CCU fault

What does 88 mean?

A Controlled Common Use (CCU) fault has been detected by the R&M Materials Handling Frequency Converter, indicating that another device connected to the CAN bus has an active fault. This suggests an issue external to the frequency converter but impacting the shared communication network.

• Another device connected to the CAN bus has an active fault

Click steps to track your progress.

1. 1

   Check status and fault logs on all other devices connected to the CAN bus for active faults.

2. 2

   Inspect CAN bus cabling, connectors, and termination resistors for damage, loose connections, or incorrect installation.

3. 3

   Verify CAN bus communication parameters (e.g., baud rate, node ID, bus termination settings) on the Kone CMXC-022 Frequency Converter and all other connected devices for consistency.

4. 4

   Measure differential voltage between CAN-High and CAN-Low lines on the CAN bus to ensure proper signal levels.