
With the above parameter settings, the acceleration pattern will be shown as the following
figure. The acceleration is calculated according to the following figure in case speed is up to
2474 (mm/min), the acceleration is 7716 (mm/sec
2
) in case speed is from 2474 (mm/min) up
to 32000 (mm/min), and acceleration is calculated according to the following figure in case
speed is from 32000 (mm/min) up to 48000 (mm/min).
P0
P1 P2
0
1000
2000
3000
4000
5000
6000
7000
8000
9000
0 8000 16000 24000 32000 40000 48000
Speed mm/min
Acceleration
mm/sec
2
P5
*
*
*
*
*
*
Fig. (f) Acceleration pattern with consideration of friction
NOTE
The values in the model αM30/4000i speed-torque
characteristic diagram are just typical ones. The
values will change depending on the digital servo
software, parameters, input voltage, and other
factors.
The optimum acceleration will, therefore, change due
to the characteristics of the machine.
9/15
PAGEEDT.
DATE
DESIGN
DESCRIPTION
TITLE
No.
FANUC Series 16i/18i/160i/180i/160is/180is-MA
OPERATOR’S MANUAL
Concerning the addition of
Optimum Torque acceleration/deceleration
B-63014EN/02-9
01 02.07.29 Newly Registered