Nidec & Control Techniques Commander C200, C300, NE200 & NE300 Drive
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Apr 10, 2024 5:22 am
Cause : DC bus voltage has exceeded the peak level or maximum continuous level for 15 seconds comes when the OV trip indicates that the DC bus voltage has exceeded the VM_DC_VOLTAGE[MAX] or VM_DC_VOLTAGE_SET[MAX] for 15 s.
- Increase deceleration ramp (Pr 04).
- Decrease the braking resistor value (staying above the minimum value).
- Check nominal AC supply level.
- Check for supply disturbances which could cause the DC bus to rise.
- Check motor insulation using an insulation tester.
