USER INTERFACE 13
installation. Table 6 and Table 7 offer an overview of faults recorded by the DSP controller and
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Table 6: Overview of events
Name Description Action
Over voltage RMS The RMS value of the supply voltage is higher than
the acceptable maximum value
Disconnect from grid
Over voltage Peak The peak valud of the supply voltage is too high Disconnect from grid
Under voltage RMS The RMS value of the supply voltage is lower than
the acceptable minimum value
Disconnect from grid
Loss of phase The system detected a loss of supply on at least one phase Disconnect from grid
Wrong phase rotation The module is fed by a supply system, which has
the wrong phase rotation
Inverter trips/
reset required
Unbalanced supply The supply imbalance is out of range Disconnect from grid
Island detected Unit was grid connected initially, but has detected it is currently
in island while island operation is forbidden
Disconnect from grid
Bad CT connection The automatic CT detection procedure encountered a problem
during the identification process
Continue
Over frequency The system detected that the network frequency above limit Disconnect from grid
Unstable mains
frequency
The network frequency is fluctuating too fast Disconnect from grid
No synchronization The system cannot synchronize with the network Disconnect from grid
DC over voltage (SW) The DC software over voltage protection was triggered Inverter trips/
reset required
DC over voltage (HW) The DC hardware over voltage protection was triggered Inverter trips/
reset required
DC under voltage (SW) The DC software under-voltage protection was triggered Inverter trips/
reset required
Preload problem The DC capacitors could not be preloaded. The voltage increase
on the DC capacitors during the preload phase is not high enough
Inverter trips/
reset required
DC Top over voltage The DC over-voltage protection of the capacitors in the
positive stack was triggered
Inverter trips/
reset required
DC Bot over voltage The DC over-voltage protection of the capacitors in the
negative stack was triggered
Inverter trips/
reset required
Over current peak (SW) The software peak current protection was triggered Inverter trips/
reset required
Over current RMS The system detected an RMS over-current Inverter trips/
reset required
Global battery voltage
error
The battery voltage exceeds the maximum DC voltage of
PQstorI, the battery connections (+/-) are inverted or the AC voltage
is high and the battery voltage (SoC) is too low, preventing the DC
contactor from closing
Inverter trips/
reset required
Ground fault Inverter trips/
reset required
IGBT temporary The IGBT modules report a transient error that could be cleared by the
system, possibly due to peak over-current or a control voltage too low
for the IGBT drivers
Inverter trips/
reset required
IGBT permanent The IGBT modules report an error that cannot be cleared by the system,
possibly due to peak over-current or a control voltage too low for the
IGBT drivers
Inverter trips/
reset required
IGBT check cooling Software reported an IGBT over-temperature Inverter trips/
reset required
SPI error The DSP received no response from the SPI port Inverter trips/
reset required
Mismatch between
units
Modules in a multiple module system have different settings
Inverter trips/
reset required
Under frequency The system detected that the network frequency under limit Disconnect from grid
Bad sequence The DSP detected an inadequate behavior in the sequence Inverter trips/
reset required
Bad ratings Inconsistent set of commissioning parameters Inverter trips/
reset required
Emergency stop Emergency stop input has been activated Inverter trips/
NO reset required
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