ABB PQFS

Manual Power Quality Filter PQFS  Troubleshooting guide 205
Fault message Cause What to do
Com. Problem (CAN
Bus)
The communication
through the CAN bus
between units is not
working properly.
− Check the RJ-45 cables
between modules.
− Check the termination for
the CAN bus: both (and
only) the ends of the bus
must have the DIP switch
S5-4 in the “set” status.
− 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.
−
Real time
clock
problem
− Watchdog
fault
− Internal
µC fault
− Corrupted
DSP code
− Corrupted
µC code
Internal system error 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.
Different firmwares Different units in a filter
system have different
firmware version (DSP or
microcontroller)
Upgrade all the units with the
same (most recent) firmware.
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.