Siemens SIMADYN D Manual page 490

Closed-loop thyristor current control
I/O
FCS.
AD Hardware address
RRC Rated field current - rectifier [A]
Condition: RRC ≥ ARC ≠ 0, otherwise, QSF\bit 12 = 1
ARC
Rated field excitation current of the DC motor [A]
Condition: RRC ≥ ARC ≠ 0, otherwise, QSF\bit 12 = 1
NF Normalization factor to interpret the setpoint
NF= 1
NF=ARC
ION On command, field current
a positive edges switches through the field setpoint,
if IE and EN = 1 and IOF = 0
IOF Switches-out the field setpoint output after time T
and resets QON
FC Field current setpoint is output at analog output 2
Observe the normalization!
Condition: FC ≥ 0, otherwise, QSF\bit 12 = 1
EN Enables inputs ION, IOF
With EN=1 and IE=1, the current setpoint input is enabled.
With EN=0, the field is reduced, as for ION=1
IE Option: Field present
If IE = 0, setpoint = 0 [V] is permanently output.
A switch-on command ION=1 ⇒ QON=1, instantaneously
T Delay time when switching-in and when switching-out,
if the option IE=1 is acknowledged.
QON is output, delayed by time T. This means that the switch-
over logic stage is only switched-in when the field has been
established.
QEO is only reset after time T when switching-out.
Condition: 0 ≤ T ≤ 100000 ms, otherwise, QSF\bit 12 = 1.

QON Outputs the on command ION=1,
for IE=1, QON is set, delayed by time T
QON is reset 1 cycle after the switch-out command (ION=0 or
IOF=1).
QEO
Setpoint output checkback signal (only for IE=1)
The output is only reset after time T has expired.
TA Diagnostics: Configured sampling time
ZVA Diagnostics: Status "Field state machine"
QSF Fault
Fig. 5-29 I/O FCS
5-50
Significance
= ˆ
(FC=1 [1] rated excitation current =ARC)
= ˆ
(FC=ARC [A] rated excitation current =ARC)
System- and communication configuring D7-SYS - SIMADYN D
Value\connection
(Initialization connection/
default: 0.0)
(Initialization connection/
default: 0.0)
(Initialization connection/
default: 1.0)
(Default: 0)
(Default: 0)
(Default: 0)
(Default: 0)
(Default: 0)
(Initialization connection/
default: 1500 ms)
FCS.QON → SOL.ION
(Default: 0)
(Default: 0)
(Default: 0 ms)
(Default: 0)
FCS.QSF → SOL.QSS
(Default: 16#0000)
Edition 06.2002