SWT 3000 Equipment Manual Functional Description
© SIEMENS AG 2008 Edition p3_3_2x 08/09 Page - 33
Command duration for single purpose operation
Double system protection
In the double system protection operating mode a signal applied to the device input is transmitted
as long as the input circuit is activated. If another input signal is received while one is still applied
the transmit signal is shifted to the frequency corresponding to this input combination. The signal
output can be interrupted at the receiver output (optionally) after 500ms.
If the output relay is to be activated for a minimum time on reception of a command an increase in
the command output time can be set in steps of 5ms up to max. 2000ms.
Single-phase protection resp. operating mode 4 and M5A
Identical to double system protection
Switching functions Mode 3
In this mode any command applied at the device input is transmitted for 20ms (or the time set in
time slot). The next command (if there is one) is then transmitted or the same command again (if
no other input is activated) depending on the priority. The command output can be extended (op-
tionally) at the receiver output in steps of 100ms to max. 2000ms so that the output relays do not
drop out in between. This makes it possible to transmit commands from all input combinations de-
pending on priority.
Mode 3a, 3b resp. 5A
Identical to double system protection
Command duration for alternate multi purpose operation
From PowerSys release ≥P3_2_217 the command duration for the integrated SWT 3000 is auto-
matically adjusted to a limit of 1000ms.
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