ABB PQFS Installation, Operation And Maintenance Instructions page 163

Fault message
– Real time clock
problem
– Watchdog fault
– Internal µC fault
– Corrupted DSP code
– Corrupted µC code
Different firmwares
Remark:
If the problem persists, contact your ABB service provider. Provide him with all the relevant information, i.e.
Filter serial number and type, status of the control LEDs, Error messages displayed and filter behavior.
Cause
Internal system error
Different units in a filter
system have different
firmware version (DSP or
microcontroller)
Manual Power Quality Filter PQFS ç Troubleshooting guide 163
What to do
Reset the filter by switching off and on the
power. If the problem persists, contact your
ABB representative. The controller card
must probably be replaced.
Upgrade all the units with the same (most
recent) firmware.