Mitsubishi Electronics QD75D, QD75P Pr.51 , Pr.52

5 - 55
MELSEC-Q
5 DATA USED FOR POSITIONING CONTROL
[Table 1]
Pr.1 setting value Value set with peripheral device
(unit) Value set with sequence program (unit)
0 : mm 0 to 214748364.7 (µm) 0 to 2147483647 (
×
10-1µm)
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)
Deceleration time: Tb=300ms
Creep speed: Vc=1kpulse/s
Actual deceleration time:t = Tb t
Vz
Vp
Pr.47
Speed limit value: Vp=200kpulse/s
Pr.8
OPR speed:
Vz=10kpulse/s
Pr.46
[Machine OPR operation]
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:
[Deceleration distance] = 1
2Vz 1000 t + 0.01 Vz
Movement amount for
10ms at OPR speed
=Tb Vz
Vp + 0.01 Vz
Vz
2000
=300 10 10
200 10
10 10
2000
3 3
3+ 0.01 10 103
= 75 + 100
= 175
Setting for the movement amount after
near-point dog ON ( Pr. 50 ) should be
equal to or larger than 175.
Pr.51 OPR acceleration time selection
Set which of "acceleration time 0 to 3" to use for the acceleration time dur ing 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 tim e 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".