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    What level of current flow triggers an SCF2 fault on an ATV61 or ATV71 series drive?

    Issue:
    What level of current flow triggers an SCF2 fault on an ATV61 or ATV71 series drive?

    Product Line:
    ATV61 / ATV71 series

    Environment:
    All models, All serial numbers

    Cause:
    Information not available in current literature.

    Resolution:

    SCF2
     
    Principal :
    The drive is protected against impedant (slow) short circuit, phase to phase or phase to ground on the output of the drive.
     When there is a impedant short circuit the drive trips in SCF2 and the fault relay opens
     
    Detection time:
    It’s a software detection (a few ms).  Output current sum > 25% of the rated current of the drive.
     
     

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