Cause : Overvoltage limit comes when the voltage level in the system has exceeded the preset overvoltage limit. When an inverter indicates an "overvoltage limit" error, it means that the voltage level in the system has exceeded the preset overvoltage limit.
- This warning can occur during ramp down, if the Vdc controller is disabled (P1240 = 0).
- If this warning is displayed permanently, check inverter input voltage.
Here's how you can tackle this issue:
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Check Power Supply Stability: Verify that the power supply to the inverter is stable and within the specified voltage range. Fluctuations or spikes in the power supply voltage can cause the system voltage to exceed the overvoltage limit. Consider using voltage stabilizers or surge protectors to regulate the incoming power supply.
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Inspect Load Conditions: Evaluate the load conditions on the system. Sudden changes in load, regenerative braking, or rapid deceleration of motors can generate voltage spikes that exceed the overvoltage limit. Ensure that the load conditions are within the capabilities of the inverter and the connected equipment.
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Review Motor Parameters: Check the motor parameters configured in the inverter. Ensure that the rated voltage and other motor parameters are set correctly according to the specifications of the connected motor. Incorrect motor parameters can lead to overvoltage conditions during operation.
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Inspect Wiring and Connections: Examine the wiring and connections between the inverter, motor, and power supply. Loose connections, damaged wires, or poor terminations can cause voltage drops or fluctuations that lead to overvoltage conditions. Secure any loose connections and repair or replace damaged wiring as needed.
