ABB PQFM - Page 219

Manual Power Quality Filter PQFM  Troubleshooting guide 219
Fault messag
e
Cause
What to do
−
Real time clock
problem
− Watchdog fault
− InternalµC 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.
Table 66: Other filter indications and behavior with corresponding troubleshooting tips
Symptom
Cause / State
What to do
The filter is working at
100% of its nominal
capacity because the
load requirement is
asking this.
The harmonic stress on
the network is still too
high.
Install additional filter units
to reduce
the stress further.
The harmonic stress on
the network is sufficiently
low.
The filter can be kept running in this
condition.
The filter is working at
100% of its nominal
capacity while the
load is only at a
fraction of the filter
rating.
The
re is a problem in the
CT connections or a
hardware problem.
−
Check the CT installation (CT
location, CT shorts, …)
− Check the connection between the
CT terminal block X21 and the main
controller terminals P5-1…P5-6.
− Measure the line currents (e.g.
ammeter) and compare them with
the line currents given by the filter
(PQF-Manager or PQ-Link).
There is a software
problem.
−
Stop the filter, switch off the
power of the auxiliaries and switch
it on again. Restart the filter and
see if the problem is solved.
− If the problem persists, contact
your ABB service provider.
The filter has been asked
to generate static
reactive power.
Verify the reactive power settings of
the filter.