Cause : Control word timeout comes when there is no communication to the drive. The warning is only active when P 5.2.16 Watchdog Response is NOT set to [0] Off. If P 5.2.16 Watchdog Response is set to [5] Stop and trip, a warning appears, and the drive ramps down to a stop and shows an fault.

• Check the connections on the serial communication cable.
• Increase P 5.2.17 Watchdog Delay.
• Check the operation of the communication equipment.
• Verify that proper EMC installation was performed.