Vacon · NXP AFE-II Drive
The data connection between the fieldbus Master and the fieldbus option board installed in Slot E has been broken. This results in a loss of communication with the control system.
Click steps to track your progress.
Inspect the fieldbus cable connected to the option board in Slot E for damage and ensure it is securely connected.
Verify correct fieldbus termination resistors are installed at both ends of the fieldbus segment.
Check the fieldbus address parameter (e.g., P6-03) on the drive to ensure it matches the fieldbus master's configuration.
Observe diagnostic LEDs on the fieldbus option board in Slot E for status indications (e.g., link status, error codes).
Use a fieldbus network analyzer tool to diagnose signal integrity and message traffic on the affected bus segment.
Swap the fieldbus option board in Slot E with a known-good board to determine if the board itself is defective.