Mitsubishi QD75P1N User Manual

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MELSEC-Q
12 CONTROL SUB FUNCTIONS
12.6 Absolute position restoration function
!
CAUTION
An absolute position restoration by the positioning function may turn off the servo-on signal (servo off) for
approximately 60ms + scan time, and the motor may run unexpectedly. If this causes a problem, provide an
electromagnetic brake to lock the motor during absolute position restoration.
The "absolute position restoration function" is a function to restore the absolute position
of the designated axis by the absolute position detection system. By this function, the
OPR after power OFF such as instantaneous power interruption and emergency stop
is not required, and the restoration operation at site can be carried out easily.
The details of the "absolute position restoration function" are described below.
[1] Configuration and preparation of absolute position detection system
[2] Outline of absolute position detection data communication
[3] Absolute position signal transmission procedure
[4] Control precautions
[1] Configuration and preparation of absolute position detection system
(1) Configuration
The following drawing shows the configuration of the absolute position
detection system.
Servo
amplifier
Power
supply
Detector cable
Control signal connector
1)
2)
3)
4)
Programmable
controller system
QCPU
QD75
I/O
module
Operation
panel
Servomotor with absolute position detector
Absolute position holding battery
Fig. 12.36 Configuration of absolute position detection system

Mitsubishi QD75P1N Specifications

General

Brand	Mitsubishi
Model	QD75P1N
Category	Controller
Language	English