Download Velocity Edge GX440 Operating instructions

Setpoint channel and closed-loop control
7.4 Vector speed/torque control with/without encoder
7.4.3.4
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.
p1400.6
p1459
$GDSWDWLRQVLJQDO
1 0
y
p1455
x
(0)
1
UHIHUUHGWR
S[RUS[
$GDSWDWLRQVLJQDO
x
p1458
p1456
p1457
p1466
p1400.5
(1)
0
p1460 0
p1470
1
(QFRGHUOHVV
YHFWRUFRQWURO
DFWLYH
6SHHGGHSHQGHQW
.SBQDGDSWDWLRQ
1
p1461
p1400.0
p1465
p1464
5HGXFWLRQLQG\QDPLF
UHVSRQVH
)LHOGZHDNHQLQJ
(QFRGHUOHVVYHFWRUFRQWURO
RQO\
1
.SBQBDGDSW
0
WRVSHHG
FRQWUROOHU
1
p1463
p1400.5
p1462 0
6SHHGGHSHQGHQW
7QBQDGDSWDWLRQ
p1472
1
1
0
Figure 7-13
7QBQBDGDSW
Free Kp adaptation
A dynamic response reduction in the field-weakening range can be activated in encoderless
operation (p1400.0). This is activated when the speed controller is optimized in order to
achieve a greater dynamic response in the base speed range.
Example of speed-dependent adaptation
Note
This type of adaptation is only active in "operation with encoder" mode.
Drive converter cabinet units
Operating Instructions, 10/2008, A5E00288214A
283