Siemens SINAMICS PERFECT HARMONY GH180, Function Manual

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11.6 Drive Faults and Alarms System Related
Handling System RelatedFaults
Table 11-5 System related faults
Fault display Type Enable Potential causes and corrective actions
Excessive drive losses SOP Fixed Cause
Estimated drive losses are too high, due to (1) internal problem in the cells,
or (2) scaling error in voltage and current measurement on input and
output side.
Action
1. Remove medium voltage and visually inspect all the cells and their
connections to the transformer secondary. Inspect all transformer
connections.
2. Inspect all connections including bus bars for thermal damage.
3. Contact Siemens customer service for support.
4. With the drive operating above a 25% power rating, verify if estimated
drive efficiency is above 95%. If not, then voltage and current scaling
needs to be checked.
Note:
• This fault will cause an input protection fault if dedicated I/O is used for
IP faults.
• This drive protection will not function properly if input CT’s are instal‐
led incorrectly. This would be indicated by negative input power on a
two quadrant system.
Carrier frq set too low A Fixed Cause
The software detected a menu entry for carrier frequency menu (3580)
was below the lowest possible setting based on the system information.
Action
1. Change the value entered in carrier frequency menu (3580).
2. Check the value of the installed cells/phase menu (2530).
3. Contact Siemens customer service.
System program F Fixed Cause
The software detected an error in the SOP file.
Actions
1. Reload SOP.
2. Contact Siemens customer service.
Menu initialization F Fixed Cause
The software detected an error in one of the files stored on the CPU board
compact flash card.
Action
Contact Siemens customer service.
Troubleshooting Faults and Alarms
11.6 Drive Faults and Alarms System Related
Control Manual
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Operating Manual, A5E50491925A