OC2 fault in INVT GD10 drive indicates an overcurrent fault during deceleration. This means the motor is drawing more current than the drive can handle while slowing down.

Common Causes:

1. Rapid Deceleration: If the deceleration time is set too short, the motor may draw excessive current during the braking phase.
2. Heavy Mechanical Load: A heavy mechanical load or a mechanical obstruction can cause the motor to draw more current during deceleration.
3. Incorrect Motor Parameter Settings: If the motor parameters are not configured correctly, the drive may miscalculate the required current during deceleration.
4. Internal Drive Faults: In rare cases, internal faults within the drive itself can trigger the OC2 fault.

Troubleshooting Steps:

1. Check Deceleration Time:
   • Use the drive's programming software to adjust the deceleration time to a slower value.
   • Start with a longer deceleration 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 for Internal Faults:
   • If the above steps do not resolve the issue, it may be necessary to inspect the drive's internal components or consult with a qualified technician.
5. Reset the Drive:
   • Turn off the power supply to the drive and wait for a few minutes.