What can cause a CrF1 precharge fault on the ATV61 and ATV71 drives?

Issue:
CrF1 precharge fault on the ATV61/ATV71 drives

Product Line:
Altivar ATV61 and ATV71

Environment:
All

Cause:
Drive is tripping on an CrF1 fault.

Resolution:
CrF1 is a precharge fault.
Possible cause: Load relay control fault or charging resistor is damaged.

Remedy: Try power cycling the drive.
If issue persists, there is likely an internal problem.
This may require VFD replacement or repair.

Released for: Schneider Electric USA