Internal bus communication

What does 34 mean?

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.

Click steps to track your progress.

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.