Figure 42: Calculation example
Setting of an acceleration profile according to Figure 42. The setpoint speed n is
known as well as the three periods t
1
, t
2
and t
3
.
n = 1000rpm = 16.67 s
-1
, t
1
= 1 s, t
2
= 2 s, t
3
= 3 s
Calculate the constant acceleration a in the second period t
2
:
The resulting value for the acceleration is entered in co48.
Calculation of the jerk r
1
in the first period t
1
:
The calculated value for the jerk r1 can be adjusted in co52.
Calculation of the jerk r
3
in the third period t
3
:
The calculated value for the jerk r3 can be adjusted in co53. For the sake of com-
pleteness, when you want, calculate the speeds n
1
and n
2
at the changes:
The formulas are also valid for the case if there is no constant acceleration. Then
there is no smooth transition of the s-curves. In this case t
2
is 0.
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