Internal bus communication

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This fault signifies a problem with internal communication within the frequency converter, which can be caused by ambient electromagnetic interference or a defective hardware component.

• Ambient temperature exceeding specified limits.
• Insufficient heatsink cooling or blocked airflow.
• High harmonic distortion on the power supply.
• Internal power stage fault.

Klikk på steg for å spore fremgangen.

1. 1

   Measure the temperature of the heatsink using an infrared thermometer.

2. 2

   Verify fan operation and clean heatsink fins of debris.

3. 3

   Check motor cable for grounding issues or damage.

4. 4

   Measure the DC bus voltage during operation.