Mitsubishi GX Configurator-PT, User Manual

Page: 138 / 224

8 - 9 8 - 9
MELSEC-Q
8 OPR CONTROL
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.
(For a torque limit, refer to the manual of the drive unit used.)
(2) Use an external input signal as the zero signal.
Precautions during operation
(1) Input a zero signal from an external source after the machine presses against
the stopper.
The following is the operation performed if the zero signal is input before
deceleration to "OPR. 5 Creep speed".
t
OPR control start
(Positioning start signal: Y8 to YF)
ON
OFF
OPR speed
Creep speed
Torque limit
ON
OFF
OFF
ON
Standby During OPR Standby
Axis operation status
Unfixed 0 Movement amount after
near-point dog ON
Traveled value is stored
OP address
Current feed value
V
Near-point dog
ON
OFF
Stopper
Zero signal
Deviation counter clear output
OPR request flag
Status: b0 Md.7
Md.4
Md.2
Md.1
OPR.4
OPR.5
Deviation counter clear signal output time Pr.8
Zero signal input during deceleration
Bias speed at start Pr.6
Deceleration started when near-point dog turns ON
OPR complete flag
Status: b1 Md.7
Unfixed
Fig. 8.7 Operation performed if zero signal is input before deceleration to creep speed
(2) The near-point dog must be turned ON until it presses against the stopper.
(3) If the axis is started during near-point dog ON, it starts at "OPR. 5 Creep
speed".
(4) If the axis is started during zero signal ON, the "Zero signal ON" error (error
code: 202) occurs.
(5) 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".