Opr Method (2): Stopper Method 1) - Mitsubishi Electric MELSEC-L LD75P User Manual

8.2.4

OPR method (2): Stopper method 1)

The following shows an operation outline of the "stopper method 1)" OPR method.
(1) Operation chart
1.
The machine OPR is started. (The machine begins the acceleration designated in "[Pr.51] OPR
acceleration time selection", in the direction designated in "[Pr.44] OPR direction". It then moves
at the "[Pr.46] OPR speed" when the acceleration is completed.)
2.
The machine begins decelerating when the near-point dog ON is detected.
3.
The machine decelerates to the "[Pr.47] Creep speed", and subsequently moves at that speed.
(Torque limiting is required at this time. If the torque is not limited, the servomotor may fail in step
4).)
4.
The machine presses against the stopper at the creep speed and stops.
5.
The pulse output from the LD75 will stop when the "[Pr.49] OPR dwell time" has elapsed after the
near-point dog turns ON, outputting the "deviation counter clear output" to the drive unit. (A
"deviation counter clear signal output time" is set in [Pr.55].)
6.
After a "deviation counter clear signal" is output to the drive unit, the OPR complete flag ([Md.31]
Status: b4) turns from OFF to ON and the OPR request flag ([Md.31] Status: b3) turns from ON to
OFF.
CHAPTER 8 OPR CONTROL
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