Cause : Following error in motion- This alarm comes when the following error limit for motion was exceeded during a traversing movement:

• Following error monitoring - in motion (machine data 15) was entered incorrectly.
• The mechanical system cannot follow the commands of the position controller.
• Actual position value invalid
• Incorrect optimization of the position controller or speed controller.
• The mechanical system is sluggish or blocked.

Follow these steps to correct the alarm:

1. Check and correct the machine data.
2. Check the actual position value (speed- controlled operation); check position encoder, evaluator module and encoder lead.
3. Optimize the position controller or the speed controller.
4. Check the mechanical system.