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What is the InFD (Internal Error 13) Fault on the Altivar Process Drive?

Issue:
Getting InFD Fault on the Altivar Process Drive.

Product Line:
Altivar Process Drive System (ATV660, ATV960, ATV680, ATV980)

Environment:
All serial numbers for Altivar Process Drive

Cause:
Drive is displaying an Internal Error 13

Resolution:
An InFD is an Internal Error 13 (Differential Current Deviation Error).
Possible Causes:

One or more bricks are not operating
- List of bricks in the Altivar Drive Systems (ATV660, ATV680, ATV960, ATV980)
  - Rectifier Brick
  - Inverter Brick
  - Filter Brick
  - Active Front End (AFE) Brick
Current transformer of the bricks are damaged
- The current transformer are located on the Inverter Brick.
- Inverter Brick may have to be replaced.

Remedies:
*Only authorize personnel should perform these task*

Check Power Board to Invert Brick cable.
- Check pin connections
- Reseat
Measure U/V/W phase currents of each brick on the paralleling choke to identify the brick with less output current.
Manually test IGBT on each Brick with a multimeter.
- Open Motor choke connections when performing test.