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External Settings And Connections; Connect The Dc Supply (Battery) - Bosch LBB 1920 Installation And Operating Manual

Plena universal pre-amplifier
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Plena Universal Pre-amplifier | Installation and Operating Manual |
4

External settings and connections

+
1 2 V
Figure 4.1

4. 1 Connect the DC supply (battery)

The universal 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. The unit is protected
against reversal of the battery polarity.
Caution
The connection cable must have an in-line fuse. Use the type of fuse as mentioned in the illustration.
Bosch Security Systems | 2003-09 | 3922 988 99482en
p p a r
a tu s
c o n n
d e li v
e c te d
ir e d
fo r 2
3 0 V -
R a te
d in p
P o w e
u t
r : 1 0
T 0 .5
0 V A
u s t b
A L 2
e e a
5 0 V
r th e d
L
E M G
O U T
R
D C
IN D
C O
U T
+ 2 4 V
-
+ 2 4 V
-
-
+
D C
1 2 V
D C
External settings and connections
Dir .Ou
t1
Dir .Ou
t2
Dir .Ou
t3
Dir .Ou
t4
1-
3
4
3
5
5
1
4
2
1-
3
+
4
GND
-
5
2
1
3
GND
+
1/L ine
1
-
2
3
1
1-
4
Lin e1
2/L ine
2
Lin e2
F
-
F = 1.5A
Ins/ Cas
c/Em
gln
Ins/ Cas
cOu t
Ins/ Cas
Mas ter
c
Line
Out
Mas ter
Mic .
Out
3
5
115 V-
230 V-
1-
3
4
1-
App ara
5
3
tus deli
4
con nec
vire d
3/L ine
5
War ning
ted for
Rate
230 V-
This
d inpu
appa
ratus
Pow er
t
3
mus t
T0.5
: 100V
A
be earth
AL 250V
ed
Lin e3
0
4/L ine
L
4
EM G
R
OU T
DC
Lin e
4
IN DC
OU T
+24 V-
+24 V-
en | 12

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