Yaskawa MP940 Bedienungsanleitung Seite 469

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Seitenansicht 468
11.4
Position Control Using Motion Commands
11-67
11
3. The axis travels at rapid traverse speed in the forward direction.
4. The axis decelerates at the falling edge of the dog (deceleration limit switch) signal.
5. The axis travels at approach speed in the reverse direction.
6. The axis decelerates at the rising edge of the dog (deceleration limit switch) signal.
7. The axis travels at creep speed in the forward direction.
8. After the falling edge of the dog (deceleration limit switch) is detected, the axis stops
after traveling only the zero point return final travel distance (OLC02A) from the initial
zero point signal, and that position will be the machine coordinate system zero point.
Zero Point Return Operation Started and Interval (c) Used
1. The axis travels at approach speed in the reverse direction.
2. The axis decelerates at the rising edge of the dog (deceleration limit switch) signal.
3. The axis travels at creep speed in the forward direction.
4. After the falling edge of the dog (deceleration limit switch) is detected, the axis stops
after traveling only the zero point return final travel distance (OLC02A) from the initial
zero point signal, and that position will be the machine coordinate system zero point.
Zero Point Return Operation Started and Intervals (d) & (e) Used
1. The axis travels at approach speed in the reverse direction.
2. The axis decelerates at the rising edge of the dog (deceleration limit switch) signal.
0
3.
2.
1.
4.
Reverse Forward←→
Zero point
Speed
reference
Creep speed
Zero point return
position
Time
Approach
speed
Zero point return final
travel distance
Zero point signal
(Phase-C pulse)
Dog (Decelera-
tion limit switch)
0
3.
2.
1.
4.
Reverse Forward←→
Zero point
Speed
reference
Creep speed
Zero point return
position
Time
Approach
speed
Zero point return final
travel distance
Zero point signal
(Phase-C pulse)
Dog (Deceleration
limit switch)
Seitenansicht 468
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