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lhayesAug 25, 2025
What to do if Gefran Inverter shows OV Over voltage?
- TTimothy PriceAug 25, 2025
If a Gefran Inverter shows an 'OV Over voltage' error, it could be due to:* Deceleration time being set too short, causing regenerative energy to flow back from the motor to the inverter.* The inverter input voltage being too high.* The use of power factor correction capacitors.* Excessive braking load.* A defective braking transistor or resistor.* Incorrectly set speed search parameters.To address this, consider the following:* Increase the deceleration time.* Reduce the input voltage to comply with requirements, or install an AC line reactor.* Remove any power factor correction capacitors.* Use a dynamic braking unit.* Replace the braking transistor or resistor.* Adjust the speed search parameters.
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