Pc6, Firing Angle Controller - Siemens SIMADYN D Manual

Closed-loop thyristor current control

5.2.8 PC6, firing angle controller

Hardware address
Mode:7kHz/long pulses
Inverter control limit [°]
Rectifier control limit [°]
Main pulse length [ms]
Second pulse length [ms]
Time value firing pulse output
Time value PA6 start
Enable firing angle controller
60° value [16 MHz]
Firing angle actual value [ASG]
Firing angle setpoint [ASG]
Test: Firing angle setpoint [°]
Shift to inv. op.: Firing angle setpoint [°]
>Rect./TA max. angular change [°]
>Inv./TA max. angular change [°]
Tolerance pulse pos. from pos. error
Mode, double firing
Handshake CAV
Fig. 5-23 PC6 represented in the CFC
Function
5-42
PC6
GV AD
BO LPD
R LDU
R LDL
TS LMP
TS LFP
DI CTH
DI CTS
BO EN
DI X6R
R XAS
R WAS
R AQL
R AWS
R DAG
R DAW
R DIL
DI DIZ
#Error DIL
W ICC
Control word
BO DZ
BO ACI
The PC6 function block (Pulse Controller 6-pulse) is used to implement a
"Dead-beat" controller and the firing pulse generation for a 6-pulse line-
commutated converter for a fully-controlled bridge B6C or two fully-
controlled bridges in a circulating-current free, anti-parallel circuit
configuration B6(A)B6(C).
Various firing angle setpoints are used, depending on the operating
mode, entered from the switch-over logic stage.
• Closed-loop controlled operation
• Shift to inverter operation
• Open-loop controlled operation
operation)
The firing pulses for the thyristors of the SITOR set are generated on the
ITDC according to the specifications of FB PC6.
The firing pulses are output as 7[kHz] pulse chains (standard) or as long
pulses.
FB PC6 is always calculated as the last block in an interrupt task in
synchronism with the firing pulses.
TCP TS Process. time all FB [ms]
ACA R Process. time FB[°]
ZPA I Firing pulse No. {1...6}
I
ZZA Firing pulse adjust. No.
ZLA I
Diag.:Status "double firing state mach."
ZXA I
Diag.:Pulse pos. error generation, status
WAF R
Angular setpoint
YEA R
System deviation, firing angle controller
DZM BO
Double firing active
ZAH W
Control HW ITDC
ACO BO
Handshake EMF
QSF W
Fault
System- and communication configuring D7-SYS - SIMADYN D
(SOL.ISE = 0)
(SOL.QPI = 1)
= ˆ
(SOL.ISE = 1 test
Edition 06.2002