I3 Powering Down

What does 10338 mean?

This fault is asserted when the DC bus voltage drops to 80% of its rated value on port 3. This indicates a significant loss of DC bus voltage which can lead to drive shutdown and loss of control.

Complete Troubleshooting Guide

1. 1

   Measure the DC bus voltage to confirm it is indeed dropping to 80% of its rated value during operation.

2. 2

   Check the incoming AC power supply for stability, proper voltage levels, and ensure no phase loss is occurring.

3. 3

   Inspect the DC bus capacitors for any signs of degradation, bulging, or leakage that would indicate reduced capacitance.

4. 4

   Verify the proper operation of the drive's power supply monitoring circuitry to ensure accurate voltage readings.

5. 5

   Reduce the drive load if the powering down event frequently correlates with high load conditions on the motor.