400 module for electronic expansion valves with two-pole
When the key is connected to the personal computer, the symbols have stepper motor is a controller that manages refrigerant expansion in a
the following meanings refrigerant circuit. This function is achieved by optimising the opening
• Flashing: awaiting connection to the PC of the valve using a PID algorithm and some special auxiliary control
• Alternating: during connection to the PC, indicates that data transfer routines. The controller has a tLAN interface for connection to a Master
is in progress unit, an RS485 adapter (available on models *410, *411, *420 and *421)
that allows connection to units with the supervisor protocol, from 4800
to 19200 baud, or with the pLAN protocol. The controller automatically
USB/RS485 converter (CVSTDUMOR0/CVSTDUTLF0))
recognises the protocol and the baud rate. Alternatively, the controller
can operate in stand-alone mode. As well as the serial connection, in
any configuration described above, the controller can be accessed for
configuration or monitoring via an auxiliary “service” serial port at 4800
baud with supervisor/tLAN protocol and network address = 1 (fixed). The
USB converter CVSTDUTTL0 is required to use the “service” serial port. This
connection is for temporary use (Fig. 2). If using the “service” serial port
or the supervisor protocol on the main serial port, the EVD4UI program
Fig. 3.v can be used; this has a user-friendly graphic interface and is available on
Il The USB-RS485 converter is an electronic device used to interface a the KSA site.
RS485 network to a personal computer via the USB port, used together
with WINLOAD. The converter is available in two versions: CVSTDUTLF0,
fitted with six-pin telephone connector, and CVSTDUMOR0, fitted with 3.3 Connectors
three-pin terminal block. These are optically-isolated and cannot be
used with the Smart key. For the technical specifications, meanings of Example codes: PCO5CON**0 see the following table for the description:
the connections (pins) and instructions on inserting the card, see the
PCO3CON * * 0
instructions shown on the instruction sheet included in the packaging
0= screw S= small
with the card (code +050000590). 1= spring M= medium
L= large
pCOe Z= extra large N.O.
Tab. 3.bb
PCOXCON * * 0
0= screw A= type A
1= spring B= type B
Tab. 3.e
Fig. 3.w
The “PCOE000TLN0 and PCOE0004850” expansion card is an electronic

device that’s part of the pCO sistema family and has been designed to
increase the number of I/Os on the pCO controllers. A maximum of 5
expansion cards can be connected for each pCO controller.
“pCO5” +0300009EN rel. 1.0 - 13.11.2011 25

ENG
4. PCO CONTROLLER INSTALLATION
4.1 General installation instructions 61000-6-2) the connections must be less than 30 m long;
• all the extra low voltage connections (analogue and 24 Vac/Vdc or
28 to 36 Vdc digital inputs, analogue outputs, serial bus connections,
Installation instructions power supplies) must have reinforced or double insulation from the
Environmental conditions mains network;
Avoid assembling the pCO and the terminal in rooms with the following • in residential environments, the connection cable between the pCO
characteristics. and the terminal must be shielded;
• temperature and humidity that do not conform to the rated operating • there is no limit to the number of cables that can be connected to an
data of the product; individual terminal. The only limitation concerns the maximum current
• strong vibrations or knocks; crossing each terminal: this must not exceed 8 A;
• exposure to aggressive and polluting atmospheres(e.g.: sulphur and • the maximum size of wires connected to a terminal is 2.5 mm2 (12
ammonia fumes, saline mist, smoke) so as to avoid corrosion and/or AWG);
oxidation; • the maximum value of the twisting torque to tighten the screw on the
• strong magnetic and/or radio frequency interference (therefore avoid terminal (torque tightening) is 0.6 Nm;
installing the units near transmitting antennae);
• exposure of the pCO to direct sunlight and to the elements in general; Warnings
• large and rapid fluctuations in the room temperature;
• environments where explosives or mixes of flammable gases are • Installation must be performed according to the standards and
present; legislation in force in the country where the device is used;
• exposure to dust (formation of corrosive patina with possible oxidation • for safety reasons the equipment must be housed inside an electrical
and reduction of insulation). panel, so that the only accessible part is the display and the keypad;
• in the event of malfunctions, do not attempt to repair the device, but
Positioning inside the panel rather contact CAREL.
The position of the controller in the electrical cabinet must be chosen so
as to guarantee correct physical separation from the power components
(solenoids, contactors, actuators, inverters, ...) and the connected cables.
Proximity to such devices/cables may create random malfunctions that Anchoring the pCO
are not immediately evident. The pCO is installed on a DIN rail. To fasten the unit to the DIN rail, press it
The structure of the panel must allow the correct flow of cooling air. lightly against the rail. The rear tabs will click into place, locking the unit
in place. Removing the unit is just as simple, using a screwdriver through
the release slot to lever and lift the tabs. These are kept in the locked
position by springs.
Wiring instructions
When laying the wiring, “physically “ separate the power part from
the control part. The proximity of these two sets of wires will, in
most cases, cause problems of induced disturbance or, over time,
malfunctions or damage to the components. The ideal solution is to 4.2 Power supply
house these two circuits in two separate cabinets. Sometimes this is not pCO5 power supply (controller with 28 to 36 Vdc +10/-20% and 24
possible, and therefore the power part and the control part must be terminal connected) Vac +10/-15% 50 to 60 Hz;
installed in two separate areas inside the same panel. For the control Maximum current P= 20 W (power supply Vdc), P=
signals, it is recommended to use shielded cables with twisted wires. 45 VA (Vac)
If the control cables have to cross over the power cables, the intersections pCO5 compact power supply: 48 Vdc (36 Vmin to 72 Vmax) and
must be as near as possible to 90 degrees, always avoiding running the 24 Vac +10/-15 %, 50/60 Hz
control cables parallel to the power cables. Maximum current P=11W, P=14VA, Imax=700mA
Carel highlights the following warnings: Tab. 4.a
• Use cable ends suitable for the corresponding terminals. Loosen • power supply voltage other than that specified will seriously damage
each screw and insert the cable ends, then tighten the screws. When the system;
the operation is completed, slightly tug the cables to check they are • a Class II safety transformer, rating 50 VA, must be used in the installation
sufficiently tight; to supply just one pCO5 controller; the pCO5 compact on the other
• separate as much as possible the sensor signal, digital input and serial requires the same type of transformer yet with a 25 VA rating.
line cables from the cables carrying inductive loads and power cables • the power supply to the pCO controller and terminal (or pCO
to avoid possible electromagnetic disturbance. Never insert power controllers and terminals) should be separated from the power supply
cables (including the electrical cables) and probe signal cables in to the other electrical devices (contactors and other electromechanical
the same conduits. Do not install the sensor cables in the immediate components) inside the electrical panel;
vicinity of power devices (contactors, circuit breakers or similar); • if the power transformer secondary is earthed, check that the earth
• reduce the path of the sensor cables as much as possible, and avoid wire is connected to terminal G0. This applies to all the devices
spiral paths that enclose power devices; connected to the pCO;
• avoid touching or nearly touching the electronic components fitted • if more than one pCO board is connected in a pLAN network, make sure
on the boards to avoid electrostatic discharges (extremely damaging) that the G and G0 references are observed (G0 must be maintained for
from the operator to the components; all boards);
• if the power transformer secondary is earthed, check that the earth • a yellow LED indicates that the pCO is powered.
wire corresponds to the wire that runs to the controller and enters
terminal G0; this applies to all the devices connected to the pCO;
• do not secure the cables to the terminals by pressing the screwdriver
with excessive force, to avoid damaging the pCO;
• for applications subject to considerable vibrations (1.5 mm pk-pk
10/55 Hz), secure the cables connected to the pCO around 3 cm from
the connectors using clamps;
• if the product is installed in industrial environments (application of EN
26 “pCO5” +0300009EN rel. 1.0 - 13.11.2011

ENG
4.3 Connecting the analogue inputs Controller pCO terminals NTC probe
wire
The analogue inputs on the pCO can be configured for the most common
pCO5 GND, BC4, BC5, BC9, BC10 1
sensors on the market: NTC, PT1000, 0 to 1 V, 0 to 5 V ratiometric, 0 to 10 B1, B2, B3, B4, B5, B6, B7, B8, B9, B10 2
V, 0 to 20 mA, 4 to 20 mA. pCO5 compact GND 1
(type A) B1, B2, B3, B4, B5, B6, B7, B8 2
Connecting active temperature and humidity probes pCO5 compact GND 1
The pCO can be connected to all the CAREL DP* series active temperature (type B) B1, B2, B3, B4, B5, B6 2
and humidity probes configured as 0 to 1 V or as 4 to 20 mA. Tab. 4.c
For temperature probes use the 4 to 20 mA or NTC configuration, as
the 0 to 1 Vdc signal is limited to the range 0 to 1 V and therefore is not Warning: the two wires of the NTC sensors are equivalent, as they
always compatible with the standard 10 mV/°C signal of CAREL probes have no polarity, therefore it is not necessary to follow any specific order
(for negative temperatures and temperatures above 100 °C a probe alarm when connecting to the terminal block.
may be generated).
The inputs must be pre-configured for 0 to 1 V or 4 to 20 mA signals in the
application program resident in the flash memory. Connecting PT1000 temperature probes
The connection diagram is shown below: The pCO can be connected to 2-wire PT1000 sensors for all high
temperature applications; the operating range is: -100 to 200 °C. The
inputs must be pre-configured for PT1000 signals in the application
program resident in the flash memory.
The connection diagram is shown below:
input: 24 V 50...60 Hz / 28...36 V
F ieldB us c ar d B
input: 24 V 50...60 Hz / 28...36 V

J1 J24 J2 J3 J4 max. power: 45 VA/20 W
FieldBus card B M S card
+5 VREF
+Vterm
+VDC
GND
GND
VG0
BC4
BC5
VG
G0
Y1
Y2
B4
B5
B1
B2
B3
G
J1 J24 J2 J3 J4
+5 VREF
+Vterm
+VDC
GND
GND
VG0
B1
B2
B3
GND
+VDC
BC4
BC5
ID1
ID2
ID3
ID4
VG
G0
Y1
Y2
Y3
Y4
B4
B5
B1
B2
B3
G
B4
BC4
B5
BC5
RXW+
0
RXW7
*
Fig. 4.c
Fig. 4.a
Controller PT1000 probe wire
Controller pCO terminals Probe Description pCO5 probe 1 probe 2 probe 3 probe 4
terminals BC4 BC5 BC9 BC10 1
pCO5 GND M Reference B4 B5 B9 B10 2
+Vdc +(G) Power supply pCO probe 1 probe 2
B1, B2, B3, B6, out H Active humidity output compact B3 B4 1
B7, B8 (type A & B) GND GND 2
B1, B2, B3, B6, out T Active temperature output Tab. 4.d
B7, B8
5
pCO GND M Reference Warning:
compact +Vdc +(G) Power supply
B1, B2, B3, B4, out H Active humidity output (0
• correct measurements using the PT1000 sensor, each sensor wire must
(type A
B5, B6 to 1 V) be connected to an individual terminal, as shown in Figure 4.c;
e B)
B1, B2, B3, B4, out T Active temperature output(0 • the two wires of the PT1000 sensors are equivalent, as they have no
B5, B6 to 1 V) polarity, therefore it is not necessary to follow any specific order when
B1, B2 out H Active humidity output (4 connecting to the terminal block.
to 20 mA)
B1, B2 out T Active temperature output(4
to 20 mA)
Tab. 4.b Connecting current pressure probes
The pCO can be connected to all CAREL SPK* series active pressure probes
or any pressure probe available on the market with 4 to 20 mA signal.
Connecting universal NTC temperature probes The inputs must be pre-configured for 0 to 20 mA or 4 to 20 mA signals
All analogue inputs are compatible with 2-wire NTC sensors. The inputs in the application program resident in the flash memory.
must be pre-configured for NTC signals in the application program The connection diagram is shown below:
resident in the flash memory. The connection diagram is shown below:
input: 24 V 50...60 Hz / 28...36 V

Field Bu s car d BMS c
input: 24 V 50...60 Hz / 28...36 V
Fi el dB u s car d B M S car d
J1 J24 J2 J3 J4
+5 VREF
+Vterm
+VDC
GND
GND
VG0
BC4
BC5
VG
G0
Y1
Y2
Y3
Y4
B4
B5
B1
B2
B3
G
J1 J24 J2 J3 J4 J5
+5 VREF
+Vterm
+VDC
GND
GND
VG0
BC4
BC5
ID1
ID2
ID3
ID4
ID5
VG
G0
Y1
Y2
Y3
Y4
B4
B5
B1
B2
B3
G
B1
B2
B3
GND
+VDC
B1
B2
B3
GND
+VDC
B4
BC4
B5
BC5
Fig. 4.b Fig. 4.d
“pCO5” +0300009EN rel. 1.0 - 13.11.2011 27

ENG
Controller pCO terminals Probe wire colour Description Connecting analogue inputs selected as ON/OFF
pCO5 +Vdc brown power supply The pCO allows some analogue inputs to be configured as voltage-free
B1, B2, B3, B6, B7, B8 white signal digital inputs, not optically-isolated.
5
pCO +Vdc brown power supply
The inputs must be pre-configured as voltage-free digital inputs in the
compact B1, B2, white signal
application program resident in the flash memory.
(type A & B)
Tab. 4.e
Connecting 0 to 5 V ratiometric pressure probes input: 24 V 50...60 Hz / 28...36 V
The pCO can be connected to all CAREL SPKT series pressure probes or max. power: 45 VA/20 W
Fi el dBus car d BMS c
any pressure probe available on the market with 0/5 V ratiometric signal.
J1 J24 J2 J3 J4
The inputs must be pre-configured for 0/5 V ratiometric signals in the
+5 VREF
+Vterm
+VDC
GND
GND
VG0
BC4
BC5
VG
G0
Y1
Y2
Y3
B4
B5
B1
B2
B3
G
application program resident in the flash memory.
B4
BC4
B5
BC5
input: 24 V 50...60 Hz / 28...36 V
Fig. 4.g
F i el d Bu s ca r d BMS
Warning: the maximum current available at the digital input is 5
J1 J24 J2 J3 J4 mA (thus the rating of the external contact must be at least 5 mA).
+5 VREF
+Vterm
+VDC
GND
GND
VG0
BC4
BC5
VG
G0
Y1
Y2
Y3
B4
B5
B1
B2
B3
G
GND
+Vterm
GND
+5 VREF
B1
B2
B3
+VDC
Remote connection of analogue inputs

The sizes of the cables for the remote connection of the analogue inputs
are shown in the following table:
Fig. 4.e
type of input size (mm2) for length up size (mm2) for length up
to 50 m to 100 m
Controller pCO terminals Probe wire colour Description
NTC 0.5 1.0
pCO5 +5V Ref black power supply
PT1000 0.75 1.5
GND green power supply
I (current) 0.25 0.5
reference V (live) 0.25 0.5
B1, B2, B3, B6, B7, B8 white signal
Tab. 4.h
pCO5 +5V Ref black power supply
compact GND green power supply
(type A reference If the product is installed in industrial environments (application of EN
& B) B1, B2, B5, B6 white signal 61000-6-2) the connections must be less than 30 m long.
Tab. 4.f This length shouldn’t be exceeded in any case, to avoid measurement
errors.
Connecting active probes with 0 to 10 V output

The inputs must be pre-configured for 0 to 10 V signals in the application
program resident in the flash memory. 4.4 Fast digital inputs
On the pCO5 range (SMALL, MEDIUM, LARGE, EXTRALARGE) inputs B4
and B5 can be configured in the application as fast digital inputs. In
addition, input B5 can be enabled in the application to act as a counter.
In any case, the input must be connected to a voltage-free contact.
input: 24 V 50...60 Hz / 28...36 V
Fie ld B u s car d BMS card
J4
Important:
J1 J24 J2 J3
• the wires connecting the fast digital inputs must be shielded to avoid
+5 VREF
+Vterm
+VDC
GND
GND
VG0
BC4
BC5
ID1
ID2
VG
G0
Y1
Y2
Y3
Y4
B4
B5
B1
B2
B3
G
causing electromagnetic disturbance in the probe cables;

• separate as much as possible (at least 3 cm) the probe and digital
GND
+Vterm
GND
+5 VREF
B1
B2
B3
+VDC
input cables from the power cables to loads to avoid possible

electromagnetic disturbance. Never insert power cables (including the
out H
M
out T
electrical cables) and probe signal cables in the same conduits.
+ (G)
Fig. 4.f
Controller 0 to 10 V probe wire

pCO5 GND reference
B1, B2, B3, B6, B7, B8 signal
+Vdc brown
power supply (if used)
pCO5 compact GND reference
(type A & B) B1, B2, B5, B6 signal
+Vdc brown
power supply (if used)
Tab. 4.g
28 “pCO5” +0300009EN rel. 1.0 - 13.11.2011

