Speed Controller Adaptation - Siemens SINAMICS S120 Function Manual

3.2.4

Speed controller adaptation

Description
Two adaptation methods are available, namely free Kp_n adaptation and speed-
dependent Kp_n/Tn_n adaptation.
Free Kp_n adaptation is also active in "operation without encoder" mode and is
used in "operation with encoder" mode as an additional factor for speed-dependent
Kp_n adaptation.
Speed-dependent Kp_n/Tn_n adaptation is only active in "operation with encoder"
mode and also affects the Tn_n value.
p
1459
Adaptation signal
p
1455
x
(0)0
Relating to
p x
200 x or p 205
p
Adaptation signal 2 1458
p
1466
(1)0
p
1460
0
Speed
p
1470
_
Kp
1
p
1461
p
Sensorless 1464
vector
control
active
p
1465
p
1463
p
1462
0
Speed
p
1472
_
Tn
1
Fig. 3-26 Free KP adaptation
Dynamic response reduction in the field-weakening range can be activated
(p1400.0) with sensorless operation. This is activated when the speed controller is
optimized in order to achieve a greater dynamic response in the basic speed
range.
© Siemens AG, 2005. All rights reserved
SINAMICS S120 Function Manual, 06/05 Edition
p
1400
1
y
0
1
x
p p
1456 1457
--dependent
p adaptation
Dynamic reduction
field weakening with
sensorless vector
control only
--dependent
p adaptation
p .6
1400
.5
1
0
1
p .5
1400
Kp_n_adapt
0
1
p .0
1400
, 1
0
1
p .5
1400
1
0
Operating Modes
Vector control
To speed
controller
_n_adapt
Tn
3-115