Mitsubishi A1SD75P1-S3, User Manual

Page: 144 / 622

5 - 47
MELSEC-A
5 DATA USED FOR POSITIONING CONTROL
4 : Count method 1)
(1) Start machine zero point return.
(Start movement at the " Pr.48 Zero point return speed" in
the " Pr.46 Zero point return direction".)
(2) Detect the near-point dog ON, and start deceleration.
(3) Decelerate to " Pr.49 Creep speed", and move with the
creep speed.
(4) After the near-point dog turns ON and the movement
amount set in " Pr.52 Setting for the movement amount
after near-point dog ON" has passed, the pulse output from
the AD75 stops with the first zero point signal (single-pulse
output per motor revolution), and the machine zero point
return is completed.
t
V
ON
(4)
(3)
(2)
(1)
Near-point dog OFF
Zero point signal
Zero point
return speed
Pr.48
Pr.49 Creep speed
Pr.52
Setting for the movement
amount after near-poing dog ON
First zero point after moving the
movement amount after near-
point dog ON
Movement amount after
near-point dog ON
Md.44
The near-point dog must turn OFF
at a sufficient distance away from
the zero point position.
5 : Count method 2)
(1) Start machine zero point return.
(Start movement at the " Pr.48 Zero point return speed" in
the " Pr.46 Zero point return direction".)
(2) Detect the near-point dog ON, and start deceleration.
(3) Decelerate to " Pr.49 Creep speed", and move with the
creep speed.
(4) After the near-point dog turns ON and the movement
amount set in " Pr.52 Setting for the movement amount
after near-point dog ON" has passed, the pulse output from
the AD75 stops, and the machine zero point return is
completed.
t
V
ON
(1)
(2)
(3)
(4)
Near-point dog OFF
Movement amount after
near-point dog ON
Md.44
Zero point
return speed
Pr.48
Pr.49 Creep speed
Pr.52
Setting for the movement
amount after near-poing dog ON
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