Bosch Plena - Connecting Loudspeaker Zones

Loudspeakers
The voice alarm controller has 6 zone outputs (Z1 to Z6). Each zone output consists of 2
redundant loudspeaker lines (line A and line B). Normally, calls and BGM are distributed to a
zone over both loudspeaker lines. If one of the loudspeaker lines of a zone fails, it is still
possible to distribute calls and BGM to the zone over the remaining loudspeaker line.
Z1
Z2
Z3
Z4
Z5
Z6
Ext
Booster
In
DC In
100V
0
Int
Booster
Out
100V
0
100V
0
100V
0
100V
0
100V
0
100V
0
24V
70V
100V
0
Call out
100V
0
100V
0
100V
0
100V
0
100V
0
100V
0
Z2
Z3
Z4
Z5
Z6
Z1
A B
Int B
BGM /
100V
1A 1B
2A 2B
3A 3B
4A 4B
5A 5B
6A
Z6
Z5
Z4
Z3
Z2
Z1
6B
Figure 5.6: Connecting loudspeaker zones
5.1.6
54 en | Connection Plena
2013.07 | V2.0 | Installation and Operation manual Bosch Security Systems B.V.