Bosch Security Systems | 2006-06 | 9922 141 10377 en
Plena Voice Alarm System | Installation and User Instructions | Introduction en | 19
3.3 Shopping mall
3.3.1 Introduction
Shopping malls are typical example of applications with
a large number of zones with varying output power
requirements per zone. The priorities are speech
intelligibility and compliance with IEC60849 standard
(and its national equivalents). In addition to mandatory
voice alarm functionality for evacuating the public and
shop personnel, an EVAC system for shopping centers
can have BGM for the public areas. It should be
possible to individually call each shop or store. During
emergency messages, each shop’s BGM volume control
is automatically overridden. Additional public address
functionality for making general public announcements
is an optional requirement.
3.3.2 Summary of requirements
• Typically up to 60 zones
• Speech intelligibility is the main priority
• Variable power requirement per zone
• Call station in security control room
• Additional public address functionality
(non-emergency)
• BGM in public areas
• BGM music with local override in shops
3.3.3 Solution for a 54-zone system
A Plena Voice Alarm System Controller handles
routing to 6 zones, the remaining 48 zones require eight
6-zone routers. The security control room is equipped
with a remote control panel and call station plus
keypads for individually addressing zones and BGM for
the public areas, while the controller unit and routers
are located in a fire-resistant cabinet or basement.
Fireman’s panel (with overall priority) is built in close to
the main entrance or emergency exit (subject to relevant
local regulations). The Plena Voice Alarm System is a
two-channel system, so BGM can still be provided in
zones not receiving a call.
3.3.4 Power requirements
Each zone will have varying power requirements,
ranging from small shops with a single loudspeaker to
department stores with several floors and more
loudspeakers. Parking garages and open-air walkways
will require weatherproof sound projectors or horn
loudspeakers. To facilitate phased evacuation from
different levels of the shopping center, public areas are
divided into zones. Additional Plena Power Amplifiers
are incorporated to provide additional power,
two-channel operation and for use as a spare amplifier.
3.3.5 Layout
See figure 3.3, table 3.5 and table 3.6
table 3.5: Zones
Zone Description Power
Z1-30 30 small shops/kiosks 30 x 6 W
Z31-36 6 shops 12 x 6 W
Z37-42 6 medium-sized stores 24 x 6
Z47 Security control room 1 x 6 W
Z48 Offices 4 x 6 W
Z49 Walkways ground floor 4 x 6 W
Z50 Gallery 1st floor 10 x 6 W
Z51 Gallery 2nd floor 10 x 6 W
Z52 Main public square 4 x 18 W
Z53 Parking garage level 1 6 x 10 W
Z54 Parking garage level 2 6 x 10 W
Tot al 858 W
table 3.6: Units
Unit Description No.
LBB1990/00 Controller 1 x
LBB1992/00 Router 8 x
LBB1996/00 Remote control 1 x
LBB1997/00 Remote control extension 8 x
LBB1956/00 Call station 1 x
LBB1957/00 Call station keypad 5 x
LBB1935/00 Power Amplifier (240 W) 1x
LBB1938/00 Power Amplifier (480 W) 2 x
PLN-DVDT DVD Tuner 1x
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