Mitsubishi Electric QD75P1N User Manual page 308

8 OPR CONTROL
Machine OPR start
(Positioning start signal)
[Y10,Y11,Y12,Y13]
OPR request flag
Status : b3
Md.31
OPR complete flag
Md.31 Status : b4
Axis operation status
Md.26
Md.34 Movement amount
after near-point dog ON
Md.20 Current feed value
Md.21 Machine feed value
Fig. 8.5 Operation when the dwell time elapses during deceleration from the OPR speed
Restrictions
Always limit the servomotor torque after the " Pr.47 Creep speed" is reached. If the
torque is not limited, the servomotor may fail when the machine presses against the
stopper. (Refer to Section 12.4.2 "Torque limit function".)
Precautions during operation
(1) Set a value in the " Pr.49 OPR dwell time" that is equal to or higher than the
movement time from the near-point dog ON to the time the machine presses against
the stopper.
(2) The workpiece will continue decelerating and stop if the " Pr.49 OPR dwell time"
elapses during deceleration from the " Pr.46 OPR speed", thus causing an error
"Dwell time fault" (error code: 205).
V
ON
OFF
ON
OFF
OFF
Standby OPR
Inconsistent
0
Inconsistent Value the machine moved is stored
Pr.46 OPR speed
" Pr.49
Error
Address at stop
8 - 10
MELSEC-Q
Pr.47 Creep speed
Stopper
t
OPR dwell time" setting