ENG
Connection diagram Input signal characteristics
The fast digital input can be used as a counter. The count is performed on Type Voltage-free contact
the negative edge of the pulse. The pulse generator device will have two Typical current 5 mA
digital outputs with transistor optocoupler, which will be connected to Maximum frequency 2 kHz
the inputs shown as in the figure.. Tab. 4.j
Note: the BIOS provides the application one rewritable counter
C1
J11 pLAN J25 BMS2 J26 FBus2
variable.
J9 J10
J3
BC4
BC5
B4
B5
input: 24 V 50...60 H z / 28...36 V
On pCO compact the fast digital input is ID1 and the same details referring
FieldBus card
to B4 on the pCO5 are valid as regards the frequency counter function.
J1 J24 J2 J3
+5 VREF
+Vterm
+VDC
GND
GND
BC4
BC5
G0
B4
B5
B1
B2
B3
G
External
impulse
generator
Fig. 4.h
Input signal characteristics

Type Voltage-free contact
Typical current 5 mA
Maximum frequency 2 kHz
Tab. 4.i
Note: the BIOS makes provides two variables to the application

program that contain the frequency in Hz.
Example: typical waveforms of input signals
input
t
count t
Fig. 4.i
Counter function
As mentioned, only input B5 can be configured as a counter.
The pulse generator device will have a digital output with transistor
optocoupler, connected to input B5 as shown in the figure.
J3
BC4
BC5
B4
B5
External
impulse
generator
Fig. 4.j
Il The application program decides when to reset the counter. The
maximum number of pulses is 65535, then the counter restarts from zero.
“pCO5” +0300009EN rel. 1.0 - 13.11.2011 29

ENG
4.5 Connecting the digital inputs the presence of voltage across the contact must be the normal operating
condition, while no voltage must represent an alarm situation. This will
The pCO features digital inputs for connecting safety devices, alarms,
ensure that any interruption (or disconnection) of the input will also be
device status and remote switches. These inputs are all optically isolated
signalled. Do not connect the neutral in place of an open digital input.
from the other terminals. They can work at 24 Vac, 24 Vdc and some at
Always interrupt the phase. The 24 Vac or 28 to 36 Vdc digital inputs have
230 Vac.
a resistance of around 5 kΩ.
Note: separate as much as possible the probe signal and digital input
cables from the inductive load and power cables, to avoid possible
electromagnetic disturbance.
24 Vac digital inputs
On the pCO5 all inputs can be 24 Vac.
Important warning: if the control voltage is drawn in parallel with The following figure represents one of the most common connection
a coil, fit a dedicated RC filter in parallel with the coil (typical ratings are diagrams for the 24 Vac digital inputs, referred to the pCO5.
100 Ω, 0.5 μF, 630 V).
If connecting the digital inputs to safety systems (alarms), remember that:
C9
NO9
NO10
NO11
C9
NO12
C12
NC12
NO13
C13
NC13
C1
NO1
NO2
NO3
C1
C4
NO4
NO5
NO6
C4
C7
NO7
C7
NO8
C8
NC8
J15 J16 J17 J18
J12 J13 J14
NO14
C14
NC14
NO15
C15
NC15
C16
NO16
NO17
NO18
C16
J9 J10 J21 J22 J23 FBus2
input: 24 V 50...60 Hz / 28...36 V

max. power: 45 VA/20 W J19 J20
FieldBus card BMS card
ID15H
ID16H
IDC15
IDC17
BC10
ID15
ID16
ID18
ID17
BC9
B10
B9
Y5
Y6
J1 J24 J2 J3 J4 J5 J7
+5 VREF
+Vterm
J6
ID13H
ID14H
IDC13
+VDC
GND
GND
IDC1
GND
IDC9
VG0
ID10
ID11
ID12
ID13
ID14
BC4
BC5
ID1
ID2
ID3
ID4
ID5
ID6
ID7
ID8
VG
ID9
G0
Y1
Y2
Y3
Y4
B4
B5
B1
B2
B3
B6
B7
B8
J8
G
ID13H
ID14H
ID10
ID11
ID12
ID13
ID14
IDC13
ID9
IDC9
ID1
ID2
ID3
ID4
ID5
ID6
ID7
ID8
IDC1
G
G0
24 Vac
ID15H
ID16H
IDC15
IDC17
BC10
ID15
ID16
ID17
ID18
BC9
B10
BMS card
Y5
Y6
B9
G
G0
Fig. 4.k
30 “pCO5” +0300009EN rel. 1.0 - 13.11.2011

ENG
24 Vdc digital inputs
On the pCO5: all inputs can be 24 Vdc.
The following figure represents one of the most common connection
diagrams for the 24 Vdc digital inputs, referred to the pCO5.
C9
NO9
NO10
NO11
C9
NO12
C12
NC12
NO13
C13
NC13
C1
NO1
NO2
NO3
C1
C4
NO4
NO5
NO6
C4
C7
NO7
C7
NO8
C8
NC8
J15 J16 J17 J18
J12 J13 J14
NO14
C14
NC14
NO15
C15
NC15
C16
NO16
NO17
NO18
C16
J9 J10 J21 J22 J23 FBus2
input: 24 V 50...60 Hz / 28...36 V

F i e l d Bu s ca r d B M S c ard
ID15H
ID16H
IDC15
IDC17
BC10
ID15
ID16
ID18
ID17
BC9
B10
B9
Y5
Y6
J1 J24 J2 J3 J4 J5 J7
+5 VREF
+Vterm
J6
ID13H
ID14H
IDC13
+VDC
GND
GND
IDC1
GND
IDC9
VG0
ID10
ID11
ID12
ID13
ID14
BC4
BC5
ID1
ID2
ID3
ID4
ID5
ID6
ID7
ID8
VG
ID9
G0
Y1
Y2
Y3
Y4
B4
B5
B1
B2
B3
B6
B7
B8
J8
G
ID9
ID10
ID11
ID12
IDC9
ID13H
ID13
IDC13
ID14
ID14H
ID1
ID2
ID3
ID4
ID5
ID6
ID7
ID8
IDC1
24 Vdc
+
ID15H
IDC15
ID16H
IDC17
B M S c ard
BC10
ID15
ID16
ID17
ID18
BC9
B10
Y5
Y6
B9
24 Vdc
+
Fig. 4.l
Connecting the digital inputs for the pCO5 compact
pCO5 compact features up to 6 (or 4, depending on the model) digital
inputs, not optically-isolated, with voltage-free contacts for connection
to safety devices, alarms, device status, remote on/off switches, etc.; these
operate at 24 Vdc (supplied by pCO5 compact) with guaranteed contact
current of 6 mA.
Warning: separate as much as possible the probe signal and

digital input cables from the inductive load and power cables, to avoid
possible electromagnetic disturbance.
The following figure shows the digital input connection diagram for
pCO5 compact, TYPE A and TYPE B respectively.
TYPE A TYPE B
Y1
Y2
C2
NO2
GND
GND
TLAN
Y1
Y2
C2
NO2
GND
GND
TLAN
PWM 0/10V
Tx/Rx GND Tx/Rx GNX PWM 0/10V
Tx/Rx GND Tx/Rx GNX
J5 J6 J7 J8 IS OLATED
J9 J 10 J5 J6 J7 J8 IS OLATED
J9 J10
B7
B8
C3
C3
ID2
GND
NO3
NO4
NO5
NO6
NO7
Y3
Y4
C3
C5
ID2
J4
GND
NO4
NO3
NO6
NO5
J11 J 12 J4 0/10V 0/10V

J11 J12 J13
input voltage: max. p ower:

24 V (+10/-15%); 50/60 H z
14 VA /11 W serial card 1 input voltage:
24 V (+10/-15%); 50/60 H z
max. p ower:
14 VA /11 W serial card 1
J1 J2 J3 J1 J2 J3
+5Vref
+VDC
SYNC
+5Vref
GND
GND
NO1
NC1
+VDC
SYNC
ID1
GND
GND
G0
NO1
C1
NC1
B1
B2
B3
B4
B5
B6
ID1
G
G0
C1
B1
B2
B3
B4
B5
B6
G
Fig. 4.m Fig. 4.n

“pCO5” +0300009EN rel. 1.0 - 13.11.2011 31
ENG
230 Vac digital inputs 4.6 Connecting the analogue outputs
PCO5 ONLY Connecting 0 to 10 V analogue outputs
There are up to two groups of inputs that can be powered at 230 Vac;
The pCO5 provides 0 to 10 V optically-isolated analogue outputs,
each group has two inputs. The groups feature double insulation
powered externally at 24 Vac or 28 to 36 Vdc. Fig. 4.p below shows the
between them and can refer to different voltages. Within each group the
electrical connection diagram; the 0 V of the power supply is also the
digital inputs are not independent, however: for example, with reference
reference for the output voltage. The table shown below summarises the
to Fig. 4.o inputs ID15 and ID16, due to the common terminal, must be
distribution of the analogue outputs according to the versions available.
powered at the same voltage to avoid dangerous short-circuits and/or
the powering of lower-voltage circuits at 230 Vac. In any case, the inputs
feature double insulation from the rest of the controller. analogue outputs reference
The following figure represents one of the most common connection pCO5 terminals SMALL Y1, Y2, Y3, Y4 VG0
diagrams for the 230 Vac digital inputs. MEDIUM Y1, Y2, Y3, Y4
LARGE Y1, Y2, Y3, Y4, Y5, Y6
XL Y1, Y2, Y3, Y4
pCO5 compact terminals (type A) Y2 GND
pCO5 compact terminals (type B) Y2, Y3, Y4 GND
ID15H
ID16H
IDC15
Tab. 4.m
ID15
ID16
BMS Card
Warning: on the pCO5 compact the outputs are not optically-

isolated. Remember however that the internal circuit in the power supply
ID13H
ID14H
ID13
ID14
IDC13
to the pCO5 compact is isolated.
IDC17
BC10
ID17
ID18
BC9
B10
Y5
Y6
B9
BMS Card
Fig. 4.o
The range of uncertainty of the switching threshold is from 43 to 90 Vac.
It is recommended to use a 100 mA fuse in series with the digital inputs.
VG0
Y1
Y2
Y3
Y4
VG
Vout
input
Vout
pCO5 terminals 13, 14, 15, 16 Vout
Tab. 4.k Vout

Vout
24 Vac/Vdc
Vout
0V
Warnings for 230 Vac digital inputs:
• 230 Vac 50/60 Hz +10/-15 %; Fig. 4.p
• for each group, the two inputs - 24 Vac or 28 to 36 Vdc or 230 Vac - have
the same common pole, the inputs will both work at the same voltage Vout
(24 Vac or 28 to 36 Vdc or 230 Vac) with basic insulation.
Y1
Y2
C2
NO2
GND
GND
TLAN PWM 0/10V
Tx/Rx GND Tx/Rx GNX
J9 J 10
Remote connection of digital inputs
B7
B8
C3
C3
ID2
GND
NO3
NO4
NO5
NO6
NO7
Important note: do not connect other devices to IDn. J4

J11 J12
The sizes of the cables for the remote connection of the digital inputs are
shown in the following table:
size (mm2) for length up to 50 m size (mm2) for length up to 100 m Vout Vout
Vout
0.25 0.5
Tab. 4.l
Y1
Y2
C2
NO2
GND
GND
TLAN
PWM 0/10V
Tx/Rx GND Tx/Rx GNX
J9 J 10
If the product is installed in industrial environments (application of EN
61000-6-2) the connections must be less than 30 m long.
Y3
Y4
C3
C5
ID2
GND
NO4
NO3
NO6
NO5
This length shouldn’t be exceeded in any case, to avoid reading errors. J4 0/10V 0/10V
J11 J12 J13
Fig. 4.q
32 “pCO5” +0300009EN rel. 1.0 - 13.11.2011

ENG
Connecting PWM analogue outputs Optional modules
pCO5 and pCO5 compact provide a PWM analogue output for phase
cutting speed controllers. Fig.4.q shows the most common wiring Module for converting a PWM analogue output to a linear 0 to 10 V
diagrams for pCO compact. For pCO5 see Fig. 4.p. and 4 to 20 mA analogue output
The module is used to convert a PWM output (5 V pulses) to a linear 0 to
10 V and 4 to 20 mA analogue output (code CONV0/10A0).
Y1
Y2
C2
NO2
GND
GND
TLAN
Tx/Rx GND Tx/Rx GNX
PWM 0/10V
The control signal (at the input terminals optically-isolated from the rest
J9 J10
of the module) must have a maximum amplitude of 5V and a period
between 8 ms and 200 ms. The 0 to 10 V output voltage can be connected
B7
B8
C3
C3
ID2
GND
NO3
NO4
NO5
NO6
NO7
J4
J 11 J12
to a maximum load of 2 kΩ, with a maximum ripple of 100 mV, while the
4 to 20 mA current output can be connected to a maximum load of 280
Ω, with maximum overshoot of 0.3mA.
The module’s physical dimensions are 87x36x60 mm (2 DIN modules) and
has IP20 index of protection.
Module for converting a 0 to 10 V analogue output to an SPDT

digital output (code CONVONOFF0)
input voltage: max. p ower: The module is used to convert a 0 to 10 V analogue output (Yn) to an
24 V (+10/-15%); 50/60 H z
ON/OFF relay output. The control signal (at the input terminals, optically-
isolated from the rest of the module), to ensure the switching of the relay
J1 J2 J3 from OFF to ON, must have a maximum amplitude of 3.3 V. The relay is
+5Vref
+VDC
SYNC
GND
GND
SPDT, with max current of 10 A and max inductive load of 1/3 HP. The
NO1
NC1
ID1
G0
C1
B1
B2
B3
B4
B5
B6
G
module’s physical dimensions are 87x36x60 mm (2 DIN modules) and has

IP20 index of protection.
MCHRTF
Module to divide the number of pulses at the digital input by 8
L1 (code PCO208DI00)
The module is used to independently divide the frequency of two signals
N by a factor of 8. The two input signals (at the input terminals, optically-
isolated from the rest of the module) must have a amplitude between
10 and 20V, a duration greater than 10 ms and a maximum frequency
of 10 Hz.
The module’s physical dimensions are 87x36x60 mm (2 DIN modules) and
has IP20 index of protection.
Y1
Y2
C2
NO2
GND
GND
TLAN
PWM 0/10V
Tx/Rx GND Tx/Rx GNX
J9 J10
B7
B8
C3
C3
ID2
GND
NO3
NO4
NO5
NO6
NO7
J4
J 11 J12
input voltage: max. p ower:

24 V (+10/-15%); 50/60 H z
J1 J2 J3
+5Vref
+VDC
SYNC
GND
GND
NO1
NC1
ID1
G0
C1
B1
B2
B3
B4
B5
B6
G
MCHRTF
L1
Fig. 4.r
analogue outputs reference

pCO5 terminals Y3, Y4 VG0
pCO5 compact Y1 GND
terminals (type A & B)
Tab. 4.n
“pCO5” +0300009EN rel. 1.0 - 13.11.2011 33

ENG
4.7 Connecting the digital outputs
The pCO features digital outputs with electromechanical relays. For ease
of installation, the common terminals of some of the relays have been
grouped together. If the following diagram is used (Fig. 4.p), the current
at the common terminals must not exceed the rating (nominal current)
of a single terminal (8A).
Electromechanical relay digital outputs
N
110/230-24 ac
V
NO10
NO11
NO13
NO12
NC13
NC12
NO1
NO2
NO3
NO4
NO5
NO6
NO7
NO8
NO9
NC8
C13
C12
C1
C1
C4
C4
C7
C7
C8
C9
C9
C9
NO9
NO10
NO11
C9
NO12
C12
NC12
NO13
C13
NC13
C1
NO1
NO2
NO3
C1
C4
NO4
NO5
NO6
C4
C7
NO7
C7
NO8
C8
NC8
J15 J16 J17 J18
J12 J13 J14
N
110/230-24 V
L
NO14
C14
NC14
NO15
C15
NC15
C16
NO16
NO17
NO18
C16
J21 J22 J23 FBus2
Fig. 4.s
The relays are divided into groups, according to the insulation distance.
Inside each group, the relays have just basic insulation and thus must
have the same voltage (generally 24 V ac or 110 to 230 Vac). Between the
groups there is double insulation and thus the groups can have different
voltages. There is also double insulation from the rest of the controller.
Changeover outputs
Some relays feature changeover outputs:
Changeover relay reference
pCO5 terminals 8, 12, 13, 14,15
pCO5 compact terminals 1
Tab. 4.o
Solid state relay (SSR) digital outputs

pCO5 The pCO also features a version with solid state relays (SSR) for
controlling devices that require an unlimited number of switching cycles
and thus would not be supported by electromechanical relays. These
outputs are dedicated are dedicated to loads powered at 24 Vac or 28 to
36 Vdc with maximum power Pmax= 10 W.
These three fundamental rules should be adopted in pCO applications
with SSR outputs:
1. only control resistive loads with a maximum power of 10 W;
2. to control inductive loads use an additional external SSR;
3. for AC power supply to resistive loads or external SSRs, use the same
power supply as the pCO (connected to terminals G/G0), which
as always must be specified, dedicated and not in common with
the power supply to other devices on the electrical panel (such as
contactors, coils, etc...)
34 “pCO5” +0300009EN rel. 1.0 - 13.11.2011

