Ps300 User Manual en

®
TWERD
Renewable Energy Sources
Three-phase
photovoltaic and wind inverters
PS300-PV
PS300-WT
PS300-H
3 kW, 5 kW, 8 kW, 10 kW
On-Grid
Photovoltaic systems (PV)
Wind turbine systems (WT)
Hybrid systems (H)
User manual
Ver. 2.1.0
www. twerd.pl
Contents
1. Device description......................................................................................................................................... 5
2. Conditions of safe operation......................................................................................................................... 6
2.1. Warnings............................................................................................................................................... 6
2.2. Basic rules............................................................................................................................................ 6
2.3. Protection against electric shock.......................................................................................................... 7
2.4. Operation list after receiving the device................................................................................................ 7
2.5. Environmental conditions...................................................................................................................... 7
2.6. Recycle................................................................................................................................................. 7
3. Specification................................................................................................................................................. 8
3.1. Technical data....................................................................................................................................... 8
3.2. Mechanical dimensions and weight.................................................................................................... 10
3.3. Inverter view from the connectors side................................................................................................11
4. Preparing for installation............................................................................................................................. 12
4.1. Inverter installation location................................................................................................................ 12
4.2. Environmental condition...................................................................................................................... 12
4.3. Cooling................................................................................................................................................ 12
4.4. Usege of residual current devices....................................................................................................... 12
4.5. Power line connector.......................................................................................................................... 13
4.6. Installation position............................................................................................................................. 15
4.7. Power circuit terminals........................................................................................................................ 16
5. ON-GRID installation.................................................................................................................................. 17
5.1. Wind turbine inverter - with permanent magnet synchronous generators AC input............................18
5.2. Photovoltaic panels inverter - with PV panels DC inputs....................................................................19
5.3. Hybrid inverters - with PV panels DC and permanent magnet synchronous generators AC inputs....20
6. Built-in control panel................................................................................................................................... 21
6.1. Information displayed on the operator panel without removing the inverter cover.............................22
6.2. Operating the control panel using buttons..........................................................................................23
6.3. Updating the Control panel software................................................................................................... 25
7. The first run................................................................................................................................................. 27
7.1. Maximum Power Point Tracking (MPPT) and Global Maximum Power Point Tracking (GMPPT)......27
7.2. 16 point load characteristic of a synchronous generator.....................................................................28
7.3. Start/Stop command........................................................................................................................... 28
7.4. Dump load resistors............................................................................................................................ 29
7.5. The internal process of switching ON the inverter in ON-GRID mode................................................29
8. Inverter reactive power control.................................................................................................................... 29
8.1. Mode Q set......................................................................................................................................... 29
8.2. Mode Cosφ set................................................................................................................................... 29
8.3. Mode Q(U).......................................................................................................................................... 30
8.4. Mode Cosφ(P).................................................................................................................................... 31
9. Digital inputs and outputs............................................................................................................................ 32
9.1. Generator load control........................................................................................................................ 33
9.2. Anemometer....................................................................................................................................... 34
9.3. Storm Protection................................................................................................................................. 34
9.4. Remote Output Stop Order................................................................................................................. 34
10. Communication parameters setting.......................................................................................................... 35
10.1. Connecting the inverter to the Internet............................................................................................. 36
10.2. Communication via Json file............................................................................................................ 36
11. Inverter Monitoring System via “www.inverters.pl”....................................................................................37
11.1. Creating an user account.................................................................................................................. 37
11.2. Login................................................................................................................................................. 37
11.3. Adding the inverter to the system to monitor its operation.................................................................37
11.4. Account Settings............................................................................................................................... 39
12. Configuration of Parameters..................................................................................................................... 41
12.1. Inverter status parameters – group 0................................................................................................ 41
12.2. Inverter configuration parameters..................................................................................................... 43
GROUP 1 – Grid module...................................................................................................................... 43
GROUP 2 – Input 1 : PV1..................................................................................................................... 44
GROUP 3 – Input 2 : PV2 / WT............................................................................................................ 44
GROUP 4 – Input 3............................................................................................................................... 45
GROUP 5 – Battery charger module.................................................................................................... 45
GROUP 10 – Service parameters......................................................................................................... 46
Chapter
GROUP 11 – Grid parameters.............................................................................................................. 47

GROUP 12 – EN50549 Grid parameters.............................................................................................. 50
13. Faults........................................................................................................................................................ 53
14. Ordering information................................................................................................................................. 56
15. Warranty conditions.................................................................................................................................. 56
16. EU Declaration Of Conformity................................................................................................................... 57
4 PS300 – User’s manual

Chapter 1. Device description
1. Device description
The family of three-phase, high-efficiency and transformerless inverters type PS300 is designed for
cooperation with small photovoltaic power plants as well as wind and water based on synchronous
generators with permanent magnets. These inverters enable the transmission of energy obtained from the
power plant to the three-phase electrical network - the so-called "on-grid" systems. Inverters are working
fully autonomously. After being installed by an authorized person, the user's role is only to systematically
check the condition of the device (failure, flooding, etc.).
The offer includes the following types of inverters:
• PS300-WT/3kW, PS300-WT/5kW, PS300-WT/8kW, PS300-WT/10kW - AC voltage inverters

designed for small wind or water turbines with permanent magnet synchronous generators. Input on
the inverter is marked as WT.
• PS300-PV/3kW, PS300-PV/5kW, PS100-PV/8kW, PS100-PV/10kW - inverters with one (systems
3 kW) or two (5.5 kW systems and above) DC voltage inputs: for installation with solar panels. Input
on the inverter is marked as PV.
• PS100-H/5kW, PS100-H/8kW, PS100-H/10kW - hybrid inverters with one alternating voltage (WT)
and one direct voltage (PV) input: they enable simultaneous connection of solar panels and a
synchronous generator.
Note: The total power of the connected solar panels and the synchronous generator may not be greater
than the nominal power of the inverter, and voltages and currents may not exceed the permissible values of
the given input – table 3.1 page 8.
Photovoltaic panels are loaded on the basis of a follow-up MPPT (Maximum Power Point Tracking)
algorithm, while for synchronous generators it is necessary to enter a 16-point characteristic of the generator
input current as a function of its frequency. In addition, load control of a synchronous generator can be done
by directly setting the load current via the MODBUS communication protocol (RTU, TCP / IP). Each of these
algorithms is designed to optimally use a renewable source of electricity (RES).
Via the www.inverters.pl portal, MODBUS or Json communication protocol, you can read from the system
information about:
• current inverter input and output voltages and currents,

• current output power (home appliances or electrical network),
• energy delivered in the last 24 hours,
• information on occurring failures.
The system is equipped with an extensive diagnostic system as well as blockades and protections protecting
the inverter,and user. Has security:
• from the mains side:

◦ protection against incorrect mains parameters: voltage, frequency,
◦ protection against off-grid island operation (disconnection by relays from the mains in the event of
its disappearance),
• from the generator side: overvoltage, overcurrent, before the generator runaway,
• from the PV side: overvoltage, overcurrent,
• against too high an inverter heat sink temperature.
Limitation of Liability
Despite all efforts and due diligence, TWERD Power Electronics Limited does not guarantee that the
published data is free of errors. If you have any doubts or would like to receive additional information, please
contact us. All trademarks used are the property of their respective owners.
PS300 – User’s manual 5

Chapter 2. Conditions of safe operation
2. Conditions of safe operation

Before installing and working with the device, make sure you read the instructions with this description.
Ignorance of the information contained therein may cause a threat to life, human health or irreversible
damage to the device.
RISK OF ELECTRIC SHOCK! HOT SURFACE!
2.1. Warnings
• Incorrect installation, use, and maintenance of the device can cause physical injury or death, or
damage to the device and connected equipment.
• Some housing components, including a heat sink, can heat up to more than 80°C during normal
operation there is a risk of burns.
• Installation, use, and maintenance of the device must be performed only by qualified personnel.
• Before switching on the device, make sure the device has been correctly installed and all housing
elements have been properly assembled.
• When the device is connected to the supply voltage, its internal components (except the control
terminals – pic. Hata: Başvuru kaynağı bulunamadı page Hata: Başvuru kaynağı bulunamadı) are on
the power supply potential. Touching these components can cause an electric shock.
• Voltage at the DC link capacitors can cause electric shock. It lasts for 5 minutes after disconnecting
the power supply.
• Do not make any changes to the connections when the device is connected to the power supply.
• Before working on the device, disconnect all power sources and make sure that there is no
dangerous voltage at the connection terminals.
2.2. Basic rules

• The PS300-WT inverter should not be connected to cooperate with the synchronous generator
without load resistors, as this may cause the turbine to run out, and consequently damages for which
the manufacturer is not responsible.
• Do not make any connections when the electrical voltage is supplied to the inverter: from the mains
side, photovoltaic panels, wind/water turbine generator, battery bank, etc.
• Do not measure the voltage endurance of any unit devices.
• To measure the cables insulation it is necessary to disconnect them from the device.
• Do not touch the integrated circuits even when the device is switched off, as static discharges may
damage them.
• Make sure that no other passive components are connected to the cables, such as resistors,
capacitors, coils.
• Do not repair the device by yourself. All repairs can only be carried out by the manufacturer's
authorized service. Finding repair attempts will void the warranty.
• After removing the front cover of the inverter, you gain access to the buttons on the operator panel
and at the same time to elements that are, under normal inverter operation, under voltage that is
dangerous to life and health (active parts).
ATTENTION: Particular caution should be exercised due to the possibility of electric shock.
Disassembly of the front cover of the inverter (when the device is supplied with voltage from both the
mains and the generator) and changes in settings can only be made by a person with appropriate
electrical qualifications.

