Fully-Closed Control - Omron R88M-K Series User Manual

5-6 Fully-closed Control

Outline of Operation
 An externally provided encoder is used to directly detect the position of the control target and
feedback the detected machine position to perform position control. This way, controls can be
performed without being affected by ball screw error, temperature changes, etc. You can achieve
highly accurate positioning by configuring a fully-closed control system.
Controller
(pulse train output type)
Position Control Unit
CJ1W-NC113/133
CJ1W-NC213/233
CJ1W-NC214/414
CJ1W-NC234/434 Pulse train
CJ1W-NC413/433
CS1W-NC113/133
CS1W-NC213/233
CS1W-NC413/433
CPU Unit with built-in
pulse I/O
CJ1M-CPU21/22/23
CP1H-X/XA/Y
CP1L-M/L
Precautions for Correct Use
You cannot connect an external encoder with absolute encoder specifications.
OMNUC G5-SERIES AC SERVOMOTOR AND SERVO DRIVE USER'S MANUAL
Drive
OMNUC G5
CN1 Fully-closed Control Mode
+CWLD
44
Electronic gear
(Pn008 to Pn010)
−CWLD
45
Numerator
+CCWLD
46
Denominator
−CCWLD
47
+CW
3
−CW
4
+CCW
5
−CCW
6
External Encoder Dividing Ratio
(Pn324 to Pn325)
Numerator
Denominator
5-6 Fully-closed Control
Motor
OMNUC G5
CN4
+EXS
−EXS
+EXA
Position
−EXA
detection
External
+EXB
encoder
−EXB
+EXZ
−EXZ
5
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