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Jessica MitchellAug 19, 2025
What to do if Teco Electro Drives Controller shows over-voltage (regeneration error)?
- JJill GutierrezSep 12, 2025
If the Teco Electro Drives Controller shows an over-voltage (regeneration error), it could be due to the main circuit voltage exceeding the maximum allowable value (410V) or excessive regeneration voltage. First, use a multimeter to verify that the input voltage is within the specified limit. Then, check parameter Cn012 to ensure it is set correctly. If the alarm occurs during operation, try extending the acceleration/deceleration time or reducing the load ratio within the permitted range. If the issue persists, an external regeneration resistor may be needed.

