Mitsubishi Electronics QD75D, QD75P Pr.51 OPR acceleration time selection, Use the value set

5DATA USED FOR POSITIONING CONTROL

[Table 1]

MELSEC-Q

Value set with peripheral device

Value set with sequence program

Pr.1

setting value

(unit)

(unit)

0 : mm

0 to 214748364.7 (∝ m)

0 to 2147483647 (⋅ 10-1∝m)

1 : inch

0 to 21474.83647 (inch)

0 to 2147483647 (⋅ 10-5inch)

2 : degree

0 to 21474.83647 (degree)

0 to 2147483647 (⋅ 10-5degree)

3 : pulse

0 to 2147483647 (pulse)

0 to 2147483647 (pulse)

Example of setting for " Pr. 50 Setting for the movement amount after near-point dog ON"

Assuming that the " Pr. 8 Speed limit value" is set to 200 kpulse/s, " Pr. 46 OPR speed" to 10 kpulse/s,

" Pr. 47 Creep speed" to 1 kpulse/s, and deceleration time to 300 ms, the minimum value of " Pr. 50 Setting for the

movement amount after near-point dog ON" is calculated as follows:

[Machine OPR operation]

[Deceleration distance] =

1

Vz

t + 0.01

Vz

2

1000

Movement amount for

Pr.8 Speed limit value: Vp=200kpulse/s

Vz

Tb Vz

10ms at OPR speed

=

+ 0.01

Vz

2000

Vp

3

3

3

Pr.46 OPR speed:

10 10 300

10 10

+ 0.01 10 10

Vz=10kpulse/s

=

2000

200 103

= 75 + 100

= 175

Pr.47

Creep speed: Vc=1kpulse/s

Setting for the movement amount after

near-point dog ON ( Pr. 50 ) should be

Vz

equal to or larger than 175.

Actual deceleration time:t = Tb

t

Vp

Deceleration time: Tb=300ms

Pr.51

OPR acceleration time selection

Set which of "acceleration time 0 to 3" to use for the acceleration time during OPR.
0 : Use the value set in "	Pr.9	Acceleration time 0".
1 : Use the value set in "	Pr.25		Acceleration time 1".

2 : Use the value set in "	Pr.26	Acceleration time 2".
3 : Use the value set in "	Pr.27	Acceleration time 3".

Pr.52

OPR deceleration time selection

Set which of "deceleration time 0 to 3" to use for the deceleration time during OPR.
0 : Use the value set in "	Pr.10	Deceleration time 0".
1 : Use the value set in "	Pr.28	Deceleration time 1".

2 : Use the value set in "	Pr.29	Deceleration time 2".
3 : Use the value set in "	Pr.30	Deceleration time 3".

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