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EN-60849

EMERGENCY PURPOSESVoice Alarm SYSTEMS.

NORM DESCRPTON

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 EN-60849

• O!"ec# – PA systems used to alarm in emergency

situations.

• Mai$ %er&orma$ce'.–  A sound system for emergency purposes shall permit the broadcasting of intelligibleinformation of measures to be taken for the

 protection of lives within one or more speciedareas.“

 AP(CATON

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FDSAlarmgeneration~~

Ampli-fers

Lines Loudspeaker

•  Term'

• Alarm– a signal, or condition, warning of an emergency” 

– e.g.: evacuation advice

•arning

– important notice concerning any change of statuswhich demands attention or activity “

– e.g. hint that an emergency may happen

•!ritical "ignal Path– all components and interconnections between every

emergency broadcast initiation point and the inputterminals on, or within, each loudspeaker enclosure.” 

EN-60849

DE)NTONS

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Requirements on

equipments

Concerning the manuacturer 

EN-60849

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•Continuous Aaila!ilit" #$%&!'– (he )A s"stem shall !e aaila!le all times 

•Aaila!ilit" *ithin &+ seconds ater

suppl"ing po*er to the s"stem #$%&c'–primar" or secondar" po*er

•,aimum . Seconds rom initiation until

frst emergenc" !roadcast #$%&d'–including reaction time o the detection s"stem

EN-60849

)UNCTONS AVA(A*(TY 

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#$": #ire $etection "ystem

• +i,e'# Priori# &or Alarmi$, /4.a1– disabling all other %general& PA functions

EN-60849

 A(ARMNG PRORTY 

CD

FDS

PA central

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•,anual Alarming/0arning/Restoration

• >

Automatic Alarming 1eacuation2

• >Automatic 0arning

• >

no emergenc"3 operational messages (e.g. for system check)

EN-60849

 EMERGENCY PRORTES /4.21

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• & #e 3oice alarm ''#em i' ca%a!le o&o%era#io$ i$ &ll a#oma#ic mo5e ama$al i$#er3e$#io$ 'all al7a' !e %o''i!le  /4.2.1

• starting and stopping of prerecorded alarm messages'(.).*a+

• selection of appropriate prerecorded alarm messages'(.).*b+

– when using specic emergency messages, indication of

which message and their relation to ones must bedisplayed '-.*.d+

• paging by using the emergency microphone %if any& '(.).*d+

• selection of ones for prerecorded message or paging '(.).*c]

EN-60849

MANUA( NTERVENTON

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• :A clear i$5ica#io$ 'all a#oma#icall!e ,i3e$ a# #e 5e'i,$a#e5 co$#rol

loca#io$' o&:  /;.1– 1the designated control location can !e the freman4s microphone2

•5s"stem aaila!ilit"5 #6%7 a'•5po*er suppl" aaila!ilit"5 #6%7 !'

•5an" ault condition5 #6%7 c'

•s"stems *ith seeral 8ones3 current message

!roadcast into *hich 8ones3Alert9 :acuation9 paging

EN-60849

 A#oma#ic S#a#' $5ica#io$ 

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• $5ica#io$ o& )ailre'  /;.21• #ailures must be indicated automatically at an

designated place %e.g. main system&

• he failure shall be indicated within /00 secondsafter occurance.

• he failure shall be indicated acoustically andvisually.

• A receipt button and a reset button must beavailable.

EN-60849

)ailre $5ica#io$

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• $5ica#io$  /;.21• 1isual and acoustic indication

– tone of 0.- seconds duration, min. once within - seconds

– permanent or 2ashing visual indicator

• 3anual reception by personal

– tone disappears– visual indicator remains 4 changes to permanent on

• 5eset of failure indication after failure recovery 

– visual indicator e6tinguishes automatically 7 or 7

– visual indicator e6tinguishes after manual reset 

– visual indicator shall e6tinguish after failure recovery 8

• Acoustic tone must start again when other failuredetected

EN-60849

)ailre $5ica#io$

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• A$ a#oma#ic Sr3eilla$ce m'#

i$5ica#e eac 5e#ec#e5 &ailre– he surveillance system tests

• !omponents of the “critical signal path “%sources, ampliers, cables etc.&

• the power supply – primary supply #6%.a'

– secondary supply #6%.!'

