Cummins

1447

UnclassifiedGeneral

What This Code Means

Low AC Voltage (Shutdown); One or more phase voltages dropped to 85% of nominal for more than 10 seconds

Possible Causes

  • •Fault Simulation Feature Is Enabled for the engine speed sensor
  • •Governor preload offset percentage too high
  • •Incorrect Threshold Setting Or AVR Settings

Suggested Actions

  1. 1Adjust or recalibrate as necessary
  2. 2Check the governor preload offset percentage
  3. 3Check threshold settings
  4. 4Connect InPower
  5. 5Connect with InPower
  6. 6Lower the governor preload offset
  7. 7Verify AVR settings by comparing gains, settings, and calibration factors against default calibrations
  8. 8Verify that fault simulation is not enabled for the engine speed sensor by connecting to the PCC via InPower
  9. 9Verify that fault threshold is within the normal operating range for low AC voltage

Related Cummins Fault Codes

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