Mitsubishi Electric MELSECQ Series User Manual page 153

8 OPR CONTROL
Machine OPR control start
(Positioning start signal: Y8 to YF)
OPR request flag
Md.7 Status: b0
OPR complete flag
Md.7
Deviation counter clear output
Md.4
Md.2
Md.1
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Restrictions
(1) Always limit the motor torque after the " OPR. 5 Creep speed" is reached. If the
torque is not limited, the motor may fail when the machine presses against the
stopper. (Refer to section "12.4.2 Torque limit function".)
(For a torque limit, refer to the manual of the drive unit used.)
Precautions during operation
(1) Set a value in the "OPR. 9 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 following is the operation performed if "OPR. 9 OPR dwell time" elapses
during deceleration from "OPR. 4 OPR speed".
V
ON
OFF
ON
OFF
OFF
Status: b1
Axis operation status
Standby During OPR
Movement amount after
0
Unfixed
near-point dog ON
Current feed value
Unfixed Traveled value is stored
Fig. 8.5 Operation when the dwell time elapses during deceleration from the OPR speed
(3) If the axis is started during near-point dog ON, it starts at "OPR. 5 Creep
speed".
(4) If the axis stop signal is turned ON during operation performed at "OPR. 4
OPR speed", the axis decelerates to a stop at the time set in "OPR. 7 DEC/
STOP time at OPR".
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OPR.4 OPR speed
Pr.6 Bias speed at start
Torque limit
ON
Near-point dog
OFF
MELSEC-Q
Deceleration started when near-point dog turns ON
Dwell time-out during deceleration
OPR.5 Creep speed
Stopper
t
OPR dwell time-out
OPR dwell time counting
ON
Pr.8 Deviation counter clear signal output time
Standby
OP address
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