Mitsubishi Melsec-Q QD75P1 User Manual page 481

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.
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 "
Note) The above figures (a) and (b) are examples where "
direction". When "0: Positive direction" is set in
OPR direction acts as the upper limit. When "1: Negative direction" is set in
the limit switch placed in the OPR direction acts as the lower limit. Incorrect wiring of these limit
switches may cause improper OPR retry operation. If any malfunction is identified, check and
correct "
(2) OPR retry operation when the workpiece is outside the range between the
upper and lower limits.
Machine OPR start
Pr. 44 OPR direction
Lower limit
Pr. 44 OPR direction
Lower limit
Rotation direction setting" and the wiring.
Pr.6
Fig. 12.2 OPR retry operation from on limit (limit switch OFF)
Near-point dog
Zero signal
Movement range
Pr.44
Near-point dog
Zero signal
Movement range
Pr.44
Pr.44
, check that the limit switch placed in the
12 - 5
MELSEC-Q
OPR direction", a
Pr.44
OP
Upper limit
OPR direction".
Machine OPR start
OP
Upper limit
OPR direction" is set to "0: Positive
Pr.44
OPR
Pr.44
, check that