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Alexandra OsborneAug 16, 2025
What to do if Omron Servo Drives show overvoltage?
- PPatty Simmons MDAug 16, 2025
If your Omron Servo Drive indicates an overvoltage error, it means the power supply voltage has exceeded the allowable range. Check the voltage between the connector (L1, L2, and L3) lines and ensure you are inputting the correct voltage. If a phase advance capacitor or UPS is in use, remove it. Also, inspect the Regeneration Resistor wiring between the B1 and B2 terminals for breaks using a tester; if broken, replace the resistor. Ensure the regeneration resistance and wattage match specified values, adjusting if necessary based on regenerative energy calculations. If the issue persists, the Servo Drive may be faulty and require replacement.