Chapter 2. Conditions of safe operation
• Periodically, you should check:

◦ Connection of protective conductors,
◦ Wiring (the connections, insulation),
◦ Whether water did not got inside the system,
◦ he degree of heat sink dirtiness.
2.3. Protection against electric shock

Protective conductor must be connected to inverter’s PE terminal on terminal strip.
The device has built-in protection against earth fault currents, but it only protects the device and
does not protect a user against electric shock.
2.4. Operation list after receiving the device

• After unpacking the device, it is necessary to check up visually the presence of damages which
could arise during the transport.
• Check up the correspondence between the delivered frequency converter and the order - check up
the ratings plate on the case.
• Check up the correspondence between conditions in which the converter will be used and conditions
of the environment for which it is designed.
• Installation of the frequency converter should be made according to principles of safety and EMC
rules.
2.5. Environmental conditions

a. Degree of pollution
During design, the second degree of pollution has been assumed, at which there is normally only non-
conducting pollution. However there is a probability of temporary conductivity caused by condensation, when
the device is disconnected from the voltage source.
In case the environment in which the device will work contains pollution which can influence its safety, it
is necessary to apply appropriate counteraction, using, for example, additional cases, air channels, filters etc.
b. Climatic conditions
Table 2.1. Installation, warehousing and transport conditions

Installation site During warehousing During transport
Temperature -10ºC..+40ºC -25ºC .. +55ºC -25ºC .. +70ºC
In protective packing
Relative humidity 5% .. 95% 5% .. 95% Max 95%
Short-term, insignificant condensation on the external side of the device case is
permitted only when the device is disconnected from the voltage source.
Air pressure 86kPa .. 106kPa 86kPa .. 106kPa 70kPa .. 106kPa
2.6. Recycle
Equipment containing electrical and electronic components may not be disposed of in
municipal waste containers. Separate such equipment from other waste and attach it to
electrical and electronic waste in accordance with applicable local regulations.

Chapter 3. Specification
3. Specification
3.1. Technical data
Table 3.1. PS300 inverter technical data
PS300
No. Description Symbol
3 kW 5 kW 8 kW 10 kW
1 WT input (alternating voltage): synchronous generator with permanent magnets
PS300-WT and PS300-H inverters
1.1 Working voltage range from the AC Ugen 3 x 60..425 V AC
generator side (Phase - Phase)
1.2 Rated voltage from the AC generator side Ugen-n 3 x 400 V AC
(n* nominal)
1.3 Maximum input current from the AC generator side
PS300-WT Igen-max 13 A 13 A 13 A 20 A
PS300-H Igen-max 13 A 13 A 13 A 13 A
2 Inputs PV1, PV2 (direct voltage): solar panels
PS300-PV and PS300-H inverters
2.1 Voltage range from the PV side Upv 60..900 V DC
2.2 MPPT voltage range of operating UMPPT 120..850 V DC
2.3 Maximum current of PV panels Ipv-max
PS300-PV 13 A 13 A 2 x 13 A 2 x 13 A
PS300-H 13 A 13 A 13 A 13 A
2.4 Type of PV connector - MC4
3 Number of PV and WT inputs - PS300-PV 3kW, 5kW
1 PV Input : PV 1
PS300-PV 8kW, 10 kW:
2 PV Inputs : PV1, PV2
every input has independent
MPPT algorithm
PS300-WT 3kW, 5kW, 8kW, 10 kW:
1 WT Input
PS100-H 5kW, 8kW, 10kW:
1 PV Input(PV1) + 1 WT Input
4 Nominal AC output power Pn 3 kW 5 kW 8 kW 10 kW
5 Output voltage Uout 3 x 400 V, 50 Hz
(from the power grid side)
6 The maximum output current Iout 4,5 7,5 12,0 14,5
7 Efficiency (at rated output power) ƞ 97 %
8 Current THD THDi < 3%
9 Switching frequency fsw 16 kHz
10 Maximum temperature of heatsink Trad-max 85 oC
11 Communication - Ethernet, RS-485
12 Digital inputs DI1..DI5 5
13 Relay outputs K1 K1: Switchable, 2A 230V AC
K2, K3 K2, K3: Normally Open, 2A 230V AC

PS300
No. Description Symbol
3 kW 5 kW 8 kW 10 kW
14 Internal relays controlling the operation of Resistor 30 A, AC1
braking resistors
PS300-WT and PS300-H inverters
15 Protections - Before the generator run-up.
- Before too high device temperature,
- Electrical network parameters monitoring system.
16 Algorithm of Maximum Power Point • WT synchronous generator input (AC): characteristic
Tracking Igen=f(fgen) defined by user.
• PV input (DC): advanced MPPT global tracking
system that guarantees finding the optimal operating
point even with partially shaded or in series-
connected panels.
17 Power consumption in standby mode - 2W
18 Humidity - 85% dla 40oC
19 Ambient temperature range - -10ºC..+40ºC
20 IP protection - IP65
21 Weight - Look at the chapter 3.1 on page 9.

3.2. Mechanical dimensions and weight
Mounting Frame
Fig.3.1. Mechanical dimensions of the inverter
Weight of the inverter with mounting frame: 33 kg.

3.3. Inverter view from the connectors side
PV1 PV2
+ +
PV SWITCH
ps300-20-en
Fig.3.2. Inverter view from the connectors side

Note: PV connectors and a PV switch only exist in the PS300-PV and PS300-H
inverters

Chapter 4. Preparing for installation
4. Preparing for installation

4.1. Inverter installation location
• The inverter is designed for installation both indoors and outdoors.
• The inverter has an IP65 protection rating and should be considered when choosing the mounting
location.
• To keep the inverter temperature as low as possible, the inverter must not be exposed to direct
sunlight. The inverter must be installed in a sheltered place.
• The inverter should not be installed and operated at altitudes above 2500 m a.s.l.
• In general, the inverter has a dustproof construction. However, in areas with high dustiness, cooling
surfaces can be dusted and the thermal performance may be significantly reduced. In this case, it is
necessary to clean the heat sink regularly. Therefore installation is not recommended in rooms and
areas with high dustiness.
• The inverter must not be installed in:
◦ flammable and / or explosive environment as it may cause fire and / or explosion,
◦ area of puffing ammonia, corrosive vapors, acidified or salty air (e.g. in fertilizer depots, barn
ventilation holes, chemical installations, tanneries, etc.),
◦ premises with an increased risk of accidents involving farm animals (horses, cattle, sheep, etc.)
◦ stables and adjacent rooms,
◦ warehouses and warehouses for hay, straw, sawdust, animal feed, fertilizers, etc.,
◦ greenhouses,
◦ rooms where fruit, vegetables and vines are stored and processed,
◦ rooms for the preparation of cereals, green feed and feed additives.
• Due to the low noise generated by the inverter in certain operating conditions, staying for a long time
may be slightly burdensome for some people, so installation in the immediate vicinity of living
quarters is not recommended.
4.2. Environmental condition

The PS300 inverter should work in dry rooms with little dust. Ambient temperature should not exceed
o
40 C and relative humidity 85% according to tab. 2.1 on page 7.
4.3. Cooling
In order to ensure the required air circulation, the inverter should be mounted so as to keep a free space
of at least 20 cm from the top and bottom and 10 cm from both sides. When installing in a closed enclosure,
use ventilation openings. It is advisable to use an additional fan. Prevent dust from settling on the heat sink
surface. The radiator should be cleaned from time to time.
4.4. Usage of residual current devices

Due to the built-in RFI filter, the residual current must be at least 200 mA.

4.5. Power line connector
Remember to carry out voltage-free installation work. Otherwise, there is a risk of electric shock that
is dangerous to health and life.
The inverter set includes a connector for connecting the inverter from the 3-phase 400 V, 50 Hz electrical
network. The terminals on the connector are labeled respectively: L1, L2, L3 and N. The PE terminal is
marked with a grounding symbol - Fig.4.1. View of the mains connector
N PE L3
L1 L2
ps300-30-1
Fig.4.1. View of the mains connector
Pictures 4.3 - 4.5 below show the subsequent stages of connector preparation. Picture 6.2 shows how to
disconnect the connector.
Connecting the
electrical network cable
ps300-26.3
Fig.4.2. Connector preparation

Tightening torque
typ. 4+1 Nm
ps100-27-1en
Fig. 4.3. Closing the connector
ps100-28-1
Fig. 4.4. Connecting the connector to the inverter

Note: If you need to disconnect the connector, remember to latch - 1. in Fig. 4.5
ps100-29-1
Fig. 4.5. Unlocking and separating the connector
4.6. Installation position

The inverter is designed to be installed vertically on a vertical wall (±15 degree) with connectors facing
downwards. The inverter is not designed to be installed in any others positions, especially:
◦ in horizontal position,
◦ on sloping surface,
◦ when connectors facing downwards,
◦ on the ceiling,
◦ overhangs with its connection sockets facing upwards.
First, fix the mounting plate with 4 screws. Then hang the inverter on this board and secure it with two
screws and an optional padlock.
ps100-13-1
Fig. 4.6. Wall mounting

4.7. Power circuit terminals

Figure 5.1 , 5.2 and 5.3 shows an electrical diagram of power cables connections. The power electric circuit
is connected to the terminal strip, which is located on the bottom plate of the device. On it there are also
fuses of a value depending on the inverter power - Table 4.1.
Blow of fuse can be caused by incorrect operation of the inverter or connected to it electric circuits.
Replacing the fuse without analysing the cause of the failure may result in more severe damage to the
inverter that is not covered by the warranty. For this reason, the replacement of fuse can only be done by the
manufacturer's service.
Access to the power circuit terminals is obtained by removing the front cover of the inverter.
Table 4.1. Internal DC and power supply lines fuses values
Internal DC protection fuse Fuse protection from

PS100
(RESs side) electrical grid side
3 kW 16A DC B10
5 kW 2 x 16A DC B10
8 kW 2 x 16A DC B16
10 kW 2 x 16A DC B20

Chapter 5. ON-GRID installation
5. ON-GRID installation
Applies to:
• PS300-WT,
• PS300-PV,
• PS300-H.
DO NOT MAKE ANY CONNECTIONS WHEN AN ELECTRICAL VOLTAGE IS

PROVIDED TO THE INVERTER!
THE VOLTAGE SOURCE MAY BE BETWEEN OTHER:
PV PANELS, GENERATOR, ELECTRIC NETWORK, BATTERIES, EXTERNAL

CONTROL CIRCUITS.
INSTALLATION, MAINTENANCE AND MAINTENANCE OF INVERTER TECHNICAL

PERFORMANCE MAY ONLY BE CARRIED OUT BY A PERSON WHO HAVE
APPROPRIATE QUALIFICATIONS AND HAVE SUFFICIENT KNOWLEDGE IN THE
OPERATION OF ELECTRICAL INSTALLATIONS.
INCORRECT INSTALLATION AND MAINTENANCE OF THE TECHNICAL

PERFORMANCE OF THE APPLIANCE MAY CAUSE DANGER TO LIFE, HUMAN
HEALTH, LOSS OF PROPERTY, OR IRREVERSIBLE DAMAGE TO THE
APPLIANCE.
There are two kind of inputs from the Renewable Energy Sources side:
• WT input (AC voltage input): permanent magnet synchronous generator input – used for
PS300-WT and PS300-H inverters;
• PV1, PV2 inputs (DC voltage inputs): photovoltaic panels input – used for PS300-PV and
PS300-H inverters.
Installation operations must be carried out in accordance with chapter 5.1, 5.2, 5.3. After their execution,
the inverter will be ready for autonomous operation without user intervention.
The user can obtain information about the current state of the device by website www.inverters.pl (see
chapter 11. Inverter Monitoring System via “www.inverters.pl” on page 37), using the communication bus
(RS-485, Ethernet) or directly from the control panel. Detailed description of communication configuration
with the inverter can be found in chapter 10. Communication parameters setting on page 35.
ATTENTION:
When installing the inverter, it should be remembered that the electric circuit on the generator or PV
panel side must be galvanically separated from the power line supply. Additional measurement circuits
between the generator and the inverter must also comply with this principle. Otherwise, the inverter it can
work incorrectly or even damage that will not be covered by the warranty.

