Motor Pull Out or Step Out Detection

What does STo mean?

The motor has exceeded its pull-out torque, resulting in a motor pull-out or step-out condition. This can be caused by an incorrect motor code for PM motors, an excessively heavy load, high load inertia, or acceleration/deceleration times that are too short for the system's dynamics.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Increase the acceleration and deceleration times (C1-01 through C1-08) and/or increase the S-curve acceleration and deceleration times (C2-01).