Alr Module; Visual Indication; Test Switch S1 - Siemens SWT-3000 Equipment Manual

Installation and Commissioning

ALR Module

The alarm module comprises as well three alarm outputs, switched by relay (K1 – K3). The three
relays provide change over contacts. In the standard setup the break contacts (NC) are used.
IRIG-B
H6
H5 BI1
H4 BI2
Test BI2
1
Test BI1
S1
n.u.
Test IRIG-B
H3 ALA1
ALA2
H2
H1 ALA3
Figure 15:

Visual Indication

The module ALR 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 table below:
Table 35:
LED
H6
H5
H4
H3
H2
H1

Test switch S1

For test purposes the module ALR 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.
Table 36:
Switch
S1.1
S1.2
S1.3
S1.4
Page - 28
BI1/USYNC
X17 X16
5 6
IRIG B
X18
FAST
3 4
1 2 SLOW
5
3 1
X3
6 4
2
BI2
5 6
X19 FAST
3 4
1 2
SLOW
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
Functions of the ALR test switch
Function
Binary Input 2 test
Binary input 1 test
n.u.
IRIG-B test
Edition p3_3_2x 08/09
SWT 3000 Equipment Manual
BI1/USYNC
9 7 5
3 1
X2
X14 X15
10 8 6 4
2
BI2
9 7 5 3 1
X4
10 8 6 4
2
ALA1
X7 X6 X5
K1
K2
ALA3
X12
K3
X13
ALA2
X10 X8
X9
X11
© SIEMENS AG 2008