5.1. Wind turbine inverter - with permanent magnet synchronous generators AC input
R Wind turbine with
PS300-WT TWERD
synchronous
generator
Emergency
STOP
REZYSTORY GENERATOR PE N L1 L2 L3
Generator’s dump Electrical grid

ps300-02-en load resistors Fuse protection 3 x 400V, 50 Hz
Fig. 5.1. Power circuits wiring diagram for PS300-WT inverter
The order of installation operations:

1. Switch On the Emergency STOP.
2. Unscrew the inverter cover by 4 screws.
3. Connect the generator wires to GENERATOR terminal strip.
4. Connect the generator load resistors to REZYSTORY terminal strip.
5. Be sure that there is no dangerous voltage on wires(!) and then connect to L,N,PE terminal strip the
electrical line.
6. Switch On the power from public electric side.
7. Set the inverter parameters: load characteristic in group 3, breaking parameters in group 10, the
point of start and stop of generator in parameters: 2.1, 1.20 and 1.21. Detailed description is placed
in chapter 7.
8. Refasten the inverter cover by four screws.
9. Switch OFF the Emergency STOP.
10. Wait a moment to ensure that the inverter did not signal the fault.

5.2. Photovoltaic panels inverter - with PV panels DC inputs
PS300-PV TWERD
PE N L1 L2 L3
PV1 PV2
(MPPT 1) (MPPT 2)
Electrical grid
Fuse protection 3 x 400V, 50 Hz
ps300-03-en
Fig. 5.2. Power circuits wiring diagram for PS300-PV inverter

1. Switch OFF the PV switch
3. Be sure that there is no dangerous voltage on wires(!) and then connect to L1, L2, L3, N, PE terminal
strip the electrical line.
4. Refasten the inverter cover by 4 screws.
5. Measure the voltage of solar panels and check their polarization.
6. Connect solar panels to dedicated PV connectors.
7. Switch On the power from public electric line.
8. Switch ON the PV switch

5.3. Hybrid inverters - with PV panels DC and permanent magnet synchronous generators AC inputs
R Wind turbine with
PS300-H TWERD
synchronous
generator
Emergency
STOP
REZYSTORY GENERATOR PE N L1 L2 L3
PV
Fuse protection Electrical grid

3 x 400V, 50 Hz
Generator’s dump
ps300-04-en load resistors
Fig. 5.3. Power circuits wiring diagram for PS300-H inverter

1. Switch On the Emergency STOP.
2. Switch OFF the PV switch.
4. Connect the generator wires to GENERATOR terminal strip.
5. Connect the generator load resistors to REZYSTORY terminal strip.
6. Be sure that there is no dangerous voltage on wires(!) and then connect to L1, L2, L3, N, PE terminal
strip the electrical line.
7. Switch On the power from grid side.
8. Set the inverter parameters: load characteristic in group 3, breaking parameters in group 10, the
point of start and stop of generator in parameters: 2.1, 1.20 and 1.21. Detailed description can be
found in chapter 7.
9. Measure the voltage of solar panels and check their polarization.
10. Connect solar panels to dedicated PV connectors.
11. Switch OFF the Emergency STOP.
12. Switch ON the PV switch.

Chapter 6. Built-in control panel
6. Built-in control panel

After turning the system on, it will initialize and the screen will take its initial state: basic view. Access to the
keys is obtained after removing the front cover of the inverter. The <OK>, <ESC>, <up>, <down>, <right>
and <left> keys are used to navigate the menu and to change parameter settings – see chapter 6.2.
Warning! Be especially careful due to the possibility of electric shock!
Access to the control panel is obtained after removing the front cover of the
inverter. After disassembling the front cover of the inverter, at the same
time, access to elements that are, under the conditions of normal inverter
operation, under the electrical voltage dangerous to life and health (active
parts) is obtained.
Removing the front cover of the inverter (when the electric voltage is supplied to the
device both from the network side and the generator side) and changing the settings can
only be made by a person with appropriate electrical qualifications.
ps100-16.1
Fig. 6.1. Control panel
Table 6.1. Status diodes

Diode colour Type of light Description
LEDs off, the display shows basic Too low inverter input power, inverter in
None
information energy saving mode
Flashing light Inverter is ready to work
Green
Continuous light Inverter is working
Red Continuous light Fault

6.1. Information displayed on the operator panel without removing the inverter cover
The information displayed on the Operator Panel changes cyclically (screens 1 - 6) without user intervention.
Those screened parameters are:
• Screen 1: producer logo, date and time.

• Screen 2:daily generated electrical energy graph.
0.4k
0.3k
2019.11.21 0.2k
07:08:02 0.1k
0.0k
TODAY
Fig. 6.2. Screen 1 Fig. 6.3. Screen 2
• Screen 3: if inverter detects any fault, failure screen will appear and display present failure “Fault
the previous fault “Previous Fault”
• Screen 4: the input voltages and currents values of the inverter.
Fault
098 Observer
Voltage 1 0V
low voltage Current 1 0.0A
Previous Fault
000 No
Voltage 2 0V
fault Current 2 0.9A
Fig. 6.4. Screen 3 Fig. 6.5. Screen 4
• Screen 5:
• Total generated energy from first run-up to present.
• Present output power.
• Present output current.
• Temperature of inverter.
• Velocity of wind.
Energy 333 kWh

Pow out 0W
Curr out 0.0 A
Temp. 25 C
Wind V 0.0 m/s
Fig. 6.6. Screen 5

• Screen 6 – inverters with build-in battery charger module:

• Battery voltage.
• Battery current.
• Temperature of battery charging module.
Bat. vol. 48.9 V

Bat. current 0.0 A
Bat. temp 25 C
Fig. 6.7. Screen 6
6.2. Operating the control panel using buttons

After removing the cover, the buttons are accessed.
To enter the „Main menu”, press the <OK> key. To navigate in the „main menu”, use the <up> <down> and
<right> <left> keys. The highlighted option is selected by pressing the <OK> key, the return to the „main
menu” is done by pressing the <ESC> key.
ENERGY CHART
SETTINGS
Fig. 6.8. Main menu
If it is necessary to change the parameter settings from password protected groups, first select: Settings →
Service and enter the code: 123321.
• Energy menu
◦ "Total" - total energy generated since the inverter was connected to the grid
◦ "Now" - instantaneous power generated
Total 333 kWh

Now 0W
Fig. 6.9. „Energy” menu

• Chart menu - users could enter any specific date than check on the graphics input and output power
values for that day.
• Settings menu - there is a four submenus: PARAMETERS, CLOCK, COMMUNICATION, SERVICE.
CHART
Year: 2020 PARAMETERS CLOCK
Month: 01
Day: 09 COMM SERVICE
Fig. 6.10. Menu „Chart” Fig. 6.11. Menu „Settings”
• PARAMETERS - users are able to see and set value of parameters - except group 0 which
shows read-only parameters. Rest of the parameters are secured by access code. To
access these protected parameters enter the 123321 access code in SETTINGS →
SERVICEmenu, than choose again SETTINGS → PARAMETERS menu.
A full list of parameters is listed in chapter 12. Configuration of Parameters on page 41.
• CLOCK menu - settings related to date and time settings:
◦ Manual / ntp: set time and date manually "Manual" or automatically "ntp".
The "ntp" automatic setting requires access to the Internet.
◦ Time zone
◦ Summer time: EU – automatic summer / winter time change
none – no summer / winter time change
◦ Ntp update h: time of the day at which inverter will synchronize once a day the date and
time with the Ntp server
◦ Set clock: available when the Manual/ntp setting is set to Manual
◦ Ntp server – allows to enter the Ntp server address
◦ Ntp force - immediate force synchronization of date and time
2019.10.13 07:54:44
Manual/ntp ntp
Time zone +01:00
Summer time EU
Ntp update h 22 2019:10:13
Set clock 07:54:02
Ntp server
Ntp force
Fig. 6.12. CLOCK Menu Fig. 6.13. Setting time and date
NTP adres 1
pool.ntp.org
NTP adres 2
pool.ntp.org
Fig. 6.14. Ntp server address

• COMMUNICATION menu - users able to set RS485 and Ethernet communication settings
RS485 ETHERNET
WIFI
Fig. 6.15. COMM menu
Modbus ID 12 IP 192.168.001.100
Baud 38400 SubN 255.255.255.000
Stop Bit 1 bit GW 192.168.001.001
DHCP Wlaczone
TOUT 30
TYPE Modbus
Fig. 6.16. RS485 menu Fig. 6.17. ETHERNET menu

• SERVICE menu - users and authorized technical service members could enter access codes
and get access to related secured levels.
6.3. Updating the Control panel software
1. Disconnect the inverter from the renewable energy source (photovoltaic panels, wind generator).
Connect the USB micro cable to the J2 USB micro connector. Connect the other end of the cable to
your computer. Supply the inverter from the 230V 50 Hz network via terminals L, N, PE
J2
MIKRO USB
Fig. 6.18. View of the Control Panel prepared for software update

2. In the menu follow the Settings → Communication → RS485 than:
- Set modbus address to: 12
- Set baud rate to: 38400
Modbus ID 12
Baud 38400
Stop Bit 1 bit
Fig. 6.19. Menu „Comm”
3. Start the PS100 program. COM ports will be automatically detected.
4. The program will search for the connected inverter and display its ID number.
5. Select the "Start updating application" button - the new software upload process will start.
6. The software update process takes about 3 minutes. After it finishes, it will restart.
Note: If the program stops responding, close the program and restart it.
Fig. 6.20. View of the PS100 program window

