
B-63783EN-1/01 7.FEEDRATE CONTROL/ACCELERATION AND DECELERATION CONTROL
- 731 -
(2) For acceleration and movement in the minus direction
If the limited acceleration curve is as shown in the figure below,
set the parameters as follows:
(0.01-% units)
Parameter No. 6720
= 7273 (ratio to the acceleration reference 2000 mm/sec
2
at P0)
Parameter No. 6721
= 7273 (ratio to the acceleration reference 2000 mm/sec
2
at P1)
Parameter No. 6725
= 2727 (ratio to the acceleration reference 750 mm/sec
2
at P5)
P5
P1
P0
0
500
1000
1500
2000
2500
3000
0 15000 30000
Speed mm/min
Acceleration mm/sec/sec
Fig. 7.2.6 (g) Limited acceleration curve example for acceleration and
movement in minus direction
(3) For deceleration and movement in the plus direction
If the limited acceleration curve is as shown in the figure below,
set the parameters as follows:
(0.01-% units)
Parameter No. 6726
= 10909 (ratio to the acceleration reference 3000 mm/sec
2
at P0)
Parameter No. 6727
= 10909 (ratio to the acceleration reference 3000 mm/sec
2
at P1)
Parameter No. 6731
= 5455 (ratio to the acceleration reference 1500 mm/sec
2
at P5)
P5
P1
P0
0
500
1000
1500
2000
2500
3000
0 15000 30000
Speed mm/min
Acceleration mm/sec/sec
Fig. 7.2.6 (h) Limited acceleration curve example for deceleration and
movement in plus direction