E2S BExCL15-05D User manual

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European SafetySystemsLtd. Impress House, MansellRoad, Acton, London [e-mail] Tel: [phone]
www.e-2-s.com Fax: [phone]
DocumentNo. IS2442-PIssue E23-04-10 Sheet 1of5
INSTRUCTIONMANUAL(ATEX/IECEx)
BExCL15-05D
FlameproofCombined Loudspeaker/Beacon
1)Introduction
TheBExCL150-05Disaflameproof combined loudspeaker/
beaconwhichiscertifiedtomeettherequirementsofthe
ATEX directive94/9/EC andtheIECExScheme.The
loudspeakersectionproducesa15 watt audiosignalandthe
beaconsectionproduces asynchronised visualwarning
signal. Therearethree loudspeakersectionversions,8ohm,
16 ohmor100VLinetransformer. On100Vlinetransformer
unitstherearefouroutputtappings andtheunitproduces
outputlevelsinthe112dB(A)range.Theunit can be used in
hazardousareaswherepotentiallyflammableatmospheres
may be present. The unit can be used inZone1andZone 2
areaswithgases ingroupsIIAandIIBandwithTemperature
ClassificationsofT1, T2, T3andT4.
2)Marking
All unitshavearatinglabel, whichcarries thefollowing
important information:-
UnitType No. BExCL15-05D
Loudspeaker8ohmor 16ohm
Impedance:100VLine
BeaconInputDC Units12Vor 24Vor 48V
Voltage: AC Units230Vor 115V
Code: ExdIIBT4forTa–50°Cto+70°C
CertificateNo. KEMA01ATEX2223X
IECExKEM10.0025X
“Warnings” DONOTOPENWHENANEXPLOSIVE
GAS ATMOSPHEREISPRESENT
COVERBOLTSCLASS A4-80
USE HEATRESISTINGCABLES AND
CABLEGLANDS (Rated 110ºC) AT
AMB. TEMPERATURES OVER40ºC
Year ofConstruction/
Serial No. i.e. 10 / 1CL21000001
3) TypeApprovalStandards
TheunitshaveanEC Type examinationcertificateissuedby
KEMAandhavebeenapproved tothefollowingstandards:-
EN60079-0:2006 IEC60079-0:2004(Ed4) General Requirements
EN60079-1:2007 IEC60079-1:2007 (Ed6) Flameproof Enclosure‘d’
4) Installation Requirements
Theunit mustbe installed inaccordancewiththelatest
issuesoftherelevantpartsofthe EN60079specifications or
theequivalentIEC specifications–Selection,Installationand
maintenance ofelectricalapparatusforuse inpotentially
explosiveatmospheres(otherthanminingapplicationsor
explosiveprocessingandmanufacture):-
EN60079-14:2008 ElectricalInstallations inHazardous
IEC60079-14:2007 (Ed4)Areas (other than mines)
EN60079-10:2003 Classification of Hazardous Areas
IEC60079-10:2008 (Ed1)
Theinstallationoftheunit mustalso beinaccordance with
any localcodesthatmayapplyandshouldonlybe carried
outbyacompetentelectricalengineerwhohasthe
necessarytraining.
5) Zones,Gas Group, Categoryand Temperature
Classification
TheBExCL15-05Dunit hasbeencertifiedExdIIBT4forTa
–50ºCto+70ºC.Thismeansthattheunitscan be installedin
locationswiththefollowingconditions:-
Area Classification:
Zone1Explosivegasairmixturelikelytooccurin
normal operation.
Zone2Explosivegasairmixturenotlikelytooccur,
andifit does, it will onlyexist for ashort time.
GasGroupings:
GroupIIAPropane
GroupIIBEthylene
Equipment Category: 2G
TemperatureClassification:
T1 400oC
T2 300oC
T3 200oC
T4 135oC
AmbientTemperatureRange:
-50°Cto+70°C
0518
II 2G
Epsilonx:
Equipment Group
andCategory:
CE Marking:
Notified BodyNo.

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European SafetySystemsLtd. Impress House, MansellRoad, Acton, London [e-mail] Tel: [phone]
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DocumentNo. IS2442-PIssue E23-04-10 Sheet 2of5
6) Location andMounting
Thelocationoftheunit shouldbemadewithdueregardto
theareaoverwhichboththeloudspeakerandbeacon
warningsignalmustbeaudibleandvisible.Theunit should
onlybe fixedtoservicesthat can carrytheweight oftheunit.
