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Jim JonesAug 15, 2025
What to do if my LiteOn Controller shows overvoltage?
- MMrs. Amy Dalton MDAug 15, 2025
If your LiteOn Controller is showing an overvoltage error, it could be due to several reasons. There might be a surge voltage entering the drive input power, possibly from a thyristor convertor or phase advancing capacitor. A short circuit in the machinery output or a ground fault in the output circuit could also cause the DC bus capacitor to overcharge. Additionally, electrical signal interference might be causing the drive to malfunction. To address this, consider installing a DC link choke, inspect the motor power cable, relay terminals, and motor terminal box. Correct any grounding shorts and reapply power. You may also need to check the solutions for interference suppression, focusing on the control circuit lines.