Motion Error Codes, faults, and attributes
Rockwell Automation Publication MOTION-RM002H-EN-P-February 2018 619
Cause
When you use an S-curve profile, jerk determines how fast an axis can change its
acceleration and deceleration.
• An S-curve profile has to get acceleration to zero before the axis can speed
up again.
• The axis continues to slow down until the S-curve profile brings the
acceleration to zero.
The following trends show how the axis stops and starts with a trapezoidal profile
and an S-curve profile.
Stop while decelerating
Trapezoidal
The axis speeds back up as soon as you start the jog
again.
S-curve
The axis continues to slow down until the S-curve
profile brings the acceleration rate to zero.
Corrective Action
If your controller is this revision
Then Result
15 or earlier Increase the deceleration rate of the Motion
Axis Jog (MAJ) instruction that starts the jog.
This increases the deceleration jerk. The axis stops the deceleration
sooner at the higher deceleration jerk.
16 or later Increase the deceleration jerk of the Motion
Axis Jog (MAJ) instruction that starts the jog.
The axis stops the deceleration sooner at the higher deceleration jerk.
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