Reference Manual Owner's manual

Publication GMLC-5.2 - November 1999

74 Configuring Axis Use

Parabolic

You will most frequently use a parabolic velocity profile to optimize the

motor selection, because it conforms most closely to the torque/speed

curve for most motors. However, the parabolic velocity profile sacrifices

acceleration and deceleration time compared to the trapezoidal profile. In

addition, the speed (velocity) of parabolic motion cannot be changed once

the motion is started—except to zero—and the same acceleration and

deceleration rate must be used. (Any deceleration value is ignored in

subsequent Move or Jog Axis blocks.)

To configure the Positioning page, make entries in the following fields:

Move

Select the default motion profile for servo axis motion commanded by a

Move Axis block:

• Trapezoidal

•S-Curve

Velocity

Time

Jerk

Accel

Time