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5 DATA USED FOR POSITIONING CONTROL
1 : Stopper 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.
Pr.54
(At this time "
the torque is not limited, the servomotor could be damaged
in step (4).)
(4) The axis contacts against the stopper at "
speed", and then stops.
(5) When the near-point dog turns ON and the "
dwell time" is passed, the pulse output from the QD75
stops, and the machine OPR is completed.
2 : Stopper 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.
Pr.54
(At this time "
the torque is not limited, the servomotor could be damaged
in step (4).)
(4) The axis contacts against the stopper at "
speed", and then stops.
(5) After stopping, the pulse output from the QD75 stops with
the zero signal (signal that is output on detection of contact
with the stopper. Input externally), and the machine OPR is
completed.
3 : Stopper method 3)
(1) Start machine OPR.
(Start movement at the "
Pr.44
"
OPR direction". At this time "
limit value" is required. If the torque is not limited, the
servomotor could be damaged in step (2).)
(2) The axis contacts against the stopper at "
speed", and then stops.
(3) After stopping, the pulse output from the QD75 stops with
the zero signal (signal that is output on detection of contact
with the stopper. Input externally), and the machine OPR is
completed.
Pr.46
OPR speed" in the
Pr.47
Creep speed", and move with the
OPR torque limit value" is required. If
Pr.46
OPR speed" in the
Pr.47
Creep speed", and move with the
OPR torque limit value" is required. If
Pr.47
Creep speed" in the
Pr.54
V
(1)
Near-point dog OFF
Pr.47
Creep
Pr.49
OPR
V
(1)
Pr.47
Creep
Near-point dog
OPR torque
Pr.47
Creep
(1)
Zero signal
5 - 47
Pr.46
OPR speed
(2)
Pr.47
(3)
(4)
(5)
ON
Dwell time counting
OPR speed
Pr.46
(2)
(3) (4)
(5)
Zero signal
ON
OFF
V
Pr.47
Creep speed
(2)
MELSEC-Q
Creep speed
t
Range to forcibly stop
the servomotor
rotation with the stopper.
Dwell time up
Pr.47
Creep speed
Stop with stopper
t
Stop with stopper
t
(3)
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Troubleshooting
