Mitsubishi Electric MELSEC-Q QD75M User Manual page 140

5 DATA USED FOR POSITIONING CONTROL
4 : Count method 1)
(1) Start machine OPR.
(Start movement at the "
Pr.44
" OPR direction".)
(2) Detect the near-point dog ON, and start deceleration.
(3) Decelerate to "
creep speed.
(4) After the near-point dog turns ON and the movement
amount set in "
after near-point dog ON" has passed, the QD75 stops with
the first zero signal, and the machine OPR is completed.
Note) After the servo amplifier turned on, the zero point of the
encoder must be passed at least once before point A is
reached.
5 : Count method 2)
(1) Start machine OPR.
(Start movement at the "
Pr.44
" OPR direction".)
(2) Detect the near-point dog ON, and start deceleration.
(3) Decelerate to "
creep speed.
(4) After the near-point dog turns ON and the movement
amount set in "
after near-point dog ON" has passed, machine OPR is
completed.
6 : Data set method
The position where the machine OPR has been made will be the OP.
(Perform after the servo amplifier has been turned ON and the servomotor has been rotated at least once using the
JOG or similar operation.)
Pr.46
OPR speed" in the
Pr.47
Creep speed", and move with the
Pr.50
Setting for the movement amount
Pr.46
OPR speed" in the
Pr.47
Creep speed", and move with the
Pr.50
Setting for the movement amount
V
OPR speed
Pr.46
(1)
Near-point dog OFF
Zero signal
V
Pr.46
(1)
Near-point dog OFF
5 - 49
MELSEC-Q
Pr.50
Setting for the movement
(2)
amount after near-poing dog ON
Pr.47 Creep speed
(3) (4)
t
A
Movement amount after
Md.34
near-point dog ON
The near-point dog must turn OFF
at a sufficient distance away from
ON
the OP position.
First zero signal after moving the
movement amount after near-
point dog ON
OPR speed
Pr.50
(2)
Setting for the movement
amount after near-poing dog ON
Pr.47 Creep speed
(3)
(4)
t
Movement amount after
Md.34
near-point dog ON
ON