OPEN ARMATURE CIRCUIT

What does 404 mean?

This fault occurs when a large current error is detected in the armature circuit and persists for half a second. This indicates a break in the armature current path.

• Open DC link fuse F4.
• Break or poor connection in the motor armature circuit wiring.
• Faulty or open power poles within the DC loop contactor.

Click steps to track your progress.

1. 1

   Check the DC link fuse F4 for continuity and replace if blown.

2. 2

   Inspect all connections and wiring in the motor armature circuit for any open circuits.

3. 3

   Examine the power poles in the DC loop contactor for proper contact and integrity.