Rockwell Automation GMLC Reference Manual - Manual (Page 218)

Publication GMLC-5.2 - November 1999
Motion Settings 181
Setting the Motion Profile
You can also use the Motion Settings block to set the type of motion
profile used with all subsequent Move or Jog Axis blocks for the selected
axis. It does not change the power-up profiles for the axis set in the
motion controller’s application setup menu, but merely changes the
current working profile selection.
The motion controllers provide trapezoidal (linear acceleration and
deceleration), S curve (controlled jerk), and parabolic velocity profiles. A
guide to the effects of these three motion profiles on various application
requirements follows:
Note: For more information on motion profiles, see the “Defining
Position” section of the “Configuring Axis Use” chapter in this
manual.
Setting the Maximum Speed
You can use the Motion Settings block to set the 100% velocity value for
all subsequent Move or Jog Axis blocks for the selected axis. This does
not change the power-up maximum velocity value for the axis set in the
motion controller’s servo setup menu, but changes only the current
working value.
Setting the Maximum Acceleration
You can use the Motion Settings block to set the 100% acceleration value
used with all subsequent Move or Jog Axis blocks for the selected servo
axis. This does not change the power-up maximum acceleration value for
the axis set in the motion controller’s servo setup menu, but changes only
the current working value.
Velocity
Profile Acc/Dec
Time Motor
Stress
Mechanical Stress
Trapezoidal Fastest Worst Worst
S-Curve 2X slower Better Best
Parabolic 2X slower Best Better