Mitsubishi MELSEC-Q Series User Manual page 173

8
OPR CONTROL
(2) Restrictions
(a) Always set torque limit to the motor.
(b) Use an external input signal as the zero signal.
(3) Precautions during operation
(a) When the zero signal is input before the workpiece is stopped by the stopper, the
V
Creep speed
Pr.14
Zero signal
Torque limit
OPR control start (Positioning
start signal: Y8 to YA)
OPR request flag
( Status: b1)
Md.7
OPR complete flag
( Md.7 Status: b2)
Deviation counter clear
output
Md.4 Axis operation status
Md.1 Current feed value
Figure 8.8 When the zero signal is input before the workpiece is stopped by the stopper
(b) If the axis is started during zero signal ON, "Zero signal ON" error (error code:
If the torque limit is not set, the motor may be a failure when the workpiece
contacts against the stopper.
(For torque limit, refer to the manual for the drive unit.)
workpiece stops, and the stop position will become the OP.
ON
OFF
ON
OFF
Standby During OPR
Unfixed Moved value is stored.
202) occurs.
Deviation counter clear
Pr.7
output time
Standby
OP address
Pr.12
8.2 Machine OPR Control
8.2.4 OPR method (2): Stopper 3
1
2
3
4
t
5
6
7
8
8
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