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    What terminals on an Altivar drive do I connect a braking resistor to?

    Issue:
    What terminals on an Altivar drive do I connect a braking resistor to?

    Product Line:
    ATV312, ATV32, ATV61, ATV71, ATV630, ATV930, ATV320

    Environment:
    All models, All serial numbers

    Cause:
    Installation information needed.

    Resolution:
    Most drives include the Dynamic Braking transistor so the external braking resistor will be wired between the PA and PB terminals.  
    There will either be a jumper or a DC choke connected between PA and PO.  It is important to make sure this is not removed because the drive will not function without it.
    For the ATV12 and for high horsepower drives (ATV61, ATV71) an internal transistor is not included and would have to be added to the drive as an external module.  
    The ATV600 family of drives cannot be connected to a braking resistor. And there is no PB terminal. 
    Consult your specific drives Installation manual for details. 

    Note: High HP Process Drives ATV900 require an external braking unit, per attached.  Do Not short across PA+ and PC-.

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