Mitsubishi Electric MELSEC-L LD75D, User Manual

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(2) 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. (For details, refer to Torque limit function
(

Page 532, Section 12.4.2).)
• Use an external input signal as the zero signal.
(3) Precautions during operation
• Input a zero signal from an external source after the machine presses against the stopper. The workpiece
will continue decelerating and stop if a zero signal is input before deceleration to the "[Pr.47] Creep speed".
An error "OP detection timing fault (error code: 204)" will occur after the machine stops.
t
OPR speed
Creep speed
V
Zero signal
ON
OFF
ON
OFF OPR request flag
OFF OPR complete flag
Standby OPR
Inconsistent 0 Movement amount
after near-point dog ON
Inconsistent Value the machine moved is stored
Current feed value
Near-point dog
ON
OFF
Error
Address at stop
Md.34
Md.20
Md.21
Pr.46
Pr.47
Status : b3
Status : b4 Md.31
Md.31
Md.26
Stopper
Machine feed value
Machine OPR start
(Positioning start signal)
[Y10,Y11,Y12,Y13]
Axis operation status