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112
ACCELERATION CONTROL: ACC(888)
Section 5-8
■
Continuous Mode Speed Control
Pulse output will continue until it is stopped from the program.
Note
Pulse output will stop immediately if the CPU Unit is changed to PROGRAM
mode.
Operation
Purpose
Application
Frequency changes
Description
Procedure/
instruction
Starting
pulse output
To output
with speci-
fied accel-
eration and
speed
Accelerating the
speed (frequency)
at a fixed rate
Outputs pulses and
changes the fre-
quency at a fixed
rate.
ACC(888)
(Continu-
ous)
Changing
settings
To change
speed
smoothly
Changing the
speed smoothly
during operation
Changes the fre-
quency from the
present frequency
at a fixed rate. The
frequency can be
accelerated or
decelerated.
ACC(888) or
SPED(885)
(Continu-
ous)
↓
ACC(888)
(Continu-
ous)
Changing the
speed in a
polyline curve
during operation
Changes the accel-
eration or decelera-
tion rate during
acceleration or
deceleration.
ACC(888)
(Continu-
ous)
↓
ACC(888)
(Continu-
ous)
Pulse frequency
Target frequency
Present frequency
Execution of
ACC(888)
Time
Acceleration/
deceleration
rate
Pulse frequency
Target frequency
Present frequency
Acceleration/
deceleration
rate
Execution of
ACC(888)
Time
Pulse frequency
Target frequency
Present frequency
Acceleration rate n
Acceleration
rate 2
Acceleration
rate 1
Execution of ACC(888)
Execution of ACC(888)
Execution of ACC(888)
Time
Summary of Contents for CJ1M-CPU21
Page 1: ...Cat No W395 E1 03 CJ series Built in I O CJ1M CPU21 22 23 CJ1M CPU Units...
Page 2: ...CJ series Built in I O CJ1M CPU21 22 23 CPU Units Operation Manual Revised August 2004...
Page 3: ...iv...
Page 19: ...xx...
Page 79: ...50 Wiring Examples Section 3 3...
Page 217: ...188 Origin Search and Origin Return Functions Section 6 3...
Page 220: ...191 Built in Outputs Section 7 1...
Page 247: ...218 Built in Outputs Section 7 1...
Page 251: ...222 Combinations of Pulse Control Instructions Appendix A...
Page 255: ...226 Using Pulse Instructions in other CPU Units Appendix B...
Page 263: ...234 Index...
Page 265: ...236 Revision History...