Siemens SINAMICS S110 - Fig. 2-3 1022 - Explanation of the symbols (Part 3)

Function diagrams Explanations on the function diagrams 2-756
© Siemens AG 2012 All Rights Reserved
SINAMICS S110 List Manual (LH7), 06/2012, 6SL3097-4AP10-0BP3
Fig. 2-3 1022 – Explanation of the symbols (Part 3)
- 1022 -
Function diagram
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SINAMICS S110
22.01.09 V04.04.00
Explanations for the function diagrams - Explanation of the symbols (Part 3)
Switch-on delay
T0
xy
pxxxx
The digital signal x must have the value "1" without any interruption
during the time T before output y changes to "1".
2nd-order filter (bandstop/general filter)
Transfer function when used as general filter
Used as bandstop filter
- center frequency fs: fn_z = fs
fn_n = fs
yx
Natural frequency, numerator
fn_z
pxxxx
Damping, numerator
D_z
pxxxx
Natural frequency, denominator
fn_n
pxxxx
Damping, denominator
D_n
pxxxx
H(s) =
s
2
fn_z 2 fn_z
s+
+
s
2
fn_n
.
.
2 fn_n
D_n
s
+
+
1
1
2
.
D_z2
.
2
2
- bandwidth f_B: D_z = 0
D_n =
PT1 element
t
y
Delay element, first order.
pxxxx = time constant
pxxxx
PT2 low pass
Transfer function
H(s) =
+
s
2
fn_n
.
2 fn_n
D_n
s+ 1
2
.
2
1
Natural frequency, denominator
fn_n
pxxxx
Damping, denominator
D_n
pxxxx
yx
f
|y|
fn
D
0T
Switch-off delay
xy
pxxxx
The digital signal x must have the value "0" without interruption during
the time T before output y changes to "0".
Delay (switch-on and switch-off)
T1 T2
T0
pxxxx
0T
pxxxx
xy
xy
The digital signal x must have the value "1" without interruption during
time T
1
or must have the value "0" during time T
2
before output y
changes its signal state.
xy
T1 T2
xy
pxxxx pxxxx
pxxxx pxxxx
x
TT TT
y
TT
x
y
x
TT
y
T1 T1 T2 T2
f_B
fs2
.
Analog adder can be activated
y
x
1
I
x
2
The following applies to I = 1 signal: y = x
1
+ x
2
The following applies to I = 0 signal: y = x
1
f
2nd Order Filter
|y|
fs
f_B