UniPOS 6202L User manual

5.SERVICESCHEDULE
Table1
TaskPeriodicity
1.Inspectionforvisiblephysicaldamageweekly
2.Satisfactoryoperationtest monthly
3.Checkandcleandustcontaminationevery6months
4.CheckandcleanbaseandheadcontactsandconnectionsAnnually
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6.WARRANTY
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ThemanufacturerguaranteesproductcompliancewiththeEN54-7:2001.Thewarrantperiodis36
monthsfromthedateofpurchase,providingthatrequirementscoveredinsection5havebeen
observed.
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UniPOSLtd
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SHORTCIRCUITISOLATOR6202L
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1.INTRODUCTION
Shortcircuitisolator6202Lisdesignedtocutoff(toisolate)ashortcircuitedsegmentinaline
(loop).Inthiswaythevariableunitsñautomaticfiredetectors,manualcallpointsandothers,which
arenotintheshortcircuitedsegmentremainactiveandtheline(loop)protectionlevelishigher.
Whereisolatorsarenotincluded,incaseofashortcircuitthefirecontrolpanelinterruptsthepower
supplyoftheline(loop)andallunitsstopworking.
Asegmentisapartofaloopbetweentwoadjacentisolators.
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2.TECHNICALDATA
2.1.Supplyvoltage-(18-26)VDC
2.2.Currentconsumptioninquiescent
state,at26VDC-notmorethan100µA
2.3.Equivalentresistanceofisolatorinaline:
-inquiescentstate-<1Ω
-inalarmstate->6,5kΩ
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2.4.Connectiontofirecontrolpanel-two-wire
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2.5.Degreeofprotection-IP40
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2.6.Operatingtemperaturerange-minus10°—/plus60°—
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2.7.Temperaturelimits-minus40°—/plus70°—
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2.8.Relativehumidityresistance-(92+3
-2)%at25°—

2.9.Dimensions(baseincl.):
-diameter-∅106mm
-height-48mm
2.10.Weight(baseincl.)-0,150kg
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3.STRUCTUREANDFUNCTION
Theshortcircuitisolatorlayoutisseenonfig.16202Lconsistsoftwomainparts:abaseandan
isolatorhead.Thelattercomprisesacircuitboard.Thecontactplatesarefixedtothebase.
Theisolatorheadisfixedonthebasebythemeansofbayonetjoints.Whenlocatingtheisolator
headonthebase,makesurethebenchmarkstandsabout20mmbeforetherespectivebench
markonthebase;thenrotateclockwisetofix.Thebenchmarksshouldfullycoincidewhenfixed.
Option:Aflatpointscrewisprovidedontheadapterheadtopreventunauthorizedremoval.A2
mmtipscrewdriverisrequiredforlockingandunlocking.
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TE
ST
Isolatorhead
Base
Leadingbench
marks
LED
LED
Flatpointscrew
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Fig.1
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Theshortcircuitisolator,connectedbetweentwoadjacentsegments,monitorstheresistanceofthe
segments.Whenresistancevaluereachesafixedlowthreshold,theisolatorswitchesovertoalarm
state.ThesurfaceyellowLEDsilluminateandtheline(loop)powersupply(negativewire)is
interruptedinisolatoríspointofconnection.Whentheresistanceoftheisolatedwiresegmentis
restoredtothenormallimits,theisolatorautomaticallyswitchesovertoitsquiescentstate.The
LEDsextinguishandthepowersupplyisresumed.Isolatordiagramisfullysymmetricalinrelation
totheinputandoutputwiresegment.InLineconfiguration(fig.2.1.)duetoonesidepowersupply
theisolatoriscapabletoisolateshortcircuitdetectedinthesegmentaftertheisolatorinrelationto
thefirecontrolpanel.InLoopconfiguration(fig.2.2.)duetobothsidespowersupplytheisolatoris
activeinbothdirectionsñi.e.theshortcircuitedwiresegmentisisolatedbytwoadjoiningisolators.
WheninLineconfigurationconnectisolatorsatthebeginningofaline;inLoopconfiguration
connectisolatorsatbothloopends;useoneisolatorformaximum32firedetectors.
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4.PREPARINGTHEISOLATORFOROPERATION
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4.1.Connectiondiagram
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Connectiondiagramofisolatorbasetoshieldedfirealarmlineisshownonfig.2.1ñline
configuration,andonfig.2.2ñloopconfiguration.
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2
5
1
4
2
1
54
4
5
12
Shield
FS6000Fire
ControlPanel
Firedetector
Address1
IsolatorFiredetector
Address127
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Fig.2.1.
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1
5
2
4
2
1
54
1
54
2
54
12
5
1
4
2
Shield
Firedetector
Address001
Isolator
Shield
FS6000Fire
ControlPanel
Firedetector
Addressxxx
Firedetector
Address127
Isolator
FS6000Fire
ControlPanel
Fig.2.2.
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4.2.Ãounting
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Separatethebasefromtheheadbyturningtheisolatorheadinananti-clockwisedirection.
Feedtheconnectioncablethroughthecableentryinthecentreofthebase.Fixthebaseonthe
ceilingusingappropriatefixings.Completethewiringasshownonfig.2.1or2.2.
Replacetheisolatorheadonthebasebyofferingtheisolatorheadtothebaseensuringbench
marksarenomorethan20mmapart.Rotatetheisolatorheadinaclockwisedirectiontocomplete
location.
Locktheisolatorheadtothebasebyscrewingtheflatpointscrew,usinga2mmtipscrewdriver,
ensurenottoovertighten.
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4.3.Testing
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Accordingtofig.2.1theisolatorissuppliedwithoutputvoltage18VDCñ26VDCandoutput
resistancenotlowerthan20Ω.Terminals4and1aretobeterminatedbyresistor<20Ω.Upon
activationtheyellowLEDisilluminatedandremainsactiveuntilshortcircuitiseliminated.
Exchangethewires,connectedtoterminals1and2.Completethesametestprocedureto
terminals4and2.
Shortcircuitisolatorsaretested,inrealconditions,byterminatingthenegativeandpositivewires
(aftertheisolator)ofthelineorloopconfiguration.