ENG
24 Vac/Vdc
NO1
NO2
NO3
NO4
NO5
NO6
NO7
NO8
NC8
C1
C1
C4
C4
C7
C7
C8
Fig. 4.t
Correct application for inductive loads:
24 Vac/Vdc(*)
SSR ESTERNO/
input
(*) Dedicata o la stessa alimentazione di G/G0 del pCO carico/load
NON in comune con altri carichi esterni. EXTERNAL SSR
(*) Dedicated or the same of G/G0 of pCO not in common
NO1
NO2
NO3
NO4
NO5
NO6
NO7
NO8
NC8
C1
C1
C4
C4
C7
C7
C8
with other external load.
Fig. 4.u
Changeover relay reference
pCO5 terminals SMALL 7
MEDIUM 7, 12
LARGE 7, 12, 14 o 7, 12, 14, 15
XL 7, 12
pCO5 compact TYPE A 1, 2
terminals
TYPE B 1, 2 o 3, 4, 5, 6
Tab. 4.p
Warning: the SSR relay load is powered at 24 Vac or 28 to 36 Vdc

thus all the other terminals in the group, from 1 to 6, must be powered at
the same voltage due to the absence of double insulation within the
group.
Warning: if the power supply to the internal SSR internal is shared

with inductive loads (contactor coils and solenoids), fit a dedicated RC
filter in parallel with the inductive load (typical ratings are 100 Ω, 0.5 μF,
630 V).
Summary table of digital outputs according to the

versions available
NO NC changeover total SSR relay
contacts contacts relay outputs reference
reference
pCO5 SMALL 7 - 1 (8) 8 1 (7)
terminals MEDIUM 10 - 3 (8, 12, 13) 13 2 (7, 12)
LARGE 13 - (8, 12, 13, 14, 18 3 (7, 12, 14)
15) o 4 (7, 12,
14, 15)
XL 26 - (8, 12, 13) 29 7, 12
pCO5 TIPO A 7 - 1 8 1, 2
compact 10 - 1 13 2 (1, 2) o 4
terminals (3, 4, 5, 6)
Tab. 4.q
Remote connection of digital outputs

The sizes of the cables for the remote connection of the digital outputs
are shown in the following table:
AWG Size (mm2) Current
20 0.5 2
15 1.5 6
14 2.5 8
Tab. 4.r
“pCO5” +0300009EN rel. 1.0 - 13.11.2011 35

ENG
5. PLAN NETWORK CONFIGURATION
5.1 Introduction
All pCO controllers can be connected together and to other CAREL
devices in a pLAN local network, without requiring optional devices,
allowing the communication of data and information from one location
(node) to another.
The pCO terminals can show the variables (temperature, humidity,
pressure, I/O, alarms) from just one controller at a time. The terminal
does not need to be connected to the pCO during normal operation,
but rather can be used just for initial programming of the fundamental
parameters.
one or more terminals are disconnected or malfunctioning, the control
program continues to function correctly on each pCO board.
Generally, the application program can monitor the status of the network
and intervene as a consequence to ensure the continuity of the control
functions.
The figure below shows a possible pLAN network connection diagram
pGDE/pGD1 pGDE/pGD1
pLAN (RS485 62.5 kbit)

input: 24 V 50...60 Hz / 28...36 V
max. power: 40 VA/15W

input: 24 V / ; 50 to 60 Hz
24 V (+10/-15%); 50/60 H z
input voltage:
G G
G
J1
J1
J1
G0 G0
J9
J9
G0
J4
Tx/Rx
SYNC
J5
14 VA /11 W
max. p ower:
+Vterm +Vterm C3
GND
J24
J24
J10
J10
GND GND B1 NO3

J2
J6
+5 VREF +5 VREF B2 NO4
J 11
J11 pLAN
Rx-/Tx-
B3 NO5
se ri a l c ard 1
J11
Rx+/Tx+
B1 NO6 TLAN
J7
GND GND
NO7
B2
C3
J2
J2
F ieldB us card
J8
B3
J25 BMS2 J26 FBus2
field card
Tx/Rx
service card
IS OLATED
GND
GND
GND
GNX
+5Vref
+VDC
+VDC ID2
B4 B4
PWM 0/10V
J 12
B7 Y1
ID1
BC4 BC4
J9
J3
Y2
J3
GND B8
B5 B5
GND
BC5 BC5 C1
J3
NC1 NO2
J 10
NO1 C2
C1 C1
NO1 NO1
J12
J12
NO2 VG NO2
VG
NO3 VG0 NO3
VG0
C1 Y1 C1
Y1
J4
pCO5 compact
J4
serial card
B M S card
Y2 C4 Y2 C4
NO4 Y3 NO4
Y3
J13
J13
IND: N
NO5 Y4 NO5
Y4
ID1 NO6 NO6
ID2 C4 C4
ID3 C7
C7
J14
ID4 NO7
J14
J5
NO7
J5
ID5 C7
NO14 C7
ID6
C14 NO8
NO8
ID7
NC14 C8
J15
C8
J21
J15
ID8
ID15H NO15 NC8
NC8
IDC1
ID15 C15
J19
IDC15 B6
B6 NC15
ID16 B7
J6
B7
J6
B8
B8 ID16H C9
J16
C9
J16
GND
GND NO9
NO9
C16
ID9 NO10
NO10
NO16
ID10 NO11
J7
NO11
J22
NO17
J7
ID11 C9
C9
NO18
ID12
Y5
C16 NO12
IDC9 NO12
Y6
C12
J17
C12
J17
ID13H B9
NC12
NC12
J23 FBus2
ID13 BC9
J20
IDC13 B10 NO13

NO13
C13
J18
ID14 BC10
C13
J18
ID14H ID17 NC13

NC13
J8
J8
ID18
IDC17
3
pCO5 IND: 1 pCO IND: 2
Fig. 5.a
The standard communication speed over the network is 62500 bps; some
Each terminal associated with a board can be defined as:
devices also support speeds of 115200 bps.
- private (“Pr”) if it exclusively displays the output of that board;
All units in the network must however be set with the same speed.
- shared (“Sh”) if either automatically or from the keypad it can be switched
A maximum of 32 units can be connected, including:
between various boards;
- pCO controllers that run the control program;
- shared with printer (“Sp”) if, as well as being be shared it’s fitted with an
- boards that extend the I/O functions (such as the EVDevo driver);
RS232 serial card connecting a printer (valid only for the old PCOT and
- terminals (8x22).
PCOI terminals, not the pGD).
Each unit in the pLAN is identified by a unique address, i.e. a number
Each pCO constantly updates the display on the private terminals, while
between 1 and 32. The latter (32) can only be assigned to a terminal.
the shared terminals are only updated only if the pCO in question has
Programs for different applications (e.g.: standard chiller, standard air-
control over the terminal at that moment.
conditioners, compressor rack, ...) cannot automatically be integrated
into a local network: they must be configured considering the system
architecture using the Carel development tool.
Each pCO board connected to the network can manage a series of
terminals at the same time. The values are displayed on the terminals
simultaneously and not independently, as if the keypads and display were
connected in parallel: for this reason, the pCO cannot control different
types of terminals at the same time.
36 “pCO5” +0300009EN rel. 1.0 - 13.11.2011

ENG
For details of the logic see the following figure
S&2 3*'(3ULYDWH S&2 3*'(3ULYDWH

input: 24 V 50...60 Hz / 28...36 V

input: 24 V 50...60 Hz / 28...36 V
G G
J1
J1
G0 G0
J9
J9
+Vterm +Vterm
J24
J24
J10
J10
GND GND
+5 VREF +5 VREF
J11 pLAN
J11 pLAN
B1 B1
B2 B2
J2
FieldBus card
J2
FieldBus card
J25 BMS2 J26 FBus2
B3
J25 BMS2 J26 FBus2

B3
GND GND
+VDC +VDC
B4 B4
BC4 BC4
J3
J3
B5 B5
BC5 BC5
C1 C1
NO1 NO1
J12
J12
VG NO2 NO2
VG
VG0 NO3 NO3
VG0
Y1 C1 C1
Y1
J4
J4
B M S card
B M S card
Y2 C4 Y2 C4
Y3 NO4 Y3 NO4
J13
J13
Y4 NO5 Y4 NO5
ID1 NO6 ID1 NO6
ID2 C4 ID2 C4
ID3 ID3
C7 C7
ID4 ID4
J14
J14
NO7 NO7
J5
J5
ID5 ID5
NO14 C7 NO14 C7
ID6 ID6
C14 C14
S*'(S*'6KDUHG
NO8 NO8
ID7 ID7
NC14 NC14
C8
J21
C8
J21
J15
J15
ID8 ID8
ID15H NO15 ID15H NO15
IDC1 NC8 NC8
IDC1
ID15 C15 ID15 C15
J19
J19
B6 IDC15 NC15 B6 IDC15 NC15
B7 ID16 B7 ID16
J6
J6
B8 ID16H B8 ID16H
C9
J16
C9
J16
GND GND
NO9 NO9
C16 C16
ID9 ID9
NO10 NO10
NO16 NO16
ID10 ID10
NO11
J22
NO11
J22
NO17
J7
NO17
J7
ID11 ID11
C9 C9
NO18 NO18
ID12 ID12
Y5 Y5
C16 C16
IDC9 NO12 IDC9
Y6 Y6 NO12
C12 C12
J17
J17
ID13H B9 ID13H B9
NC12 NC12
J23 FBus2
ID13 BC9
J23 FBus2
ID13 BC9
J20
J20
IDC13 B10 IDC13 B10
NO13 NO13
ID14 BC10 ID14 BC10
C13
J18
C13
J18
ID14H ID17 ID14H ID17
NC13 NC13
J8
ID18
J8
ID18
IDC17 IDC17

S&2 3*'(3ULYDWH 3*'(3ULYDWH
S&2FRPSDFW
input: 24 V 50...60 Hz / 28...36 V
G
J1
G0
J9
24 V (+10/-15%); 50/60 H z
input voltage:
+Vterm G
J1
J24
J10
GND
G0
J4
+5 VREF
J11 pLAN
Tx/Rx
J5
SYNC
14 VA /11 W
max. p ower:
B1 C3
GND
B2 NO3
B1
J2
FieldBus card
J2
J6
J25 BMS2 J26 FBus2
B3
B2 NO4
J11
GND
B3 NO5
serial card 1
+VDC
NO6 TLAN
J7
B4
GND
BC4 NO7
J3
B5 C3
J8
Tx/Rx
BC5
IS OLATED
GND
GNX
+5Vref GND
C1
+VDC ID2
PWM 0/10V
NO1
J12
B7 Y1
ID1
J12
NO2
J9
VG Y2
GND B8
VG0 NO3
GND
Y1 C1
C1
J4
B M S card
Y2 C4
J3
NC1 NO2
J10
Y3 NO4
NO1 C2
J13
Y4 NO5
ID1 NO6
ID2 C4
ID3
C7
ID4
J14
NO7
J5
ID5
NO14 C7
ID6
C14
ID7 NO8
NC14
C8
J21
J15
ID8
ID15H NO15
IDC1 NC8
ID15 C15
J19
B6 IDC15 NC15
B7 ID16
J6
B8 ID16H
C9
J16
GND
NO9
C16
ID9
NO10
NO16
ID10
NO11
J22
NO17
J7
ID11
C9
NO18
ID12
Y5
C16
IDC9 NO12
Y6
C12
J17
ID13H B9
NC12
J23 FBus2
ID13 BC9
J20
IDC13 B10
NO13
ID14 BC10
C13
J18
ID14H ID17
NC13
J8
ID18
IDC17
Fig. 5.b
IIn this example the shared terminal is associated with 4 pCOC controllers
however at this instant only controller 1 can display data and receive
controls from the keypad.
Switching between controllers occurs is cyclical (12341...)
and is done by pressing a button defined by the application program,
however it can also be managed automatically when set by the program:
for example, a pCO may request control of the shared terminal to display
alarms or, vice-versa, relinquish control to the next pCO after a set time
(cyclical rotation).
The data corresponding to the number and type of terminals are
established in the initial network configuration phase, saving them to
the permanent memory on each individual pCO controller. Details of
the configuration procedure are described below. The pLAN connection
between two pCO controllers is performed only using a AWG20/22
shielded cable made up of twisted pair plus shield. Connection between
a terminal and a pCO can be performed using a 6-wire telephone cable or
AWG20/22 shielded cable, depending on the model of terminal.
Further details on installation of the terminals are provided in the section
on “pLAN electrical connections”.
“pCO5” +0300009EN rel. 1.0 - 13.11.2011 37

ENG
5.2 pGDE/pGD1 terminal installation 1. Press ENTER again: the configuration screen will be shown, similar to
the one below.
Connection between the terminal and the pCO is made using a 6-wire
telephone cable supplied by CAREL (code S90CONN).
To make the connection simply plug the telephone connector into the
RJ12 jack on the rear of the terminal and connector:
• J10 on pCO5;
• J14 on pCO5 compact.
The address of the terminal can be set in the range from 0 to 32; addresses
between 1 and 32 are used by the pLAN protocol, while address 0 Fig. 5.f
identifies the Local terminal protocol, used for non-graphic point-to-
point connections and to configure the pCO. The default address is 32. Configure the terminals as desired. ENTER moves the cursor from one
The address of the terminal can only be set after having powered the field to the next, while UP and DOWN change the value of the current
terminal via the RJ12 connector. To access configuration mode press UP, field.
DOWN and ENTER (,,  ) together for at least 5 seconds; terminal will P:xx displays the address of the selected pCO board (in the example in the
display a screen similar to the one shown below, with the cursor flashing figure this is board 1).
in the top left corner:
To exit the configuration procedure and save the data, select “Ok?”, set
“Yes” and confirm by pressing ENTER.
During the configuration procedure, if the terminal remains inactive (no
button is pressed) for more than 30 seconds, the pCO board automatically
interrupts the procedure without saving any changes.
Fig. 5.c Important: the pGD* terminals cannot be configured as “Sp”

(shared with printer) as they have no printer output. Selecting this mode
To modify the address of the terminal (“Display address setting”) carry out has no effect on management of the messages to be printed.
the following operations in sequence. if during operation the terminal detects inactivity on the pCO board it
Press ENTER once: the cursor will move to the “Display address setting” is connected to, the display is cleared and a message similar to the one
field. shown below is displayed:
Select the desired value using the UP and DOWN buttons, and confirm
by pressing ENTER again.
If the value selected is different from the value saved, the following screen
will be displayed and the new value will be saved to the permanent
memory on the display.
Fig. 5.g
If the terminal detects inactivity of the entire pLAN network, that is, it does
not receive any messages from the network for 10 seconds consecutively,
the display is cleared completely and the following message is shown:
Fig. 5.d
If the address field is set to 0, the terminal communicates with the pCO
board using the Local terminal protocol and the “I/O Board address” field
disappears, as it no longer has any meaning. To modify the list of the
terminals (private and shared) associated with a pCO board, carry out the
following operations in sequence:
Fig. 5.h
• enter configuration mode (see above) pressing the UP, DOWN and
ENTER buttons together for at least 5 seconds.
• press ENTER twice: the cursor will move to the “I/O Board address” field.
• select the address of the pCO board in question and confirm by
pressing ENTER.
Then the pCO will start the configuration procedure, opening a screen
similar to the following.
Fig. 5.e
38 “pCO5” +0300009EN rel. 1.0 - 13.11.2011

ENG
5.3 pLAN address configuration on pCO5 Setting by built-in terminal (applies to pCO5 and pCO5 compact)
The address can be set using the built-in terminal, if featured.
and pCO5 compact
On the pCO5 range (SMALL, MEDIUM, LARGE, EXTRALARGE) the
controller’s pLAN address can be assigned in two different ways:
1. using the new function for pCO5 with special button and display
with two 7 segment LEDs;
2. using the built-in or external terminal (e.g. pGD1).
The default pLAN address setting of the pCO5 programmable controller
is 1 and it’s assigned to the private terminal with address 32.
Setting by button and display (only applies to pCO5)

The special button (A) is located on the left of the display. To access it use Fig. 5.k
the tip of a screwdriver (diam. <3mm).
Displaying the pLAN address Procedure:

