Siemens SINAMICS S Manuel page 981

Switch-on delay
pxxxx
x
T 0
x y
The digital signal x must have the value "1" without any interruption
during time T before output y changes to "1".
T T T T
x
y
Switch-out delay
pxxxx
x
0 T
x y
The digital signal x must have the value "0" without interruption during
time T before output y changes to "1".
T T T T
x
y
Delay (switch-in and switch-out)
pxxxx pxxxx
x
T T
x 1 2 y
pxxxx pxxxx
The digital signal x must have the value "1" without interruption during
time T1 or must have the value "0" during time T2 before output y
changes its signal state.
T T T T
1 1 2 2
x
y
1 2
DO: All objects
General - explanation of the symbols (part 3)
PT1 element
y
T 0
pxxxx
pxxxx
y
t
Delay element, first Order.
pxxxx = time constant
y
0 T
pxxxx
PT2 lowpass
Natural frequency, denominator
fn_n
pxxxx
y
|y|
T T
1 2
x
fn
Transfer function
1
.
H(s) =
2
s
2 D_n
+
2 fn_n
2 fn_n
3 4
2nd Order filter (bandstop/general filter)
Natural frequency, numerator
Natural frequency, denominator
Used as bandstop filter
Damping, denominator
- center frequency fs: fn_z = fs
D_n
pxxxx
- bandwidth f_B: D_z = 0
Transfer function when used as general filter
D
y
f
2
H(s) =
2
.
s + 1
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Damping, numerator
fn_z D_z
pxxxx pxxxx
|y|
fs
x y
f_B
f
2nd Order filter
Damping, denominator
fn_n D_n
pxxxx pxxxx
fn_n = fs
f _ B
D_n =
2 fs
.
.
s 2 D_z
2
+ s + 1
fn_z 2 fn_z
.
.
2
s 2 D_n
+ s + 1
fn_n
2 fn_n
7
Function diagram
SINAMICS S
8
- 1024 -