OPEN ARMATURE CIRCUIT

What does 404 mean?

A large current error existed for ½ second, indicating an open circuit within the motor armature path. This prevents proper motor operation.

• Blown DC link fuse F4.
• Open motor armature circuit wiring.
• Open power poles in the DC loop contactor.

Click steps to track your progress.

1. 1

   Check the DC link fuse F4.

2. 2

   Check the motor armature circuit wiring for continuity.

3. 3

   Check the power poles in the DC loop contactor for proper closure and function.