12. Troubleshooting
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Service
Manual
PHASE
Alarm from the mains monitoring equipment.
An input on I/O card 1 (X16:7-8) can be connected to external equipment
that monitors received mains signals in terms of voltage levels, loss of
phase, etc. If this input goes high, the error message is displayed.
Find out the reason for the error indication by inspecting the mains
monitoring equipment.
For more on this troubleshooting, refer to the manual supplied with the
mains monitoring equipment in use.