Applicable Systems
PowerCommand
Symptoms
Warning - Overfrequency. The generator output frequency exceeds the warning threshold.
Possible Causes
- Engine speed too high due to governor issue
- Load rejection causing frequency spike
Troubleshooting Steps
- Step 1: Check the generator output frequency
Frequency exceeds the rated maximum - Step 2: Inspect the governor operation and adjustment
Governor is not controlling speed correctly
How to Reset
To reset: Fix the governor, then acknowledge the warning.
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Source: Cummins Power Generation Control Manual, Cummins Inc.
Category: Generator
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