Mitsubishi A1SD75M3 User Manual page 145

5 DATA USED FOR POSITIONING CONTROL
Example for setting " Pr.52 Setting for the movement amount after near-point dog ON"
When " Pr.7 Speed limit value" is set to 200kpulse/s, " Pr.48 Zero point return speed" is set to 10kpulse/s, " Pr.49 Creep
speed" is set to 1kpulse/s and the deceleration time is set to 300ms, " Pr.52 Setting for the movement amount after near-point
dog ON" is calculated as shown below.
[Machine zero point return operation]
Speed limit value
Pr.7
: Vp=200kpulse/s
Pr.48
Zero point return speed
: Vz=10kpulse/s
Actual decel-
: t = Tb ×
eration time
[Table 1]
Pr.1 Value set with peripheral device
setting value
0 to 214748364.7 ( µ m)
0 : mm
1 : inch 0 to 21474.83647 (inch)
2 : degree 0 to 21474.83647 (degree)
3 : pulse 0 to 2147483647 (pulse)
Pr.49
t
Vz
Deceleration time
Vp
Pr.53 Zero point return acceleration time selection
Set which of "acceleration time 0 to 3" to use for the acceleration time during zero
point return.
0 : Use the value set in " Pr.8 Acceleration time 0".
1 : Use the value set in " Pr.26 Acceleration time 1".
2 : Use the value set in " Pr.27 Acceleration time 2".
3 : Use the value set in " Pr.28 Acceleration time 3".
Pr.54 Zero point return deceleration time selection
Set which of deceleration time 0 to 3" to use for the deceleration time during zero
point return.
0 : Use the value set in " Pr.9 Deceleration time 0".
1 : Use the value set in " Pr.29 Deceleration time 1".
2 : Use the value set in " Pr.30 Deceleration time 2".
3 : Use the value set in " Pr.31 Deceleration time 3".
(unit)
1
[Deceleration
=
2
distance]
Vz
=
2000
10
=
2000
Creep speed
= 75 + 100
: Vc=1kpulse/s
= 175
* Set 175 or more for "
amount after near-point dog ON"
: Tb=300ms
5 - 55
Value set with sequence program
(unit)
0 to 2147483647 ( × 10
0 to 2147483647 ( × 10
0 to 2147483647 ( × 10
0 to 2147483647 (pulse)
Vz
× ×
t
+ 0.01
1000
Movement amount for 10ms
at zero point return speed
×
Tb Vz
×
0.01
+
Vp
3
× × × 3
10 300 10 10
×
× 3
200 10
Setting for the movement
Pr.52
MELSEC-A
µ m)
-1
-5
inch)
-5
degree)
×
Vz
×
Vz
× × 3
+ 0.01 10 10