Bosch Security Systems | 2004-06 | 9922 141 10371en
Plena Voice Alarm System | Installation and User Instructions | Application examples en | 16
2.4 Application: Shopping mall
2.4.1 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)
.
2.4.2 Requirements
In addition to mandatory voice alarm functionality for
evacuating the public and shop personnel, an
Econtroller 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, the
volume override of each individual shop is engaged.
Additional public address functionality for making
general public announcements is an optional
requirement.
2.4.3 Solution
A Plena voice alarm 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.
2.4.4 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 booster amplifiers
are incorporated to provide additional power, two-
channel operation and for use as a spare amplifier.
2.4.5 System configuration
The Plena units, needed to build the application, are
listed in table 2.9. The interconnections are shown in
figure 2.3.
table 2.7: Summary of requirements
Requirements
54 zones (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
(nonemergency)
BGM in public areas
BGM music with local override in shops
table 2.8: Power requirements per zone
Zone Description Power
1-30 30 small shops 30x6W cab/ceil
31-36 6 small shops 12x6W 2/store
37-42 6 medium stores 24x6W ceiling
43-46 Large store, 4 levels 16x6W ceiling
47 Control room 1x6W cabinet
48 Offices 4x6W cabinet
49 Walkways gnd floor 4x6W projector
50 Gallery 1st floor 10x6W ceiling
51 Gallery 2nd floor 10x6W ceiling
52 Main public square 4x18W horn
53 Parking level 1 6x10W horn
54
Parking level 2 6x10W horn
To t al 858W
table 2.9: Used Plena units
Unit Description Number
LBB1990/00 Voice alarm controller 1x
LBB1992/00 Router 8x
LBB1996/00 Remote control panel 1x
LBB1997/00 RCP extension 8x
LBB1998/00 RCP kit 1x
LBB1999/00 RCP extension kit 8x
LBB1956/00 Call station 1x
LBB1957/00 CS extension keypad 5x
LBB1935/00 240W booster 3x
LBB1938/00 480 booster 2x
LBB1961/00 BGM source 1x
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