Theunit shouldbesecurelyboltedtoasuitablesurfaceusing
the7mmdiameterbolt holesinthestainless steelUshaped
mountingbracket(see figure1). Theanglecan thenbe
adjusted inthedirectionsuchthatitswarningsignalcanbe
bothheardandseen.Thiscan be achievedbylooseningthe
twolarge bracketscrewsintheside oftheunit, whichallow
adjustmentinstepsof 18°.Oncompletionoftheinstallation
thetwolarge bracketadjustmentscrewsonthesideofthe
unitmustbe fullytightened toensurethattheunitcannot
moveinservice. moveinservice.
7) SafetyWarning (ElectrostaticHazard)
TheacoustichornsectionismadeofABSPlastic,therefore
toavoidapossibleELECTROSTACTICCHARGEtheunit
must onlybe cleanedwithadampcloth.
8) Access to theFlameproofEnclosure
Inordertoconnecttheelectricalsupplycablestothe unit it is
necessarytoremovethebeaconsectiontogainaccess to
theflameproof chamber. To achievethisremovethefourM6
hexagonsocketheadscrews(see figure2)andwithdrawthe
beaconsectiontakingextremecarenottodamagethe
flameproofjointsintheprocess.
Notethefour M6screwsareClass A4-80 stainlesssteel
andonlyscrewsofthiscategorycanbeusedonthese
sounders. Itisthereforeimportantthatthese screwsand
theirspringwashersarekeptinasafeplace during
installation.
Oncompletionofthecablewiringinstallationtheflameproof
jointsshouldbe inspected toensurethattheyareclean and
thattheyhavenotbeendamaged duringinstallation.Also
checkthattheearthbondingwirebetweenthetwocasting
sectionsissecureandthe‘O’ringsealisinplace.When
replacingthebeaconsectioncasting,ensurethatit issquare
withtheloudspeakersectionchambercastingbefore
inserting. Carefullypushthebeaconsectioninplace allowing
timeforthe airtobe expelled.Onlyafterthe beaconsection
castingisfullyinplace shouldthefour M6Stainless Steel A4-
80 coverboltsandtheirspringwasherbeinserted and
tightened down.If thebeaconsectionjamswhileit isbeing
inserted,carefullyremoveit andtryagain.Neveruse the
cover boltstoforcethebeaconsectioncastingintoposition.
Incaseof repair, contactthemanufacturerforinformationon
thedimensionsoftheflameproofjoints.
9) PowerAmplifierSelection
Itisimportantthattheloudspeakersectionisconnected toa
poweramplifierthathasoutputsthatarecompatibletothe
type ofloudspeakerbeingused.Loudspeakerswitha100V
Linematchingtransformerfitted mustbe connectedtoa
poweramplifierwitha100Vlineoutput. Lowimpedance8
ohmor16ohmloudspeakersmustbeconnectedto
amplifierswithasuitablelowimpedance output. When
selectingthecablesizeconsiderationmustbe giventothe
currentthat eachunit draws,thenumberof loudspeakerson
thelineandthelengthofthecableruns.
Thefollowingtableshowstherange ofloudspeakers:-
Unit TypeInput Wattage Max.
I/P Volts
BExCL15-05D100VLine15W100V
BExCL15-05D8ohm15W10.95V
BExCL15-05D16 ohm15W15.49V
TheabovetablealsoshowsthemaximumAC signal voltages
at whichtheloudspeakerscan be operated.
Thecurrentlevelstakenbytheeachloudspeakerwill depend
onwhichoutputtappinghas beenselected(seesection14of
thisinstructionmanual).The100VLineunitshaveoutput
levelsof15W,7.5W, 3Wand1W.
10) Beacon PowerSupplySelection
Itisimportantthatasuitablepowersupplyisusedtorun the
beaconunitsThepowersupplyselected musthavethe
necessarycapacitytoprovidetheinputcurrenttoall ofthe
beaconunitsconnectedtothesystem.
Thefollowingtableshowsthe inputcurrenttakenbythe
beaconsectionofthevariousunits:-
S/SMounting
Bracket
Sounder
Section
Flashdome
Guard
PlasticAcousticHorn
Please see SafetyWarning
InSection 7of thismanual
Fig1
Beacon
Section
4off Cover Screws ExternalEarth
Terminal
Fig2

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DocumentNo. IS2442-PIssue E23-04-10 Sheet 3of5
Unit TypeInput BeaconMax.
VoltageCurrentI/PVolts
BExCL15-05D24VDC 300mA30V
BExCL15-05D12VDC 750mA15V
BExCL15-05D48VDC 180mA58V
BExCL15-05D230VAC55mA264V
BExCL15-05D115VAC140mA126V
Theinputcurrenttothebeaconsectionwill varyaccordingto
thevoltage inputlevel. Thecurrentlevelsshownaboveare
fornominalinputvoltage.The12V,24Vand48VDCunits
haveaconvertercircuit andthereforetheinputcurrentlevel
will decreaseslightlyastheinputvoltage inincreasedand
will increase slightlyastheinput voltage isreduced.
