A135 alarm in WEG CFW900 Drive indicates CANopen Off-line. This means the CANopen network lost synchronization or dropped connection with the master controller, transitioning to a pre-operational state.
Cause:
It occurs if the state of the CANopen node changes from operational to pre-operational.
- The master is not sending the guarding/heartbeat telegrams at the programmed time.
- Communication problems caused by lost telegrams or transmission delays.
Note: Check the operation of the error control mechanisms (Heartbeat/Node Guarding).
Remedy:
Check master configuration times and correct. Address network communication lag or noise.
