Mitsubishi FR-D700 Series, FR-CS80 Series & FR-XC Series Drive
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Apr 02, 2024 11:51 am
Cause : Overcurrent trip during constant speed comes when the inverter output current reaches or exceeds approximately 200% of the rated current during constant- speed operation, the protection circuit is activated and the inverter output is shut off
- Check for sudden load change.
- Check for output short-circuit.
- Check if the stall prevention operation level is set too high. Check if the fast-response current limit operation is disabled.
- Check that the rotation direction is not switched from forward to reverse rotation (or from reverse to forward) during torque control under Real sensorless vector control.
- Check that the inverter capacity matches with the motor capacity.
- Check if a start command is given to the inverter while the motor is coasting.