S000e Pakscan Systems Glossy
S000e Pakscan Systems Glossy
S000e Pakscan Systems Glossy
High Reliability
Field units integral with and double
field environments.
Non-intrusive setting of all parameters.
Full isolation between the network
Simple Integration
Industry standard Modbus protocol to
High Performance
Priority given to commands to the plant.
Full monitoring and control of every
actuators.
Master station monitors full network at
Applications
1
GAS & OIL
PLATFORMS
REFINERY
INSTALLATIONS
PRODUCT
STORAGE
SEWAGE
WORKS
WATER
WORKS
POWER
PLANT
2
Completely Engineered Package
Master Station
Master Station
Display
Comms
uP
Keypad
Comms
EEPROM
Port B
uP
Port A
Opto-isolation
Loop processor
uP
Detector
EEPROM
High efficiency
Conventional
Cable Cores
Information from
an IQ Actuator
Pakscan 2 Wire
Network
Open/stop/close
control
2*
2*
Percentage open
Local/remote switch
2*
Percentage torque
Motor thermostat
tripped
Valve obstructed
Contactor failing to
energise/de-energise
Excessive valve
travel time
Communication failure
Total: 22
for each actuator
Cable Savings
The use of the 2 wire system greatly
reduces the number of cable cores
required to transfer signals from the
actuator to the control centre.
Comprehensive Data
Modern day electric actuators contain
comprehensive diagnostic and alarm
information about both the actuator and
the valve.
The Pakscan system allows all the
inbuilt performance features of Rotork
actuators to be transmitted across the
network.
Total: 2
for all actua
tors
Simple Configuration
Each system is supplied entirely preconfigured, already having a full data base
and Modbus protocol configuration when it
is delivered. To complete the plant specific
settings the number of field units and the
loop communication speed together with
the host communication parameters are
entered through the keypad.
It takes only a few moments to tailor the
system to the actual plant and it is easy to
reconfigure the settings if the design
changes.
Automatic Expansion
When additional actuators are fitted to
the Pakscan network the system locates
these, identifies them and includes them
in the data reporting automatically. There
is no need to reconfigure the system or
modify the internal data base, simply
change the setting for the number of
field units by using the inbuilt keypad
and screen.
Master Station
Port B
in out
Add 2
Port A
in out
Master Station
Port A
in out
Port B
in out
Add 1
Add 2
Add 1
Cable Faults:
Add 4
Add 3
Open Circuit
Add 3
Add 4
Ground Fault
LB on
LB on
Cable
Fault
Short Circuit
O rings
Pakscan
field unit
10
Modbus communications
Command instructions from the host have
priority and are processed immediately by
passing the message to the field unit
concerned.
Master Station to
Host System
The Pakscan system acts as a slave to a
host. The host system may be a DCS,
PLC or SCADA system and it can
communicate with the Pakscan equipment
by either RS232 or RS485, half duplex, at
data rates up to 19,200 baud. The
information is passed using the universally
accepted Modbus RTU protocol.
Information is continuously gathered by
the master station from the field units, so
ensuring that information requests by the
host system are serviced with an
immediate reply from the internal data
base. This permits fully asynchronous
data transfer between the field equipment
and the host system.
PLC/DCS
Modbus RTU comms link
2 wire loop
2 wire loop
Multi-drop Capability
Every Pakscan master station is fitted
with an RS485 2 wire half duplex
Modbus communication port in addition
to an RS232 port. When the host system
is controlling more than one Pakscan
master station and 2 wire loop an RS485
multi-drop highway may be used to
minimise the host system hardware and
cabling. If the host system is unable to
support RS485 then Rotork has a stand
alone RS232/RS485 converter that may
be used.
PLC/DCS
2 wire loop
Multi-drop
Dual Modbus
Comms Links
2 wire loop
11
High performance
Scan Time (seconds)
Baud
Rate
110 baud
(Secs) 50
300 baud
20
240
600 baud
10
110
9.8
24.8
39.9
54.9
300
3.6
9.2
14.8
20.4
600
1.8
4.51
7.4
10.2
1200
0.9
2.3
3.7
5.1
2400
0.5
1.25
2.0
N/A
Baud
Rate
Number of FCU
60
120
110
20.3
20.3
300
17.1
600
12.2
1200
2400
cable
2400 baud
1
0
15
300 baud
10
600 baud
13.7
11.1
8.8
4.1
2.9
0.6
1.5
0.3
N/A
432
300
216
600
108
1200
54
2400
27
240
180
240
15.9
110
120
No. of FCU
110 baud
Time
60
(km) 25
20.3
Baud
Rate
1200 baud
1
2400 baud
0.5
60
120
No. of FCU's
1200 baud
240
180
(msec) 500
200
100
50
20
110
300
600
1200
Baud Rate
2400
12
Comms Link
Comms Link
PLC/DCS
Hot Standby
Master Station
Cable Fault
Protection
13
Pakscan IIE
Control room or equipment room
mounting, this master station is capable of
controlling up to 240 field units. Two fully
independent systems can be mounted in
the 133 mm high 19 rack.