Procedure: 1. Power down the controller.
• press button A briefly (no more than 5 s) to display the controller’s
current pLAN address. Five seconds after releasing the button the
display is cleared.
Loading...
C1
NO1
NO2
NO3
C1
C4
J12
J9 J10
Fig. 5.l
2. Press the Alarm and Up buttons together and power up the controller.
input: 24 V / ; 50 to 60 Hz
FieldBus card
###################
selftest
J1 J24 J2 J3 J4
please wait...
+5 VREF
+Vterm
+VDC
GND
GND
VG0
BC4
BC5
VG
G0
Y1
Y2
B4
B5
B1
B2
B3
G
###################
A
Fig. 5.m
Fig. 5.i
A test phase begins. Continue holding Alarm and Up.
Setting the pLAN address
3. The screen for setting the address is displayed. Press UP/DOWN to
Procedure:
select the address.
1. press button A for 5 seconds. The pLAN address starts flashing;
2. press repeatedly or hold the button until reaching the desired
address (e.g. 7); remove the screwdriver; pLAN address: 1
3. wait until the address starts flashing quickly. The address is now UP: increase
saved but is not yet active for the application program DOWN: decrease
4. power down the controller; ENTER: save & exit
5. power up the controller again. The address is now used by the
application.
Fig. 5.n
C1
NO1
NO2
NO3
C1
C4
J12
4. Confirm by pressing ENTER. The address is saved. Wait a few seconds to
J9 J10 return to the standard display.
‹
input: 24 V / ; 50 to 60 Hz
FieldBus card
J1 J24 J2 J3 J4
+5 VREF
+Vterm
+VDC
GND
GND
VG0
BC4
BC5
VG
G0
Y1
Y2
B4
B5
B1
B2
B3
G
Fig. 5.o
Fig. 5.j
“pCO5” +0300009EN rel. 1.0 - 13.11.2011 39

ENG
Setting by external terminal (applies to pCO5 and pCO5 4. Power up the controller holding the Alarm and Up buttons together.
compact) Continue holding Alarm and Up until the following screen is
The controller address can be set using an external terminal, after having displayed.
connected this to connector J10 on the pCO5 controller via pLAN.
All the other devices connected to the controller via pLAN must be
disconnected. #######################
selftest

please wait...
#######################
C1
NO1
NO2
NO3
C1
C4
J12
J9 J10
Fig. 5.t
5. If necessary set the controller’s pLAN address and confirm by

pressing Enter.
input: 24 V / ; 50 to 60 Hz
FieldBus card
J1 J24 J2 J3 J4
+5 VREF
+Vterm
+VDC
GND
GND
VG0
BC4
BC5
VG
G0
Y1
Y2
B4
B5
B1
B2
B3
G
pLAN address: 7
UP: increase
Fig. 5.p
Note: the default pLAN address setting is 1; the pCO5 is also DOWN: decrease
assigned to a private terminal with address 32. ENTER: save & exit
If the pCO5 with default setting (address=1) is connected to an external

terminal (address=32), communication is established and the external Fig. 5.u
terminal replicates the display on the built-in terminal, if featured.
If however the pCO5 controller has a different address (e.g. 7) and the Controller-terminal connection
terminal is not set to communicate with the controller at this address, The pCO controller address is now known. Then set the terminal address
once the connection is established the terminal displays a blank screen. (e.g. 2) and establish the connection between the two devices.
In this case, proceed as follows. Procedure:
Procedure:
1. Press the UP, DOWN and Enter buttons together to enter the screen 1. Press the UP, DOWN and Enter buttons together. The screen for setting
for setting the terminal address the terminal address is displayed. Change the address and confirm by
pressing Enter.
Display address
setting...........:02 Display address
setting..........:00
I/O Borad address:07
Fig. 5.q
Fig. 5.v
2. Set the address of the display to 0. Confirm by pressing Enter.
2. The display shows no messages.
Display address
setting..........:00 NO LINK
Fig. 5.r
Fig. 5.w
3. Power down the controller.
3. Press the UP, DOWN and Enter buttons together. Press Enter twice and
set the controller address: 7. Confirm by pressing Enter.

C1
NO1
NO2
NO3
C1
C4

J12
Display address
J9 J10 setting...........:02
I/O Borad address:07

input: 24 V / ; 50 to 60 Hz
FieldBus card
J1 J24 J2 J3 J4
Fig. 5.x
+5 VREF
+Vterm
+VDC
GND
GND
VG0
BC4
BC5
VG
G0
Y1
Y2
B4
B5
B1
B2
B3
G
Fig. 5.s
40 “pCO5” +0300009EN rel. 1.0 - 13.11.2011

ENG
4. Confirm by pressing Enter. 5. Set the terminal 1 (Trm1) with address 2 as private (Priv) or shared
(Shared) according to the application and confirm to exit. The connection
is established after a few seconds.
Terminal config
press ENTER
to continue P:07 Adr Priv/Shared
Trm1 02 Pr
Trm2 None --
Trm3 None -- Ok? Yes
Fig. 5.y
Fig. 5.z
5.4 pLAN electrical connections on the pCO

Connection between pCO boards in a pLAN is carried out exclusively using AWG20/22 shielded, twisted pair cable, with capacitance between the wires
less than 90 PF/m.
Maximum pLAN network length: 500 m with AWG22 shielded twisted pair cable.
The boards are connected in parallel, with connector J11 as the reference.
IMPORTANT: observe the network polarity: RX/TX+ on one board must be connected to RX/TX+ on the other boards; the same is true for RX/TX-.
The following figure shows a diagram of a number of boards connected in a pLAN network and powered by the same transformer, typical for a number of
boards connected inside the same electrical panel. see figg. 6. av, 6.aw, 6.ax for
the ground connection of
the shield
AWG 20/22 AWG 20/22 AWG 20/22

C1
NO1
NO2
NO3
C1
C4
C1
NO1
NO2
NO3
C1
C4
RX-/TX+
RX+/TX-
C1
NO1
NO2
NO3
C1
C4
GND
J12 J12 J12
J11 pLAN J25 BMS2 J26 FBus2 J11 pLAN J25 BMS2 J26 FBus2 J11 pLAN J25 BMS2 J26 FBus2
J9 J10 J9 J10 J9 J10
input: 24 V / ; 50 to 60 Hz input: 24 V / ; 50 to 60 Hz input: 24 V / ; 50 to 60 Hz

max. power: 45 VA/17 W max. power: 45 VA/17 W
FieldBus card FieldBus card FieldBus card
J1 J24 J2 J3 J4 J1 J24 J2 J3 J4 J1 J24 J2 J3 J4

+5 VREF
+5 VREF
+5 VREF
+Vterm
+Vterm
+Vterm
+VDC
+VDC
+VDC
GND
GND
GND
GND
VG0
VG0
GND
GND
VG0
BC4
BC5
BC4
BC5
BC4
BC5
VG
VG
G0
G0
Y1
Y2
VG
Y1
Y2
B4
B5
B1
B2
B3
G0
B4
B5
B1
B2
B3
Y1
Y2
B4
B5
B1
B2
B3
G
G
G0
G0
G0
G
Fig. 5.aa
The following figure shows a diagram of a number of boards connected in a pLAN network and powered by different transformers (with G0 not earthed),
typical of a number of boards inside different electrical panels. see figg. 6. av, 6.aw, 6.ax for
the shield
AWG 20/22 AWG 20/22 AWG 20/22

C1
NO1
NO2
NO3
C1
C4
C1
NO1
NO2
NO3
C1
C4
RX-/TX+
RX+/TX-
RX-/TX+
RX+/TX-
C1
NO1
NO2
NO3
C1
C4
GND
GND
J12 J12 J12

J9 J10 J9 J10 J9 J10


+5 VREF
+5 VREF
+5 VREF
+Vterm
+Vterm
+Vterm
+VDC
+VDC
+VDC
GND
GND
GND
GND
VG0
VG0
GND
GND
VG0
BC4
BC5
BC4
BC5
BC4
BC5
VG
VG
G0
G0
Y1
Y2
VG
Y1
Y2
B4
B5
B1
B2
B3
G0
B4
B5
B1
B2
B3
Y1
Y2
B4
B5
B1
B2
B3
G
G
G0
G0
G0
G
Fig. 5.ab
“pCO5” +0300009EN rel. 1.0 - 13.11.2011 41
ENG
The following figure shows a diagram of a number of boards connected
in a pLAN network and powered by different transformers with the same see figg. 6. av, 6.aw, 6.ax for
earth; this is a typical application for a number of boards inside different
electrical panels.
the shield
AWG 20/22 AWG 20/22 AWG 20/22
C1
NO1
NO2
NO3
C1
C4
C1
NO1
NO2
NO3
C1
C4
RX-/TX+
RX+/TX-
RX-/TX+
RX+/TX-
C1
NO1
NO2
NO3
C1
C4
GND
GND
J12 J12 J12
J9 J10 J9 J10 J9 J10

+5 VREF
+5 VREF
+5 VREF
+Vterm
+Vterm
+Vterm
+VDC
+VDC
+VDC
GND
GND
GND
GND
VG0
VG0
GND
GND
VG0
BC4
BC5
BC4
BC5
BC4
BC5
VG
VG
G0
G0
Y1
Y2
VG
Y1
Y2
B4
B5
B1
B2
B3
G0
B4
B5
B1
B2
B3
Y1
Y2
B4
B5
B1
B2
B3
G
G
G0
G0
G0
G
G
Fig. 5.ac
5.5 Remote terminal with pLAN network 200 m
When pCO boards are connected in a pLAN network, the terminal can be
remotely-installed at a distance of up to 50 metres, if using a telephone Cavo schermato
cable, while it can be located at a distance of up to 500 metres if using a AWG20/22
2 twisted pair
shielded twisted pair, TCONN6J000 and a separate power supply.
Note: to reach the maximum length use a bus layout with branches not
exceeding 5 m. 6 5 4 3 2 1 0 6 5 4 3 2 1 0
S90CONN
The figures below show the connection diagrams for the various
configurations.
If the terminal is used in residential environments the cable always must
0,8 m
S90CONN002
be shielded.
The maximum distance between pCO and user terminal is shown in the
following table:
C9
NO9
NO10
NO11
C9
NO12
C12
NC12
NO13
C13
NC13
C1
NO1
NO2
NO3
C1
C4
NO4
NO5
NO6
C4
C7
NO7
C7
NO8
C8
NC8
J15 J16 J17 J18
J12 J13 J14
type of cable power supply power supply
NO14
C14
NC14
NO15
C15
NC15
C16
NO16
NO17
NO18
C16
J9 J10 J21 J22 J23 FBus2
distance Graphic
telephone 10 m taken from pCO (150 mA) menu I/O
on/offalarm
set
enter
prog.
input: 24 V 50...60 Hz / 28...36 V

Fie ldBus c ard B M S c ard
J19 J20
ID15H
ID16H
?
IDC15
IDC17
BC10
ID15
ID16
ID18
ID17
BC9
B10
B9
Y5
Y6
info
AWG24 shielded cable 200 m taken from pCO (150 mA) J1 J24 J2 J3 J4 J5 J7
+5 VREF
+Vterm
J6
ID13H
ID14H
+VDC
IDC13
GND
GND
IDC1
GND
IDC9
VG0
ID10
ID11
ID12
ID13
ID14
BC4
BC5
ID1
ID2
ID3
ID4
ID5
ID6
ID7
ID8
VG
ID9
G0
Y1
Y2
Y3
Y4
B1
B2
B3
B4
B5
B6
B7
B8
G
J8
AWG20/22 shielded 500 m separate power supply via

cable TCONN6J000
Tab. 5.a Fig. 5.ae
The maximum distance between two pCO boards with AWG20/22 TCONN cable connection
shielded cable is 500 m.
Important: do not reverse the GND and +Vdc wires
Graphic
menu I/O set prog.
?
info
on/off alarm enter
6 5 4 3 2 1 0
FDYRWHOHIRQLFR + - TX TX - +
WHOHSKRQHFDEOH RX RX
PD[P
+ -
Fig. 5.af
RX-/TX+
RX+/TX-
GND
service card
The figure below represents the TCONN6J000 shunt, used in pairs for
J9 J10
remote installation of the pCO in pLAN network with AWG20/22 shielded
cable.
Fig. 5.ad
42 “pCO5” +0300009EN rel. 1.0 - 13.11.2011
ENG
AWG20/22 cable (with power supply)
6 5 4 3 2 1 0
Fig. 5.ag
Terminal Function Cable connections

0 Earth Shield
1 +VRL (H30 Vdc) First pair A
2 GND Second pair A
3 Rx/Tx- Third pair A
4 Rx/Tx+ Third pair B
5 GND Second pair B
6 +VRL (H30 Vdc) First pair B
Tab. 5.b
Remote terminal installation up to 500 m with pLAN

network with AWG20/22 shielded cable
TRemote installation is shown in Fig. 5.u. This requires separate power
supply via TCONN6J000.
pLAN - to pCO
+ alimentatore
power supply
AWG20/22 -
1 twisted pair 20...30 Vdc -150 mA
6 5 4 3 2 1 0
Graphic
menu I/O set prog.
J14 and J15 on 2-3 ?

info
on/offalarm enter
only TCONN6J000
Fig. 5.ah
Important: the overall length of the network must not exceed the
500 m. Consequently if the terminal is installed remotely the terminal
cable length must be included in the total length.
Important: the terminal cable represents a branch of the network,

therefore if it’s more than 5 m long it can only be connected to the first or
last pCO in the network.
5.6 pLAN network technical specifications

The pLAN network technical specifications are summarised in the
following table:
description specification
Communication standard Asynchronous HALF DUPLEX RS485
Baud rate (kbit/s) 62.5 or 115.2 (select. via software)
Protocol Multimaster (CAREL proprietary
protocol)
Maximum network length (m) 500
Tab. 5.c
“pCO5” +0300009EN rel. 1.0 - 13.11.2011 43

ENG
6. PCO5 SERIAL CONNECTIONS
6.1 pCO5 serial connections: differences
compared to pCO3
Compared to the pCO3, pCO5 boards have a second serial port
(BMS2) on connector J25 and a second FieldBus port on connector
J26 (FBus2). pCO5 Large and Extralarge boards still have connector J23
which is marked as FBus2 in the same way as connector J26. As regards
management from the 1Tool application, this is in fact the same serial
port and different addresses must be used for the devices connected
to both connectors, while from an electrical point of view the ports are
independent (an electrical fault on port J26 does not affect port J23).
C9
NO9
NO10
NO11
C9
NO12
C12
NC12
NO13
C13
NC13
C1
NO1
NO2
NO3
C1
C4
NO4
NO5
NO6
C4
C7
NO7
C7
NO8
C8
NC8
J15 J16 J17 J18
J12 J13 J14
NO14
C14
NC14
NO15
C15
NC15
C16
NO16
NO17
NO18
C16
J9 J10 J21 J22 J23 FBus2
only for large and

extralarge models
input: 24 V 50...60 Hz / 28...36 V

Fi e l d Bu s c ard BMS card
ID15H
ID16H
IDC15
IDC17
BC10
ID15
ID16
ID18
ID17
BC9
B10
B9
Y5
Y6
J1 J24 J2 J3 J4 J5 J7
+5 VREF
+Vterm
J6
ID13H
ID14H
IDC13
+VDC
GND
GND
IDC1
GND
IDC9
VG0
ID10
ID11
ID12
ID13
ID14
BC4
BC5
ID1
ID2
ID3
ID4
ID5
ID6
ID7
ID8
VG
ID9
G0
Y1
Y2
Y3
Y4
B4
B5
B1
B2
B3
B6
B7
B8
J8
G
Fig. 6.a
Serial Type/Connectors Features

Serial ZERO pLAN/J10, J11 • Integrated on main board
• HW driver: RS485 pLAN
• Not optically-isolated
• Connectors: Telephone jack + 3-pin plug-in p. 5.08
Serial ONE BMS 1 Serial card • Not integrated on main board
• HW driver: not present
• Can be used with all pCO family optional BMS cards
Serial TWO FieldBus 1 Serial • Not integrated on main board
card • HW driver: not present
• Can be used with all pCO family optional FieldBus cards
Serial THREE BMS 2 / J25 • Integrated on main board
• HW driver: RS485 Slave
• Not optically-isolated (available also the version Optically-isolated)
• 3-pin plug-in connector p. 5.08
Serial FOUR FieldBus 2 / J26 • Integrated on main board
(and J23 on Large • HW driver: RS485 Master
and Extralarge • Not optically-isolated
version) • 3-pin plug-in connector p. 5.08
• J23 and J26 are both managed by the same protocol as serial 4, with the advantage of being electrically independent.
Tab. 6.a
pCO5 serial connections

pCO5 features three types of serial connections: pLAN, FieldBus, BMS.
The RS485 Fieldbus serial port has Master hardware, while the RS485 BMS
serial port has Slave hardware. The protocols used on the RS485 Fieldbus
port are, due to the nature of the port, Master protocols (Carel Master or
Modbus RTU Master), even if in special cases Slave protocols can be used
(Carel Slave or Modbus RTU Slave), adopting the due measures. Similarly,
Slave protocols are used on the RS485 BMS port, even if again adopting
the due measures Master protocols can be used.
44 “pCO5” +0300009EN rel. 1.0 - 13.11.2011

