Closed-loop thyristor current control
5-82
System- and communication configuring D7-SYS - SIMADYN D
Edition 06.2002
Connec-
tion
Significance
Source
SOL.IPL
Pulse inhibit = 1, effective immediately!
SOL.ION
On command, closed-loop thyristor current control
SOL.IOF
Off command, closed-loop thyristor current control
SOL.WC1
Current setpoint 1
SOL.WC2
Current setpoint 2
SOL.IF1
External fault 1
SOL.IF2
External fault 2
SOL.MNE
Group inhibit, fault words YF1 and YHW
SOL.QUI
Acknowledgement, faults YF1 and YF2
FCS.ION
On command, field current
FCS.IOF
Switch-out field setpoint output
FCS.FC
Field current setpoint
FCS.EN
Enable inputs ION,IOF
5.8.3 Configuring example for normalization
The closed-loop thyristor current control can be used with normalized
(standard) and absolute values.
For the example for the settings of the system parameters, the following
are used as basis: A 6QG3230-2AB SITOR set (3-ph./400[V], AC 30[A] +
field) and a DC motor with the rated data:
Armature: V
A
=400 [V], I
A
=10 [A], R
A
=500 [m
Ω
],
Field: I
F
=1.5 A
and the phase-to-phase line supply voltage: UL=400 V.
5.8.3.1 Representation with normalized values
Parameter
Significance
CAV.RRC = 30[A]
Rated DC current [A] of the SITOR set
current [A] for V
Iact
=5 V/CT SITOR
CAV.ARC =10 [A]
Rated system/motor current [A] current [A] for
CAV.YC=1
CAV.NF =1
Current normalization factor
CAV.CX1=+1.5
Absolute value, overcurrent, torque direction 1 [%]
permissible overcurrent 15 A
CAV.CX2=+1.5
Absolute value, overcurrent, torque direction 2 [%]
permissible overcurrent -15 A
CAV.YC
Current actual values, normalized
1
...
0
1...
CAV.YC
ˆ
10A
0A
10A
+
−
=
=
+
⇔
⇔
−
Connections,
external
Current actual
value sensing
