What is the CrF fault on the ATV630 and ATV930 drives?
Published date:
15 September 2019
Issue:
CrF fault showing on the display of the ATV630 and ATV930 drives.
Product Line:
ATV630 ATV930
Environment:
All model numbers, all serial numbers
Cause:
Unstable mains voltage, or DC Link capacitors lifetime exceeded
Resolution:
1) Restart the drive (switch off / on the drive)
2) Check and analyze the mains input voltage
3) Check the internal wiring from the mains input to the rectifier / AFC brick
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