ENG
MASTER - SLAVE network
J11 pLAN J25 BMS2 J26FBus2 J11 pLAN J25 BMS2 J26FBus2 J11 pLAN J25 BMS2 J26FBus2
MASTER pCO5 SLAVE pCO5 SLAVE pCO5
PC
MASTER
J11 pLAN J25 BMS2 J26FBus2 J11 pLAN J25 BMS2 J26FBus2
SLAVE pCO5 SLAVE pCO5
pLAN network
J11 pLAN J25 BMS2 J26FBus2 J11 pLAN J25 BMS2 J26FBus2 J11 pLAN J25 BMS2 J26FBus2
MASTER/SLAVE MASTER/SLAVE MASTER/SLAVE

pCO5 pCO5 pCO5
Fig. 6.b
Important warnings
• a serial port with Master hardware (FB) provides the network, via a
suitable impedance, the correct polarisation voltage required for
operation of all the connected devices: the master itself and its slaves;
• serial ports with Slave hardware (BMS), on the other hand, do not
feature polarisation voltage, hence it’s always recommended to
connect at least one device with Master hardware (FB) to the network
so that this is correctly polarised;
• however it’s not possible to connect more than two Master hardware
devices (FB) to the same network as the total polarisation impedance
of the network would be too low, and thus not able to supply the right
voltage for the RS485 network;
• it’s recommended to connect serial probes or other devices that are
wired to the electrical panel to serial TWO – FieldBus 1, so as to exploit
the disturbance filtering property of the optically-isolated card.
Connecting the devices

Use a twisted pair cable with shield.
Master HW Lmax(m) Wire/wire Resistance Max no. Baud rate
dev. capaci- on first and of slave (kbps)
tance last device devices
(pF/m) on bus
FBUS RS485 1000 < 90 120Ω 64 19200
PC 1000 < 90 120Ω 207 19200
pLAN 500 < 90 - 32 115200
Tab. 6.b
Note: for Master – Slave networks the max length allowed is 1000
m; the 120Ω 1/4W terminating resistors on the first and last device in
the network should be used when the length exceeds 100 m.
Special cases
• For networks made up only of devices with slave HW, a maximum of
207 devices can be connected. The max network length allowed is 100
m. DO NOT connect the 120Ω 1/4W terminating resistors on the first
and last device;
• for networks made up only of devices with master HW, a maximum 2
devices can be connected. The max network length allowed is 1000 m.
The 120Ω 1/4W terminating resistor on the first and last device in the
network is required if the length exceeds 100 m;
• connect the computer to a network with max 1 master device or max
207 slave devices.
“pCO5” +0300009EN rel. 1.0 - 13.11.2011 45

ENG
Devices that can be connected to the pCO5
Device serial serial one - BMS 1 serial two - FieldBus 1 serial three - serial four - USB Master
zero - BMS 2 FieldBus 2 (Host)
pLAN
(& J23 on L E XL)

PCO100MDM0
connector J11
connector J10
connector J25
connector J26
PCO1000WB0
PCO100MPB0
PCOS00HBB0
PCO100FD10
PCO1000BA0
PCOS00FD20
PCOS00HBF0
PCO100TLN0
PCOS00KXB0
PCO10000R0
PCO1004850
PCOS004850
PCO10000F0
Display terminal
PST terminal x
PLD terminal x
pCOT - pCOI terminal x
pGD0 - pGD1 terminal x
pGD2 - pGD3 terminal x
Aria terminal x
pCO in pLAN x
FCM series controllers x
EVD200 x
EVD evolution x x
CAREL Slave devices (tLAN) x
CAREL Slave devices (485) x x x x x

pCOexp 485 x x x x x
pCOexp tLAN x
μchiller2 expansion x
Hydronic fan coil and CANbus x x
PlantVisorPRO local x x x x x
PlantWatchPRO x x x x x
PC Gate x x x x x
WebGate x x x x x
GATEWAY**0 x x x x x
LON - Echelon FTT10 x
BACnet/MSTP (RS485) x
HTTP client x
BACnet/Ethernet x
BACnet/IP x
SNMP v1, SNMP v2C x
Modbus TCP/IP x
Modbus supervisor (RTU) x x x
Modbus Slave devices x x x x x

pCOexp Modbus x x x - x x
Power+ x x x - x x
BenShaw devices x x -
WinLoad local x x x x - x x
WinLoad remote, analogue x -
modem
PlantVisorPRO remote, analogue x - x
modem
WinLoad remote, GSM modem x -
PlantVisorPRO remote, GSM x - x
modem
Send and receive SMS x - x
Belimo devices - x
Serial printer x - x
Pendrive - x
Th-tune terminal x x
pGD Touch x
Tab. 6.d
46 “pCO5” +0300009EN rel. 1.0 - 13.11.2011

ENG
USB Slave Display Protocol active on pCO5

(Device) terminal
connector J9
x display terminal
PST terminal Incompatible with CAREL Master 5
Local terminal or pLAN

Local terminal or pLAN With local terminal the pGD* works in pCOT emulation mode
Local terminal or pLAN
pLAN
pLAN or CAREL Master or CAREL Can only be activated on one serial port. CAREL Master 5 expansions: incompatible with PST
Master 5 expansions terminal
CAREL Master or CAREL Master 5 Can only be activated on one serial port. CAREL Master 5 expansions: incompatible with PST
expansions terminal. If the protocol is activated, other devices cannot be supervised on J23.
CAREL Master or CAREL Master 5 CAREL Master: can be activated either on BMS serial, FieldBus serial or pLAN.CAREL Master 5
expansions expansions: can be activated either on pLAN serial or FieldBus serial.
CAREL Master 5 expansions Can only be activated on one serial port; incompatible with PST terminal
CAREL Master Can only be activated on one serial port

CAREL SLAVE Can only be activated on one serial port at a time, except for BMS and Fieldbus, in which case
can be activated on both at the same time.If active on pLAN serial, the PSTN, GSM, Modbus Slave
and CAREL Slave protocols cannot be used on BMS serial.
Modbus Slave extended with Modbus slave extended only for pCOweb serial card with FW version ≥ 1.4
pCOweb
Modbus Slave If Modbus Slave is active then CAREL Slave can only be activated on a different serial port. The
second Modbus extended on BMS2 (with 10000 integer variables) can operate at the same time
as the one activated on the other port.
Modbus Master Can be activated on two serial ports at the same time, as long as these are different and with
separate management lists, selecting the second Modbus Master.
Modbus Master Benshaw Maximum of two Benshaw devices (addresses 1 and 2).
x WinLoad Can only be activated on one serial port; on FieldBus serial from Bios 4.00.
PSTN Can only be activated on one serial port
Incompatible with the PSTN protocol; if activated on the BMS serial port it’s incompatible with
Carel Slave set on pLAN serial port.
GSM Can only be activated on one serial port at a time.Incompatible with the PSTN protocol; if
activated on the BMS serial port it’s incompatible with Carel Slave set on pLAN serial port.
MP-Bus Maximum 8 devices

Serial printer Can only be activated on one serial port
Pendrive USB Master and USB slave port cannot be used at the same time
Mbus master for th - Tune Can be activated on pLAN or FieldBus serial, not on both at the same time
2nd Modbus slave extended on Version for 2048D (coil), 5000A, 10000l (15000 registers)
BMS2
“pCO5” +0300009EN rel. 1.0 - 13.11.2011 47

ENG
Devices that can be connected to the pCO5 compact
Device serial serial one - BMS 1 serial two - FieldBus 1 USB USB Protocol active on pCO5 compact
zero - Master Slave
pLAN (Host) (Device)
PCO100MDM0
PCO1000WB0
PCOS00HBB0
PCO1000BA0
PCOS00KXB0
connector J4
connector J5
connector J6
connector J7
connector J8
PCO10000R0
PCO1004850
PCOS004850
PCO10000F0
PST terminal x PST terminal
PLD terminal x PLD terminal
pCOT - pCOI terminal x Local terminal or pLAN
pGD0 - pGD1 terminal x Local terminal or pLAN
pGD2 - pGD3 terminal x Local terminal or pLAN
Aria terminal x pLAN
pCO in pLAN x
FCM series controllers x
EVD200 x
EVD evolution x x x pLAN or CAREL Master or CAREL
Master 5 expansions or Modbus
Master
CAREL Slave devices x CAREL Master or CAREL Master 5
(tLAN) expansions
CAREL Slave devices x x x x CAREL Master or CAREL Master 5
(485) expansions
pCOexp 485 x x x x
pCOexp tLAN x CAREL Master 5 expansions
μchiller2 expansion x
Hydronic fan coil and x x CAREL Master
CANbus
PlantVisorPRO local x x x x CAREL SLAVE
PlantWatchPRO x x x x
PC Gate x x x x
WebGate x x x x
GATEWAY**0 x x x x
LON - Echelon FTT10 x
BACnet/MSTP (RS485) x
HTTP client x CAREL Slave or Modbus Slave
BACnet/Ethernet x extended with pCOweb
BACnet/IP x
SNMP v1, SNMP v2C x
Modbus TCP/IP x
Modbus supervisor x x Modbus Slave
(RTU)
Modbus Slave devices x x x x Modbus Master
pCOexp Modbus x x x x
Power+ x x x - x
BenShaw devices x x - Modbus Master Benshaw
WinLoad local x x x x - x x WinLoad
WinLoad remote, x - PSTN
analogue modem
PlantVisorPRO remote, x - x
analogue modem
WinLoad remote, GSM x - GSM
modem
PlantVisorPRO remote, x -
GSM modem
Send and receive SMS x -
Serial printer x - Serial printer
Pendrive - x Pendrive
Th-tune terminal x x Mbus master for th - Tune
pGD Touch x x x Modbus slave
Tab. 6.c
48 “pCO5” +0300009EN rel. 1.0 - 13.11.2011

ENG
Application diagrams
Below is a series of diagrams illustrating which devices can be connected
to the pCO5 and the accessory cards required, according to the type of
application.
Air handling unit

PGD1* CP*: schede controllo
umidificatori KUE*
PGD Touch sonde seriali dispositivi

DP****4**** terze parti
FAN
With local terminal the pGD* works in pCOT emulation mode S90CONN*:
cavo di
collegamento
C9
NO9
NO10
NO11
C9
NO12
C12
NC12
NO13
C13
NC13
C1
NO1
NO2
NO3
C1
C4
NO4
NO5
NO6
C4
C7
NO7
C7
NO8
C8
NC8
J15 J16 J17 J18
J12 J13 J14
NO14
C14
NC14
NO15
C15
NC15
C16
NO16
NO17
NO18
C16
J9 J10 J21 J22 J23 FBus2
input: 24 V 50...60 Hz / 28...36 V

ID15H
ID16H
IDC15
IDC17
BC10
ID15
ID16
ID18
ID17
BC9
B10
B9
Y5
Y6
J1 J24 J2 J3 J4 J5 J7
CAREL Master: can be activated either on BMS serial, FieldBus serial or
+5 VREF
+Vterm
J6
ID13H
ID14H
+VDC
IDC13
GND
GND
IDC1
GND
VG0
IDC9
ID10
ID11
ID12
ID13
ID14
BC4
BC5
ID1
ID2
ID3
ID4
ID5
ID6
ID7
ID8
VG
ID9
G0
Y1
Y2
Y3
Y4
B4
B5
B1
B2
B3
B6
B7
B8
J8
G
pLAN. CAREL Master 5 expansions: can be activated either on pLAN serial or
FieldBus serial.
Can only be activated on one serial port; incompatible with PST terminal PCO100MPB0: PCOS004850:
scheda MP-BUS scheda seriale RS485
Can only be activated on one serial port
03%86 BACnet
™ MS/TP
st at u s RS4 8 5
PCO1000BA0: scheda interfaccia

Can only be activated on one serial port at a time, except for BMS and GNX
P1
+
P2
–
P3
RS485
BACnet™ RS485
Fieldbus, in which case can be activated on both at the same time.If active %(/,02 %(/,02
on pLAN serial, the PSTN, GSM, Modbus Slave and CAREL Slave protocols PCO1000WB0:
pCO Web - sch. interfaccia
cannot be used on BMS serial. Valvola di Servocontrollo
Ethernet™/BACnet™
servocontrollo della serranda
PCO10000F0:
schede LON
Modbus slave extended only for pCOweb serial card with FW version ≥ 1.4
Fig. 6.c
If Modbus Slave is active then CAREL Slave can only be activated on a Roof-top unit
different serial port. Use the pCO5 medium with built-in electronic valve driver..
Can be activated on two serial ports at the same time, as long as these
PGD1* CP*: schede controllo
are different and with separate management lists, selecting the second umidificatori KUE*
Modbus Master. EEV
PGD Touch sonde seriali
DP****4****
Maximum of two Benshaw devices (addresses 1 and 2).
Can only be activated on one serial port; on FieldBus serial from Bios 4.00.
S90CONN*:
Incompatible with the PSTN protocol; if activated on the BMS serial port it’s cavo di
incompatible with Carel Slave set on pLAN serial port. collegamento
Can only be activated on one serial port at a time.Incompatible with the
PSTN protocol; if activated on the BMS serial port it’s incompatible with
C9
NO9
NO10
NO11
C9
NO12
C12
NC12
NO13
C13
NC13
C1
NO1
NO2
NO3
C1
C4
NO4
NO5
NO6
C4
C7
NO7
C7
NO8
C8
NC8
J15 J16 J17 J18

J12 J13 J14
Carel Slave set on pLAN serial port.

1
3
2
4
J127
J9 J10

USB Master and USB slave port not cannot be used at the same time
Can be activated on pLAN or FieldBus serial, not on both at the same time input: 24 V 50...60 Hz / 28...36 V
J30 J29
VBAT
VREF
GND

DI1
DI2
S1
S2
S3
G0
S4
G
J1 J24 J2 J3 J4 J5 J6 J7 J8
+5 VREF
+Vterm
ID13H
ID14H
IDC13
+VDC
GND
GND
IDC1
GND
IDC9
VG0
ID10
ID11
ID12
ID13
ID14
BC4
BC5
ID1
ID2
ID3
ID4
ID5
ID6
ID7
ID8
VG
ID9
G0
Y1
Y2
Y3
Y4
B4
B5
B1
B2
B3
B6
B7
B8
G
PCO100MPB0: PCOS004850:
scheda MP-BUS scheda seriale RS485
03%86 BACnet
™ MS/TP
st at u s RS4 8 5
GNX
P1
+
P2
–
P3
RS485
BACnet™ RS485
%(/,02 %(/,02
PCO1000WB0:
Valvola di Servocontrollo
servocontrollo della serranda
PCO10000F0:
schede LON
Fig. 6.d
“pCO5” +0300009EN rel. 1.0 - 13.11.2011 49

ENG
Chiller - screw compressor
To manage two refrigerant circuits, there are two options.
Case 1: 2 pCO5 Medium controllers with built-in electronic expansion
valve driver.
dispositivi dispositivi dispositivi
PGD1* PGD Touch terze parti terze parti terze parti PGD1*
EEV EEV
FAN INVERTER PUMP
S90CONN*:
cavo di collegamento
C9
NO9
NO10
NO11
C9
NO12
C12
NC12
NO13
C13
NC13
C1
NO1
NO2
NO3
C1
C4
NO4
NO5
NO6
C4
C7
NO7
C7
NO8
C8
NC8
C9
NO9
NO10
NO11
C9
NO12
C12
NC12
NO13
C13
NC13
C1
NO1
NO2
NO3
C1
C4
NO4
NO5
NO6
C4
C7
NO7
C7
NO8
C8
NC8
J15 J18 J15 J16 J17 J18