Chapter 7. The first run
7. The first run

The device is intended for loading solar panels or / and a permanent magnet synchronous generator. The
system is equipped with the following energy conversion blocks:
• AC / DC / DC: diode rectifier with BOOST converter from the generator side,
• DC / DC: BOOST converter from the side of PV panels,
• DC / AC: active rectifier AcR (active rectifier) working from the side of the power grid (on-grid mode)
or local electrical loads (off-grid mode).
The BOOST converter enables obtaining electricity in a wide range of voltages: from 60 to 450 Vdc. The start
voltage is specified in the service parameter 1.20 The load for photovoltaic panels is based on the maximum
power point tracking algorithm (MPPT) implemented in the device, inverters with two PV inputs have two
independent tracking algorithms.
7.1. Maximum Power Point Tracking (MPPT) and Global Maximum Power Point Tracking (GMPPT)
PS100-PV and PS100-H inverters with PV input (DC voltage input) are using Maximum Power Point
Tracking (MPPT) algorithm. This algorithm constantly analyzes the voltage-current characteristic of a PV
panels and adjusting the load current in such a way as to obtain the greatest possible power from the
system - Fig. Hata: Başvuru kaynağı bulunamadı
Under the partial-shading condition, the voltage-current characteristic of a PV panels is different - instead of
having a single maximum power point (MPP), they exhibit multiple MPPs - Fig. Hata: Başvuru kaynağı
bulunamadı. For this reason, in order to work at the global maximum point, it may be necessary to enable the
global maximum power point tracking (GMPPT) algorithm, which will allow for greater efficiency of the
system.
The user can set the GMPPT scan time in parameter 10.14. The optimal setting is 5 minutes.
Default the GMMPT is switched OFF.
It is recommended to use the GMPPT algorithm only under conditions of possible partial shading. If partial
shading does not occur, using the GMPPT algorithm will decrease overall system efficiency by up to 2%.
Current
Power
Current
Power
ps100-24a.2 ps100-24b.2
Fig. 7.1. Voltage-current characteristic – no shading Fig. 7.2. Voltage-current characteristic – partial
conditions shading conditions

7.2. 16 point load characteristic of a synchronous generator

Converters for synchronous generators have the 16-point load characteristic:
I = f(w)
where: w – generator frequency,
I – current limit [%] in relation to nominal current set in par. 3.30.
Points (w,I) are set by user using the “control panel” in the group 3. A superior current limit is imposed on the
characteristic curve (par. 3.9 „DC curr limit [A]”), the maximum value of which results from the technical
capabilities of the device. However, you can set the lower values by trimming the characteristics as in the
figure below.
Current [A]
Imax (par.
(par. 3.9)
12.17)
ps300-17-1-en Generator frequency [Hz]
Fig. 7.3. 16-point characteristic I = f(w) with superior current limit
7.3. Start/Stop command

The START / STOP command is executed automatically when the DC input voltage exceeds voltage
thresholds responsible for it:
a) Par. 1.20 (group 1, parameter 20) "Autostart volt. [V]" – rectified voltage from the input side
(renewable source of electricity: wind / water generator, PV panels) above which the inverter will
start work (if it was in the STOP state) and begin to transfer energy to the electrical grid.
b) Par. 1.21 (group 1, parameter 21) "Autostop volt. [V]” - rectified voltage from the input side
(renewable energy source) below which the inverter ceases to transfer energy to the mains and goes
into the sleep mode. If the input voltage remains below this level for the time specified in par. 1.11
this inverter will go into the deep sleep state.
Sleep state: the mains voltage maintains the voltage in the batteries of the intermediate circuit
capacitors, the inverter is ready to start working in a few seconds.
Deep sleep state: the inverter's intermediary circuit is disconnected from the mains, it may take
about 1 ÷ 2 min to start working. In this mode, energy consumption is less than in the sleep mode.

7.4. Dump load resistors

Dump load resistors (not supplied) should be connected to proper terminals – see chapter 5. The dump
load resistors relays have switching capacity in the category AC1: 16A.
Dump load resistors will be switched on in four cases:
a) generator’s RMS voltage will exceed the value from the parameter 10.2 (U RMS gen. Ham [V]),
b) generator’s frequency will exceed the value set in the parameter 10.3 (Czest. Gen. ham [Hz]),
c) the lack of the electrical grid,
d) during a failure.
7.5. The internal process of switching ON the inverter in ON-GRID mode
• After connecting to the electrical grid, the inverter with PV inputs monitors the panel voltage; the
inverter with generator input first disconnects the load dump resistors and starts to monitor the
generator voltage and frequency.
• The inverter checks whether the voltage and frequency of the network is correct.
• By collecting energy from a source connected to the input, it increases the voltage in the DC circuit
to the level suitable for switching on the power network.
• Performs synchronization with the electrical grid.
• If the voltage received from the renewable source is high enough (threshold defined by parameter
1.20), the MPPT algorithm starts and the solar panels load according to the MPPT algorithm or
generator according to the curve introduced in group 3. The obtained electricity is sent to the
electrical grid.
8. Inverter reactive power control

The inverter has four modes of reactive power generation control that can be configured by the installer. All
configuration parameters are available in the password protected access menu. The operating mode is set
by changing the setting of parameter 12.34.
Table 8.1. Inverter reactive power control
Options of parameter 12.36 Operating mode
0 Q set
1 Cosφ set
2 Q(U)
3 Cosφ (P)
8.1. Mode Q set

The inverter generates reactive power with a value proportional to the active power output. The percentage
value of reactive power is determined by changing the setting of parameter 12.37, whereby a positive value
means over-excitation (reactive power generation), while a negative under-excitation (reactive power
consumption).
8.2. Mode Cosφ set

The inverter generates reactive power by changing the value of the power factor cosφ. The size of the power
factor is determined by changing the setting of parameter 12.38, whereby a positive value means over-
excitation (reactive power generation), while a negative under-excitation (reactive power consumption).

Chapter 8. Inverter reactive power control
8.3. Mode Q(U)

The inverter generates reactive power as a function of the mains voltage value Q (U). In the Q (U) operating
mode, the control takes place according to the entered curve - Fig. 8.1. Control curve Q(U)
The inverter can be configured to start Q (U) control when the output power level exceeds the threshold of
parameter 12.48, and end when the output power drops below the threshold from parameter 12.49. When
12.49 <12.48 then the control switching system Q (U) shows hysteresis. Below the threshold, the inverter
does not generate reactive power.
The dynamics of reactive power value adjustment as a function of network voltage changes is determined by
the value of parameter 12.47. The inverter will regulate the value of reactive power with dynamics such as
the first order filter with a time constant of the value set in parameter 12.47. The individual points of the curve
are described in Table 8.2. Table of curve points Q (U)
Qmax= +48% Q
QuV2
12.40
QuV1
12.42 OV1 OV2
12.43 12.45
UV2 UV1
QoV1 12.39 12.41 U/Un
12.44
QoV2
12.46
Qmin= -48% ps300-21-1
Fig. 8.1. Control curve Q(U)
Table 8.2. Table of curve points Q (U)

Nr parametru Nazwa Opis
12.39 uV2 Voltage value for QuV2
12.40 QuV2 Reactive power at voltage uV2
12.41 uV1 Voltage value for QuV1
12.42 QuV1 Reactive power at voltage uV1
12.43 oV1 Voltage value for QoV1
12.44 QoV1 Reactive power at voltage oV1
12.45 oV2 Voltage value for QoV2
12.46 QoV2 Reactive power at oV2 voltage
12.47 Time filter A time constant value that specifies the rate of adjustment
12.48 Lock in power Power level for switching on the Q (U) control
12.49 Lock out power Power level to deactivate the Q (U) control

Chapter 8. Inverter reactive power control
8.4. Mode Cosφ(P)

The inverter generates reactive power by changing the value of the power factor cosφ as a function of the
output power value P. In the cosφ (P) operating mode, the control is carried out in accordance with the
introduced curve Fig. 8.2.
Cosφ
Cosφmax= +0.9
P1 P2 P2
12.50 12.52 12.54
Cosφ(P1)
12.51
P/Pn
Cosφ(P2)
12.53
Cosφ(P3)
12.55
Cosφmin= -0.9 ps300-22-1
Rys. 8.2. cosφ(P) control curve
The individual points of the curve are in Table 8.2.
Table 8.3. Table of points of the cosφ curve (P)

Nr parametru Nazwa Opis
12.50 P1 P1 power value
12.51 cosfi(P1) Setting cosφ for power P1

Chapter 9. Digital inputs and outputs
9. Digital inputs and outputs

The inverter has 5 digital inputs 5Vdc, R IN > 300Ω and 3 relay outputs with 2A switching power 230Vac. On
the digital inputs terminal block there is also 5Vdc voltage terminal available to operate digital inputs and any
external devices with a maximum current consumption of 50mA.
Fig. Hata: Başvuru kaynağı bulunamadı shows the view of the terminal blocks on the PS300 inverter series.
To view the status of digital inputs and outputs enter the I/O PREVIEW in the MAIN MENU of the inverter.
Jumpers Z1...Z4 should be

Z3 Z4 Z1 Z2
closed if the inverter is the last
one on communication bus.
K3 K2 K1
ETHERNET
5VDC
AGND
5VDC
GND
GND
GND
IN_A
DI_5
DI_3
DI_2
DI_4
DI_1
A(+)
A(+)
OuA
B(-)
B(-)
1234567 123 456 1234567 1234

Digital inputs Relay outputs
– for general uses
Ethernet network
- only for service
D1...D5 K1...K3
- only for service

(max. 2A
Modbus RTU
Analog In/Out
Modbus RTU
Output 5Vdc 230Vac)

purposes
(max. 50mA)
purposes
ps100-14-2-en
Fig. 9.1. Digital inputs and outputs terminals -PS300
By default the inverter uses three relay outputs K1, K2, K3 to adjust the frequency of the generator if the
wind turbine is equipped with a tail and digital input DI_2 for operating an optional anemometer (see chapter
9.2 Anemometer on page 34).

