Relay Outputs; Visual Indication; Test Switch S1 - Siemens SWT 3000 Equipment Manual

Alarm Module
12.2 Inputs and Outputs

Relay Outputs

12.2.3
The alarm module comprises also 3 alarm outputs, switched by relay (K1 to K3). The 3 relays provide change-
over contacts. In the standard setup the break contacts (NC) are used.
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Figure 12-2
(1) LED H1: Output ALA3
(2) LED H2: Output ALA2
(3) LED H3: Output ALA1
(4)

Test Switch S1

(5) LED H4: Input BI2
(6) LED H5: Input BI1
(7) LED H6: IRIG-B Input
12.2.4

Visual Indication

The ALR module provides a LED for visual indication of the state for each binary input and for each alarm
output. They are visible after removal of the front panel. The significations are shown in the following table:
Table 12-1
LED
H6
H5
H4
H3
H2
H1
Test Switch S1
12.2.5
For test purposes, the ALR module provides a switch for each of the binary input circuits and for the IRIG-B
circuit. Closing a switch sets the output of the assigned circuit to the active state.
356
Display and Setting Elements on the ALR Module
ALR Indication
Indication
IRIG-B input energized
Binary input 1 energized
Binary input 2 energized
Alarm output 1 activated
Alarm output 2 activated
Alarm output 3 activated
Smart Communication, SWT 3000 Teleprotection, Equipment Manual
C53000-G6040-C605-1, Edition 03.2020