J12 J13 J14 J16 J17 J12 J13 J14
J11 pLAN J25 BMS2 J26 FBus2 J11 pLAN J25 BMS2 J26 FBus2
3
2
4
3
2
4
J127 J28
J9 J10 J9 J10
input: 24 V 50...60 Hz / 28...36 V

input: 24 V 50...60 Hz / 28...36 V
J30 J29
VBAT
VREF
GND
max. power: 45 VA/20 W FieldBus card B M S card
DI1
DI2
S1
S2
S3
G0
S4
G
J1 J24 J2 J3 J4 J5 J6 J7 J8 J1 J24 J2 J3 J4 J5 J6 J7 J8
+5 VREF
+Vterm
+5 VREF
+Vterm
ID13H
ID14H
IDC13
+VDC
GND
GND
IDC1
GND
IDC9
ID13H
ID14H
VG0
IDC13
+VDC
ID10
ID11
ID12
ID13
ID14
BC4
BC5
GND
GND
IDC1
GND
ID1
ID2
ID3
ID4
ID5
ID6
ID7
ID8
IDC9
VG0
VG
ID9
G0
ID10
ID11
ID12
ID13
ID14
Y1
Y2
Y3
Y4
BC4
BC5
B4
B5
B1
B2
B3
B6
B7
B8
ID1
ID2
ID3
ID4
ID5
ID6
ID7
ID8
VG
ID9
G0
G
Y1
Y2
Y3
Y4
B4
B5
B1
B2
B3
B6
B7
B8
G
BACnet
™ MS/TP
st at u s RS4 8 5
BACnet
™ MS/TP
st at u s RS4 8 5
P1 P2 P3
P1 P2 P3 GNX + – RS485
GNX + – RS485
PCO1000WB0: PCO1000WB0:
PCOS004850: PCO1000BA0:scheda interfaccia pCO Web - sch. interfaccia PCO10000F0: PCOS004850: PCO1000BA0:scheda interfaccia pCO Web - sch. interfaccia PCO10000F0:
scheda seriale RS485 BACnet™ RS485 Ethernet™/BACnet™ schede LON scheda seriale RS485 BACnet™ RS485 Ethernet™/BACnet™ schede LON
Fig. 6.e
Case 2: 1 pCO5 Large with external EVD Evolution twin driver.
EVD*T*
EVD Evolution twin EEV dispositivi terze parti
PGD Touch
FAN INVERTER PUMP
S90CONN*: EEV
cavo di
collegamento
C9
NO9
NO10
NO11
C9
NO12
C12
NC12
NO13
C13
NC13
C1
NO1
NO2
NO3
C1
C4
NO4
NO5
NO6
C4
C7
NO7
C7
NO8
C8
NC8
J15 J16 J17 J18

J12 J13 J14
NO14
C14
NC14
NO15
C15
NC15
C16
NO16
NO17
NO18
C16
J9 J10 J21 J22 J23 FBus2
input: 24 V 50...60 Hz / 28...36 V

ID15H
ID16H
IDC15
IDC17
BC10
ID15
ID16
ID18
ID17
BC9
B10
B9
Y5
Y6
J1 J24 J2 J3 J4 J5 J7
+5 VREF
+Vterm
J6
ID13H
ID14H
+VDC
IDC13
GND
GND
IDC1
GND
VG0
IDC9
ID10
ID11
ID12
ID13
ID14
BC4
BC5
ID1
ID2
ID3
ID4
ID5
ID6
ID7
ID8
VG
ID9
G0
Y1
Y2
Y3
Y4
B4
B5
B1
B2
B3
B6
B7
B8
J8
G
PCOS004850:
scheda seriale RS485
BACnet
™ MS/TP
st at u s RS4 8 5
GNX
P1
+
P2
–
P3
RS485
BACnet™ RS485
PCO1000WB0:
PCO10000F0:
schede LON
Fig. 6.f
50 “pCO5” +0300009EN rel. 1.0 - 13.11.2011

ENG
Chiller - scroll compressor Close control unit (CCU)
PGD1*
PGD1* Power + PSD0*
schede CP*: controllo
umidificatori KUE*
EEV EEV
PGD Touch dispositivi terze parti PGD Touch dispositivi
terze parti
FAN
FAN INVERTER PUMP
S90CONN*:
cavo di
S90CONN*: collegamento
cavo di
collegamento
C9
NO9
NO10
NO11
C9
NO12
C12
NC12
NO13
C13
NC13
C1
NO1
NO2
NO3
C1
C4
NO4
NO5
NO6
C4
C7
NO7
C7
NO8
C8
NC8
J15 J16 J17 J18
J12 J13 J14
C9
NO9
NO10
NO11
C9
NO12
C12
NC12
NO13
C13
NC13
C1
NO1
NO2
NO3
C1
C4
NO4
NO5
NO6
C4
C7
NO7
C7
NO8
C8
NC8
3
2
4
J15 J16 J17 J18 J127
J12 J13 J14 J9 J10
3
2
4
J127
J9 J10
input: 24 V 50...60 Hz / 28...36 V

J30 J29
VBAT
VREF
GND
DI1
DI2
S1
S2
S3
G0
S4
G
input: 24 V 50...60 Hz / 28...36 V
J30 J29 J1 J24 J2 J3 J4 J5 J6 J7 J8
+5 VREF
+Vterm
VBAT
VREF
GND
ID13H
ID14H
IDC13
+VDC
GND
GND
IDC1
DI1
DI2
GND
IDC9
VG0
ID10
ID11
ID12
ID13
ID14
BC4
BC5
S1
S2
S3
G0
S4
ID1
ID2
ID3
ID4
ID5
ID6
ID7
ID8
VG
ID9
G
G0
Y1
Y2
Y3
Y4
B4
B5
B1
B2
B3
B6
B7
B8
G
J1 J24 J2 J3 J4 J5 J6 J7 J8
+5 VREF
+Vterm
ID13H
ID14H
IDC13
+VDC
GND
GND
IDC1
GND
IDC9
VG0
ID10
ID11
ID12
ID13
ID14
BC4
BC5
ID1
ID2
ID3
ID4
ID5
ID6
ID7
ID8
VG
ID9
G0
Y1
Y2
Y3
Y4
B4
B5
B1
B2
B3
B6
B7
B8
G
PCOS004850:
PCOS004850:
scheda seriale RS485 st at u s
BACnet
™ MS/TP
RS4 8 5
GNX
P1
+
P2
–
P3
RS485
BACnet™ RS485
BACnet
™ MS/TP
st at u s RS4 8 5
GNX
P1
+
P2
–
P3
RS485
BACnet™ RS485 PCO1000WB0:
PCO1000WB0:
Ethernet™/BACnet™ PCO10000F0:
schede LON
PCO10000F0:
schede LON
Fig. 6.g Fig. 6.i
Heat pump
PGD1* Power +
PSD0*
EEV
PGD Touch
S90CONN*:
cavo di
collegamento
C9
NO9
NO10
NO11
C9
NO12
C12
NC12
NO13
C13
NC13
C1
NO1
NO2
NO3
C1
C4
NO4
NO5
NO6
C4
C7
NO7
C7
NO8
C8
NC8
J15 J16 J17 J18

J12 J13 J14
1
3
2
4
J127
J9 J10
input: 24 V 50...60 Hz / 28...36 V

J30 J29
VBAT
VREF
GND

DI1
DI2
S1
S2
S3
G0
S4
G
J1 J24 J2 J3 J4 J5 J6 J7 J8
+5 VREF
+Vterm
ID13H
ID14H
IDC13
+VDC
GND
GND
IDC1
GND
IDC9
VG0
ID10
ID11
ID12
ID13
ID14
BC4
BC5
ID1
ID2
ID3
ID4
ID5
ID6
ID7
ID8
VG
ID9
G0
Y1
Y2
Y3
Y4
B4
B5
B1
B2
B3
B6
B7
B8
G
PCO100FD10:
PCOS004850:
scheda seriale
FieldBus
BACnet
™ MS/TP
st at u s RS4 8 5
GNX
P1
+
P2
–
P3
RS485
BACnet™ RS485
PCO1000WB0:
sonde seriali th Tune pCO Web - sch. interfaccia
DP****4**** AT* Ethernet™/BACnet™
PCO10000F0:
schede LON
Fig. 6.h
“pCO5” +0300009EN rel. 1.0 - 13.11.2011 51

ENG
Electrical connections in the serial network
To improve immunity of the pCO programmable controller to
electromagnetic disturbance, the serial connection cable must be a
twisted two- or three-wire cable with shield, depending on the insulation
of the serial connection. The following rule applies: if the serial port is
insulated (functionally) from the power supply, a third wire is required
in the serial cable to act as a common reference for the controllers. If the
serial port is not optically-isolated and the common reference is already
present, the third wire is not needed.
Not optically-isolated serial port

This is the case of serial zero - pLAN (J11), FieldBus 2 (J23 and J26) and
BMS2 if not optically-isolated.
Case 1: multiple boards connected to the master/slave network powered
by the same transformer; this is a typical application of multiple boards
connected inside the same electrical panel. The terminating resistor is not
used (L<100 m). see figg. 6. av, 6.aw, 6.ax for
the shield
AWG 20/22 AWG 20/22 AWG 20/22
C1
NO1
NO2
NO3
C1
C4
C1
NO1
NO2
NO3
C1
C4
RX-/TX+
RX+/TX-
C1
NO1
NO2
NO3
C1
C4
GND
J12 J12 J12
J9 J10 J9 J10 J9 J10


+5 VREF
+5 VREF
+5 VREF
+Vterm
+Vterm
+Vterm
+VDC
+VDC
+VDC
GND
GND
GND
GND
VG0
VG0
GND
GND
VG0
BC4
BC5
BC4
BC5
BC4
BC5
VG
VG
G0
G0
Y1
Y2
VG
Y1
Y2
B4
B5
B1
B2
B3
G0
B4
B5
B1
B2
B3
Y1
Y2
B4
B5
B1
B2
B3
G
G
G0
G0
G0
G
Fig. 6.j
Case 2: multiple boards connected to the master/slave network powered
by different transformers (with G0 not earthed); this is a typical application
of multiple boards inside different electrical panels. If the length of the see figg. 6. av, 6.aw, 6.ax for
network exceeds 100 m the 120 Ω ¼ W terminating resistor is required the ground connection of
.
the shield
AWG 20/22
R= 120 ohm
AWG 20/22 AWG 20/22
R= 120 ohm
C1
NO1
NO2
NO3
C1
C4
C1
NO1
NO2
NO3
C1
C4
RX-/TX+
RX+/TX-
RX-/TX+
RX+/TX-
C1
NO1
NO2
NO3
C1
C4
GND
GND
J12 J12 J12

J9 J10 J9 J10 J9 J10


+5 VREF
+5 VREF
+5 VREF
+Vterm
+Vterm
+Vterm
+VDC
+VDC
+VDC
GND
GND
GND
GND
VG0
VG0
GND
GND
VG0
BC4
BC5
BC4
BC5
BC4
BC5
VG
VG
G0
G0
Y1
Y2
VG
Y1
Y2
B4
B5
B1
B2
B3
G0
B4
B5
B1
B2
B3
Y1
Y2
B4
B5
B1
B2
B3
G
G
G0
G0
G0
G
Fig. 6.k
Case 3: multiple boards connected to the pLAN network powered by
different transformers with only one earth reference: this is a typical
application of multiple boards inside different electrical panels.
52 “pCO5” +0300009EN rel. 1.0 - 13.11.2011

ENG
AWG 20/22 AWG 20/22 AWG 20/22
C1
NO1
NO2
NO3
C1
C4
C1
NO1
NO2
NO3
C1
C4
RX-/TX+
RX+/TX-
RX-/TX+
RX+/TX-
C1
NO1
NO2
NO3
C1
C4
GND
GND
J12 J12 J12
J9 J10 J9 J10 J9 J10

+5 VREF
+5 VREF
+5 VREF
+Vterm
+Vterm
+Vterm
+VDC
+VDC
+VDC
GND
GND
GND
GND
VG0
VG0
GND
GND
VG0
BC4
BC5
BC4
BC5
BC4
BC5
VG
VG
G0
G0
Y1
Y2
VG
Y1
Y2
B4
B5
B1
B2
B3
G0
B4
B5
B1
B2
B3
Y1
Y2
B4
B5
B1
B2
B3
G
G
G0
G0
G0
G
G
see figg. 6. av, 6.aw, 6.ax for
the shield
Fig. 6.l
Optically-isolated serial port

This is the case of serial one – BMS1, serial two - FieldBus 1 and serial three
– BMS2, if optically-isolated.
Irrespective of the type of power supply, use a three-wire shielded cable, see figg. 6. av, 6.aw, 6.ax for
connected as shown in the figure. If the network is more than 100 m line, the ground connection of
the terminating resistor is required. the shield
AWG 20/22
R= 120 ohm
AWG 20/22 AWG 20/22
R= 120 ohm
C1
NO1
NO2
NO3
C1
C4
C1
NO1
NO2
NO3
C1
C4
RX-/TX+
RX+/TX-
RX-/TX+
RX+/TX-
C1
NO1
NO2
NO3
C1
C4
GND
GND
J12 J12 J12
J9 J10 J9 J10 J9 J10


+5 VREF
+5 VREF
+5 VREF
+Vterm
+Vterm
+Vterm
+VDC
+VDC
+VDC
GND
GND
GND
GND
VG0
VG0
GND
GND
VG0
BC4
BC5
BC4
BC5
BC4
BC5
VG
VG
G0
G0
Y1
Y2
VG
Y1
Y2
B4
B5
B1
B2
B3
G0
B4
B5
B1
B2
B3
Y1
Y2
B4
B5
B1
B2
B3
G
G
G0
G0
G0
G
power supply
Fig. 6.m
Procedure for earthing the shield

The shield of the serial cable is earthed in different ways, according to
the length, as shown in the figure (A = FBus terminal, B= BMS terminal,
or A=B in pLAN).
Case 1: distance between controllers less than 0.3 Case 2: distance between controllers greater than 0.3 m: two possibilities
m: earth just one end of the cable
X: earth one end with bridge between shields Y: earth both ends
L < 0.3 m L < 0.3 m L > 0.3 m L > 0.3 m L > 0.3 m L > 0.3 m
AWG 20/22 AWG 20/22 AWG 20/22 AWG 20/22 AWG 20/22 AWG 20/22
Fig. 6.al Fig. 6.am Fig. 6.an
pCO5 compact serial connections

The electrical and software details provided apply to both the pCO5
and pCO5 Compact, however remembering that pCO5 compact has just
one optional BMS port and an integrated Fieldbus port. Note that the
integrated FieldBus port on pCO5 compact is opto-isolated and therefore
provides better performance in terms of immunity compared to the port
on the pCO5
“pCO5” +0300009EN rel. 1.0 - 13.11.2011 53

ENG
7. UPDATES, FIRMWARE AND LOG FILES FOR PCO CONTROLLERS
IThe following systems can be used to update the firmware and acquire 7.2 USB port (on pCO5 and pCO5 compact
the log files on pCO controllers:
• Winload; models where featured)
• SmartKey. On specific models, pCO5 comes with two different USB ports (host and
slave), to be used during installation and diagnostics.
The host port can be used to connect USB mass storage peripherals
(pendrives, portable hard disks, … with a maximum current of 200 mA)
7.1 pCO Manager and then run a series of operations:
On all CAREL 16 bit pCO sistema controllers (see the pCO sistema manual) 1. upload to pCO5 the files on the removable peripheral: application,
the resident software can be updated using a PC. For this purpose, parameters in buffer memory, configuration files for logs, Bios.
CAREL provides the pCOLoad program and a serial converter with RS485 2. download files from pCO5 to the removable peripheral: application,
output to be connected to the pCO. The special driver also needs to be parameters in buffer memory, data log, BIOS.
installed on the PC, also provided by CAREL. The program is included in
the installation of the “1tool” program suite or with the pCO Manager
program, downloadable separately from http://ksa.carel.com, under Important: use the pendrive to perform the following operations:
“home: download: pCO sistema: pCO_manager”. • UPLOAD - copy files from pendrive to controller;
The installation, as well as the program, also includes the user manual. • DOWNLOAD - download files from controller to pendrive, available
The pCO controller can be connected directly to the PC via the RS485 only when using a terminal, either built-in or connected to the
serial port used for the “pLAN” connection or using the BMS serial port controller via pLAN.
with optional RS485 serial card used for the “supervisor” connection.
When using the BMS serial port and the optional RS232 serial card, the The pCO5 controller has 2 USB ports, A and B, accessible after having
pCO controller can be connected to an analogue (PSTN) or GSM modem removed the cover S, and two LEDs, L1 and L2.
and in turn to pCO Manager via a remote connection.
pCO Manager can communicate with all pCO family programmable A
controllers.
The program can also be used in general to update and download to the
PC the BOOT, BIOS, application, configuration and log files, including the
file saved in NAND flash memory. L1 L2 S
It must be underlined that updating the BOOT is generally NOT
recommended by CAREL; during production CAREL always loads the B
BOOT required for the correct operation of the unit. Only in very special
cases will CAREL ask the user to update the BOOT. Fig. 7.a
The BIOS can only be loaded via the pLAN serial connection. When Port A is used to connect a pendrive, port B for direct connection to a
updating the BIOS, the unit operating mode switches to low level. In this computer running the pCO Manager program. LED L1 comes on steady
special mode, the logged data cannot be downloaded to the PC nor can after connection and flashes during data transfer. The keypad has 6
the application be loaded in compressed format. To return the unit to buttons that, pressed either alone or in combination, are used to run
normal communication with pCO Manager, reset the pCO board after all the UPLOAD and DOWNLOAD operations between pendrive and
having successfully loaded the BIOS. controller.
For further information on the operation of pCO Manager see the online
help inside the program.
Esc
The download options are listed in the following tables:
Prg
LOCAL pLAN serial BMS serial FieldBus Alarm
serial Down
Load Boot and Bios YES NO NO Up
Load application and YES YES YES Enter
parameters
Load/download logs YES YES YES
Load/download NAND flash YES NO NO Fig. 7.b
(pCO3)
Tab. 7.a. Important:
• before using the pendrive, it must be formatted with the FAT32 system;
REMOTE pLAN serial BMS serial FieldBus • the pendrive can access up to two levels: APPL\CHILLER\PRI.BIN,
serial however cannot access the \APPL\CHILLER\VER1\PRI.BIN file;
Load Boot and Bios NO – modem NO NO • do not use port A and port B at the same time;
can’t be
• the maximum pendrive capacity supported is 32 GB
connected
Load application and NO – modem YES NO
parameters can’t be
connected Manual, automatic and autorun mode
Load/download logs NO – modem YES NO • Manual mode involves selecting the operations to be performed via
can’t be the keypad; this offers maximum flexibility and the possibility to freely
connected decide the desired operations;
Load/download NAND flash NO NO NO • Automatic mode requires the creation of special files, called
(pCO3)
configuration files, which are text files (.txt extension) containing
Tab. 7.b.
various types of information on the functions to be performed and the
All the WinLoad32 program functions are also available in pCO Manager, files to be loaded;
which also includes the Commissioning Tool. • Autorun mode the creation of a special configuration file called
“autorun.txt”. When the pendrive is plugged in the controller
immediately executes Autorun and after confirmation from the
terminal performs the operations contained in the file.
54 “pCO5” +0300009EN rel. 1.0 - 13.11.2011

