E2S BExBG21D User manual

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EuropeanSafetySystemsLtd. Impress House, MansellRoad, Acton, London [e-mail] Tel: [phone]
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DocumentNo. IS2492-PIssue D18-03-10 Sheet1of 4(1)
INSTRUCTIONMANUAL(ATEX/IECEx)
BExBG21DFlameproofXenon Beacon
ForuseinFlammableGasand DustAtmospheres
1)Introduction
TheBExBG21Disaflameproofbeaconcertifiedtomeetthe
requirementsoftheATEXdirective94/9/ECandtheIECEx
scheme.Thebeaconproducessynchronisedvisualwarning
signalsandcan be used inhazardousareaswhere
potentiallyflammablegasanddustatmospheresmaybe
present. TheBExBG21Dhascan be used inZone1and
Zone2areaswithgasesingroupsIIA,IIBandIICand
TemperatureClassificationsofT1,T2,T3and T4inan
ambienttemperatureupto+55ºC.Thebeaconcan alsobe
used atan ambienttemperatureupto+70ºCwitha
temperatureclassificationofT3.Theunitscan be usedin
Zone21andZone22areasforcombustibledustsandhave
an IPratingofIP67andasurfacetemperatureratingof
T135ºCiftheupperambienttemperatureisrestricted to
+55ºCorT200ºCwithan theupperambienttemperatureof
+70ºC.The BExBG21Dbeaconhastwoxenontubesand
can producethree different flashpatterns.
2)Marking
All unitshavearatinglabel,whichcarriesthefollowing
important information:-
UnitType No. BExBG21D
Input Voltage: DC Units24Vor48V
ACUnits230Vor115V
Code: ExdIICT4Ta–50ºCto+55ºC
ExdIICT3Ta–50ºCto+70ºC
ExtDA21IP67T135ºCbased onmaxTaof+55ºC
ExtDA21IP67T200ºCbased onmaxTaof+70ºC
CertificateNo’s KEMA00ATEX2006
IECExKEM10.0002
Warnings: DONOTOPENWHENANEXPLOSIVE
GAS ORDUSTATMOSPHEREISPRESENT
COVERBOLTSCLASS A4-80
USE HEATRESISTINGCABLES ANDCABLEGLANDS
(Rated 110ºC)ATAMB. TEMPERATURES OVER40ºC
YearofConstruction/ i.e. 10 / 1DB72000001
SerialNo.
3) TypeApprovalStandards
ThebeaconhasECTypeExaminationandIECExcertificates
issuedbyKEMAandhasbeenapproved tothefollowing
standards:-
EN60079-0:2006 IEC60079-0:2004(Ed4) General Requirements
EN60079-1:2007 IEC60079-1:2007 (Ed6) Flameproof Enclosure‘d’
EN61241-0:2006 IEC61241-0:2004(Ed1)DustGeneral
Requirements
EN61241-1:2004 IEC60079-1:2004(Ed1)DustEnclosurestD
4) Installation Requirements
Thebeaconmustbeinstalled inaccordancewiththelatest
issuesoftherelevantpartsoftheBSEN60079
specificationsortheequivalentIECspecifications–
Selection,Installationandmaintenanceofelectrical
apparatusforuseinpotentiallyexplosiveatmospheres(other
thanminingapplicationsorexplosiveprocessingand
manufacture):-
EN60079-14:2008 ElectricalInstallationsinHazardous
IEC60079-14:2007 (Ed4) Areas(otherthan mines)
EN60079-10:2003 Classification of HazardousAreas
IEC60079-10:2008 (Ed1)
Theinstallationoftheunitsmustalsobeinaccordancewith
anylocalcodesthatmayapplyandshouldonlybe carried
outbyacompetentelectricalengineerwhohasthe
necessarytraining.
5) Zones,Gas Group, Category,IPRating and
TemperatureClassification
TheBExBG21DbeaconhasbeencertifiedExdIICT3Ta–
50ºCto+70ºCandExdIICT4Ta–50ºCto+55ºCforgas
andExtDIP67T200ºCbasedonmaxTa+70ºCandT135ºC
basedonmaxTa+55ºCfordust. Thismeansthattheunits
can be installed inlocationswiththefollowingconditions:-
Area Classification Gas:
Zone1
Explosivegasair
mixturelikelytooccurin
normaloperation.
Zone2
Explosivegasairmixturenotlikelytooccur,
andifit does, it willonlyexist forashort time.
GasGroupings:
GroupIIA
Propane
GroupIIB
Ethylene
GroupIIC
HydrogenandAcetylene
TemperatureClassification:
T1
400
o
C
Amb. +70ºC
T2
300
o
C
Amb. +70ºC
T3
200
o
C
Amb. +70ºC
T4
135
o
C
Amb. +55ºC
0518
CEMarking
Notified BodyNo.
90º
II 2G/D
Epsilonx:
Equipment Groupand
Category:

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DocumentNo. IS2492-PIssue D18-03-10 Sheet2of 4(2)
Area Classification Dust:
Zone21
Explosivedustairmixturelikelytooccurin
normaloperation.
