Left Drive Motor Controller Fault

What does PCU: n1, ECU: 1XXX code mean?

A fault has occurred in the motor controller for the left drive (PCU: n1, ECU: 1XXX code series). The specific reaction depends on the controller's configuration and the nature of the fault.

• Internal failure within the Left Drive Motor Controller module.
• Communication error with the Left Drive Motor Controller.
• Faulty motor or wiring connected to the left drive controller.

Click steps to track your progress.

1. 1

   Measure input supply voltage (L1, L2, L3) at the Left Drive Motor Controller's main power terminals to ensure it is within specified operational limits.

2. 2

   Inspect the motor power cables (U, V, W) and their terminal connections between the Left Drive Motor Controller and the Left Drive Motor for any visible damage, chafing, or loose contacts.

3. 3

   Inspect all feedback (encoder/resolver) cables and their connectors for the Left Drive Motor for physical damage, proper routing, and secure seating at both the controller and motor ends.

4. 4

   Verify Left Drive Motor Controller configuration parameters (e.g., motor nominal data, speed limits, current limits, feedback settings) against the latest commissioning documentation or original backup.