9.1. Generator load control

The PS100 inverter, in addition to the turbine run-out protection, is adapted to regulate the frequency of the
generator (and thus the power generated) by switching ON the dump load resistors.
Fig. 9.2. The principle of controlling the dump load resistors shows the principle of controlling the dump load
resistors.
fgen
10.3
t
TH
Switch ON Switch OFF
ps100-19-3-en electrical grid electrical grid
Fig. 9.2. The principle of controlling the dump load resistors
The inverter continuously measures the frequency and voltage of the generator, and compares them to the
saved settings in the inverter's memory (group 10).
To prevent the generator from detaching, use dump load resistors. Parameter 10.3 determines the frequency
threshold of the generator above which the resistors are switched ON for the braking time T H, in which the
frequency of the generator drops below the threshold value reduced o hysteresis specified in parameter
10.5, however not shorter than the time set in parameter 10.4.
Additionally the inverter can react to exceeding the voltage thresholds. Parameter 10.2 is used to determine
the voltage level that triggers the activation of load resistors.
In the event of any failure, the system switch ON the dump load resistors.
Table 9.1. Control of the dump load resistors - group 10 (service group, password protected)
No. Name Description
2 "U RMS gen. hamt. [V] Generator RMS voltage from which the "Resistors" load is connected
3 Gen. break. freq. [Hz] Generator frequency from which the "Resistors" load is attached
4 Min. gen. break [s] Minimum switching ON time of a dump load resistors
5 Break hist. off [%] Hysteresis specified in % in relation to the values given in paremeters
10.1 and 10.2

9.2. Anemometer
The inverter works with anemometer with open collector type (OC) output or reed relay output. The
maximum frequency must be less than 1 kHz. It is possible to get a supply voltage to anemometer from the
5Vdc output, provided that the maximum load current of 50mA is not exceeded. Fig. 9.3 shows the
connection diagram of the anemometer on the example of the Fardata NP-3.
In order to correctly measure the wind speed, it is necessary to enter wind speed [m/s] corresponding to 10
pulses / second in parameter 10.6. This value is given by the manufacturer of the anemometer (ex. 1.5). The
current wind speed is showed in par. 0.31.
2kΩ resistor PS300-WT

inside inverter PS300-H
5VDC
GND
DI_4
DI_3
DI_1
DI_5
DI_2
12345 67
VCC
OUT
GND
ps300-18-1-en
Anemometer NP-3
Fig. 9.3. Wiring diagram of the anemometer
9.3. Storm Protection
In our inverter we have a storm protection. Users are able to set dedicated parameters for the storm
protection. Storm protection system works through these parameters:
• P. 10.48 In this parameter users could set maximum velocity of wind for the storm protection
threshold.
• P. 10.49 In this parameter users could set time of storm protection threshold.
When the system detect above velocity than set, K3 contactor turning off and dump load is turning on. When
the set time up, storm protection getting deactivated and process repeats to check wind velocity. If wind
velocity still above of the storm protection threshold, system repeats same process.
9.4. Remote Output Stop Order
User could connect and use an external switch to control inverter. Switch must be connected to DI_1(6) and
5VDC sockets(7).
• When the switch is open; inverter works.
• When the switch is close; inverter stops, K3 contactor switching off, output relays switching off and if
the inverter is for the wind turbine, dump load is switching on.
PS300-WT
PS300-PV
PS300-H
5VDC
GND
DI_5
DI_4
DI_3
DI_2
DI_1
1234567
ps300-25.1
S
Fig. 9.4.
Remote stop of the inverter

Chapter 10. Communication parameters setting
10. Communication parameters setting

The PS300 inverter is equipped with the RS-485 communication interface and the Ethernet port. This allows
the inverter to be controlled by a computer or an external controller. Basic features and the possibilities are:
RS-485:
• communication speed: 2400, 4800, 9600, 19200, 38400, 57600, 115200 bit/s,
• 8 data bits, lack of parity control; 1 or 2 stop bits,
• transfer protocol: MODBUS mode RTU,
• checking of transfer validity by CRC,
• ModBus address (default 1),
• support of MODBUS commands: command 3 - “read the register” - allows to read individual
registers from the inverter or block of up to 123 registers. Command 6 - “register write” -
allow to write to individual register in the inverter. Command 16 - “n register write” - allow to
write block of up to 123 register to inverter.
Ethernet:
• transmission protocol: MODBUS,
• default port of communication: 502,
• internal web page with basic information
• ModBus address (default 1),
• support of MODBUS commands: command 3 - “read the register” - allows to read individual
registers from the converter or block of up to 123 registers. Command 6 - “register write” -
allow to write to individual register in the converter. Command 16 - “n register write” - allow
to write block of up to 123 register to inverter.
All operations are based on the MODBUS RTU / TCP protocol commands 3 and 6 and they are described in
publications on MODBUS protocol.
Addressing is done by querying the 4xxyy parameter, where xx - group number, yy - parameter number. For
example, if you want to read parameter 0.3 - the frequency of the network, you should inquire about the
address 40003. Modification of the parameter using command 6 is only possible after unlocking access to
password protected groups – see chapter 6.2 Operating the control panel using buttons on page 23
Network cable requirements:

The cable length and quality affect the quality of the signal. Observe the following cable
requirements.
 Cable type: 100BaseTx
 Cable category: minimum CAT5e
 Plug type: RJ45 of Cat5, Cat5e or higher
 Shielding: SF/UTP, S/UTP, SF/FTP or S/FTP
 Number of insulated conductor pairs and insulated conductor cross-section: at least 2 x 2 x 0.22mm²
 Maximum cable length between two nodes when using patch cables: 50 m (164 ft)
 Maximum cable length between two nodes when using installation cables: 100 m (328 ft)
 UV-resistant for outdoor use.

Chapter 10. Communication parameters setting
10.1. Connecting the inverter to the Internet

Parameters configuring the connection of the inverter to the Internet are presented in Table 10.1. The
inverter can work with dynamic DHCP address assignment enabled or disabled. The changes are made in
the Settings → Communication → Ethernet menu:
a. DHCP enabled: configuration parameters (IP address, subnet mask and gateway address)
will be assigned automatically by an external DHCP server.
b. DHCP disabled: parameters configuring the inverter to work on the Internet must be entered
manually:
IP: IP address
SubN: subnet mask address
GW: gateway address
Current settings of the parameters configuring the inverter's work in the Internet are also available for
reading in 0 group of parameters (menu: SETTINGS → PARAMETERS) - Table 10.1.
Table 10.1. Control of the dump load resistors - group 10 (service group, password protected)
Parameter No Parameter Access level Description
name
0.80 Eth. IP 1 O IP Address
0.84 Eth. MASK 1 O Subnet Mask
0.88 Eth. GW 1 O Gateway
10.2. Communication via Json file

Inverter parameters can be presented in JSON file format and used for data presentation in other monitoring
systems. To obtain data in JSON format, send a request to the inverter in the form:
htttp://Inverter_ip_address/command.
Below is a list of available commands:
http://IP_Address/dataNow – realtime inverter parameter values read from group 0,
http://IP_Address/plotNow – data for the chart from today,
http://IP_Address/plotPrev – data for the chart from the previous day.
Data available on the charts are recorded at 15-minute intervals.
Due to the necessity of querying the inverter's ip address, it is recommended to set a static IP address (see
chapter 10.1 Connecting the inverter to the Internet page 36).

Chapter 11. Inverter Monitoring System via “www.inverters.pl”
11. Inverter Monitoring System via “www.inverters.pl”
11.1. Creating an user account
When you enter the www.inverters.pl web site,

on the main page click to “Zarejestruj sie” and:
1-Define an username.
2-Enter e-mail address.
3-Define a password.
4-Re-enter password.
5-Click to “załóż konto”
After creating an account go back to main page

for signing in.
11.2. Login
1-Enter user name.

2-Enter password.
3-For log-in click to “zaloguj”
11.3. Adding the inverter to the system to

monitor its operation
Adding inverters to the system for remote
monitoring;
Click to “dodaj urzadzenie”
1 - Enter the serial number(Nr seryjny) of the

device.
2 - Enter the hash admin numbers.
3 - For register click to “Zarejestruj”
Note: Serial number and hash admin numbers will be attached on the user manual.
After whole processes users are able to monitoring their devices via www.inverters.pl web site.


1 On this label users can see registered inverters and when you click one of them you can see details of
inverter on the main screen.
2 Users can check any previous specific date parameters by entering date and clicking to
“wyswietl dane z dnia”
3 Users can check last week parameter chart by clicking to “ostatni tydzien”
4 Users can check any monthly chartered datas. To see montly chart by “+” and “-“ buttons can set month
and click to upper button “miesiac …”
5 Users can check any yearly chartered datas. To see yearly chart by “+” and “-“ buttons can set month
and click to upper button “rok …”
6 Clicking by “moc calkowita” users could see total power chart
7 Clicking by “string 1” users could see power chart of string 1
10 Clicking by “pred. wiatru” users could see wind speed chart
11 Clicking by “F turbiny” users could see frequency of wind turbine chart
12 From first run-up to present total energy generation
13 Present wind speed
14 Present voltage value of input 1
15 Present current value of input 1
16 Present power value of input 1
17 Present voltage value of input 2
18 Present current value of input 2
19 Present power value of input 2
20 Present frequency of wind turbine
21 Energy on a selected day
22 To register new inverter
11.4. Account Settings
1 - In this menu users can change account password.

2 - In this menu users replace name of inverter. To change the name of inverter user should choose related
inverter and insert the box new name than click to save button “zmien zaznaczone”.
3 - Nazwy grup - users can see and manage created inverter groups.

4 - Tworzenie grup: users can create a group and add inverters to the group. To create a group of inverters
user should choose related inverters and insert the box group name than click to save button “utworz
grupe”.
1-Here(usuwanie grup) users could delete group.

2-Here(lokalizacja) users could change the localization details of inverters. To change the localization of
inverter user should choose related inverter and insert the box new localization than click to save button
“zmien zaznaczone”.

