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Chapter 5 Data Used for Positioning Control
5.2.2 Basic parameters 2
Setting value, setting range
Setting value buffer memory
address
Item
Value set with GX Works2
Value set with sequence
program
Default
value
QD77MS2
QD77MS4
QD77MS16
Pr.8
Speed limit value
The setting range differs depending on the "
Pr.1
Unit setting".
200000
10+150n
11+150n
Pr.9
Acceleration time 0
1 to 8388608 (ms) 1 to 8388608 (ms) 1000
12+150n
13+150n
Pr.10
Deceleration time 0
1 to 8388608 (ms) 1 to 8388608 (ms) 1000
14+150n
15+150n
n: Axis No.-1
Pr.8
Speed limit value
Set the maximum speed during positioning, OPR and speed-torque operations.
Pr.1
setting value
Value set with GX Works2 (unit) Value set with sequence program (unit)
0 : mm 0.01 to 20000000.00 (mm/min)
1 to 2000000000 (×10
-2
mm/min)
1 : inch 0.001 to 2000000.000 (inch/min)
1 to 2000000000 (×10
-3
inch/min)
2 : degree 0.001 to 2000000.000 (degree/min)
1
1 to 2000000000 (×10
-3
degree/min)
2
3 : PLS 1 to 1000000000 (PLS/s) 1 to 1000000000 (PLS/s)
1: Range of speed limit value when " Pr.83 Speed control 10 x multiplier setting for degree axis" is set to
valid: 0.01 to 20000000.00 (degree/min).
2: Range of speed limit value when " Pr.83 Speed control 10 x multiplier setting for degree axis" is set to
valid: 1 to 2000000000 (
10
-2
degree/min)
Pr.9
Acceleration time 0,
Pr.10
Deceleration time 0
" Pr.9 Acceleration time 0" specifies the time for the speed to increase from zero to
the "
Pr.8 Speed limit value" (" Pr.31 JOG speed limit value" at JOG operation control).
"
Pr.10 Deceleration time 0" specifies the time for the speed to decrease from the
"
Pr.8 Speed limit value" (" Pr.31 JOG speed limit value" at JOG operation control) to
zero.
Actual
acceleration
time
Actual deceleration time
Time
Velocity
Speed limit value
Positioning speed
Acceleration time 0
Pr.9
Pr.10
Pr.8
Deceleration time 0
1) If the positioning speed is set lower than the parameter-defined speed limit
value, the actual acceleration/deceleration time will be relatively short. Thus,
set the maximum positioning speed equal to or only a little lower than the
parameter-defined speed limit value.
2) These settings are valid for OPR, positioning and JOG operations.
3) When the positioning involves interpolation, the acceleration/deceleration time
defined for the reference axis is valid.
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