28 October 2021
Overvoltage level on an ATV61/ATV71 that causes OSF
Altivar 61 and Altivar 71 series drives.
All part numbers ending with M3XXX or N4XXX, All serial numbers.
- 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 deactivated 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.