Discover our Clipsal Smart Home packages as seen on the Block

in location

OR

I'm looking for

  • Wholesalers
    • Uncheck All Check All
  • EXPERTISE
    • Expand
    • Expand
    • Expand
    • Uncheck All Check All
  • Switchboard Manufacturers
    • Uncheck All Check All
OR

The best way to see what Clipsal electric products can do for your home is seeing them in action at a Clipsal Display Centre.

Product stock may vary according to location. If you're after a specific product range, please check with your chosen location before visiting.

10 Results
    Load More Load Complete
    Change Location

    What are possible causes of SCF1 motor short circuit faults on the ATV61 and ATV71?

    Issue:
    What are possible causes of SCF1 motor short circuit faults on the ATV61 and ATV71?

    Product Line:
    ATV71 Altivar 71

    Environment:
    All

    Cause:
    SCF1 [Motor short circuit]     Short-circuit or grounding at drive output

    Resolution:
    • Check the cables connecting the drive to the motor, and the motor’s insulation
      • Using a 1,000V Megger, test the motor and leads 
      • Check for tight wiring connections
    • Perform tests via the [1.10 DIAGNOSTICS] menu.​
      • [Diagnostics] -> [Test Procedures] -> Thyristors Test and Transistor Test
    • Run the drive open circuit (with the motor disconnected, OPL turned off, and Motor Control Type set to V/F 2pts) and check the drive's output (T) terminals for balanced voltages phase to phase
      • ​[1.8 Fault Management] -> [Output Phase Loss] -> set to 'No' 
      • [1.4 Motor Control] -> [Motor control type] -> set to 'V/F 2pts'
    • Perform a diode check between U,W,V and PA+ PC-. Then measure between L1, L2, L3 and PA+ and PC-:
    NOTE: This step should be performed when no line voltage is present on the drive. Power down the drive before performing this step. 
    -Measure (using your meter's diode  scale) in one direction, then swap your leads and measure again
    Measure between PA+ to L1,L2,L3 and between PC- to T1,T2,T3 (total of 6 measurements on the input and 6 measurements on the output)
    -You should see 'OL' in one direction and a small voltage reading (approximately 0.3-.0.5V) in the other direction
        

    Didn’t find what you were looking for?

    Try Searching Again View Our Categories

    Need further assistance?

    Our Customer Care department provides total customer service solutions for our residential, industrial and commercial applications.

    Get Assistance