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    What can cause the ATV680 enclosed drive to trip on a AFE contact feedback or CRF3 fault?

    What can cause the ATV680 enclosed drive to trip on a AFE contact feedback or CRF3 fault?

    Product Line:
    Altivar ATV680 drive


    AFE units are missing the feedback from the line contactors not pulling in. 

    Drive tripping on AFE feedback fault or CRF3 fault
    Check 230vac  on the X100 terminals all ok
    Check 230vac on the X110 two terminals all good
    Check 230vac on the X100 terminal pin 15 and 19 all good 230vac to 0V
    Start drive and see that we are not getting any voltage from the AFE unit back to X100 pins 16 and 5 so the K51 relay is not pulling in to allow mains voltage to the AFE.
    Turned off power and reseat all of the X100 and X110 terminals 
    Set up the motor control to Go and Stop function
    Tested Again
    Now we are getting both the K51 and K52 relays to pull in and the drive is running
    Stopped the drive and set the motor control Run Stop back to 60 seconds and
    Tested again the drive is running
    So the issue appears to have been a connection issue on the X100 or X110 terminal blocks.

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