
PROGRAMMING19. HIGH SPEED CUTTING FUNCTIONS
B–63534EN/02
520
Table. 19.10 (c) Example of setting parameters related to
acceleration pattern (2/2)
Parameter
No.
Setting Unit Remarks
Accelera-
tion at P1
19546,19552
19558,19564
18712 0.01% At P1, 90(Nm) can be used for
the acceleration/deceleration,
so set the ratio 7717 (mm/sec
2
)
to 4124 (mm/sec
2
).
1.8712 = 7717/4124
Accelera-
tion at P2
to P4
19547–19549
19553–19555
19559–19561
19565–19567
0 0.01% 0 is set because P2 to P4 are
skipped.
Accelera-
tion at P5
19550,19556
19562,19568
14345 0.01% At P5, 69(Nm) can be used for
the acceleration/deceleration,
so set the ratio 5916 (mm/sec
2
)
to 4124 (mm/sec
2
).
1.4345 = 5916/4124
With the above parameter settings, the acceleration pattern will be shown
as the following figure. The acceleration is 7716 (mm/sec
2
) in case speed
is 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).
P1
P0
0
1000
2000
3000
4000
5000
6000
7000
8000
9000
0 16000 32000 48000
Speed mm/min
P5
Acceleration mm/sec/sec
Fig.19.10 (f) Acceleration pattern with consideration of friction
NOTE
The values in the model a30/4000i 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.