Diagnostics
Fault detection via LCP: messages are displayed
when the frequency converter fault circuit
detects a faulty condition or an unresolved fault.
A warning light ashing display indicates
potential problems.
There are two levels of alarms; Reset Alarms and
Trip-lock Alarms.
a) In case of reset alarm: you can stop and then
start the unit.
b) In case of trip-lock alarm, you have to
disconnect the mains, wait for dark display,
then stop and start.
Figure 2: WARNINGS
and ALARM messages
are displayed when the
frequency converter fault
detects a faulty condition
WARNINGS and ALARM
Alarm Log Check the content of the alarm log.
5 latest alarms are available through the “Alarm
Log” button key on the LCP.
Check the alarm code and refer to the
troubleshooting session of the Operating
Instructions VLT® CDS 302 and CDS 303 on page
135. It contains guidance for the complete list
of alarms and warnings.
If the troubleshooting suggested does not
resolve the problem, please contact Danfoss for
support.
Do not exchange the drive before contacting
Danfoss support.
6 FRCC.PC.036.A2.02
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