Zone22
Explosivedust airmixturenot likelyt
ooccur, and
ifit does, it will onlyexist forashort time.
IPRating: IP67 T200ºCTa< +70ºC
T135ºCTa< +55ºC
EquipmentCategory: 2G/D
AmbientTemperatureRange: -50°Cto+70°C
(T3< 55ºC)
6) Beacon Location and Mounting
Thelocationofthebeaconshouldbemadewithdueregard
totheareaoverwhichthewarningsignalmustbe visible.
Theyshouldonlybefixedtoservicesthatcan carrythe
weight oftheunit.
SAFETYWARNING: TheBExBG21Dbeaconmustbe
mounted withtheirflashdomeinapositionbetweenupright
and90ºasshown.
Thebeaconsshouldbesecurelyboltedtoasuitablesurface
usingthe7mm diameterboltholesinthestainless steelU
shapedmountingbracket(seefigure1).Theanglecan then
beadjustedasrequired butthemountingrestrictionsmust be
observed(seeabove). Thiscan be achieved bylooseningthe
twolarge bracketscrewsintheside oftheunit, whichallow
adjustmentinstepsof 18°.Oncompletionoftheinstallation
thetwolarge bracketadjustmentscrewsonthesideofthe
unitmustbe fullytightened toensurethattheunitcannot
moveinservice.
SAFETYWARNING: Theflashdomeguardmustnotbe
removedfromtheunitatanytime.
7) Access to theFlameproofEnclosure
Inordertoconnecttheelectricalsupplycablestothebeacon
itisnecessarytoremovetheflameproofcovertogainaccess
totheflameproofchamber.Toachievethisremovethefour
M6hexagonsocketheadscrews(see figure2)andwithdraw
theflameproofcovertakingextremecarenottodamagethe
flameproofjointsintheprocess.
Notethefour M6screwsareClass A4-80 stainlesssteel
andonlyscrewsofthiscategorycanbeusedonthese
beacons. Itisthereforeimportantthatthesescrewsand their
springwashersarekept inasafeplaceduringinstallation.
Oncompletionofthecablewiringinstallationtheflameproof
jointsshouldbe inspected toensurethattheyareclean and
thattheyhavenotbeendamaged duringinstallation.Also
checkthattheearthbondingwirebetweenthetwocasting
sectionsissecureandthe‘O’ringsealisinplace.When
replacingtheflameproofcovercastingensurethat it issquare
withtheflameproofchambercastingbeforeinserting.
Carefullypushthecoverinplaceallowingtimefortheairto
be expelled.Onlyafterthecoverisfullyinplaceshouldthe
fourM6StainlessSteelA4-80coverboltsandtheirspring
washerbe inserted andtightened down.If thecoverjams
whileitisbeinginserted,carefullyremoveitandtryagain.
Neverusethecoverboltstoforcethecoverintoposition.
8) PowerSupplySelection
Itisimportantthatasuitablepowersupplyisusedtorun the
beacon.The powersupplyselectedmusthavethenecessary
capacitytoprovide theinputcurrenttoallofthebeacons
connected tothesystem.
Thefollowingtableshowsthe inputcurrenttakenbythe
variousunits:-
UnitType NominalI/PInput Max.
VoltageCurrentI/PVolts
BExBG21D 24VDC 1.2A 28V
BExBG21D 48VDC 600mA 56V
BExBG21D 230VAC280mA 253V
BExBG21D 115VAC560mA 126.5V
Theabovetablealsoshowsthe maximumvoltagesatwhich
thebeaconscan be operated.
9) CableSelection
Whenselectingthecablesizeconsiderationmustbegivento
theinputcurrentthateachunitdraws(see tableabove),the
4off M6CoverScrews
ExternalEarth
Terminal
Figure2
90º
Flashdome
Guard
Flameproof
Chamber
Flameproof
Cover
S/SBracket
Figure1

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DocumentNo. IS2492-PIssue D18-03-10 Sheet3of 4(3)
numberofbeaconsonthelineandthelengthofthecable
runs.Thecablesizeselected musthavethenecessary
capacitytoprovide theinputcurrenttoallofthebeacons
connected totheline.
SAFETYWARNING: IftheBExBG21Dbeaconisusedat
highambienttemperatures,i.e.over+40ºC,thenthecable
entrytemperaturemayexceed+70ºCandthereforesuitable
heatresistingcablesmustbe used,witharated service
temperatureofat least 110ºC.
10) Earthing
BothACandDCbeaconunitsmustbeconnectedtoagood
qualityearth.Theunitsareprovided withinternaland
externalearthingterminalswhicharebothlocated onthe
terminalchambersectionoftheunit(see figures2and3).
Whenusingtheinternalearthterminalensurethatthe
stainless steelM4flatwasherisbetweentheincoming earth
wireandtheenclosure.
