Yaskawa Sigma-5 User Manual: Setup for Linear Motors - Manual (Page 162)

5 Trial Operation (Checking Linear Servomotor Operation)
5-26
Note:
• Unsuccessful Trial Operations
An unsuccessful trial operation could be attributed to the following conditions. Check
the conditions and take appropriate measures.
• The force reference is saturated because the load is too heavy, or the jog speed is too
fast.
Lower the jog speed or lighten the load.
• The linear servomotor is moving slightly and then stops.
The linear servomotor and linear scale are not in agreement. Check the wiring, scale
pitch setting, linear scale count, and whether the motor forward direction matches the
scale count direction.
• Polarity detection is not being performed normally.
Refer to 5.5 Polarity Detection to execute the polarity detection.