Unlimited Feeding - Omron CS1W-MC221 - 02-2008 Operation Manual

Unlimited Feeding

6-20 Unlimited Feeding
Overview
370
shortened using the S curve if there is a leeway in the maximum acceleration
speed.
Speed
Acceleration
time
Note If the acceleration time or the deceleration time is the same, the maximum
acceleration in the S curve is 1.5 times that in the trapezoidal curve. There-
fore, when using a program set for a trapezoidal curve for an S curve, the
acceleration and deceleration times set for the trapezoidal curve must be mul-
tiplied by 1.5. The maximum acceleration in the S curve will then fall within the
acceleration set for the trapezoidal curve, allowing the motor to be driven
smoothly.
The S curve used by the MC Unit uses a tertiary function, as shown in the fol-
lowing diagram.
Mode: Automatic or Manual; Method: System parameters (CX-Motion only)
The unlimited feeding function makes it possible to control axes for applica-
tions such as turntables or one-direction conveyers, which require unlimited
feeding. With axes set for unlimited feeding, the present position can be
updated for any set range. In the case of a turntable, for example, the present
Constant
Deceleration
speed time
time
Speed
This portion
Section 6-20
Time
Time