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.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

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

2. 4

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

3. 5

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