75
EN
SUNSYS PCS2 IM UL Power Conversion System and Storage with Islanding Mode from 33 to 200 kVA - Ref.: IOMSUNPCXX07-EN 01
System warnings
Warning
Cause
Remedy
W40
Low Insulation Resistance
Detection of low insulation resistance. Check the Insulation to earth.
W41
Insulation Sensor Fault
Insulation sensor feedback not
correct.
Check the Insulation Monitoring
Device is properly connected.
W42
(1)
Module 1 on Alarm
Module 1 stopped by alarm.
Check Module 1.
W43
(1)
Module 2 on Alarm
Module 2 stopped by alarm.
Check Module 2.
W44
(1)
Module 3 on Alarm
Module 3 stopped by alarm.
Check Module 3.
Unit warnings
Warning
Cause
Remedy
W65
Unit in Derating
The unit is reducing the power
supplied/ drawn by the network.
Check the other alarms and/or visual
warnings.
W69
AC input network outside
frequency range
Input network is missing or insufficient
(voltage and/or frequency values
incorrect with reference to the infor-
mation provided in the technical data
table).
Check for the disconnection of
protective devices upstream of the
unit.
Check the applied voltage and
frequency comply with the values set
on the HMI.
W70
W81
Unit Active power limitation
Active power request by EMS not
satisfied (due to temperature or
elapsed overload condition).
Reduce the active power request.
W82
Unit Reactive power limita-
tion
Reactive power request by EMS
not satisfied (due to temperature or
elapsed overload condition).
Reduce the reactive power request.
System alarms
Alarms
Cause
Remedy
A01
(3)
Switch-off due to external
command
The PCS is switched off due to an
external instant switch-off command.
Check if the external contact is
properly connected to ADC card. A
manual reset could be needed.
A05
(3)
SPD AC triggered
AC overvoltage.
Check and replace if necessary.
A06
(3)
SPD DC triggered
DC overvoltage.
Check and replace if necessary.
A07
Output contactor alarm
The output contactor status has not
complied with machine command.
Contact the support service.
A08
Transformer over-temper-
ature
Over-temperature of the trasformer.
Check the ventilation or air-condition-
ing system in the unit room.
A13
Watchdog elapsed
External EMS communication watch-
dog elapsed.
Check the cable between PCS and
External EMS device.
A15
Incorrect system configura-
tion
System configuration wrong.
Check the configuration setting.
A22
Battery Overvoltage
Battery voltage too high.
Check the battery configuration.
A23
Battery Communication
fault
No battery communications.
Check the cable between PCS and
battery.
A24
General Battery Alarm
Other battery alarm are present.
Solve the specific battery Alarm.
A25
(2)
BES Thermal protection
fault
Over temperature inside the cabinet.
Check the thermal protection is
properly connected to the ADC Card
and verify temperature inside battery
cabinet.
A26
DC Connection Fault
Battery DC Contactor test failed.
Check battery DC Contactor is prop-
erly connected to the ADC Card.
A27
(2)
Battery Over Temperature
Battery temperature too high.
Reduce ambient temperature.