Chapter 12. Configuration of Parameters
12. Configuration of Parameters

12.1. Inverter status parameters – group 0
Group 0 contains parameters that inform about the current state of the device. They are read-only. These are
public parameters - access to them is not password protected.
Access
level
1 Produced energy [kWh] O Total produced energy
2 Run time [h] O Total working time
3 Grid power [W] O Output power
6 Grid freq [Hz] O Grid frequency
9 Grid volt. L1 [V] O L1 phase grid voltage
12 Grid curr. L1 [A] O L1 phase grid current
20 Input 1 power [W] O Input 1 power
21 Input 1 volt [V] O Input 1 DC voltage
22 Input 1 curr [A] O Input 1 DC current
23 Input 2 power [W] O Input 2 power
24 Input 2 volt [V] O Input 2 DC voltage (in inverters with synchronous generator
input the AC input voltage first is rectified and the
measurement is done after it)
25 Input 2 curr [A] O Input 2 DC current (in inverters with synchronous generator
input the AC input current first is rectified and the
measurement is done after it)
26 Input 3 power [W] O Service parameter
27 Input 3 volt [V] O Service parameter
28 Input 3 curr [A] O Service parameter
30 Turbine freq [Hz] O Turbine generator frequency
31 Wind speed [m/s] O Wind speed
32 Resistance [kΩ] O Insulation resistance
33 Leakage current [mA] O Leakage current
40 Charger volt. [V] O Charger voltage input
41 Charger curr. [A] O Charger DC current input
42 Charger temp. [°C] O Battery temperature
43 Charger t. mod [°C] O Charger internal transistor module temperature
44 Charger fault O Battery charger fault code
50 UDC [V] O DC link circuit voltage
51 UDC 1 [V] O DC link 1 circuit voltage
52 UDC 2 [V] O DC link 2 circuit voltage
53 Radiator temp. [°C] O Heatsink temperature

Access
level
54 Module temp. [°C] O Module temperature
60 Status O Inverter status:
0: Stop, 1: Run
61 Version ctr1 O Software version (communication)
62 Version output O Software version (control)
63 Version charger O Software version (charger module)
64 Revision ctrl. O Software revision (communication)
70 Event 1 O Last event code
71 Event 2 O Previous event code
79 Event 10 O Oldest event code
80 Eth. IP 1 O IP address
84 Eth. MASK 1 O Subnet mask
88 Eth. GW 1 O Default gateway
92 Eth. State O Ethernet connection state
97 EG L1 O Instantaneous power in the phase L1 measured by the Energy
Guard module
Guard module
Guard module

12.2. Inverter configuration parameters

Parameters from groups 1,2, ... affect the correct operation of the inverter, therefore access to them is
protected by a code, so that an unauthorized person cannot change the parameter settings.
Access code: 123321.
GROUP 1 – Grid module
Access
level
1 Work mode 2 Work mode
0 - Off grid
1 - On grid
2 - Auto On/Off grid
3 - test mode
4 - Coolmar mode
5 - Off-grid MPPT
2 Output volt. [V] 1 Output voltage
3 Output freq. [Hz] 1 Output frequency
10 Disconnect volt. [V] 1 DC input PV voltage or rectified AC input generator voltage, below
which the countdown time will start (time is set in par. 1.11). This
feature is used to reduce energy consumption in "On-grid" mode.
11 Disconnect time [V] 1 Time after which the inverter will be disconnected from the power
supply to reduce power consumption, in case where the DC input
voltage falls below the level set in par. 1.10
12 High curr. [A] 2 High output current failure threshold
13 Limit current [A] 1 Output current limit
20 Autostart volt. [V] 1 DC input PV voltage or rectified AC input generator voltage over
which you can start to load the generator and execute the START
command.
21 Autostop volt. [V] 1 DC input PV voltage or rectified AC input generator voltage, below
which the inverter will stop.
22 Autostart 2 Auto-start setting:
0 : manual – see par. 1.23
1 : automatic
23 Enable start 2 Manual START/STOP command
24 Output contact. 2 Switching ON output relays
25 Autorestart 2 ON (1) / OFF (0):
automatic failure code reset if it occurs
26 Fault reset 2 Manual fault reset, use the sequence:
0 → (wait 3 seconds) → 1 → (wait 3 seconds) → 0
30 kp curr out 2 Setting the proportional part of the output current regulator
31 Ki curr out 2 Setting of the integral part of the output current regulator
32 Udc ref 2 AcR voltage reference
33 Kp reg user 2 Setting the proportional part of the DC link voltage regulator
34 Ti reg user 2 Setting of the integral part of the DC link voltage regulator
40 Auto limit curr 2 AcR current limiting method above the Udc threshold ref
41 Modulation 2 Modulation

Access
level
42 Wind simul. 2 I/f curve simulation based on Uwej
43 Batt. Work time [min] 2 Battery work time
44 Alfa min 2 MPPT parameter
45 Alfa max 2 MPPT parameter
GROUP 2 – Input 1 : PV1
Access
level
1 Uin autostop [V] 1 Voltage at which Input 1 boost switches Off
2 Uref [V] 2 Boost reference voltage
3 Kp u 2 Proportional part of the boost voltage regulator
4 Ti u 2 Integral part of the boost voltage regulator
5 Kp i 2 Proportional part of the boost current regulator
6 ti i 2 Setting of the integral part of the boost current regulator
7 PWM [%] 2 Boost fill
8 Max PWM [%] 2 Maximum boost fill
9 DC curr limit [A] 1 Input current limit
10 MPPT type 2 Type of MPPT algorithm
11 Enable string 2 Permission for string operation
12 Stala filtr user [ms] 2 Unused
13 Sala filtr prad [ms] 2 Constant current filtering
14 Czas ramp iref 2 Current ramp time at first start-up
GROUP 3 – Input 2 : PV2 / WT
Access
level
8 Max pwm [%] 2 Maximum boost fill
9 Dc curr limit [A] 2 Input current limit
10 Mppt type 2 Type of MPPT algorithm


30 Prad nom. turb. [A] 1 Nominal generator DC current
31 Czest. 1 [Hz] 1 Frequency of point 1of the load characteristic
32 Prad I1 [%] 1 Value of load current in point 1 given as % of nominal current
... ... 1 ...
61 Czest. 16 [Hz] 1 Frequency of point 16 of the load characteristic
62 Prad I16 [%] 1 Value of load current in point 16 given as % of nominal current
GROUP 4 – Input 3
Access
level
8 Max pwm [%] 2 Maximum boost fill
9 Dc curr limit [A] 1 Input current limit
10 Mppt type 2 Type of MPPT algorithm
GROUP 5 – Battery charger module
Access
level
1 UDC on break [V] 1 DC link voltage at which the charger brake turns on
2 UDC on charge [V] 2 DC Link voltage at which the charger starts charging
3 UDC off charge [V] 2 DC link voltage at which the charger module begins to discharge
4 Curr. Limit char [A] 1 Charging current limit
5 Curr. Limit dos [A] 1 Charging current limit
6 Umax battery [V] 1 Maximum battery voltage
7 Umin battery [V] 1 Minimal battery voltage
8 Tmax battery [°C] 1 Maximum battery temperature
9 Block run 1 Module charger operation lock
0 → charger module is working 1 → charger module is not working
10 Un 1 Nominal battery voltage

11 Delta Ibat 1 Battery discharge threshold at which their emergency charging

begins. The inverter first tries to get energy from a renewable energy
source (solar panels, wind generator), but if the amount of electricity
generated is too small, then depending on the operating mode:
a. on-grid: for charging the battery it will draw energy from the power
grid,
b. off-grid: will block the possibility of further discharge of the
connected battery.
12 Power limit EG 1 Load limit for operation with Energy Guard.
Minus sign means the possibility of giving the electric energy to the
grid.
GROUP 10 – Service parameters
Access
level
1 SPI 2 Parameter to view through the SPI adapter
2 U RMS gen. Ham [V] 2 Generator RMS voltage at which the "Resistors" load is turned On
(break contacts 8A / 250 Vac)
3 Czest. Gen. ham 1 Generator frequency at which the "Resistors" load is turned On
[Hz] (break contacts 8A / 250 Vac)
4 Min czas ham. [s] 1 Minimum "Resistors" load turn On time
5 Hist. ham. Off [%] 1 Hysteresis specified in% in relation to the values given in
parameters 2 and 3, giving the load release thresholds
6 Metrow / 10imp [m/s] 1 Wind speed corresponding to 10 pulses from the anemometer
7 Ogon freq max [Hz] 2 Generator frequency above which K2 relay is switched On
8 Ogon freq min [Hz] 2 Generator frequency below which K1 relay is switched On
9 Ogon freq opt [Hz] 2 Generator frequency above which the relay K1 or K2 is switched Off
10 Ogon Urms max [V] 2 The voltage above which the K2 relay is switched On and the K1
relay switched Off, if necessary
11 Ogon t1 [s] 2 The minimum activation time of the K2 relay
12 Load default 2 Loading default parameters
13 Power hysteresis 2 MPPT parameter
14 Global mppt scan 1 Time between global MPPT scans; 0 min. means disable global
MPPT
15 windType 2 Algorithm of wind input loading depending on wind speed
16 antiIsland 2 Anti-island protection
17 Ugadna start b 2 Energy guard parameter
18 Uganda start ni 2 Energy guard parameter
19 Uganda start pea 2 Energy guard parameter
20 Erase all plots 2 Deleting all charts
21 Set 0-999W 2 Service parameter
22 Set 0-999kW 2 Service parameter
23 Set 0-999MW 2 Service parameter

24 Set power =0 2 Service parameter

25 Set run day 2 Service parameter
26 Set run hour 2 Service parameter
27 Set run=0 2 Service parameter
28 Erase events 2 Deleting failure logs
29 Phase guard 1 Phase determination when using Energy guard
30 MAC 1 2 MAC address
36 Inv. Name 1 2 Serial number of inverter
42 Inv. Year 1 2 Production year of the inverter
43 Inv. Year 2 2 Production year of the inverter
44 Erase PAR&ITR 2 Deleting internal parameters settings of the inverter
45 Ogon fmax stop 2 Generator frequency above which K2 relay is switched On – during
initial grid parameters measurement
46 Ogon fmin stop 2 Generator frequency below which K1 relay is switched On – during
initial grid parameters measurement
47 Ogon Fopt stop 2 Generator frequency above which the relay K1 or K2 is switched Off
– during initial grid parameters measurement
48 Wysoki wiatr próg 1 Wind speed that turns On the storm protection
49 Wysoki wiatr czas 1 Time duration of storm protection
50 Language 1 Language selection
GROUP 11 – Grid parameters
Access
level
1 OverVoltageSt2 2 Overvoltage protection threshold: level 2 (instantaneous)
2 OverVoltageSt1 2 Overvoltage protection threshold: level 1 (delayed)
3 UnderVoltage 2 Undervoltage protection threshold
4 OverFreq 2 Overfrequency protection threshold
5 UnderFreq 2 Inderfrequency protection threshold
6 OverFreqTime 2 Delay time of the overfrequency protection threshold

