Nidec & Control Techniques Commander S, SE, SX, SK & SP Drive
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Apr 04, 2024 6:43 am
Cause : Motor Resistance comes when the auto-tune test to measure the motor stator resistance has failed because the output current failed to rise to the correct level to produce an accurate measurement.
- Check the motor cable / connections.
- Check the integrity of the motor stator windings using an insulation tester.
- Check the motor phase to phase resistance at the drive terminals.
- Check the motor phase to phase resistance at the motor terminals.
- Select Linear V to F (1) in Motor Control Mode (P3.05) and verify the output current waveforms with an oscilloscope.
- Replace the motor.