Whenusingtheexternalearthterminalacablecrimplug
must be used. Thecablelugshouldbelocatedbetweenthe
twoM5stainless steelflat washers. TheM5stainless steel
springwashermust be fixed betweentheouterflat washer
andtheM5stainless steelnut toensurethat thecablelugis
secured against looseningandtwisting.
Theinternalearthbondingwireensuresthatagoodquality
earthismaintained betweentheflameproof chambercasting
andtheflameproofcovercasting.
11) CableGlands
TheBExBG21Dbeaconhasdualcableglandentrieswhich
haveanM20 x1.5entrythreadasstandard.Onlycable
glandsapprovedforEx‘d’applicationscan be used,which
mustbe suitableforthetype ofcablebeingusedandalso
meettherequirementsoftheEx‘d’flameproofinstallation
standardEN60079-14:2008/ IEC60079-14:2007.
Whenonlyonecableentryisusedtheotheronemustbe
closedwithanEx‘d’flameproofblankingplug, whichmust be
suitablyapproved fortheinstallationrequirements.
Forcombustibledustapplications,thecableentrydeviceand
blankingelementsshall be intype ofexplosionprotection
increasedsafety"e"orflameproofenclosure"d"andshall
haveanIP6XratingaccordingtoEN60529:1992
SAFETYWARNING: IftheBExBG21Dbeaconisusedat
highambienttemperatures,i.e.over+40ºC,thenthecable
entrytemperaturemayexceed+70ºC
andthereforesuitableheatresistingcableglandsmustbe
used, witharated servicetemperatureofat least 110ºC.
12) CableConnections
Thecableconnectionsaremade intotheterminalblockson
theelectronicpcbassemblylocatedintheflameproof
enclosure.Seesection7ofthismanualforaccesstothe
flameproofenclosure.Afour-wayterminalblockisprovided
ontheACbeacons,withfeedsbothboards,thereforethere
aretwoliveterminalsandtwoneutralterminalssothatboth
inputandoutputwiringcan be terminated ifmorethan one
beaconisbeingwiredtoasinglesupply.OntheDCunits
thereisathree-wayterminaloneachoftheboardsmaking
uptheelectronicsassembly.The terminalblocksarewiredin
parallelwitheachterminalhavinga+veterminala-ve
terminalandanS2secondstageterminal.Thereforeboth
inputandoutputwiringcan be terminated ifmorethan one
beaconisbeingwired toasinglesupply
2off M20
CableEntries
InternalEarthTerminal
Figure3
InternalBonding
WireTerminal
BExBG2
1D
BeaconCoverInternalView
Figure4
Supply
Terminals
BExBG21DDC
21JouleBeacon
FlashPattern
Pin Header
BExBG21DAC
21 JouleBeacon
Figure5
Supply
Terminals
FlashPattern
Pin Header
Supply
Terminals

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DocumentNo. IS2492-PIssue D18-03-10 Sheet4of 4(4)
Wireshavingacrosssectionalareaofupto2.5mm²can be
connected toeachterminalway.If an input andoutputwireis
required a2.5mm²wirecan be connectedtoeachterminal
way.Whenconnectingwirestothe terminalsgreatcare
shouldbe takentodressthewiressothatwhen thecoveris
inserted intothechamberthewiresdo notexertexcess
pressureontheterminalblocks.Thisisparticularlyimportant
whenusingcableswithlarge crosssectionalareassuchas
2.5mm².
13) Synchronised Operation
All BExBG21Dbeaconsthatareconnected tothesame
supplylinewill havesynchronised flashpatternsprovided
thattheyareset tothesameflashpattern.
14) Flash Patterns
TheBExBG21Dbeaconshavetwoxenontubesandcan
producethree differentflashpatternsaslistedbelow.The
flashpatternsaresetinternallybytheselectionofpin
headers.OntheDCbeaconstheflashpatternsetcan be
changed externallytoproduceasecondstagebyconnecting
terminalS2to–vesupplyline.TheACbeaconsdonothave
asecondstage.
DC Beacons Stage2
SingleFlash@1Hz(Bothtubesflashingtogether) AF
AlternateFlash@2Hz(Tubesflashingalternately)SF
DoubleStrike@1Hz(OneTube flashingimmediatelySF
aftertheother)
SingleFlash
AlternateFlash
DoubleStrike
ACBeacons
SingleFlash@1Hz(Bothtubesflashingtogether)
AlternateFlash@2Hz(Tubesflashingalternately)
DoubleStrike@1Hz(OneTube flashingimmediately
aftertheother)
SingleFlash
AlternateFlash
DoubleStrike
15) End ofLineMonitoring (DC Units)
OntheBExBG21DDCbeacon,dcreverselinemonitoring
can be usedifrequired.All DC beaconshaveablocking
diode fittedintheirsupplyinputlines.Anend ofline
monitoringdiode oran endof linemonitoringresistorcan be
connectedacrossthe+veand–veterminals.If an end of line
resistorisuseditmusthaveaminimumresistancevalueof
3k3ohmsandaminimumwattage of0.5wattsoraminimum
resistancevalueof500ohmsandaminimumwattage of2
watts.
A
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