Siemens SINAMICS S120 Manual De Listas página 2471

Dyn grid Vdc thr
p5508
–
Vdc act val
r0070
+
–
De-activate characteristic p5500.0
U_line out of tol
r5502.1
[7998.5]
Dyn grid act
p5501
&
(0)
0
0
1
Reactive current setpoint characteristic
r5510[3]
Neg phase-sequence system
Symmetrical active current setp characteristic
components
r5510[5] 0
taking apart
r5510[7]
Neg phase-sequence system
reactive current setp characteristic
Grid support negative phase-sequence system calculation
<1> Instantaneous value of r0027 at the start of FRT.
<2> p5501 = 1:
Until reaching the Vdc threshold (p5508), idle current takes higher priority than active current.
<3> Valid for rated pulse frequency. For a higher pulse frequency a reduced value is valid.
1 2
DO: A_INF, R_INF
Dynamic grid support (r0108.7 = 1) - Current limitation
Ramp p5509[1]
1
0
1
0
Ramp p5509[2]
&
INF I_react Z_set
1
0
p3611
(0)
0
Asym I_lim
PosSeq
p5509[7]
0
1
Ramp begin/end
p5509[0]
Asym I_lim
NegSeq
p5509[8]
p5500.3
3 4
FRT curr lim s_s U_line out of tol
p5520 r5502.1
(1)
Apparent current lim scal
p5500.6
p5509[5]
+
0
<3>
+
1
<1>
Min
INF I_reactv F_set
p3610
+
+
Reactive current
setpoint Vdc threshold
p5500.5
r5510[1]
+
+
+
r5510[2]
Reactive current setpoint ramp
INF P_react prectr
p3612
(0)
5
fp_7997_01_eng.vsd
05.06.20 V05.02.03
Active current limit adaptation
INF I_act ctrl set
r3517
[8940.8]
1
0
x²
+
–
Dynamic limiting
current setpoint
dq
p5506[1] r5510[8]
PU I_rated
r0207
x²
I_react scal
r5509[14]
0 1
+
–
0 1
I_reactive filt
p5506[3]
Reactive current setpoint not limited
|r3471|
Negative phase-sequence system active current setpoint unlimited
r5510[4]
r5510[6]
Negative phase-sequence system reactive current setpoint unlimited
6 7
Function diagram
SINAMICS S120
p0115[0]
<2>
I_active_set
r0077
Dyn grid I Alpha
r5514[0]
Dyn grid I Beta
r5514[1]
I_react_set
r0075
r5510[0]
[7987.1]
8
- 7997 -