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Search FAQs

What voltage level causes an Overvoltage Fault (OSF) on an ATV61 or ATV71 series drive?

Issue:
Overvoltage level on an ATV61/ATV71 that causes OSF

Product Line:
Altivar 61 and Altivar 71 series drives.

Environment:
All part numbers ending with M3XXX or N4XXX,  All serial numbers.

Cause:
N/A

Resolution:
- The over supply flag OSF FAULT is set when the drive is in the capacitor charging state and the dc bus voltage is higher than OSFH_Level.
- The over supply flag OSF FAULT is set when the drive is in the PWM disabled state and when the dc bus voltage is higher than OBFH_Level.
- The flag OSF FAULT is reset when the dc bus voltage is lower than OSFL Level.
- The over supply detection is always activated and cannot be inhibited.


 
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