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L
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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