Mitsubishi Electric MELSECQ Series User Manual page 157

8 OPR CONTROL
Zero signal
Torque limit
Machine OPR control start
(Positioning start signal: Y8 to YF)
OPR request flag
Md.7
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.
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) If the zero signal is input before the workpiece stops at the stopper, the
workpiece will stop at that position, and that position will become the OP.
V
ON
OFF
ON
OFF
Status: b0
OFF
Status: b1
Axis operation status Standby During OPR
Movement amount after
Unfixed 0
near-point dog ON
Unfixed Traveled value is stored
Current feed value
Fig. 8.9 When the zero signal is input before the stop at the stopper
(2) If the axis is started during zero signal ON, the "Zero signal ON" error (error
code: 202) occurs.
search engine
OPR.5
Creep speed
Pr.6
Bias speed at start
MELSEC-Q
t
ON
Pr.8 Deviation counter clear signal output time
Standby
OP address
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