DC Link Overvoltage

What does 07 mean?

Immediate switch-off triggered when the DC link voltage exceeds its maximum permissible limit. This is often caused by excessive regenerative energy from the motor during deceleration or potentially a ground fault, risking damage to inverter components.

• DC link voltage within the inverter is too high (e.g., above P4-OV).
• Excessive regenerative energy from the motor causing voltage rise.
• Malfunction in the inverter's DC bus control or braking system.

Click steps to track your progress.

1. 1

   Extend the deceleration ramps (e.g., in parameters P501 or P503) to reduce regenerative energy.

2. 2

   Check the supply cable connections to the braking resistor.

3. 3

   Verify the technical data (e.g., resistance value) of the braking resistor matches specifications.

4. 4

   Check for a ground fault in the system.