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    What would cause ATV61 and ATV71 drives to have a blank display and not power up?

    Issue: 
    Blank display on the ATV61 and ATV71 drives.

    Product Line: 
    Altivar ATV61 and ATV71

    Environment: 
    All of the ATV61 and ATV71 drives

    Cause: 
    DC bus is not charging, bad power board or MCB

    Resolution:

    1. Check Mains voltage on L1 L2 L3,
    2. Check DC bus voltage on PA+ and PC ( if this drive has a DC choke check to make sure its connected to PA and PO).
    3. Check the +24vdc and +10vdc power supplies.
    4. Power cycle the drive, if needed, and see if the display comes back up.
    5. Check to see if there is an Ethernet cable connected  into the modbus port.
       

       

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