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

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

    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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