7 UnderFreqTime 2 Delay time of the underfrequency protection threshold

8 OverVoltageSt2Time 2 Delay time of the overvoltage protection threshold level 2
(instantaneous)
9 OverVoltageSt1Time 2 Delay time of the overvoltage protection threshold level 1 (delayed)
10 UnderVoltageTime 2 Delay time of the undervoltage protection threshold
11 MinFReconnect 2 Minimum grid frequency when reconnecting
12 MaxFReconnect 2 Maximum grid frequency when reconnecting
13 MinUReconnect 2 Minimum grid voltage when reconnecting
14 MaxUReconnect 2 Maximum grid voltage when reconnecting
15 MinFStart 2 Minimum grid frequency when starting work
16 MaxFStart 2 Maximum grid frequency when starting work
17 MinUStart 2 Minimum grid voltage when starting work
18 MaxUStart 2 Maximum grid voltage when starting work
19 GridObservationTime 2 Time of measurement of grid parameters before starting work
20 Reconn.PowerRamp 2 Time ramp after reconnection – in this time the inverter output power
limit increases from 0 to the nominal power
21 StartingPowerRamp 2 Time ramp after starting work – in this time the inverter output power
limit increases from 0 to the nominal power
22 ReducePowerFreq 2 Network frequency threshold from which the inverter output power
limit begins to be restricted
23 OverFreqDroop 2 The percentage decrease of the inverter output power limit
according to the increase of the grid frequency above the response
threshold
24 CosPhi 2 Cosφ of the output current and type of inverter reactive power
(capacitive / inductive)
25 Rocof Ramp 2 Rocof protection value

GROUP 12 – EN50549 Grid parameters
Access Default Setting

level setting range
1 Rated network voltage 2 Rated voltage 230 V 100-400V
for protection
2 Rated frequency for 2 Rated frequency 50 Hz 50Hz, 60Hz
protection
3 Nominal Power Rated power Pn -
4 UnderVoltage St1 2 Threshold undervoltage protection 0.85 0.2..1.00
threshold 1
5 UnderVoltage St1 Time 2 Threshold undervoltage protection 1.2 s 0.1..100.0 s
threshold 1 - time
6 UnderVoltage St2 2 Threshold undervoltage protection 0.4 0.20..1.00
threshold 2
7 UnderVoltage St2 Time 2 Threshold undervoltage protection 0.20 s 0.10..5.00 s
threshold 2 - time (ch:0.05s)
8 OverVoltageSt1 2 Overvoltage protection threshold - 1.15 1.00..1.20
level 1 (instantaneous)
9 OverVoltageSt1Time 2 Overvoltage protection tripping time 0.1 s 0.1..100.0 s
- level 1
10 OverVoltageSt2 2 Overvoltage protection threshold - 1.15 1.00..1.30
level 2 (instantaneous)
11 OverVoltageSt2Time 2 Overvoltage protection tripping time 0.10 s 0.10..5.00 s
- level 2 (ch.: 0.05s)
12 OverVoltage10min 2 10-minute overvoltage protection 1.10 1.00..1.15
threshold (delayed)
13 Enable ST1 Under/Over Selection of active security 0 0, 1, 2, 3
Freq thresholds:
0 – St2
1 – St1
2 – DI4
3 – Remote
14 UnderFreqSt1A 2 Threshold underfrequency 47.5 Hz 47.0..50.0 Hz
protection 1
15 UnderFreqTimeSt1A 2 Delay time of the underfrequency 0.1 s 0.1..100.0 s
protection tripping 1
16 UnderFreqSt2A 2 Threshold underfrequency 47.5 Hz 47.0..50.0 Hz
protection 2
17 UnderFreqTimeSt2A 2 Delay time of the underfrequency 0.10 s 0.10..5.00 s
protection tripping 2 (ch.: 0.05s)
...
22 OverFreq St1 2 Overfrequency protection threshold 52.0 Hz 50.0..52.0 Hz

St1
23 OverFreqTimeSt1 2 Delay time of the overfrequency 0.1 s 0.1..100.0 s
protection St1
24 OverFreq St2 2 Overfrequency protection threshold 52.0 Hz 50.0..52.0 Hz
St2
25 OverFreqTimeSt2 2 Delay time of overfrequency 0.10 s 0.10..5.00 s
protection St2 (ch.: 0.05s)


level setting range
LFSM-U
26 Under Treshold freq f1 2 Network frequency threshold below 49.8 Hz 46.0..49.8 Hz
which the output power begins to
increase 46.0 function
46.0 - Disables functions is not active
27 UnderFreqDroop 2 The percentage increase of the 5% 2..12%
inverter output power limit with the
decrease of the grid frequency
below the response threshold
28 UnderFreq PowerRef 2 Reference when the threshold is Pmax 0 - Pmax
exceeded 1 - Pm
PM - power at the moment of
exceeding
Pmax - nominal power of the device
29 UnderFreq IntentDelay 2 Mode delay LFSM-U 0 0.0...2.0s
LFSM-O
30 OverFreq Treshold freq 2 The grid frequency threshold above 50.2 Hz 50.2..52.0 Hz
f1 which the inverter output power
begins to be limited
52.0-Disables features
31 OverFreqDroop 2 The percentage decrease of the 5% 2..12%
inverter output power limit with the
increase of the grid frequency above
the response threshold
32 Over Freq PowerRef Reference when the threshold is PM 0 – Pmax
exceeded 1 – Pm
PM-power when exceeded
Pmax - nominal power of the device
33 OverFreq IntentDelay 2 Mode delay LFSM-O 0s 0.0..2.0 s
34 Fstop 2 Threshold for deactivation of a 52.0 Hz 50.0.. 52.0 Hz
latched limit in LFSM-O mode
> = par. 12.22 deactivates latching
the limit
35 UF-Deactivation Time 2 Delay limit reset function 0s 0.0..2.0 s
Fstop
Control
36 Control Mode 2 Reactive power generation control 0 - Qset
mode 1 - cos φ set
2 - Q(U)
3 - cosφ(P)
37 Q set 2 Reactive power setting as a 0 -48..+48 %
percentage of the device's active
power for Par.12.36 = 0
38 Cosfi set 2 setting cos φ for Par.12.36=1 0 -0.9..0.9
39 uV2 2 Voltage for QuV1 Par.12.36=2 0.92 0.80..1.00
40 QuV2 2 Q for uV1 Par.12.28=2 48% -48..48 %
41 uV1 2 Voltage for QuV1 Par.12.28=2 0.94 0.90..1.00
42 QuV1 2 Q for uV1 Par.12.28=2 0 -48..48 %
43 oV1 2 Voltage for QoV1 Par.12.28=2 1.06 1.00..1.15
44 QoV1 2 Q for oV1 Par.12.28=2 0 -48..48 %


level setting range
45 oV2 2 Voltage for QoV2 Par.12.28=2 1.08 1.00..1.15
46 QoV2 2 Q for oV2 Par.12.28=2 -48% -48..48 %
47 Time filter 2 Regulation filter time constant 10 s 3..60 s
according to Q (U) Par.12.28=2
48 Lock in power 2 Power level for switching on the Q 0 0..20 %
(U) control Par.12.28=2
49 Lock out power 2 Power level to deactivate the Q (U) 0 0..20 %
control Par.12.28=2
50 P1 2 Power value P1 of the cosφ 0.20 0.01..1.00
characteristic (P) Par.12.28=3
51 cosfi(P1) 2 Cosφ setting for power P1 of the 1.00 -0.9..0.9
cosφ characteristic (P) Par.12.28=3
52 P2 2 P2 value of the cosφ characteristic 0.50 0.01..1.00
(P) Par.12.28=3
53 cosfi(P2) 2 Cosφ setting for power P2 of the 1.00 -0.9..0.9
54 P3 2 Power value P3 of the cosφ 1.0 0.01..1.00
characteristic (P) Par.12.28=3
55 Cosfi (P3) 2 Cosφ setting for power P3 of the -0.9 -0.9..0.9
56 Min F Reconnect 2 Minimum network frequency when 49.5 Hz 47.0..50.0 Hz
reconnecting
57 MaxFReconnect 2 Maximum grid frequency when 50.2 Hz 50.0..52.0 Hz
reconnecting
58 MinUReconnect 2 Minimum grid voltage when 85% 50..100 %
reconnecting
59 MaxUReconnect 2 Maximum grid voltage when 110% 100..120 %
reconnecting
60 Grid Observation time 2 Observation time before 60 s 10..600 s
Reconnect reconnecting to the grid
61 Reconn.PowerRamp 2 Steep power limit rise after 10 %/min 6..6000 %/min
reconnection
62 MinFStart 2 Minimum grid frequency at the start 49.5 Hz 47.0..50.0 Hz
of work
63 MaxFStart 2 Maximum grid frequency when 50.1 Hz 50.0..52.0 Hz
starting work
64 MinUStart 2 Minimum grid voltage when starting 85% 50..100 %
work
65 MaxUStart 2 Maximum grid voltage when starting 110% 100..120 %
work
66 GridObservationTime 2 Time of measurement of the 60 s 10..600 s
electrical grid parameters before
starting work
67 Start.PowerRamp 2 Steep rise of the power limit after the Disable 6..6000 %/min
system starts
68 Rocof Ramp 2 Rocof collateral value 2.5 0.0..3.0
Hz/min Hz/min
69 Rocof Time 2 Rocof security time constant 0.10 s 0.10..1.00 s
(ch.:0.05s)

Chapter 13. Faults
13. Faults
The occurrence of the fault is indicated by the red diode lighting up (pic. 6.1). The current fault number
can be read in parameter 0.60. Previous failure number is stored in par. 0.22. Table 13.1 lists the numbers of
failures with their descriptions.
After a cause that could damage the inverter, the inverter goes into a state of failure. Depending on the
parameter setting 1.25:
a) par. 1.25 „Autorestart” = 0 (disabled): the red LED will light up and the inverter will remain in a fault
state until it is erased by a user,
b) par. 1.25 „Autorestart” = 1 (enabled): the inverter will try to resume itself.
Explanation: the inverter after 10 seconds will automatically delete an error message and try to resume
the operation. In the situation when the same failure repeats three times, the inverter will go into fault state,
remain in it until it is erased by a user and the red LED will be lighting up continuously on the display.
Table 13.1. List of fault codes

