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슈나이더 일렉트릭 코리아 웹사이트에 방문해 주셔서 감사합니다.

슈나이더 일렉트릭 코리아 웹사이트 방문자 분들 모두 환영합니다.
FAQ 검색
What are possible causes of SCF1 motor short circuit faults on the ATV61 and ATV71?
Issue:
SCF1 faults on the ATV61 and ATV71.

Product Line:
ATV71, Altivar 71
ATV61, Altivar 61

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 the Transistor test via the [1.10 DIAGNOSTICS] menu with the motor connected.​
    • [Diagnostics] -> [Test Procedures] -> 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 using terminals U/T1, W/T2, V/T3, 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 ABC scale) in one direction, then swap your leads and measure again
Measure between PA+ to T1, T2, and T3.  Then swap leads and test again.
Next measure between PC- to T1,T2,T3 and then swap leads. (total of 12 measurements: 6 measurements to PA+ and 6 measurements to PC-)
-You should see 'OL' in one direction and a small voltage reading (approximately 0.3-.0.5V) in the other direction and each set of measurements should be consistent between phases.
-Values outside the acceptable range can indicate damage to the IGBT's or other components in the drive.

Return programming to original settings after testing is complete.

슈나이더 일렉트릭 Korea

첨부 파일
Static Check.PNG.png [198.04 KB]
What are possible causes of SCF1 motor short circuit faults on the ATV61 and ATV71?
Issue:
SCF1 faults on the ATV61 and ATV71.

Product Line:
ATV71, Altivar 71
ATV61, Altivar 61

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 the Transistor test via the [1.10 DIAGNOSTICS] menu with the motor connected.​
    • [Diagnostics] -> [Test Procedures] -> 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 using terminals U/T1, W/T2, V/T3, 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 ABC scale) in one direction, then swap your leads and measure again
Measure between PA+ to T1, T2, and T3.  Then swap leads and test again. 
Next measure between PC- to T1,T2,T3 and then swap leads.  (total of 12 measurements: 6 measurements to PA+ and 6 measurements to PC-)
-You should see 'OL' in one direction and a small voltage reading (approximately 0.3-.0.5V) in the other direction and each set of measurements should be consistent between phases.
-Values outside the acceptable range can indicate damage to the IGBT's or other components in the drive.

Return programming to original settings after testing is complete.
      
 

슈나이더 일렉트릭 Korea

첨부 파일
Static Check.PNG.png [198.04 KB]
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