Fuji Drives
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May 11, 2024 12:57 pm
Cause : Overcurrent trip during constant speed comes when the abrupt fluctuations in the load or abnormal load conditions. The inverter output current exceeds the rated current during constant-speed operation, the protection circuit is activated and the inverter trips.
An "OC3" fault code on a Fuji drive indicates overcurrent during constant speed operation. This means the motor is drawing more current than the drive is designed to handle while running at a steady speed.
Here are some potential causes of an OC3 fault in a Fuji drive:
- Mechanical overload: The motor might be experiencing excessive mechanical load due to factors like:
- Rapid load changes: Sudden increases in load on the motor can also trigger an OC3 fault.
- Drive overload: The drive itself might be overloaded if it's undersized for the motor's current requirements.
- Wiring issues: Loose or damaged wiring connections between the drive and the motor can cause unexpected current fluctuations.
- Internal drive fault: In rare cases, the fault could be within the drive itself.
Here's how to troubleshoot an OC3 fault in a Fuji drive:
- Check the load: Ensure the mechanical load on the motor is appropriate and within the specified operating parameters.
- Inspect the motor and drive: Look for any signs of physical damage or overheating on the motor or drive.
- Verify wiring: Make sure all wiring connections between the drive and the motor are secure and undamaged.
- Review settings: Double-check that the drive's current limit settings are appropriate for the motor. Refer to the Fuji drive's user manual for specific instructions.
- Consult Manuals: The Fuji Electric troubleshooting guide for your specific drive model might offer additional steps specific to the OC3 fault code.