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Siemens SINAMICS S120 Manual De Listas página 2146

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Switch-on delay
pxxxx
x
T
0
x
y
The digital signal x must have the value "1" without any interruption
during the time T before output y changes to "1".
T
T
T
T
x
y
Switch-off delay
pxxxx
x
0
T
x
y
The digital signal x must have the value "0" without interruption during
the time T before output y changes to "0".
T
T
T
T
x
y
Delay (switch-on and switch-off)
pxxxx pxxxx
x
T
T
x
y
1
2
pxxxx pxxxx
The digital signal x must have the value "1" without interruption during
time T
or must have the value "0" during time T
before output y
1
2
changes its signal state.
T
T
T
T
1
1
2
2
x
y
1
2
DO: All objects
Explanations on the function diagrams - Explanation of the symbols (part 3)
PT1 element
pxxxx
y
T
0
y
pxxxx
t
2nd-order filter (bandstop/general filter)
Natural frequency, numerator
fn_n
pxxxx
y
x
0
T
pxxxx
Natural frequency, denominator
fn_d
pxxxx
Used as bandstop filter
Transfer function when used as general filter
y
s
2 • D_n
2
+
T
T
2 π fn_n
2 π fn_n
1
2
H(s) =
2
s
2 • D_d
+
2 π fn_d
2 π fn_d
Analog adder can be activated
x
The following applies to I = 1 signal: y = x
1
y
x
2
The following applies to I = 0 signal: y = x
I
3
4
Delay element, first order.
pxxxx = time constant
Damping, numerator
D_n
pxxxx
|y|
fs
y
f_B
f
2nd Order Filter
Damping, denominator
D_d
pxxxx
- center frequency fs:
fn_n = fs
fn_d = fs
- bandwidth f_B:
D_n = 0
f_B
D_d =
2 • fs
• s + 1
• s + 1
+ x
1
2
1
5
fp_1022_51_eng.vsd
17.07.13 V05.02.03
Natural frequency, denominator
PT2 low pass
fn_d
Damping, denominator
pxxxx
|y|
D
x
fn
f
Transfer function
H(s) =
s
2 π fn_d
Linear
U_output max r0071
Parabolic
U_output max r0071
f_set
U_boost total r1315
p0310
Flux current control (FCC)
U_boost total r1315
Mot f_rated
6
7
Function diagram
SINAMICS
D_d
pxxxx
y
1
2
2 • D_d
+
• s + 1
2 π fn_d
p0310
p0310
8
- 1022 -

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