ABB PQFS Installation, Operation And Maintenance Instructions page 155

Table 56: Abnormal states of the controller board LEDs (after auxiliary power is applied to the
Symptom
The two green main controller
board LEDs are blinking but the
DSP controller LED (4) is
blinking twice as slow as the
µcontroller LED (1).
The PQF-Manager shows 'ACK.
FAULT' and gives error message
'Bad parameters'.
The red LED (3) on the main
controller board is on.
One of the two controller LEDs
(1-4) on the main controller
board is not blinking while the
other one is.
system)
Cause
The filter parameters
entered by the
commissioning
engineer are not
consistent with the filter
configuration reported
by the controller.
The filter is stopped due
to an unacceptably high
number of critical errors.
One of the controllers is
not starting up properly.
Eventually the red LED (3)
will switch on.
Manual Power Quality Filter PQFS ç Troubleshooting guide 155
What to do
Check the commissioning parameters
and correct where necessary. (Cf.
Chapter 8).
– Check the filter event log to
analyze the critical errors.
Refer to Table 57 to know what
to do in order to solve the
problem reported.
– After resolving the problem,
the fault has to be
acknowledged and the filter
has to be restarted manually.
– Check the filter event log to
analyze the critical errors.
Refer to Table 57 to know what
to do in order to solve the
problem reported. Most likely
the controller board has to be
replaced.
– After changing the main
controller board, the filter has
to be recommissioned.