ABB PQFS Installation, Operation And Maintenance Instructions page 192

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.
192 Troubleshooting guide  Manual Power Quality Filter PQFS
Table 59: Abnormal states of the controller board LEDs
(after auxiliary power is applied to the 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.
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
60
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
60
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.
Table
Table