Bosch LBB 1925 - External settings and connections (system pre-amplifier); Connect the DC supply (battery)

Bosch Security Systems | 2003-09 | 3922 988 99483en
Plena System Pre-amplifier | Installation and Operating Manual | en | 13
4 External settings and connections (system pre-amplifier)
4.1 Connect the DC supply (battery)
Figure 4.1
The system pre-amplifier has a 24 Vdc input (terminal screw), which you can use to connect a back up power
supply, e.g. batteries. You can earth the unit to increase the electrical stability of the system.
Caution
The connection cable must have an in-line fuse. Use the type of fuse as mentioned in the illustration.
External settings and connections
11
5V
-
2
3
0V
-
I
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+
2
4V
-
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24V
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2
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6
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Hz
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3
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4
1
2
3
7
6
8
5
4
1
2
2
1
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G
ND
3
1
2
+
-
G
ND
3
Z
one 2
Z
one 3
Zone 4
D
C
O
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t
D
C
I
n
10
0V
1
00V 0
0
10
0V
0
10
0V
0
1
0
0
V
100
V
0
0
1
0
0
V
1
00V 0
0
0
0V
0
1
00V
0
100V
0
100
V
0
100V
0
+24
V-
+
2
4
V-
1
1
5
V-
2
3
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atus
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War
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1
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VDC
1
2
VDC
-
+
-
+
F
F=1.5A
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atus
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0
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In
Call I
n
Call Active
6
Zone 3
Z
one 4
D
C
Out
DC In
0
V
0