3
F
unction
d
iag
ram
s
3.18
V
e
ctor control
/U
/f control
SINAMICS G120
C
U
250S-2 C
ontrol Units
89
0
List Manua
l, 09/2
017
, A5E3384289
0
F
ig.
3
-136
60
30 – Speed
se
tp
oint,
d
ro
op
- 6030 -
Function diagram
8
7
6
5
4
3
2
1
fp_6030_97_55.vsd
Vector control / U/f control
G120 CU250S-2
05.09.2017
V4.7.9
Speed setpoint, droop
<3> Only active, if p1488 > 0.
3
2
1
0
0
1
0
0
[6040.8]
[6060.6]
[6060.8]
[2520.7]
p1492
<2>
[2522.3]
r1482
n_ctrl I-M_outp [Nm]
r0079
M_set [Nm]
STW n_ctrl
r1406
r1406
.11
r1508
M_set bef. M_suppl [Nm]
Droop input source
0 ... 3
p1488 [D] (0)
Droop scal
0.000 ... 0.500
p1489 [D] (0.050)
ZSW n_ctrl
r1407
r1407
r1490
Droop n_reduction [rpm]
Droop input
150 ms
Droop M_comp scal
-2000.0 ... 2000.0 [%]
p1487 [D] (100.0)
Droop M_comp
(0)
p1486 [C]
N
N
M
n
<3>
<1>
<1>
0
1
0
[6060.8]
[3050.8]
[3050.8]
[3080.8]
[6060.3]
[2522.3]
[2522.3]
[6031.1]
1
0
[6799.1]
r0060
n_set before filt. [rpm]
r1170
Speed setpoint sum [rpm]
ZSW n_ctrl
r1407
r1407
r0062
n_set after filter [rpm]
a for M_ctrl scal
0.0 ... 400.0 [%]
p1499 [D] (100.0)
r0079
M_set [Nm]
ZSW n_ctrl
r1407
r1407
ZSW n_ctrl
r1407
r1407
n_ctrl config
p1400.15
1 = Sensorless vector control,
speed pre-control active
Pre-control speed
r1084
n_limit pos eff [rpm]
r1087
n_limit neg eff [rpm]
Scaling: p1489 = 0.100 - for a rated motor torque of r0333 - results in a speed setpoint reduction of 0.1 · p0311.
For vector control without encoder (SLVC).
.10
.11
.11
.2
–
+
–
Mot M_mom of inert [kgm²]
p0341 [M] (0.000000)
Mot MomInert Ratio
p0342 [M] (1.000)
n_set_filt 1 T [ms]
p1416 [D] (0.00)
<2>
<1>
[6730.1]
[6731.1]