The Alr Module; Block Diagram - Siemens SWT-3000 Equipment Manual

SWT 3000 Equipment Manual

The ALR module

The ALR module provides as well 3 alarm relays like the ALRS module. The difference to the
ALRS module is in the two binary inputs. The input voltage is adjustable to 24V, 48/60V, 110V
resp. 250V DC. The binary input 1 is used for the clock synchronization of the iSWT. Either an ex-
ternal synch. pulse is connected or the input is alternatively configurable as an input for entering
IRIG-B signals. Additionally the ALR module provides a LED for visual indication of the state for
each binary input and for each alarm output. The LED are visible after removal of the front panel.
For more details refer to chapter 4 commissioning.

Block diagram

IRIG-B
BI1
(„USYNC")
BI2
ALA1
(„EALR")
ALA2
(„SALR/NDALR")
ALA3
(„GENALR")
Figure 4:
© SIEMENS AG 2008
X16 X17
X14 X15
BI1_A
A1
BI1_B
C3
BI2_A
A5
BI2_B
A8
X7
ALA1_A
A21 X6
X5
ALA1_B
C23
X10
ALA2_A
A28 X9
X8
ALA2_B
A25
X13
ALA3_A
A32 X12
X11
ALA3_B
C30
ALR Block diagram
Edition p3_3_2x 08/09
24V
12V
H6
IRIG-B-Test (S1/4)
5V
250V
110V
48/60V
BI1-Test (S1/2) H5
24V
250V
110V
48/60V
H4
BI2-Test (S1/1)
24V
K1
H3
K2
H2
K3
H1
ALR_INFO.vsd/Sheet-1
2008-03-14/DOE
ALRS and ALR Module
+5V
+12V
BI1_IN_L
BI2_IN_L
ALA1_OUT_L
ALA2_OUT_L
ALA3_OUT_L
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