Theabovetablealsoshowsthe maximumvoltagesatwhich
thebeaconsectioncan be operated.
11) CableSelection
Whenselectingthecablesizeconsiderationmustbegivento
theinputcurrentthateachunit draws(seetablesabove), the
numberofunitsonthelineandthelengthofthecableruns.
Thecablesizeselectedmusthavethenecessarycapacityto
provide theinputcurrenttoall oftheunitsconnectedtothe
line.
SAFETYWARNING: Iftheunit isusedathighambient
temperatures,i.e.over+40ºC,thenthecableentry
temperaturemay exceed +70ºCandthereforesuitableheat
resistingcables mustbeused,witharated service
temperatureofat least 110ºC.
12) Earthing
BothAC andDC unitsmustbeconnectedtoagood quality
earth.Theunitsareprovidedwithinternalandexternal
earthingterminals,whichareboth,locatedonthe beacon
sectionoftheunit (see figures2and3).
Whenusingtheexternalearthterminalacablecrimplug
mustbe used.Thecablelugshouldbe locatedbetweenthe
twoM5stainless steelflatwashers.TheM5stainlesssteel
springwashermustbe fixed betweentheouterflatwasher
andtheM5stainless steelnuttoensurethatthecablelugis
secured against looseningandtwisting.
Theinternalearthbondingwireensuresthatagoodquality
earthismaintained betweentheloudspeakersectioncasting
andthebeaconsectioncasting.
13) CableGlands
TheBExCL15-05Dunit hasdual cableglandentries which
haveanM20 x1.5entrythreadasstandardor aPG13.5
threadasaspecial. Onlycableglands approvedfor Ex‘d’
applicationscan be used, whichmust be suitablefor thetype
ofcablebeingused andalso meet therequirementsoftheEx
‘d’ flameproofinstallationstandardEN60079-14:2008/
IEC60079-14:2007.
SAFETYWARNING: Iftheunit isusedathighambient
temperatures,i.e.over+40ºC,thenthecableentry
temperaturemay exceed +70ºCandthereforesuitableheat
resistingcableglandsmustbe used,witharated service
temperatureofat least 110ºC.
IfahighIP(IngressProtection)ratingisrequired thena
suitablesealingwasher must be fitted under thecablegland.
Whenonlyonecableentryisusedtheotheronemustbe
closedwithanEx‘d’ flameproofblankingplug, whichmust be
suitablyapproved for theinstallationrequirements.
14) CableConnections
Thecombinedsounderbeaconunit BExCL15-05Dhas
separateprinted circuit boards intheloudspeakerand
beaconsections.Theterminalsforthe loudspeakerareon
theprinted circuit boardintheloudspeakersectionandthe
terminalsfor thebeaconareontheprinted circuit boardinthe
beaconsection(seefigures 4&5and6&7). Seesection8of
thismanualforaccesstotheenclosureandthewiring
diagramsat theendofthismanual.
LOUDSPEAKER CONNECTIONS(100VLine)
The100VLineloudspeakersarefittedwithafiveway
terminalblock.TerminalAiscommonandoneoftheother
terminalsB,C, DorEshouldbeselecteddependingonwhat
output level isrequired (seetablebelow).
TerminalsWattage
A- B15W
A- C7.5W
A- D3W
A- E1W
Asinglewirewithacross sectionalareaofupto4mm²can
be connectedtoeachterminalwayorifan inputandoutput
wireisrequired two2.5mm²wires can be connected toeach
terminalway.Whenconnectingwires totheterminalsgreat
careshouldbetakentodress thewireso thatwhenthe
beaconsectionisinserted intothechamberthewires do not
exert excess pressureontheterminalblocks.Thisis
particularlyimportantwhenusingcables withlarge cross
sectional areassuchas2.5mm² andabove.
LOUDSPEAKER CONNECTIONS(LowImpedance)
BExCL15-05D8ohmand16ohmlowimpedance
loudspeakershavedualinputterminalsonthepcb assembly
forinputandoutputwiring.Acableofupto2.5mm²can be
connected toeachterminal. If dclinemonitoringisused cut
thelinkontheboard(see figure7andsection14ofthis
manual).
InternalBonding Wire Terminal
InternalEarthTerminal
2off M20
CableEntries
Figure3

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BEACONCONNECTIONS
Thecableconnectionsaremade intotheterminalblockson
theelectronicpcbassemblylocatedinthebeaconsection
enclosure.Afour-wayterminalblockisprovidedonbothAC
andDC beacons.Thereforetherearetwoliveterminalsand
twoneutralterminalsfortheinputandoutputwiringonAC
units.OntheDC unitstherearetwo+veterminalsandtwo-
veterminalsfor theinput andoutputwiring.
