Zero Point Return Method (5): Count Method 3) - Mitsubishi A1SD75M3 User Manual

8 ZERO POINT RETURN CONTROL

8.2.7 Zero point return method (5): Count method 3)

The machine zero point return is started.
1) (The machine starts acceleration designated in "
designated in "
At detection of the near-point dog ON, the machine decelerates to "
2)
speed.
The machine decelerates to a stop in the position where the movement amount set to "
3)
amount after near-point dog ON" is reached.
After stopping, the machine moves by the amount of one servomotor revolution at "
4)
direction opposite to the designated zero point return direction.
The machine moves at "
machine zero point return in the position of the first zero point following the movement of the movement amount set to
5)
" Setting for the movement amount after near-point dog ON" after near-point dog ON.
Pr.52
(At this time, the machine does not decelerate to "
Near-point dog
Fig. 8.10 Operation performed when the zero point is not passed in the count method 3)
When the zero point is passed from a machine zero point return start until the machine
moves the movement amount set to " Pr.52 Setting for the movement amount after
near-point dog ON", the operation outline of the zero point return method "count
method 3)" is the same as that of the zero point return method (1) "count method 1)".
(Refer to section 8.2.5.)
The following shows the operation outline of the case where the zero point is not
passed from a machine zero point return start until the machine moves the movement
amount set to " Pr.52 Setting for the movement amount after near-point dog ON".
Operation chart
Zero point return direction", and moves at "
Pr.46
Zero point return speed" in the designated zero point return direction, and completes the
Pr.48
Speed
Zero point
Pr.48
return speed
1)
OFF
Zero point
Zero point return acceleration time selection" in the direction
Pr.53
Pr.48
Pr.49
Creep speed" when the near-point dog turns from OFF to ON.)
Pr.49
Pr.52 Setting for the movement amount
after near-point dog ON
5)
2)
3)
4)
ON
Zero point not passed
8 - 16
Zero point return speed".)
Creep speed", and then moves at the creep
Setting for the movement
Pr.52
Zero point return speed" in the
Pr.48
Pr.49
Creep speed
Zero point return
direction
Turn OFF the near-point dog
sufficiently away from the
zero point position.
MELSEC-A