Mitsubishi Electric QD70D4 User Manual page 171

8 OPR CONTROL
Zero signal
Torque limit
Machine OPR control start
(Positioning start signal: Y8 to YF)
OPR request flag
Md.7 Status: b0
OPR complete flag
Md.7 Status: b1
Deviation counter clear output
Axis operation status
Md.4
Md.2 Movement amount after
near-point dog ON
Md.1 Current feed value
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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
Pr.6 Bias speed at start
ON
OFF
ON
OFF
OFF
Standby During OPR
Unfixed 0
Unfixed Traveled value is stored
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.
OPR.5
Creep speed
t
ON
Deviation counter clear signal output time
Pr.8
Standby
OP address
MELSEC-Q
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