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What causes a precharge fault (CRF1) on an ATV320 drive?

Issue:
What causes a precharge fault (CRF1) on an ATV320 drive?

Product Line:
Altivar 320

Environment:
All

Cause:
Charging relay control detected fault or
charging resistor damaged.

Resolution:
  • Turn the drive off and then turn on again.
  • Check the internal connections.
  • Measure the DC bus.
  • Contact Schneider Electric Product Support.
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