ABB OmniCore C30 Product Manual page 536

6 Troubleshooting
6.3.4 Troubleshooting the power unit
Continued
9
10
11
12
536
Action
Check the connection of the Ether-
net cables.
Measure the AC OK signal.
Check event log if there is a mes-
sage about DC-link voltage.
The power unit may be faulty, re-
place it and verify that the fault has
been fixed.
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Note
• If the connection is OK, proceed with
step 12.
• If there is a problem with the connection,
repair the connection and go to step 8.
Use a multimeter and insulating gloves.
The AC OK should be 0 V.
Make sure that connector X13 is connected
properly on both ends.
• If the AC OK signal is 24 V, proceed with
step 12.
• If the AC OK signal is 0 V, proceed with
the next step.
If message numbers 34401/34402, proceed with
step 12.
If not, power unit is ok.
How to replace the unit is detailed in
the power unit on page 358.
Product manual - OmniCore C30
3HAC060860-001 Revision: P
Replacing