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    How can the voltage boost be adjusted on an ATV312 drive?

    Issue:
    How can the voltage boost be adjusted on an ATV312 drive?

    Product Line:
    ATV312

    Environment:
    All

    Cause:
    Need for more voltage on startup.

    Resolution:
    Goto SEt menu
    [IR compensation]     0 to 100%  default is 20%
    - For [U/F mot 1 selected] (UFt) = [SVC] (n) or [Energy sav.] (nLd), : IR compensation
    - For [U/F mot 1 selected] (UFt) = [Cst. torque] (L) or [Var. torque] (P), : Voltage boost
    Used to optimize the torque at very low speed (increase [IR compensation] (UFr) if the torque is insufficient).
    Check that the value for [IR compensation] (UFr) is not too high when the motor is in a hot state otherwise some
    instabilities can occur.
    Note: Changing [U/F mot 1 selected] (UFt), will cause [IR compensation] (UFr) to return to its factory setting (20%).

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