370
Unlimited Feeding
Section 6-20
shortened using the S curve if there is a leeway in the maximum acceleration
speed.
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.
6-20 Unlimited Feeding
Overview
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
Acceleration
time
Constant
speed time
Deceleration
time
Speed
Time
Speed
Time
This portion
Summary of Contents for CS1W-MC221 -
Page 1: ...Motion Control Units Cat No W359 E1 04 CS1W MC221 V1 421 V1 OPERATION MANUAL ...
Page 2: ...CS1W MC221 V1 421 V1 Motion Control Units Operation Manual Revised February 2008 ...
Page 3: ...iv ...
Page 5: ...vi ...
Page 11: ...xii ...
Page 15: ...xvi ...
Page 19: ...xx ...
Page 27: ...xxviii Conformance to EC Directives 6 ...
Page 133: ...106 Installation Section 2 2 2 2 4 Dimensions CS1W MC421 CS1W MC221 ...
Page 173: ...146 Connecting Peripheral Devices Section 2 7 ...
Page 227: ...200 Command Area Section 3 6 ...
Page 351: ...324 Interface Specifics Section 5 4 ...
Page 513: ...486 Absolute Encoder Interface Specifications Section 9 7 ...
Page 575: ...548 Error Log Section 12 6 ...
Page 589: ...562 Performance Appendix A ...
Page 655: ...628 Control Bit Flag Timing Charts Appendix E ...
Page 683: ...656 Origin Search Patterns Appendix F ...
Page 685: ...658 Encoder Divider Rate and Rotation Speed for OMRON Servo Drivers Appendix G ...