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
2
List Manua
l, 09/2
017
, A5E3384289
0
F
ig.
3
-138
60
35 – Mo
ment
o
f in
erti
a esti
ma
to
r
- 6035 -
Function diagram
8
7
6
5
4
3
2
1
fp_6035_97_63.vsd
Vector control / U/f control
G120 CU250S-2
05.09.2017
V4.7.9
Moment of inertia estimator
J_est M pos [Nm]
p1563 [D] (0.00)
r1493
M_inert tot scal [kgm²]
1
0
r0080
Actual torque [Nm]
J_est t J
p1561 [D]
Mot M_mom of inert
p0341 [M]
Mot MomInert Ratio
p0342 [M]
J_est M thresh
p1560 [D]
J_est t load
p1562 [D]
J_est config
p5310 [D]
J_est const pos
p5313 [D]
J_est lin pos
p5312 [D]
J_prectrl t J
p5316 [D]
a_prectrl scal
p1496 [D]
ZSW n_ctrl
r1407
r1407
r1407.26
ZSW n_ctrl
r1407
r1407
.24
.25
Moment of inertia
estimator
Load torque
estimator
Cyclic calculation of
the coefficients
1 = moment of inertia estimator active
1 = moment of inertia estimator stabilized
1 = load estimator active
Moment of inertia
calculation
1 = moment of inertia estimator active
n_ctrl config
p1400 [D]
.18
Only for initialization
Basic function
Possible bit combinations p5310:
Bit 1, 0
= 0, 0 --> Function not active.
= 0, 1 --> Cyclic calculation of the coefficients without moment of inertia precontrol (commissioning).
= 1, 0 --> Moment of inertia precontrol activated (without cyclic calculation of the coefficients).
= 1, 1 --> Moment of inertia precontrol activated (with cyclic calculation of the coefficients).
<1>
Active for p5310.0 = 1
Positive direction of
rotation
<1>
<2>
<2> p1564, p5314 and p5315 for negative direction of rotation.
r0063
Actual speed [rpm]
J_est config
p5310 [D]
1 = moment of inertia precontrol activated
.1
<1>
[6031.2]
1
0
0
<3> On p1400.22 = 1 and r1407.26 = 1, the current values are saved in p1561 … p1564, p5312 … p5315 for RAM to ROM.
<4> If p1496 1, the switch always remains set to 0.
<4>
<3>
<3>
<3>
<3>
