OC1 fault in INVT GD10 drive indicates an overcurrent fault during acceleration. This means the motor is drawing more current than the drive can handle during startup.

Common Causes:

1. Rapid Acceleration: If the acceleration time is set too short, the motor may draw excessive current during the initial acceleration phase.
2. Mechanical Load: A heavy mechanical load or a mechanical obstruction can cause the motor to draw more current.
3. Incorrect Motor Parameter Settings: If the motor parameters are not configured correctly, the drive may miscalculate the required current.
4. Power Supply Issues: Insufficient power supply or voltage fluctuations can also trigger the OC1 fault.

Troubleshooting Steps:

1. Check Acceleration Time:
   • Use the drive's programming software to adjust the acceleration time to a slower value.
   • Start with a longer acceleration time and gradually reduce it until the fault disappears.
2. Inspect Mechanical Load:
   • Ensure that the motor shaft rotates freely and there are no mechanical obstructions.
   • Check for any binding or excessive friction in the mechanical system.
3. Verify Motor Parameters:
   • Ensure that the motor's rated power, voltage, and current are correctly entered in the drive's parameter settings.
   • Consult the motor's nameplate for accurate values.
4. Check Power Supply:
   • Verify that the power supply voltage and current are within the specified range.
   • Ensure that the power supply is capable of delivering the required power to the drive.
5. Reset the Drive:
   • Turn off the power supply to the drive and wait for a few minutes.
   • Turn the power back on and try to restart the motor.