ENG
Upload & Download FILE TYPES FOR DOWNLOAD (pLAN address control =1)
The UPLOAD operation can be performed in three different ways: File extension Directory name Description
1. manual mode: the user selects manual mode from the keypad, then .DWL LOG00_01 Logged data
the files to be loaded and then confirms to start the operation. .DWL,.DEV, .LCT, .PVT BKP00_01 Application
.DEV DEV00_01 Non-volatile parameters
2. automatically: the user selects automatic mode from the keypad .DWL, .DEV, .LCT, .PVT CPY00_01 All the data on the
and then the configuration files that contain the instructions on the controller
operations to be performed; Tab. 7.d
3. autorun mode: after plugging in the pendrive a screen is displayed The downloaded files also have fixed name, specifically the application file
indicating that autorun mode has started. After confirming, the is called “ppl–pCO.dwl”, the BIOS file “bios–pCO.bin”, the files containing
instructions contained in “autorun.txt” are executed automatically. the logs and related information are “logs.dwl”, “logs.lot” and “logs.pvt”
The contents of this file are similar to the UPLOAD configuration files, respectively. Finally, the buffer memory is saved to the file of the pendrive.
the only difference being the name “autorun.txt”.
Menu access
The DOWNLOAD operation can be performed in two different ways: The following operations are used to access the pendrive management
4. manual mode: the user selects manual mode, then the files to menu.
download and then confirms to start the operation.
5. autorun mode: after plugging in the pendrive a screen is displayed Procedure:
indicating that “autorun” mode has started. After confirming, the 1. Connect the pendrive to port A. The green LED on the controller
instructions contained in “autorun.txt” are executed automatically. comes on to confirm recognition.
The contents of this file are similar to the DOWNLOAD configuration
files, the only difference being the name “autorun.txt”.
Note: the configuration and autorun files must reside in the main USB key
directory.
File extensions, names and contents

BC5
Different types of files can be uploaded and downloaded and are
distinguished by their extension.
Fig. 7.c
Nomi di file
In order to be recognised, the names of the directories and files on
the pendrive must have at most 8 characters; the controller does not 2. Press Alarm and Enter together for 3 seconds to enter the option
recognise the difference between characters in upper and lower case. menu. Select FLASH/USB memory and confirm by pressing Enter.
On the other hand, during DOWNLOAD the directories created by the
controller on the pendrive only have names in upper case. > SYSTEM INFORMATION
LOG DATA
FILE TYPES FOR UPLOAD OTHER INFORMATION
FLASH/USB MEMORY
File extension Description
.IUP Contains the definitions of the screens on the terminal
.BLB Contains the application
.BIN Contains the application (with pLAN table) Fig. 7.d
.BLX Contains the logic of user-defined atoms in C
language
.GRP Contains the graphics 3. Select USB pen drive and confirm by pressing Enter
.DEV Contains the preset configuration parameter values
.PVT, .LCT Contains the descriptions of the public variables to
be saved. Generated by 1tool, this is used by the NAND FLASH FILES
> USB PEN DRIVE
LogEditor module and must be loaded together with
the .LCT file
Tab. 7.c
Downloaded files are saved in directories created automatically, with the Fig. 7.e
following type of name:
NAMXY_WZ
Important: wait at least 25 seconds after the pendrive has been
Where:
plugged in for it to be recognised by the controller. If the message: “No
NAM: identifier of the type of data downloaded (LOG for logs, BKP for
USB disk or PC connected“ is displayed momentarily with the request to
the application, DEV for the buffer memory, CPY for all the data from the
connect a pendrive key or computer USB cable, wait a few seconds until
controller).
correct recognition message is shown: “USB disk found” and then the
XY: progressive number from 0 to 99
following screen opens:
WZ: controller pLAN address.
E.g.: the LOG00_01 directory contains the logs (LOG) downloaded from
4. Select the UPLOAD operation
a device with pLAN address 1. The pendrive, before the download
operation, did not contain any directories of this type and is consequently
numbered 00. Select function:
>UPLOAD (pen->pCO)
DOWNLOAD (pCO->pen)
Important: no more than 100 files of the same type can be

downloaded to the pendrive, as the directories created can be numbered
XY=00 to 99. Fig. 7.f
“pCO5” +0300009EN rel. 1.0 - 13.11.2011 55

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Upload
An application plus BIOS or buffer memory (parameters) can be uploaded Important:
from the pendrive. The following modes are available: automatic, • the order in which the file names are entered is fundamental and
autorun and manual. Automatic and autorun modes require the use of cannot be changed;
configuration files. • do not enter empty lines or spaces in the file (e.g. at the end of a line);
• each file after the last line of code must contain a “carriage return”
Configuration file structure character (CR ), as shown in the following example.
The configuration files must start with the string “[FUNCTION]” followed
by a string that identifies the function, as shown in the table. Example: the following file will upload the BIOS and an application.
Function String [FUNCTION] 

UPLOAD an application, or a BIOS file and of Upload application Upload application 
an application 
UPLOAD non-volatile memory (.dev) Upload non volatile memory [DIR] 
UPLOAD the entire contents of the pCO Copy pCO upload NEW_AHU 
Tab. 7.e

[NAM] 
Following the description of the desired function, various options are BIOS+APPL+LOGSv58B36 
available: 
1. to copy the complete contents of the directory, simply write the name [BIO] 
of the directory (e.g. the entire contents of the CHILLER directory); biosn509.bin 
[FUNCTION] 
Upload non volatile memory [IUP] 
AHU_EN.iup 
[DIR] AHU_IT.iup 
CHILLER 
Fig. 7.g [BIN] 
AHU.blb 
2. to copy just 1 file in a directory, specify the name (e.g. the CHILLER. 
DEV file in the CHILLER directory); [DEV] 
[FUNCTION] AHU.dev 
Upload non volatile memory 
[GRP] 
[DIR] AHU.grp 
CHILLER 
[PVT] 
CHILLER.DEV AHU.pvt 

Fig. 7.h [LCT] 
AHU.lct 
To show a string on the display describing the operation being
Fig. 7.j
performed, add the “[NAM]” instruction, followed by the string displayed.
The following file will display the string:
Automatic upload
“UPL CHILLER.DEV” To automatically upload the parameter memory using the first
[FUNCTION] configuration file shown in the previous paragraph, access the system
Upload non volatile memory menu as already described and proceed as follows:
[DIR] 1. Select automatic mode. A screen is shown describing the use of the
CHILLER buttons, press Enter to confirm.
pCO
[NAM] Select upload mode:
UPL CHILLER.DEV >AUTOMATIC MODE
MANUAL MODE
CHILLER.DEV
Fig. 7.i Fig. 7.k
3. to select just some of the files in the same directory, list them after 2. Confirm by selecting Prg. A screen is displayed requesting
a label. The following labels are allowed and must be entered in the confirmation to Upload the non-volatile memory. Press Enter to
order shown in the table: confirm.
Note: the [IUP] label can be followed by one or more “.iup” files. pCO
>UPL FILE_DEV.DEV
UPLOAD file labels
no. label file type no. label file type
1 [BIO] (*) file.bin 6 [PVT] file.pvt
2 [IUP] file.iup 7 [LCT] file.lct
Fig. 7.l
3 [BIN] file.bin, blb 8 [OED] file.oed
4 [DEV] file.dev 9 [SGN] file.sgn 3. At the end a message asks the user to remove the pendrive.
5 [GRP] file.grp pCO
(*) BIO = file di BIOS
Tab. 7.f UPLOADING FILE
PLEASE WAIT...
Note: to get the .bin file from the BIOS in the format available on http://
ksa.carel.com (.os file), the latter file needs to be unzipped.
56 “pCO5” +0300009EN rel. 1.0 - 13.11.2011 Fig. 7.m
ENG
Upload in autorun mode pGD
Upload in autorun mode is a special version of automatic upload. Unlike NO LINK
automatic mode, the user needs to wait for a specific message to be
shown on the display to start or disable the operation described in the
configuration file. To upload a file in autorun mode, a configuration file
needs to be created and named “autorun.txt”.
Example of uploading BIOS+application. The upload operation involves
Fig. 7.t
two steps, first the BIOS is updated and then the application.
The information is shown on the pCO built-in display and the pGD1
6. The controller warns that no application has been loaded
terminal, when these are both featured.
Procedure: pCO
1. Connect the pendrive to port A. The green LED on the controller Application program
comes on to confirm recognition. corrupted or not
present!
WAITING for upgrade
Fig. 7.u
USB key
pGD
NO LINK
BC5
Fig. 7.v
Fig. 7.n
2. After around 25 s Autorun mode starts. Press Enter to confirm. 7. The application update then starts
pCO pCO
****AUTORUN MODE**** Upload appl
UPLOAD APPLICATION Please wait...
Press ENTER to start
ESC to exit autorun
Fig. 7.o Fig. 7.w

pGD
3. Then the validity of the FW is checked and the BIOS is loaded
NO LINK
pCO
FW validation
Please wait...
Fig. 7.x
Fig. 7.p
8. Remove the pendrive. The update is complete. Wait for the display to
4. IThe display flashes to indicate that after loading the new BIOS the stop flashing, indicating the controller is being reset before restarting.
controller is being reset pCO
pCO
Upload complete
Remove USB key
Uploading BIOS file and wait reset
Please wait...
Fig. 7.y
Fig. 7.q pGD
pGD NO LINK
NO LINK
Fig. 7.z
Fig. 7.r
5. The test phase starts Important: as can be seen, when updating the BIOS and the
application, the pGD1 terminal shows the absence of a connection with
pCO
the message “NO LINK”. Consequently, do not remove the terminal and
################## wait for the end of the update procedure, when the pGD1 terminal
Selftest replicates the messages on the built-in display.
Please wait...
##################
Note: autorun run is especially useful in those cases in which the
Fig. 7.s same operation needs to be performed on several controllers. For
example, to load different applications on controllers connected in a
“pCO5” +0300009EN rel. 1.0 - 13.11.2011 57
ENG
pLAN network, only one autorun file needs to be created; this uploads Password setting
the different directories contained on the pendrive based on the address If the application contains a password that needs to be entered in a
of the controllers. The controller with address XY will only load the special screen, this is requested for each DOWNLOAD/UPLOAD operation
directory called: “dirname_XY”. The pendrive then only needs to be between the pCO and the pendrive. The password is used to:
plugged in to each controller to run the upload, confirming from the • protect the contents of the pCO from being downloaded to the
shared terminal. pendrive;
• protect the PC connection (this is a standard procedure in pCO
Manager).
Manual upload
To manually upload the contents of the pendrive, the user must access
the management menu from the system screens, choosing the items Connecting to a computer
UPLOAD and then MANUAL shown in Figs. 6.b.k and 6.b.p. Connect the slave USB port on the controller to the USB port on the
The files are selected by pressing ENTER when the cursor is on the desired computer where the pCO manager program has been installed.
file. A selected file is marked by a “*” symbol on the left. Once the files have
been selected (all in the same directory), to start the upload operation
press PRG. To display the contents of a directory press ENTER. To go back
up one directory level, on the other hand, press ESC.
Once the upload has started, the messages shown on the screen are the
same as in automatic and autorun mode. USB connector
from computer
Download
BC5
As mentioned, the DOWNLOAD operation can be managed in two ways:
1. manual mode: follow the steps described in paragraph 1.4.1 and Fig. 7.ad
choose manual operation. Then each file must be selected and
downloaded;
Important:
2. autorun mode: prepare a file called “autorun.txt”, containing a string
• Do not install any type of converter between the computer and port B,
that identifies the function to be performed.
even if specified by the guided procedure in the program;
Function String • the pCO Manager program manages compressed files (.GRT/.OS)
DOWNLOAD logged data Download logs
DOWNLOAD the application Download application Once the connection has been made, the following operations are
DOWNLOAD non-volatile memory Download non volatile memory
available:
(.dev)
DOWNLOAD the entire contents of the Copy pCO download
1. UPLOAD the application or BIOS+application;
pCO 2. DOWNLOAD non-volatile memory;
Tab. 7.g 3. DOWNLOAD logged data;
4. Commissioning;
The result is the creation of files with the required extensions, in the 5. NAND flash memory management.
respective directories, as shown in the paragraph on “file names”. Once having removed the USB cable, the port is free again after around 5 s.
When the operation is complete, the display shows a message with the
name of the directory created. Important: if, after plugging in the USB cable, there is no
[FUNCTION] connection with the pCO Manager program, after removing the cable
Download application wait at least 1 minute before using the USB ports again.
Fig. 7.aa
7.3 Smartkey
The following screen will be displayed. The SMARTKEY programming key is used to program the pCO, with the
sole exception of the BOOT, which is not loaded by SMARTKEY. Specifically,
1. Press Enter to confirm
the key can clone the contents of one pCO and then download the data
to another identical pCO via the terminal telephone connector (the pLAN
****AUTORUN MODE**** must be disconnected). In addition to this mode, the key can be used to
DOWNLOAD APPLICATION transfer logged data from a series of pCO units and then download them
Press ENTER to start
ESC to exit autorun to a PC.
From the PC, using the “SMARTKEY PROGRAMMER”, the key can be
configured to run certain operations: retrieve logs, program applications,
Fig. 7.ab program BIOS, etc.
For further details see the online help for the “SMARTKEY PROGRAMMER”
2. Download complete and the SMARTKEY instruction sheet.
Operation complete
Data downloaded
to BKP00_01
Fig. 7.ac
Example: on the controller with address 1, the autorun file will create the
directory called BKP00_01, and copy the APPL_PCO.DWL and FILE_DEV.
DEV files to this directory.
58 “pCO5” +0300009EN rel. 1.0 - 13.11.2011

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7.4 NAND Flash memory The CRC is a number that summarises the application contained in
the flash memory on the pCO, but also other system information. It’s
This type of memory is only available on pCO5 versions with code
therefore recommended to recognise the version of a specific application
PCO5******C/D/F/G**.
on a special screen.
pCO Manager can be used to load any type of file to the NAND Flash
memory. This can be used, for example, to save the application source
2. LOG DATA: selecting this function allows any logged data on the pCO
files on the unit.
to be viewed. If no log is present, the following screen is displayed.
As well as this use, the IUP, BLB (or BIN) and DEV files that represent
parameter files, the screens displayed in the various languages and the 0
control logic, can be loaded to NAND flash and then selected from the N O L O G D A T A
P R E S S
screen on the terminal to be used as the current application on the [ M E N U ] O R [ E S C ]
pCO. Specifically, several different applications, or different languages,
or multiple parameter files can all be loaded s in NAND flash memory If, on the other hand, there is at least one log, the first screen displayed is
and then the desired application, language or parameter configuration similar to the following.
can be selected and loaded to the main flash memory. The files saved
in NAND flash memory can be selected and copied to the main flash 1 D I S P L A Y L O G D A T A
memory on the screen managed directly by the BIOS. The procedure is W h i c h m e m o r y ?
described in the following paragraph. I N T E R N A L M E M O R Y
Limits: Detailed information on the screens relating to the logs is provided in the
• a maximum of 40 files can be saved on NAND flash memory; WinLoad manual.
• the NAND flash memory can only be updated via the Winload local
connection; 3. OTHER INFORMATION: selecting this function displays the ID
• the maximum total memory capacity is 32 MBytes. number associated with the pCO. The ID number is a code, different
for each pCO manufactured by CAREL, and is available for use in
future applications.
I D N U M B E R :
0 0 2 6 3 1 1 4 4 1 - 1 8 0 8 2
7.5 Checking the software installed on the
pCO and other information
The current version of program can be checked at any time (by CRC code Not all pCO units are given an ID number by CAREL; if this is not available,
expressed in hexadecimal), and whether the program on the key or the the following screen is displayed.
resident program is used. To check this, simply proceed as follows. I D N U M B E R :
N O T P R E S E N T
Screens managed by BIOS

