Siemens D7-SYS - Page 454

Closed-loop thyristor current control
5-14 System- and communication configuring D7-SYS - SIMADYN D
Edition 06.2002
PA6. Significance Value\connection
INV
Rotating field detection mode
INV=0 continuous monitoring,
INV=1 the rotating field is defined once when starting
INV=2 no monitoring
(Initialization connection/
default: 0)
FNT Line supply frequency [Hz] for start of synchronization after the
line supply voltage is switched-in
Condition: 6
≤ PA6.FNT ≤ 600, otherwise, QSF\bit 9 = 1
(Initialization connection/
default: 50)

CTH Firing pulse output, time value
(this value changes in each cycle)
PA6.CTH
→ PC6.CTH
(Default: 0)
CTS
Time value at the start of FB-PA6
(the value changes in each cycle)
PA6.CTS
→ PC6.CTS
(Default: 0)
RDY
Enables the firing angle controller FB-PC6,
internal interrupt frequency is harmonized to the line supply
frequency
PA6.RDY
→ PC6.EN
(Default: 0)
Y6R
Counter value =
ˆ
60° =
ˆ
1/6 of the line supply periods [16 MHz]
NZG / 6
PA6.Y6R
→ PC6.X6R
(Default: 0)
XAS
Firing angle actual value [ASG]
PA6.XAS
→ PC6.XAS
(Default: 0.0)
NZG
Counter value =
ˆ
line frequency (360°) [16 MHz]
(dependent on NCM)
(Default: 0)
{50Hz
= 320000}
{60Hz
= 384000}
TA
Time difference between the actual and last firing pulse [ms] (Default: 0 ms)
AFP Firing angle actual value [°]
(Default: 0.0)
AFI Phase shift angle of the line supply filter ITDC-HW [°]
()
°∗= 60tan50/farctan AFI (e.g. f = 50Hz ,AFI =
60°)
(Default: 0.0)
AVW
Offset angular component in the firing angle actual value (refer to
XDA)
IAF- 30 XDA AVW °+=
(Default: 0.0)
YIT Current conduction duration in the discontinuous range
(YIT <1
=
ˆ
discontinuous current, =1
=
ˆ
continuous current)
PA6.YIT
→ CPI.XIT
(Default: 0.0)
{ >0
…1<}
YDA Offset angle,
This is calculated from the zero crossovers of the synchronizing
voltage and the phase-to-phase line supply voltage. YDA should
be equal to XDA.
(Default: 0.0)
XFN
Measured line supply frequency [Hz] = f (NZG)
(Default: 0.0)
ZYA
Diagnostics: Status "Synchronous state machine" (Default: 0)
ZDA
Diagnostics: Status "Rotating field state machine" (Default: 0.0)
QSF
Fault
PA6.QSF
→ SOL.QSA
(Default: 16#0000)
Table 5-1 I/O PA6