Invalid communication phase shutdown
Indramat · Indradrive
What does F4003 mean?
The IndraDrive detected an invalid communication phase in its bus communication. This means the communication process is not progressing through the expected states (e.g., initialization, pre-operational, operational) in the correct order, often due to an unexpected command or communication failure.
Common Causes
- Incorrect communication configuration in the master controller or drive.
- Communication parameters mismatch (e.g., SERCOS ring configuration).
- Bus communication interruption or packet loss.
- Timing issues in the communication sequence.
- Firmware bug affecting communication state machine.
Repair Steps & Checklist
Click steps to track your progress.
- 1
Verify the communication configuration parameters in both the IndraDrive and the master controller (e.g., SERCOS master configuration, cycle times).
- 2
Check the physical communication bus for integrity, proper termination, and absence of noise.
- 3
Ensure that the master controller is sending valid and correctly timed communication phase commands.
- 4
Perform a restart of both the master controller and the IndraDrive.
- 5
Consult the communication protocol manual (e.g., SERCOS, EtherCAT) for detailed phase progression requirements.