Sigma 4-15C - Page 83

Operating Manual SIGMA 4-15C, page 83 of 95
03/06
9.2 Quadratic Curves
− The deceleration curves are inverted images of the acceleration curves with
the same numbers.
Quadratic Curves (10 - 19)
Figure 3
The curve 19 is a special case compared with the other curves. The centrifuge
accelerates with maximum torque. The acceleration time only depends on the
moment of inertia of the rotor.
Quadratic curve no. Time up to 1000 rpm Slope from 1000 rpm linear
10 240 120 sec./1000 rpm.
11 180 90 sec./1000 rpm.
12 120 60 sec./1000 rpm.
13 60 30 sec./1000 rpm.
14 40 20 sec./1000 rpm.
15 30 15 sec./1000 rpm.
16 20 10 sec./1000 rpm.
17 10 5 sec./1000 rpm.
18 5 2,5 sec./1000 rpm.
19 0,9 0,5 sec./1000 rpm.
0
100
200
300
400
500
600
700
800
900
1.000
0
20 40 60 80
100 120 140 160 180 200 220 240
101112
13
141516
17
18
19