– battery charger #6%.c'

• failure of protection circuits which may prevent the

an emergency broadcast – e.g. fuse, circuit breaker, isolator #6%.d'

• control circuits %processor etc.&

EN-60849

Sr3eilla$ce

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•)ailre o& eleme$#' o& #e cri#ical 'i,$al %a#•failure of microphone #6%.e'

–1oice coil9 pre-amplifer9 *iring2

•failure of the critical signal path through ampliers #6%.'

•missing of ampliers or critical modules #6%.g'

•failure of standby amplier #6%.h'

•failure of tone generator or message memory #6%.i'

•failure of speaker circuits #6%.;'

– 1short circuit9 !reak2

•failure of connection between decentralised systems #6%. o'

•failure of connection between PA system and emergency detectionsystem

–usuall" this sureillance is done !" the emergenc" detection s"stem#6%6'

EN-60849

Sr3eilla$ce

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• Micro%o$e mo$i#ori$, me#o5'

– 9lectrical monitoring :

• $isadvantage: conversion from sound to voltage cannot be monitored, e.g. when the diaphragm isdamaged

–  Acoustic monitoring

• a sound generator sends an acoustic signal to thecapsule

• the acoustic and electric function of the capsule ismonitored   very safe method 8

EN-60849

Mo$i#ori$, o& #e Micro%o$e

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a53a$#a,e star wiring possible.

5i'a53a$#a,e speakers must be modied or special

speakers must be used not suitable fore6isting speaker circuits

• Me#o5' o& S%ea>er Circi#Sr3eilla$ce– %remind that the critical signal path ends at the speaker;s

connector&

– . Mo$i#ori$, 7i# DC crre$# 

EN-60849

Mo$i#ori$, S%ea>er Circi#'

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 A53a$#a,e connection of di

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– 2. (oo% *ac> 

 A53a$#a,e connection of dicult %linemust be installed from speaker to speaker&e6pansion of old systems complicated whenstar wiring was used, line back necessary 

EN-60849

Mo$i#ori$, S%ea>er Circi#'

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–  4. *ac> Si,$al o$ Same (i$e

 A53a$#a,e: connection of dier Circi#'

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• Sa&e# A,ai$'# E?#er$al $@e$ce

– Pre7recorded messages and eventuallyattention7drawing signals

• must be stored in a non7volatile memory %solidstate memory, no mechanical devices& #$%7i'

• availability must be monitored continuously 

• e6ternal sources shall not be able to corrupt or

derange the store or its contents

EN-60849

E3aca#io$ Me''a,eMemor 

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5e?uirements

@n henstallation

!oncerning the nstaller 

EN-60849

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$#er&ace i# Emer,e$cDe#ec#io$ S'#em  /;.;1

• Co$#i$o' Mo$i#ori$,• he communication link between the emergency

detection system and the sound system isnormally monitored by the emergency detectionsystem

• No#iBca#io$' #o #e Emer,e$c

De#ec#io$ S'#em• he sound system must transfer minimum onefault information %any failure& to the emergencydetection system

EN-60849

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 EN-60849

Secri# )$c#io$'

• Re5$5a$# )acili#ie'– Beeping the Power #$%&m'

• an emergency power supply must be installed always

– Beeping the Croadcast #$%&g'

• “#ailure of a single amplier or loudspeaker circuitshall not result in total loss of coverage in theloudspeaker area served.”

