Siemens SINAMICS PERFECT HARMONY GH180, Function Manual

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11.7 Drive Faults and Alarms Modulator Related
Handling Modulator Related Faults
Table 11-6 Modulator related faults
Fault display Type Enable Potential causes and corrective actions
Modulator configuration
Note: Fault display naming
to be released in a later soft‐
ware version,. F Fixed Cause
During initialization of the digital control rack (DCR), a series of self-tests
run to ensure that the modulator is functioning properly.
The software detected a problem when attempting to initialize the mod‐
ulator.
Action
1. Review grounding of the DCR.
2. Replace DCR.
Modulator board fault
Note: Fault display naming
to be released in a later soft‐
ware version.
F Fixed Cause
When a cell fault is detected, the fault routine starts the cell diagnostic
routine. If no cell fault is found, this fault displays. The cell fault indication
is from the modulator master fault register.
Action
1. Review grounding of the DCR.
2. Replace DCR.
Cell fault/modulator F Fixed Cause
Modulator has an undefined fault from a cell. Cell shows fault but the fault
is undetectable.
Action
Check fiber links and cell.
Bad cell data F Fixed Cause
Cell data packet mode bits incorrect.
Action
1. Check both ends of fiber links.
2. Check cell control board and DCR.
Cell config fault F Fixed Cause
Modulator cell configuration does not agree with menu setting of installed
cells.
Action
1. Ensure correct number of cells are entered into menu setting.
2. Check DCR.
3. Check that all fibers are connected.
Troubleshooting Faults and Alarms
11.7 Drive Faults and Alarms Modulator Related
Control Manual
Operating Manual, A5E50491925A
457