Mitsubishi Electric QD75MH1 User Manual page 562

12 CONTROL SUB FUNCTIONS
1) When the direction from the workpiece to the OP is the same as the "
normal machine OPR is carried out.
Hardware lower limit switch
2) When the direction from the workpiece to the OP is the opposite direction from the "
direction", the operation carries out a deceleration stop when the near-point dog turns OFF, and
then carries out a machine OPR in the direction set in "
Hardware lower limit switch
In the a
REMARK
•
When the "0: Positive direction" is selected in "
set to the limit switch in the OPR direction.
•
When the "1: Negative direction" is selected in "
set to the limit switch in the OPR direction.
•
If inverting the install positions of upper/lower limit switches, hardware stroke limit function cannot
be operated properly.
If problem is found when "
limit switch are checked.
(2) OPR retry operation when the workpiece is outside the range between the
upper and lower limits.
Machine OPR start
Pr. 44 OPR direction
Near-point dog
Pr. 44 OPR direction
Near-point dog
bove example 1) and 2), "0: Positive direction" is set in " Pr.44 OPR direction"
Rotation direction selection" and the wiring for the upper/lower
Pr.114
Fig. 12.2 OPR retry operation from on limit (limit signal OFF)
Zero signal
Movement range
Pr.44
Zero signal
Movement range
OPR direction", the upper limit switch is
Pr.44
OPR direction", the lower limit switch is
Pr.44
12 - 5
MELSEC-Q
OPR direction", a
Pr.44
OP
Hardware upper limit switch
Pr.44
OPR direction".
Machine OPR start
OP
Hardware upper limit switch
OPR