– architecture of the speaker circuit 

– conguration power ampliers

• 96ception: regional directives for small buildings

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 EN-60849

Emer,e$c Po7er S%%l 

• *a##er' Ca%aci# #6%

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 EN-60849

 A4C7wiring with * ampliers  A4C7wiring with standby amplier 

*

 A

ee%i$, o& *roa5ca'#

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 EN-60849

 A

E?am%le corri5or 

*

E?am%le 7i5e area

*

 A• Aco'#ic Sol#io$• !onnection of speakers

by turns on the lines Aand C in each direction

• n case of a line;s failure,

the speaker area keepsserved ade?uate %smallgaps of coverage only&

ee%i$, o& *roa5ca'#

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 EN-60849

Di3i5e5 Emer,e$cS%ea>er Fo$e'

• Emer,e$c S%ea>er Fo$e' #$%&k'

– $ivision into areas depending on evacuationmethod

• responsible: authorities• Cri#eria' &or Di3i'io$ #$%&l'

– /& neighbour ones shall not disturb

– *& ma6imum one loudspeaker one per

emergency detection one• responsible: authorities, planer 

.

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 EN-60849

3in. levelH- dCA

Iuiet levelE- dCA

3a6./*0 dCA

H 7 *0 dCA Alarm signal level

"ound pressure level

 .C. /00 dCA

 .C. G0 dCA Joise level

So$5 Pre''re (e3el --

• A##e$#io$-Dra7i$,Si,$al' 'Anne6 !+

•minimum: H- dCA,in rest areas: E- dCA

•H 7 *0 dCA abovebackground noise

•ma6imum: /*0 dCA

• the sound pressure

levelsof all relevant areasmustbe conrmed and beingdocumented #=%7 a'

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 EN-60849

Me''a,e'

• he standard does not write specic

value for the sound pressure level ofthe reports. nstead it prescribes aspecic value of the intelligibility .

So$5 Pre''re (e3el -- 

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 EN-60849

$#elli,i!ili# 

• $#elli,i!ili# o& Me''a,e'• he ntelligibility of messages must be e?ual or higher than

0.E !" %common intelligibility scale ": 0,-& #6%&'

• his value must be obtained in each area #6%&'

• n a di>cult acoustic environment, it is preferable to carry

out an acoustical simulation

• Mea'ri$, a$5 Docme$#a#io$ o&

$#elli,i!ili# • !onrmation of intelligibility must be documented #=%7 a'

• Application of acknowledged with restrictions 'Anhang A+• !orrelation curves to !" in 'Anne6 C+

• A specialised company may measure the

intelligibility 

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 EN-60849

 Alarm Si,$al' --

• A##e$#io$-Dra7i$, Si,$al • minimum one suitable attention7drawing signal before

message %refer to 9J (-E& #$%& e'

• $istinguishable attention7drawing signals at di

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 EN-60849

• Pre-recor5e5 me''a,e'• All messages must be clear, short and pre7

 planned.

• (e$,a,e • Cuyer should specify the used language%s&.

 Alarm Si,$al' --

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 EN-60849

Docme$#a#io$ --

• O%era#io$ Ma$al #=%&'– must be ?uickly available

%preferable at each operation place&

– !ontents:

• practical operation of the system

• action to be taken in case of systemfailure

– Performance

• graphically if possible

• in preferred language

• bound document %copy&

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 EN-60849

• S'#em Docme$#a#io$ #=%7a'

– o be kept by Lser or 3aintenance !ompany 

– !ontents:

• locations of each part of the devices• measuring results of the system

– mpedance of each speaker circuit 

– set values %when adMustable, e.g. volume&

– sound pressure level%s&– intelligibility 

Docme$#a#io$ --

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 EN-60849

•Mai$#e$a$ce $'#rc#io$' #=%.%7'

–o be kept by Lser or 3aintenance !ompany 

–!ontents:• 3aintenance procedures %order of works&

• 3aintenance intervals

• Parts for maintenance, spare parts, special tools

• "uppliers• eventually test certicates

Docme$#a#io$ -2-

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 EN-60849

5e?uirements

on the @peration

!oncerns the user 

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 EN-60849

•(o, *oo> #=%7!'• 5esponsible person must take care on

it 

–!ontents:• details of all emergency cases

• details of tests and routine checks

• details of occurred failures and the

repair 

Docme$#a#io$ -4-

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EN

Secri# o& O%era#io$

• Mai$#e$a$ce #=%.%&'• should be done twice a year %maintenance and

test&

•to be carried out by competent person

• Re'%o$'i!le %er'o$ #$%7'• nominated by owner 

• is responsible for maintenance

• must be trained• manages the log book