Bosch PLE-1P120-US Installation And User Instructions Manual page 10

Plena easy line power amplifier
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Plena Power Amplifier | Installation and User Instructions | Description
The unit has 24 VDC backup input with built in
24 VDC battery charger. A separate battery charger is,
therefore, not required. The charger charges the battery
with a 0.5 A constant current until the battery voltage
reaches 27.4 VDC. The charger then switches over to
constant voltage charging (also known as float charging).
Note
When using the unit with backup power of 24 V,
make sure that the unit is always powered ON.
When the unit is switched OFF, the batteries will
be drained as this will be regarded as a power
source. Consequently the unit will revert to 24
VDC power from the 24 V input.
70V
Input
1V
Loop through
figure 2. 1 : Schematic overview of the Plena Power Amplifier
Bosch Security Systems | 2008-02 | PLE-1P120-US, PLE-1P240-US en
Sensitivity
Limiter
Temperature controlled fan
en | 10
70 V
25 V
4 Ohm
0 V

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Ple-1p240-us

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