The Pakscan IIE is complete with two
communication ports, a screen and
keypad and the ability to include
RS232/RS485 converters.
Enclosure: Standard 19 rack to DIN 41494
Supply voltage: a.c. 90-264V, 43-440 Hz
Power consumption: 30VA
Field units: up to 240
Current loop: 20 mA 15V
Cable: 500 Ohm max resistance, 3.9uF max
capacitance
Host communications: 2 Modbus RTU half
duplex comms ports, 1 off RS232 and 1 off
RS485 (2 wire)
Refer to publication S110E
14
Pakscan IIS
The Pakscan IIS combines the field
network control features of all Pakscan
master stations with the logic and
sequencing capabilities of a PLC. Up to
80 sequences and 128 interlocks can be
programmed into the unit. Pakscan IIS
master stations can each control up to 32
field units.
Enclosure: Wall or Panel mounting, IP65
Supply Voltage: a.c. 90-264V, 43-440 Hz
Power consumption: 50VA
Field units: up to 32
Current loop: 20 mA 15V
Cable: 500 Ohm max resistance, 3.9uF max
capacitance
Host communications: 2 Modus RTU half
duplex comms ports, each selectable RS232 /
RS485 (2 or 4 wire)
Refer to publication S112E
15
Pakvision
Pakvision 5 is a user friendly PC based
SCADA system designed specifically for
interfacing to Rotork actuators through the
Pakscan network.
It provides a graphical interface to the
valves and plant using mimic diagrams to
show the plant layout. Any valve may be
controlled and navigation through the
application is by mouse control. Sequence
control and valve interlocking is available,
together with scheduled activities and full
alarm and event logging.
Performance: Controls up to 1000 valve
actuators
Pictures: 250 mimic diagrams
Sequences: 512
Interlocks: 1024
System requirements:
AT compatible computer
1 serial port (RS232)
Keyboard and mouse
MS-DOS 5 or later MS-DOS operating system
Refer to publication S210E
Accessories
Paktester
The Paktester allows the variable
parameters of all the different types of
field unit available on the Pakscan system
to be set. It connects directly to the
actuator or field unit and allows the user
to interrogate and control the field unit. It
also performs diagnostic functions when
fault finding on a system or actuator.
Pakreader
The Pakreader complements the
Paktester by enabling any master station
communications link to be examined. It is
a serial communicator that acts like a
hand held host system and provides for
direct control over a master station.
Converter PS412
The PS412 converter is a stand alone
RS232/RS485 converter that includes
smart intelligence. Many PLC and DCS
systems do not have a true RS485
communication port and this converter is
exactly matched to the Pakscan system.
The unit is supplied with a universal
power pack for 90 - 264V ac.
UK head office
Rotork Controls Limited
telephone Bath 01225 733200
telefax 01225 333467
http://www.rotork.com
telephone
telefax
(0353) 381566
(0353) 381570
CANADA Calgary
CANADA Toronto
CHINA Shanghai
(021) 62787680
(021) 62787681
(10) 64619442/64664433
(10) 64619502
FRANCE Paris
(01) 43 11 15 50
(01) 48 35 42 54
GERMANY Hilden
(02103) 54098
(02103) 54090
2520 2390
2528 9746
INDIA Chennai
(044) 6258494/6257107
(044) 6257108
INDONESIA Jakarta
(21) 5806764
(21) 5812623
ITALY Milan
(02) 45703300
(02) 45703301
(03) 2446418/2457443
(03) 2446416
NETHERLANDS Rotterdam
RUSSIA Moscow
(095) 2292463
(095) 2292463
SINGAPORE
4571233
4576011
SPAIN Bilbao
THAILAND Bangkok
(02) 2593918/2593919
(02) 2593920
USA Houston
(713) 7825888
(713) 7828524
VENEZUELA Caracas
(02) 2653536/2656882
AUSTRALIA Ballarat