Mot. current %.2s not equal 0
Heidenhain · NC Control
What does 2941 E140 mean?
Motor current was detected as non-zero during a cutout channel test (24-hour test). This indicates that current is still flowing to the motor when it should be fully disconnected or de-energized, posing a potential safety risk.
Common Causes
- Motor current was determined during cutout channel test (24-h test).
Repair Steps & Checklist
Click steps to track your progress.
- 1
Ensure that during the cutout channel test, no motor current is deliberately being commanded by the control or any residual energy is present.
- 2
Check the inverter for the specified axis for any internal faults, leakage current, or sticky contacts when it is commanded to be off.
- 3
Inspect the motor power cables for any short circuits or ground faults that could cause current flow even when the inverter is disabled.
- 4
Verify that the inverter's output stage completely de-energizes the motor during the cutout channel test, preventing any residual voltage or current.