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Bosch Security Systems | 2003-09 | 9922 141 50502en
Plena Message Manager | Installation and Operating Manual | en | 12
3 External settings and connections
3.1 Connecting the DC supply (battery)
Figure 3.1
The message manager has a 24 Vdc input (screw terminal), which you can use to connect a back up power supply,
e.g. batteries. You can earth (14) 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.
1
1
5
V
~
23
0
V
~
M
a
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ns
P
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to
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Su
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v
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sion
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2
3
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2
3
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To
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es
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L
B
B1
9
6
5
/
0
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8
9
0
0
1
9
6
5
0
0
0
5
WK
.
S/N
.
T
r
i
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e
r
I
n
p
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t
1
-
6
O
FF
O
N
N
O
N
C
C
2
4
V
-
+
M
s
g
A
c
ti
v
e
F
au
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D
1
2
3456
78
9
1
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1
1
1
2
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or
2
3
0
V
~
5
0
/
6
0
H
z
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
NC
NO
C
a
t
e
d
Inp
ut
P
o
w
e
r
:
5
0
V
A
T
0
.
5
L
2
5
0
V
Th
isa
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ton
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Su
pe
rvisio
n
In
Out
O
u
t
T
r
i
gg
e
r
I
n
p
u
t1
-
6
O
F
F
ON
N
O
N
C
C
2
4
V
-
+
M
s
g
A
cti
ve
F
a
u
l
t
GND
1234
Tr
i
gg
e
r
In
p
ut
123456
7
8
1
2
34
5
6
78
N
C
N
O
C
14
F
F=1.5A
12 VDC
12 VDC
-
+
-
+
External settings and connections