Bosch Plena Installation And User Instructions Manual page 35

Plena Voice Alarm System | Installation and User Instructions | Equipment
To create a 3-wire volume override, see figure 5.12:
Note
It is not possible to use 3-wire volume override
in combination with redundant loudspeaker lines
(line A and B, see figure 5.8) and supervision. If
redundant loudspeaker lines are needed, use 4-
wire volume override (see figure 5. 1 1).
• Connect the 100 V output of loudspeaker line A to
the 100 V input of the volume control.
• Connect the 100 V/0 V (CALL/RTN) of the
transformer to the 100V output of loudspeaker line B.
• Connect the 0 output of loudspeaker line A to the
0 V of the loudspeaker.
• Enable 3-wire volume override in the configuration
software.
Note
See the Configuration Software Manual
(9922 141 1038x) for more information about
the configuration software.
Caution
Make sure that the correct connections have
been made and the system is correctly
configured.
100V
A
100V
B
0V
A
figure 5. 1 2: 3-wire volume override
Bosch Security Systems | 2006-06 | 9922 141 10377 en
5.3.8 Line output
The voice alarm controller has 1 line output (see figure
5.13). This output has a double cinch socket. Both cinch
sockets contain the same, mono signal, which consists of
the current BGM and calls. The line output can be used
to connect the voice alarm controller to a recording
device (e.g. a tape-deck).
Booster
figure 5. 1 3: Line output
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In
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