Siemens SINUMERIK 840C Installation Instructions Manual page 1109

12 Functional Descriptions
12.33.1 Introduction
n act
–
MSD field control
FDD field setpoint =0
I
I
q
d
Fig. 12-3 Overview of current control loop
12–334
PT2:
Filter 1
MD 1202
MD 1203
Bandstop:
MD 1211
MD 1212
MD 1213
n
MD 1104
MD 1105 Current
MD 1103
setpoint
MD 1238
limitation
Ust d
–
U
RST
T S
I
RST
a,b
R
M
I
S
d,q a,b
ENC
© Siemens AG 1992 All Rights Reserved
iq set
–
set
–
Field controller
MD 1120
MD 1121
Ust q
–
U
dq
R
6FC5197- AA50
SINUMERIK 840C (IA)
08.96
Function
generator for
FFT analysis
(current
controller)