Mitsubishi Electronics QD75D, QD75P user manual Pr.46 OPR speed Pr.47 Creep speed

5 DATA USED FOR POSITIONING CONTROL

MELSEC-Q

1 : Stopper 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.

(At this time " Pr.54 OPR torque limit value" is required. If

the torque is not limited, the servomotor could be damaged in step (4).)

(4)The axis contacts against the stopper at " Pr.47 Creep speed", and then stops.

(5)When the near-point dog turns ON and the " Pr.49 OPR

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.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 " Pr.54 OPR torque limit value" is required. If

the torque is not limited, the servomotor could be damaged in step (4).)

(4)The axis contacts against the stopper at " Pr.47 Creep 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.47 Creep speed" in the

" Pr.44 OPR direction". At this time " Pr.54 OPR torque

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 " Pr.47 Creep 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.

V	Pr.46 OPR speed
	(2)
			Pr.47 Creep speed
(1)	(3)	(4)	(5)	t
			Range to forcibly stop

the servomotor

rotation with the stopper.

ON

Near-point dog OFF

Dwell time up

Dwell time counting

V	Pr.46	OPR speed
					Pr.47
		(2)
					Creep speed
					Stop with stopper
		(3)	(4)		t
(1)				(5)

Zero signal

ON

Near-point dog OFF

V
Pr.47	Creep speed
	Stop with stopper
	(2)
(1)	t
Zero signal
	(3)

5 - 47