OV1 fault in an INVT GD10 drive indicates an overvoltage fault. This means the DC bus voltage has exceeded the permissible limit.

Common Causes:

1. Incorrect Power Supply: The power supply voltage may be too high or unstable.
2. Faulty Components: Internal components within the drive, such as diodes or capacitors, may be damaged or malfunctioning.
3. Environmental Factors: Extreme temperature or humidity conditions can affect the drive's performance and trigger the OV1 fault.

Troubleshooting Steps:

1. Check Power Supply:
   • Verify that the power supply voltage is within the specified range.
   • Ensure that the power supply is stable and free from fluctuations.
2. Inspect Internal Components:
   • If you have the necessary expertise, inspect the drive's internal components for any signs of damage or overheating.
3. 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.