Closed-loop thyristor current control
System- and communication configuring D7-SYS - SIMADYN D 5-49
Edition 06.2002
IE
EN
ION
IOF
QON
QEO
FC output
RM IF<3%
0%0% 0%
Field current > 5%
xx
x
TA
|- T -
|- T -
x = irrelevant
FC
TA TA
TATA,
TA
TA = cycle
Fig. 5-28 Diagram, FCS control
The setpoint available at input FCS.FC is written to the analog output on
the ITDC. The output voltage Va of the D/A converter is obtained
according to the following algorithm:
RRCNF
ARC
a
V
∗
∗
∗=
FC
] V [ 10
, D/A converter resolution (12 bit)
4096
RRC
=
FCS.IE = 0 can be used during the commissioning phase to switch-out
the field current setpoint.
NOTE
When configuring the FCS block, analog output 2 is switched-over from
ITDC-X5 to the Sitor interface.
Channel 2 is no longer available for additional configuring purposes!
Diagram FCS
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