Siemens SINUMERIK 840C Installation Instructions Manual page 1107

12 Functional Descriptions
12.33.1 Introduction
Function generator
for FFT analysis
(speed controller)
Speed actual value
monitoring
torque setpoint
limitation = 0
Speed controller
reset time
Integrator
feedback
Torque- to-cross-
current conversion
n act
–
Function generator
for FFT analysis
(current controller)
MSD field control
FDD field setpoint =0
I I
q d
Fig. 12-1 Overview of speed and current control loops
12–332
n set
–
Filter 1
Filter 2
611D:
Speed feedforward
control setpoint
Filter 4
Filter 3
Filter 2
iq set
–
Filter 1
i set
–
Ust d Ust q
– –
U
U
dq
RST
T S R
M
ENC
© Siemens AG 1992 All Rights Reserved
08.96
Speed control loop
Speed
setpoint filter
Speed
setpoint limitation
Speed
controller P gain
611D:
Weight compensation/
feedforward control torque
Torque setpoint
limitation
Torque setpoint
&
limitation
611D:
Filters 1-4 in current
controller
Current setpoint filter
Current control
loop
Current setpoint limitation
6FC5197- AA50
SINUMERIK 840C (IA)