Siemens SWT 3000 Equipment Manual page 55

Activated Input
BI1 + BI2 + BI3
BI2 + BI3
BI2 + BI4
BI2 + BI3 + BI4
BI1 + BI2 + BI4
BI1 + BI2 + BI3 + BI4 -
USYNC
-
1) If an invalid frequency or code is received, or in case of guard tone alarm: If t
unblocking impulse (t
the RXALR output of the ALR board.
2) If an invalid frequency or code is received or in case of guard tone alarm.
Command Duration of Mode 3b
The single command applied at the device input is transmitted for at least 15 ms or 20 ms. The next command
is then transmitted, or the same command is continuously transmitted if no other command input active.
If next command input is active at same time or within the time interval of 2 ms, the transmit signal is shifted
to the frequency corresponding to this input combination. Otherwise, the next command will be transmitted
after minimal transmission duration.
[DwpermComm-020215, 1, en_US]
Figure 2-9
Table 2-9
Timeline
t1
t2
t3
Smart Communication, SWT 3000 Teleprotection, Equipment Manual
C53000-G6040-C605-1, Edition 03.2020
Transmission
Uncoded
-
-
-
-
-
-
-
= Duration of the unblocking impulse). The unblocking impulse is distributed via
unbl.
Permissive Command 1+2 Transmission
Command Transmission Timeline Description
Description
BI1 active, start transmission of command 1.
BI2 active within time interval 2 ms, switch to transmit command combination of 1+2,
BO1+2 active after command transmission delay.
Transmission duration time-out, BO1+2 inactive after command transmission delay.
Transmission Command Output
Coded in the Remote
Station without
Unblocking
f + f CO1 + CO2 + CO3
1 7
f + f CO2 + CO3
2 4
f + f CO2 + CO4
2 5
f + f CO2 + CO3 + CO4
2 6
f + f CO1 + CO2 + CO4
3 4
f + f CO1 + CO2 + CO3 +
3 5
CO4
f + f -
s 7
-
Alarm signaling
Functional Description
2.7 Protection Modes
Command Output
in the Remote
Station with
Unblocking
T > 0 1)
unbl.
CO1 + CO2 + CO3
CO2 + CO3
CO2 + CO4
CO2 + CO3 + CO4
CO1 + CO2 + CO4
CO1 + CO2 + CO3 +
CO4
-
Alarm signaling +
2)
unblocking impulse
at RXALR 1
> 0, output of the
unbl.
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