Siemens D7-SYS - Page 475

Closed-loop thyristor current control
System- and communication configuring D7-SYS - SIMADYN D 5-35
Edition 06.2002
GLI
WCU
WC
WCL
IL
YE
YCW
QIU
QIL
QCL
|x|
|x|
|x|
f
(GLI,
GLI/2)
-
>
=
<
+ IL
- IL
TA
+
Fig. 5-17 Function chart CSP
If the difference > +IL or < -IL, the integrator component of the current
signal is inhibited in the particular direction with signals QIU or QIL.
WCU
0
TA
0,1
0,2
0,3
0,4
0,5
0,6
0,7
7,5
7,5
5
5
5
5
10
20
20
15
15
5
7,5
15
7,5
7,5
GLI
WC
WC
WC
WCU
WC
5
15
t [TA]
YCW
Fig. 5-18 Setpoint smoothing with steps in the setpoint
CSP. Significance Value\connection
AD
Hardware address
WC
Current setpoint (with sign)
SOL.YWC
→ CSP.WC
(Default: 0.0)
WCU
Positive current limit (absolute value) (Default: 1.0)
WCL
Negative current limit (absolute value) (Default: 1.0)
Setpoint
smoothing with
setpoint step WC
I/O