Mitsubishi MELSEC-Q QD77MS, Руководство пользователя

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Chapter 5 Data Used for Positioning Control
OPR method
0 : Near-point dog method
(1) Start machine OPR.
(Start movement at the "
Pr.46
OPR speed" in the
" Pr.44 OPR direction".)
(2) Detect the near-point dog ON, and start deceleration.
(3) Decelerate to "
Pr.47
Creep speed", and move with the
creep speed.
(At this time, the near-point dog must be ON. If the near-
point dog is OFF, the axis will decelerate to a stop.)
(4) At the first zero signal after the near-point dog turned OFF,
machine OPR is completed.
Note) After the home position return (OPR) has been
started, the zero point of the encoder must be passed
at least once before point A is reached.
However, if selecting "1: Not need to pass motor Z-
phase after the power supply is switched on." with
"Function selection C-4 (PC17)", it is possible to carry
out the home position return (OPR).
A
t
V
ON
(1)
(2)
(3)
(4)
Near-point dog OFF
Zero signal
Pr.47
Creep speed
OPR speed
Pr.46
4 : Count method 1)
(1) Start machine OPR.
(Start movement at the "
Pr.46
OPR speed" in the
"
Pr.44
OPR direction".)
(2) Detect the near-point dog ON, and start deceleration.
(3) Decelerate to "
Pr.47
Creep speed", and move with the
creep speed.
(4) After the near-point dog turns ON and the movement
amount set in " Pr.50 Setting for the movement amount
after near-point dog ON" has passed, the QD77MS stops
with the first zero signal, and the machine OPR is
completed.
Note) After the home position return (OPR) has been started,
the zero point of the encoder must be passed at least
once before point A is reached.
However, if selecting "1: Not need to pass motor Z-phase
after the power supply is switched on." with "Function
selection C-4 (PC17)", it is possible to carry out the home
position return (OPR).
A
t
V
ON
(4) (3)
(2)
(1)
Near-point dog OFF
Zero signal
OPR speed
Pr.46
Pr.47 Creep speed
Pr.50
Setting for the movement
amount after near-poing dog ON
First zero signal after moving the
movement amount after near-
point dog ON
Movement amount after
near-point dog ON
Md.34
The near-point dog must turn OFF
at a sufficient distance away from
the OP position.