Fault
Fault name Fault description How to fix it
No.
0 No fault The system is working -
properly.
1 Too high The heat sink temperature Wait for the device to cool down.
temperature exceeded 85 ºC.
2 Damaged Indications from the Contact the service.
temperature sensor temperature sensor are
incorrect
10 CRC Error Invalid internal memory Upload default parameters, contact
checksum. with service.
11 No ADC No measurement from ADC Contact the service.
measurement transducer.
20 Earthing: too high Too high leakage current Check the correct connection of the system.
leakage current.
30 High Udc Too high voltage on the DC 1. Check the electrical connection
link capacitors. configuration of the solar panels for output
voltage (number of panels in series)
2. Check the connection of the braking
resistor when using a synchronous generator.
31 High U_IN1 Too high voltage at input 1. 1.Check the electrical connection
configuration of the solar panels for output
voltage (number of panels in series).
32 High U_IN2 Too high voltage at input 2. 1. Check the electrical connection
configuration of the solar panels for output
voltage (number of panels in series)
2. Check the connection of the braking
36 Input voltage ripples Too big ripples in the input 1.Check the correct connection of the
voltage installation.
2.Check the value of phase-to-phase
voltages in the generator.
37 Low Udc Too low voltage on the DC-link Check if the power of the energy sources is
capacitors. sufficient or higher than the power of loads
connected to the inverter.
38 High Udc - Too high voltage on the DC link 1. Check the configuration of electrical
hardware failure capacitors. connection of photovoltaic panels (too many PV
panels in series connection)
2. Check the connection of the dump load
39 No symmetry of Incorrect DC link voltages Check the installation for earth faults.
Udc voltage

Chapter 13. Faults
Fault
No.
50 Short circuit - Hardware protection has Check the connection of the power wires.
hardware failure recorded the occurrence of
transistor short-circuits.
60 High current - The amplitude of current 1. Check the input current measurement and
hardware failure drawn from sources or mains the voltage measurement in the DC-link circuit.
current has reached a value 2. Check the reference voltage in the DC-link
exceeding the limit. circuit.
61 High current on The amplitude of the input 1. Check the input current measurement and
input 1 current at input 1 has exceeded the voltage measurement in the DC-link circuit.
the limit. 2. Check the reference voltage in the DC-link
circuit.
62 High current on The amplitude of the input 1. Check the input current measurement and
input 2 current at input 2 has exceeded the voltage measurement in the DC-link circuit.
the limit. 2. Check the reference voltage in the DC-link
circuit.
65 Too high The amplitude of the current 1. Check the input current measurement and
output current fed into the network has the voltage measurement in the DC-link circuit.
reached a value exceeding 2. Check the reference voltage in the DC-link
the limit. circuit.
66 Overload Long-term output current 1. Check if the power of the connected loads
above nominal current. does not exceed the inverter power.
2. Check the cosφ of the installed loads.
67 Output voltage dip The value of the generated 1. Check that the power of the loads during
voltage has dropped below the their start-up is not greater than 150% of the
threshold. inverter's rated power.
70 Varistor failure Failure of the varistors has Contact the service.
been detected.
71 Low input 1 Too low resistance was 1. Check the installation wires.
resistance detected between 2. Measure the resistance of the installation
input 1 and PE. poles relative to PE.
72 Low input 2 Too low resistance was 1. Check the installation wires.
resistance detected between 2. Measure the resistance of the installation
input 2 and PE. poles relative to PE.
73 Low -DC resistance Too low resistance was 1. Check the installation wires.
detected between 2. Measure the resistance of the installation
i-DC and PE. poles relative to PE.
80 Timeout Exceeding the response time in 1. Check the connection of communication
the internal communication bus wires inside the inverter.
of the inverter. 2. In case of frequent failures contact the
service.
81 Communication error 1. Check the connection of communication
Incorrect data in the internal
wires inside the inverter.
communication bus of the
2. In case of frequent failures contact the
inverter. service.
82 System reset Internal processor reset. In the event of frequent malfunctions, contact
the service.
90 ROCOF error The electric network is not 1. Make sure that the electrical network is
connected to the device - anti- connected.
spy protection. 2. In the event of frequent false failures of
ROCOF, the quality of the electricity at the
connection point should be checked.
91 Low electric grid The electric grid frequency is 1. Check the electrical grid frequency.
frequency – work too low or inverter 2. In case of frequent failures contact the
state measurement module is service.
damaged

Chapter 13. Faults
Fault
No.
92 High electric grid The electric grid frequency is 1. Check the electrical grid frequency.
frequency – work too high or inverter 2. In case of frequent failures contact the
state measurement module is service.
damaged
93 Low electric grid The electric grid RMS voltage is
voltage – work state too low or inverter
measurement module is
damaged. 1. Check the electrical grid frequency.
94 High electric grid The electric grid RMS voltage is service.
voltage – work state too high or inverter
measurement module is
damaged.
95 Uref limit Electrical grid is no connected 1. Check the electrical grid wires, protection
to the inverter – anty-islanding fuses, and be be sure main switch power is ON.
protection
96 Low electrical grid The frequency of the electrical
frequency – grid measured before the
monitoring state inverter starts working is too
low or the inverter measuring
module is damaged. 1. Check the electrical grid frequency.
97 High electrical grid The frequency of the electrical service.
frequency – grid measured before the
monitoring state inverter starts working is too
high or the inverter measuring
module is damaged.
98 Low electric grid The electric grid RMS voltage is
voltage – monitoring too low or inverter
state measurement module is
damaged. 1. Check the electrical grid voltage.
99 High electric grid The electric grid RMS voltage is service.
voltage – monitoring too high or inverter
state measurement module is
damaged.
911 Low network The grid quality during
frequency - ST2 inverter operation does not Check mains voltage frequency.
operation meet standards or the inverter
921 High network measuring system has been In case of repeated failure please contact the
frequency - ST2 damaged. ST2 range. service.
operation
931 Low network voltage Low RMS network voltage
phase U ST1 during inverter operation
-phase U
Check the network voltage.
phase V ST1 during inverter operation
In case of repeated failure please contact the
-phase V
service.
phase W ST1 during inverter operation
-phase W
930 Low ST2 network Low RMS network voltage
voltage during inverter operation Check the network voltage.
934 Low network voltage Low RMS network voltage In case of repeated failure please contact the
phase U ST2 during inverter operation service.
-phase U
935 Low network voltage Low RMS network voltage Check the network voltage.
phase V ST2 during inverter operation
-phase V In case of repeated failure please contact the

Chapter 13. Faults
Fault
No.
phase W ST2 during inverter operation service.
-phase W
941 High network High RMS network voltage
voltage phase U during inverter operation
ST1 -phase U
voltage phase V during inverter operation
ST1 -phase V
service.
voltage phase W during inverter operation
ST1 -phase W
944 High mains voltage High RMS grid voltage with an
10 minutes average of 10 minutes during
phase U inverter operation - U phase
phase V inverter operation - V phase
service.
phase W inverter operation - W phase
950 High voltage of High RMS network voltage
network ST2 during inverter operation
951 High voltage High RMS network voltage
network phase U during inverter operation Check the network voltage.
ST2 -phase U
952 High voltage High RMS network voltage In case of repeated failure please contact the
network phase V during inverter operation service.
ST2 -phase V
953 High voltage High RMS network voltage
network phase W during inverter operation
ST2 -phase W
Note: The inverter monitors the electrical grid for 60 seconds before starting work. After a failure with
incorrect electrical parameters in the grid (fault 91 ÷ 94) or failure of the grid current controller (fault 95), the
inverter also monitors the electrical grid for 60 seconds before restarting.

Chapter 14. Ordering information
14. Ordering information
PS300 - /
1 2 3
1. Input type:
PV – photovoltaic
WT – permanent magnet generator: one AC input
H – hybrid
2. Built-in battery charger module:
„without sign” – PS300 inverter does not have a version with a charger module
3. Power of the inverter:
3 kW
5 kW
8 kW
10 kW
15. Warranty conditions

The system is covered by the warranty in accordance with the information contained in the Warranty Card.
PS300-user -manual-en_v2.1.0, 27/05/20

Chapter 16. EU Declaration Of Conformity
16. EU Declaration Of Conformity

NOTES
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Zakład Energoelektroniki TWERD Sp. z o.o.
(TWERD Power Electronics Ltd.)
ul. Aleksandrowska 28-30
87-100 Toruń, Poland
tel: +48 56 654 60 91

e-mail: twerd@twerd.pl
www.twerd.pl
Design - Production - Service

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Renewable Energy Sources

GROUP 11 – Grid parameters.............................................................................................................. 47

4 PS300 – User’s manual

The offer includes the following types of inverters:

• PS300-WT/3kW, PS300-WT/5kW, PS300-WT/8kW, PS300-WT/10kW - AC voltage inverters

• current inverter input and output voltages and currents,

• from the mains side:

PS300 – User’s manual 5

2. Conditions of safe operation

RISK OF ELECTRIC SHOCK! HOT SURFACE!

2.2. Basic rules

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• Periodically, you should check:

2.3. Protection against electric shock

2.4. Operation list after receiving the device

2.5. Environmental conditions

Table 2.1. Installation, warehousing and transport conditions

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3.2. Mechanical dimensions and weight

Fig.3.1. Mechanical dimensions of the inverter

Weight of the inverter with mounting frame: 33 kg.

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3.3. Inverter view from the connectors side

Fig.3.2. Inverter view from the connectors side

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4. Preparing for installation

4.2. Environmental condition

4.4. Usage of residual current devices

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4.5. Power line connector

Fig.4.1. View of the mains connector

Fig.4.2. Connector preparation

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Fig. 4.3. Closing the connector

Fig. 4.4. Connecting the connector to the inverter

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Fig. 4.5. Unlocking and separating the connector

4.6. Installation position

Fig. 4.6. Wall mounting

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4.7. Power circuit terminals

Table 4.1. Internal DC and power supply lines fuses values

Internal DC protection fuse Fuse protection from

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DO NOT MAKE ANY CONNECTIONS WHEN AN ELECTRICAL VOLTAGE IS

THE VOLTAGE SOURCE MAY BE BETWEEN OTHER:

PV PANELS, GENERATOR, ELECTRIC NETWORK, BATTERIES, EXTERNAL

INSTALLATION, MAINTENANCE AND MAINTENANCE OF INVERTER TECHNICAL

INCORRECT INSTALLATION AND MAINTENANCE OF THE TECHNICAL

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R Wind turbine with

Generator’s dump Electrical grid

Fig. 5.1. Power circuits wiring diagram for PS300-WT inverter

The order of installation operations:

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5.2. Photovoltaic panels inverter - with PV panels DC inputs