Mitsubishi Electronics QD75P, QD75D user manual OP shift function, OP shift operation

12CONTROL SUB FUNCTIONS

12.2.2 OP shift function

MELSEC-Q

When a machine OPR is carried out, the OP is normally established using the near- point dog, stopper, and zero signal. However, by using the OP shift function, the machine can be moved a designated movement amount from the position where the zero signal was detected. A mechanically established OP can then be interpreted at that point.

The OP shift function can be used without relation to " Pr.43 OPR method".

The details shown below explain about the "OP shift function".

[1]Control details

[2]Setting range for the OP shift amount

[3]Movement speed during OP shift

[4]Precautions during control

[5]Setting the OP shift function

[1]Control details

The following drawing shows the operation of the OP shift function.

Pr. 46 OPR speed

Machine OPR start

Pr. 44 OPR direction

Speed selected by the " Pr. 56 Speed designation during OP shift"

Pr.47 Creep speed

Pr.53 OP shift amount Shift operation carried out after

the deviation counter clear and reset.

Near-point dog

Zero signal

Fig. 12.4 OP shift operation

12 - 8