Wireshavingacross sectionalarea ofupto4mm²can be
connected toeachterminalway.Whenconnectingwires to
theterminalsgreat careshouldbe takentodress thewires so
thatwires do notexert excesspressureontheterminal
blocks.Thisisparticularlyimportantwhenusingcables with
large cross sectional areassuchas2.5mm².
15) Synchronised Operation
All BExCL15-05Dbeaconunitsthatareconnectedtothe
samesupplylinewill haveasynchronisedflashrateatone
flasheverysecond.Toensurethattheunitswill be
synchronisedcheckthatthepinheaderisnotfitted,i.e.the
twoheaderpinsarenotshorted together(seeFigures4and
5).
16) Flip / Flop Operation
Twounitscan be mounted close toeachothertoformaflip-
flopoperation,wherethebeaconswill flashalternately.To
achievethismodeofoperation,fit apinheadertotheflip-
flopheaderpinsontheelectronics board,i.e.thetwoheader
pinsareshortedtogether, (seefigures4and5) onone of the
twobeacons.Thefirstflashonthebeaconthathasthe
headerfittedwill be delayedby½second.Thetwobeacons
will thenflashalternatelyevery½asecond.
A
B
C
D
E
17) Beacon End ofLineMonitoring (DC Units)
OnBExCL15-05DDCunits,dc reverselinemonitoringcan
be usedonthebeaconsectionif required.All DC unitshave
ablockingdiode fittedintheirbeaconsupplyinputlines and
an endoflinemonitoringdiode oran endoflinemonitoring
resistorcan be connectedacrossthe+veand–veterminals.
Ifan endoflineresistorisusedit musthaveaminimum
resistancevalueof 3k3ohmsandaminimumwattage of 0.5
wattsoraminimumresistance valueof 500ohmsandamin.
wattage of2watts.
18) LoudspeakerEndofLineMonitoring
OntheBExCL15-05Dloudspeaker section, dclinemonitoring
can be usedifrequired.Boththe100VLineunitsandthe
LowImpedanceunitshaveablockingcapacitorfitted.It
shouldbenotedthateachloudspeakerhas a1Mohmbleed
resistorconnectedacrosstheblockingcapacitorandthis
shouldbetakenintoaccountwhenselectingthevalueof the
endoflinemonitoringresistance.
Theendoflinemonitoringresistorcan beconnected across
theterminalsontheendoflineunit. Onthelowimpedance
unitscaremustbetakenwiththepolarityofthemonitoring
voltage.
L
L
N
N
Figure4
ACInput
Terminals
BExCL15-05DACBeaconSection
BExCL15-05DDCBeaconSection
Flip / Flop
Pin Header
Figure6
BExCL15
-
05D100VLineLoudspeaker Section
BExCL15-05D8ohmand16 ohmLoudspeaker Section
-
-
+ +
Link
S2
S3
C
N
L
DC Input
Terminals
Interconnecting
Terminals
Figure5
-
-
+
+
Flip / Flop
Pin Header
Figure7
Thermal Fuse84ºC

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DocumentNo. IS2442-PIssue E23-04-10 Sheet 5of5
On100Vlineunitsthe end oflineresistorusedmusthavea
minimumresistance valueof4k7ohmsandaminimum
wattage of2.5watts
Onlowimpedanceunitstheendoflineresistorusedmust
haveaminimumresistance valueof2kohmsandaminimum
wattage of0.5wattsoraminimumresistance valueof500
ohmsandaminimumwattage of2watts.Onthelow
impedanceunitscaremustbetakenwiththepolarityofthe
monitoringvoltage.If an endoflineresistorisfittedtoaunit
thelinksontheprintedcircuit boardsofall loudspeakersin
thelinemustbe cutforthedcblockingcapacitorstobein
circuit inorder todc monitor theline(see figure7).
Beacon
PCB
Unit No.2
L
N
Unit No.1
Loudspeaker
PCB
C157.5 31
Beacon
PCB
LNLN
Beacon
PCB
LN
C157.5 31
Loudspeaker
PCB
C15 7.5 31
Loudspeaker
PCB
UnitNo.3
Signal
BExCL15-05DACCombinedLoudspeakerUnit
+
-
Signal
+- C157.5 31+- C157.5 31+- C15 7.5 31
Loudspeaker
PCB
Beacon
PCB
Loudspeaker
PCB
Beacon
PCB
Loudspeaker
PCB
Beacon
PCB
Unit No.1 Unit No.2 UnitNo.3
BExCL15-05DDC CombinedLoudspeakerUnit