Press the ALARM and ENTER buttons together for 3 seconds, and the
following screen will be displayed. 4. NAND FLASH FILES: this line is displayed only on pCO boards that
feature additional NAND flash memory. Selecting this function
> S Y S T E M I N F O R M A T I O N displays the names of the IUP, BLB, GRP and DEV files saved in NAND
L O G D A T A memory; it’s also possible to copy an application from NAND memory
O T H E R I N F O R M A T I O N to the main flash memory on the pCO. Each file name is shown on a
N A N D F L A S H F I L E S screen such as the one below.
[ X ]
Each of the four lines displayed is used to access further screens, managed P G D 2 3 _ A L L . g r p
by BIOS and consequently always available, irrespective of the application
loaded. To access the functions, simply select the line with the cursor “<”
using the UP and DOWN buttons, and then confirm by pressing ENTER.
To exit the screen press MENU or Esc on the terminal, or wait around 40 To move from one file to another simply press the UP or DOWN button.
seconds for automatic timeout. Press ENTER to select the current file to copy to main flash memory. The
The screens provide various types of information. files selected to be copied are marked by an “X” on the first line of their
screen; in the example shown in the figure, the “PGD23_ALL.grp” file is
1. SYSTEM INFORMATION: selecting this function displays information selected to be copied. To start the copy procedure, press UP or DOWN
on the software loaded and the amount of RAM and Flash installed. until reaching the following screen:
The screen displayed is similar to the following.
P r e s s E n t e r
B O O T V 4 . 0 0 1 0 / 0 1 / 0 6 t o s t a r t c o p y i n g
B I O S V 4 . 0 0 0 3 / 0 2 / 0 6
> 2 + 2 M B <
A P P . C R C : 3 3 5 D 2 M B
and then confirm by pressing ENTER.
The first line displays the BOOT version and date. In the example shown in For further information on the use of NAND memory, see the WinLoad
the figure, the pCO is working with BOOT 4.00 of 10 January 2006. manual.
The second line displays the BIOS version and date. In the example shown
in the figure, the pCO is working with BIOS 4.00 of 3 February 2006. Exit these two screens by pressing Menu on the local terminal or wait
The third line indicates the size of the Flash onboard and, on the pCO1 around 40 seconds for automatic timeout.
and pCO2, the size of the Flash in the parallel key or the expansion card, if
featured. The “>” and “<” characters indicate the starting Flash on the pCO:
these are on the left if the pCO is started from the onboard Flash, and are
on the right if the pCO is started from the key. In the example the pCO
is running BOOT, BIOS and application onboard, and no key or memory
expansion is available.
The fourth line displays the application CRC and the amount of Flash
occupied. In the example, the application CRC is 335D and requires 2 MB
of memory. If this line shows 1 MB, a pCO with 1 MB Flash is sufficient.
“pCO5” +0300009EN rel. 1.0 - 13.11.2011 59
ENG
8. GENERAL CONNECTION DIAGRAMS
8.1 pCO5
2.5 AT

input: 24 V 50...60 Hz / 28...36 V
L
230/24 Vac
G G
J1
N G0
G0
J9
50VA
+Vterm +Vterm
J24
J10
GND GND
+5 VREF +5 VREF
probe 1 (0/5 V)
Rx-/Tx-
J11 pLAN
Rx+/Tx+
B1 B1
GND
B2 B2
probe 2 (4/20 mA)
J2
Fi e ld B u s c ard
B3 B3 Rx-/Tx-
J25 BMS2
M Rx+/Tx+
GND GND
probe 3 (0/1 Vdc or 4/20 mA) OUT
GND
+V +VDC +VDC
B4 B4
Rx-/Tx-
J26 FBus2
probe 4 Carel NTC
BC4 BC4 Rx+/Tx+
J3
B5 B5 GND
probe 5 PT1000
BC5 BC5
C1 C1
NO1 NO1 digital output 1
J12
VG VG NO2 NO2 digital output 2
VG0 VG0 NO3 NO3 digital output 3
analog output 1 (0/10 Vdc) Y1 Y1 C1 C1
J4
analog output 2 (0/10 Vdc)

B MS c ard
Y2 Y2 C4 C4
analog output 3 (0/10 Vdc) Y3 Y3 NO4 NO4 digital output 4
J13
analog output 4 (0/10 Vdc) Y4 Y4 NO5 NO5 digital output 5
digital input 1 ID1 ID1 NO6 NO6 digital output 6
digital input 2 ID2 ID2 C4 C4
digital input 3 ID3 ID3
C7 C7
digital output 7
J14
NO7 NO7
J5

C7 C7
digital input 7 ID7 ID7 NO8 NO8 digital output 8
digital input 8 ID8 C8 C8
J15
ID8
IDC1 NC8 NC8
SMALL
IDC1
B6
B7
J6
B8
J16
GND
B6 B6
B7 B7
J6
out H
M
CP B8 B8
C9 C9
J16
NTC
NTC
GND GND digital output 9
NO9 NO9
+ (G)
ID9 ID9 digital output 10
digital input 9 NO10 NO10
ID10 ID10
digital input 10 NO11 NO11 digital output 11
J7
ID11 ID11
digital input 11 C9 C9
ID12 ID12
probe 6 - 7 digital input 12
IDC9 IDC9 NO12 digital output 12
NO12
probe 8 CAREL NTC
C12 C12
J17
ID13H ID13H
digital input 13 NC12 NC12
ID13 ID13
IDC13 IDC13 NO13 digital output 13

NO13
MEDIUM
ID14 ID14 C13

C13
J18
ID14H ID14H NC13

digital input 14 NC13
J8
NO14 digital output 14

C14
NC14
J21
ID15H NO15 digital output 15

digital input 15
ID15 C15
J19
IDC15 NC15
ID16
ID16H
digital input 16
C16

J22

Y5
analog output 5 (0/10 Vdc) C16
analog output 6 (0/10 Vdc) Y6
B9
probe 9 CAREL NTC Rx-/Tx-
BC9
J23 FBus2
J20
B10 Rx+/Tx+
probe 10 BC10
GND
voltage-free
ID17
digital input
LARGE
digital input 17 ID18
digital input 18 IDC17
Fig. 8.a
60 “pCO5” +0300009EN rel. 1.0 - 13.11.2011
ENG
8.2 pCO5 with built-in EVD evo
driver
G0
G
2.5 AT
100VA
Fig. 8.b
Valve connectors J27 & J28: 1 = green

3 = brown
2 = yellow
4 = white
Connect the spade to the valve cable shield and then earth.
G0 is earthed on the transformer secondary
“pCO5” +0300009EN rel. 1.0 - 13.11.2011 61

ENG
9. TROUBLESHOOTING
The unit does not come on (power LED off ) NTC probes: the probe signal is a resistive value that depends on
Check: the temperature.
1. mains voltage is connected; Below are some resistance values for different temperatures.
2. 24 Vac or 28 to 36 Vdc is available downstream of the power Disconnecting the probe from the interface and measuring its resistance
transformer; with a multimeter gives the corresponding temperature in the table.
3. the 24 Vac or 28 to 36 Vdc power supply connector is plugged in
°C KΩ °C KΩ °C KΩ
correctly; -20 67.71 0 27.28 20 12.09
4. the protection fuse (if present) has not blown; -15 53.39 5 22.05 25 10.00
-10 42.25 17 17.96 30 8.31
On power-up various problems occur on the LCD (strange -5 33.89 15 14.68 35 6.94
characters, blank screen). Tab. 9.i
Check: Measuring the voltage at terminals Bn and GND with a voltmeter, with an
1. correct software in the flash; NTC connected, the voltage should be:
2. check the pCO and terminal pLAN address (compliant with the VIN= 2.5 x R NTC
application being used); 10000 + R NTC
3. if the built-in display is featured and is working correctly, the problem
Example:inserting a 10 KΩ input resistor (corresponding to 25°C) gives:
resides in the connection between the pCO and the terminal: make VIN= 2.5 x 10000 = 1,25 V
sure the cable is plugged in correctly. 20000
For the pCOXS, the following formula is used:
Input signals not read correctly VIN= 5 x RP where RP is the parallel resistance expressed in ohms
Check: 10000 + RP between the NTC resistance and 20000 Ω
1. correct pCO power supply;
2. correct probe power supply: if the voltage (+Vdc>20 V) is near zero,
disconnect the probe and measure the power supplied by the pCO. If To check the settings of the probe inputs (pCO5)
this is still near zero, turn the controller off and wait a few minuted. If Switch off the pCO and make the following measurements with a tester
the problem arises again contact CAREL service; otherwise removing between the probe input Bn and GND:
the connection has short-circuited the power supply. • on inputs B1, B2, B3, B6, B7 and B8 the resistance is around 150 KΩ;
3. separation of the power supply to the digital inputs from the power • on inputs B4, B5, B9 and B10 the resistance is around 0 kΩ.
supply to the pCO. A 24 Vac/24 Vac transformer with a minimum
rating of 5 VA can be used; As on the pCO the type of analogue input is set via software, if the
4. the probe wires have been connected according to the instructions; application allows, a more correct way of checking involves disconnecting
5. the probe cables are located a sufficient distance from possible the probes and powering up the pCO.
sources of electromagnetic disturbance (power cable, contactors,
cables with high voltages and devices with high peak current draw); Measure:
6. there is not high thermal resistance between the sensor and the probe type voltage measured
probe socket, if used. If necessary, put conductive paste or oil in the NTC 2.5 V (3.3 V if pCOXS)
socket to ensure good temperature transmission; 4 to 20 mA 0V
7. if there’s a probe error or a conversion error on the pCO, the checks to PT1000 2.5 V
0 to 1 V or 0 to 10 V 0V
be performed depend on the type of probe.
0 to 5 V 0 V (3.3 V if pCOXS)
Tab. 9.a
Active humidity probes with 0 to 1 V signal: the probe signal

is measured with a voltmeter between terminals Bn and GND, Doubtful alarm signal from digital input (for pCO5)
checking to make sure this corresponds to the value: 1 mVdc Check the voltage between the common terminal “IDC1” and the terminal
corresponds to 0.1% RH for the digital input indicating the alarm “IDn”, in the following conditions:
Example: reading 200 mVdc (0.2 Vdc) the probe sends a signal that 1. if voltage is measured (24 Vac or 24 Vdc depending on the power
corresponds to 20% RH supply used for the digital inputs) the contact of the alarm device
connected is closed;
2. if the voltage is less than around 10 Vac or 10 Vdc (see above) the
Pressure probes: if errors arise in the readings of these probes, contact is open;
check that: 3. unless expressly declared otherwise, the controller signals an alarm
1. the analogue inputs used for these probes can accept 4 to 20 mA when it detects open contacts.
signals (selected in the application program);
2. the full scale set via software corresponds to the probes used;
3. the probe capillary tube is not blocked.
4. Measuring the voltage at terminals Bn and GND with a voltmeter
gives an indirect reading of the probe signal, as the input has an
impedance of 100 Ω, applying the formula: I= V/R (2 V= 20 mA).
The pressure value “Ps” that the probe is sending can thus be calculated
(FS= Full scale):
Ps= (Vmeas/100 - 0.004) x (FSmax - FSmin) / 0.016 + FSmin
Example: the probe used has FSmin= -0.5 bars, FSmax= 7 bars; the
voltage read is equal to Vmeas= 1 Vdc.
The pressure Ps that the probe is measuring is equal to: Ps= (1/100 - 0.004)
x [7 - (-0.5)] / 0.016 + (-0.5) = 2.3 bars.
62 “pCO5” +0300009EN rel. 1.0 - 13.11.2011

ENG
The pCO repeatedly goes into watchdog mode, i.e. switches off and
on again as if there were a temporary power drop or some outputs
(digital and/or analogue) are activated at random
Check:
1. that the power cable does not run near the pCO;
2. that the power transformer (not supplied by CAREL) is sized correctly
(see the paragraph on POWER SUPPLY);
3. that the probe and digital input cables are kept separate from the
other cables (panel and conduits).
The serial connection to the local supervisor isn’t working

Check:
1. the serial card code PCOS004850 is fitted and connected correctly;
2. that the identification number of the pCO has been set correctly (see
the application program manual);
3. that the serial cabled are connected correctly according to the CAREL
diagram shown in the documents corresponding to the supervisor
network;
The user terminal is frozen (doesn’t respond when the buttons are
pressed)
Check:
1. that the terminal hasn’t been disconnected and then reconnected to
the pCO without waiting 5 seconds. In that case switch the pCO off
and on again with the terminal connected;
2. that the software on the pCO has been installed correctly using the
SMARTKEY or via PC with WinLoad;
3. see chap. 5.
“pCO5” +0300009EN rel. 1.0 - 13.11.2011 63

ENG
Note:
64 “pCO5” +0300009EN rel. 1.0 - 13.11.2011

ENG
Note:
“pCO5” +0300009EN rel. 1.0 - 13.11.2011 65

ENG
Note:
66 “pCO5” +0300009EN rel. 1.0 - 13.11.2011

Agenzia / Agency:
+0300009EN - rel. 1.0 - 13.11.2011
CAREL INDUSTRIES - Headquarters

Via dell’Industria, 11 - 35020 Brugine - Padova (Italy)
Tel. (+39) 049.9716611 - Fax (+39) 049.9716600
e-mail: carel@carel.com - www.carel.com

User Manual: Programmable Controller

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pCO5

In addition to observing any further warnings described in this manual, the

“pCO5” +0300009EN rel. 1.0 - 13.11.2011 3

1. INTRODUCTION AND GENERAL FEATURES 7

3. USER TERMINALS AND OPTIONAL CARDS 20

4. PCO CONTROLLER INSTALLATION 26

5. PLAN NETWORK CONFIGURATION 36

6. PCO5 SERIAL CONNECTIONS 44

7. UPDATES, FIRMWARE AND LOG FILES FOR PCO

8. GENERAL CONNECTION DIAGRAMS 60

“pCO5” +0300009EN rel. 1.0 - 13.11.2011 5

“pCO5” +0300009EN rel. 1.0 - 13.11.2011 7

max. power: 45 VA/20 W

input: 24 V 50...60 Hz / 28...36 V

“pCO5” +0300009EN rel. 1.0 - 13.11.2011

ID7 NO8 ID15H

Version with VALVE DRIVER

ID13 VREF NC12 NC12

“pCO5” +0300009EN rel. 1.0 - 13.11.2011 9

10 “pCO5” +0300009EN rel. 1.0 - 13.11.2011

“pCO5” +0300009EN rel. 1.0 - 13.11.2011 11

Plug-in connectors pLAN network/user terminal connection

12 “pCO5” +0300009EN rel. 1.0 - 13.11.2011

Valve compatibility table

Warning: the pCO5 with valve driver and PCOS00UC20, EVD0000UC0 or

The 1tool development environment features a module for managing

pCO5 Medium manages the integrated driver board as an EVDevo Twin

“pCO5” +0300009EN rel. 1.0 - 13.11.2011 13

Indicator LEDs: A (yellow) = Close valve A (J27)

C (yellow) = Close valve B (J28)

• Flashing if the valve is moving.

pCO5 hardware simulator

14 “pCO5” +0300009EN rel. 1.0 - 13.11.2011

“pCO5” +0300009EN rel. 1.0 - 13.11.2011 15

Versione TYPE B input voltage:

“pCO5” +0300009EN rel. 1.0 - 13.11.2011 17

tLAN network connection

18 “pCO5” +0300009EN rel. 1.0 - 13.11.2011

2.8 pCO5 compact dimensions

input voltage: max. power:

“pCO5” +0300009EN rel. 1.0 - 13.11.2011 19

3.1 Graphic terminals

20 “pCO5” +0300009EN rel. 1.0 - 13.11.2011

Warning shielded cables must be used even when the pCO is

3.2 Optional cards for pCO sistema

CANbus serial card: PCOS00HBB0

RS485 serial card: PCO100FD10

Warning: to become operational, the interface card must be

Konnex serial card (PCOS00KXF0, PCOS00KXB0)

DC/DC module (PCO20DCDC0)

SMART KEY (PCOS00AKY0 e PCOS00AKC0) DOWNLOAD APPLICATION

Type Function Mode button

The key is programmed as default in read/write mode (type C) so as Fig. 3.x

The “PCOE000TLN0 and PCOE0004850” expansion card is an electronic

“pCO5” +0300009EN rel. 1.0 - 13.11.2011 25

26 “pCO5” +0300009EN rel. 1.0 - 13.11.2011

input: 24 V 50...60 Hz / 28...36 V

S&2 3'(3ULYDWH S&2 3'(3ULYDWH