Brake Chopper

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Immediate switch-off indicating an issue with the braking system, such as excessive regenerative power, an interrupted braking resistor circuit, a short circuit in the braking resistor circuit, a braking resistor with too high resistance, or a defective brake chopper. A ground fault could also be a contributing factor.

• The brake chopper circuit is malfunctioning or not engaging correctly.
• Issue with the braking resistor or its connection.
• Over-braking or regenerative energy exceeding chopper capacity.

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1. 1

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

2. 2

   Check the supply cable connections to the braking resistor for continuity and correct wiring.

3. 3

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

4. 4

   Replace the MOVIDRIVE unit if the internal brake chopper is determined to be defective.

5. 5

   Check for any ground faults within the braking resistor circuit or associated wiring.