Closed-loop thyristor current control
System- and communication configuring D7-SYS - SIMADYN D
5-45
Edition 06.2002
PC6.
Significance
Value\connection
AD
Hardware address
LDP
Selects the firing pulse waveform:
LDP = 0: 7kHz pulse chains,
LDP = 1: Long pulses
7kHz is required for all Sitor converters.
(Initialization connection/
default: 0)
LDU
Absolute inverter (INV) control limit [
°
]
Condition: 90
≤
PC6.LDU
≤
180, otherwise, QSF\bit 9 =1
(180° is a theoretical value. The free-wheeling, pulse
cancellation time and the overlapping due to the commutation
must be taken into account.)
(Initialization connection/
default: 150)
LDL
Absolute rectifier (RECT.) control limit [
°
]
Condition: 0
≤
PC6.LDL
≤
90, otherwise, QSF\bit 9 = 1
(The limit should lie symmetrically around 90° to the inverter
control limit.)
(Initialization connection/
default: 30)
LMP
Main pulse length [ms]
Conversion into degrees according the line frequency f:
ms
05
.
0
LMP
]
[
360
3
10
[Hz]
f
[ms]
LMP
]
[
LMP
≥
⇒
°
∗
−
∗
∗
=
°
If the configured value is lower, LMP is limited to 50
µ
s.
(Default: 1.1ms)
{ < 45[
°
] el. }
LFP
Second pulse length [ms]
We recommend that the value = LMP should be kept.
(handled according to connection LMP)
(Default: 1.1ms)
{ < 45[
°
] el. }
CTH
Firing pulse output, time value
(the value changes in each cycle)
PA6.CTH
→
PC6.CTH
CTS
Time value at the start of FB-PA6
(the value changes in each cycle)
PA6.CTS
→
PC6.CTS
EN
Firing angle controller enable is realized,
if Vsyn. and line supply = ok
PA6.RDY
→
PC6.EN
X6R
Numerical value
=
ˆ
60° of the line supply period [16 MHz]
(50 Hz
=
ˆ
320000[1])
PA6.Y6R
→
PC6.X6R
{ 2
21
}
XAS
Firing angle actual value [ASG]
PA6.XAS
→
PC6.XAS
{-1...0...+1}
WAS
Firing angle setpoint
[ASG]
CPI.Y
→
PC6.WAS
AQL
Test operation: Firing angle setpoint [
°
]
Input limited with LDL
≤
AQL
≤
LDU
The transferred firing angle is directly executed!
Enter small changes in order to avoid overcurrents.
(Default: 150)
AWS
Shift to INV operation: Firing angle setpoint [
°
]
This angle becomes setpoint with signal SOL.QPI. The current
controller is disabled.
Condition: 90
≤
AWS
≤
180, otherwise, QSF\bit 9 = 1
(Initialization connection/
default: 150)
DAG
Max. angular change/sampling cycle in the direction of rectifier
operation
Condition: 0
≤
PC6.DAG
≤
180, otherwise, QSF\bit 9 = 1
(Initialization connection/
default: 60)
DAW
Max. angular change/sampling cycle in the direction of inverter
operation
Condition: 0
≤
PC6.DAW
≤
180, otherwise, QSF\bit 9 = 1
(Initialization connection/
default: 150)
I/O
