Stober POSIDRIVE MDS 5000, Manual

Page: 154 / 590

System blocks
Block descriptions
ID 441692.01
STÖBER ANTRIEBSTECHNIK
153
148 Lowpass 1.order (I32)
Description
The value specified on the input In is low-pass filtered with the time constant T and output to
the output Out .
Scaling for T uses the following formula:
] [ 150
] [
* 65536
ms CycletimeA
ms Tau
e T
−
=
(Tau and cycle time in ms)
When you define a parameter for
T , you can take the definition from C43 , for example.
It is possible to influence the low-pass function with the input Reset . When Reset has the
value 0, the low-pass function is executed. When Reset has the value 1, the value 0 is output
to Out . When the value 2 is specified on Reset , the input value is output unfiltered to Out .
The difference between block 148 and block 468 is the behavior when input variables
overflow. See the description of block 468.
Inputs
No. Name Datatype Scaling Description
1 In I32 – Value to be filtered
2 T I32 Skal.-Fkt. 11 Time constant
3 Reset I8 –
0: Normal function as low pass
1: Filter permanently on 0 (
Out= 0)
2: Filter on time constant 0 ( Out=In )
Outputs
No. Name Datatype Scaling Description
4 Out I32 – Filtered value
5 TP P64 – Internal variable