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Tie-FenLock 400 Depot Control System
FS-DES-STD-04Version 1.1
1 ABBREVIATIONS & ACRONYMS 2
2 INTRODUCTION 3
2.1 Executive Summary 3
2.2 OverviewofBenefits 5
3 OPERATIONAL OVERVIEW 6
3.1 General Operational Overview 6
3.2 Example of Operation 7
3.3 BackgroundOperations 9
3.4 MultipleVDUs 9
4 SYSTEM OVERVIEW 10
4.1 SystemCharacteristics 10
4.2 SystemArchitecture 13
4.2.1 ComputerBasedInterlocking 13
4.2.2 EquipmentHousing 14
4.2.3 VDU 16
4.2.4 Signals 17
4.2.5 AxleCounters 18
4.2.6 PointMachine 19
4.3 SystemInterfaces 21
4.3.1 InterfacestoOtherEquipment 21
4.3.2 CableRouting 23
4.3.3 Power Supply 23
5 FURTHER INFORMATION AND READING 24
1. Abbreviations & Acronyms
Term Definition
CCTV Closed Circuit Television
CCU Central Control Unit
DCS Depot Control System
Disbox Disconnection Box
DPPS Depot Personnel Protection System
EMC Electromagnetic Compatibility
EU European Union
FTN Fixed Telecommunications Network
HD High Definition
HMI Human-Machine Interface
I/P Input
LCD Liquid Crystal Display
LED Light Emitting Diode
LOPS Locally Operated Point System
NR Network Rail
O/P Output
REB Relocatable Equipment Building
RSSB Rail Safety and Standards Board
RSP Route Setting Panel
SIL Safety Integrity Level
SPT Signal Post Telephone
TD Train Describer
TOC Train Operating Company
UPS Uninterruptible Power Supply
Vac Volts, alternating current
Vdc Volts, direct current
2.1 Executive SummaryThisdocumentprovidesthesystemdescriptionfortheTie-FenLock400DepotControlSystem(DCS)foruseindepots,yardsandothernon-mainlineapplications.TheTie-FenLock400DCSisthemostadvancedsystemoftheTie-FenLockseries,providingafullsignallingsolution.
2. Introduction
Tie-FenLock Description
100 Locally Operated Point Switch (LOPS) – points are switched over by plunger local to a turnout.
200 Points Setting Panel (PSP) – each point end is operated using an individual button on the panel.
300 Route Setting Panel (RSP) – similar arrangement to the 200 system. However, it includes axle counter train detection and all points in a route are operated by a single button, or visual display unit (VDU).
400 Fully interlocked signalling system operated by a single control person, via a VDU.
ThecurrentUKinstallationsare:
• BritishSteel,Scunthorpe.Tie-FenLock100installationwith350pointends(1989-90)
• BombardierCentralRiversDepot,nearDerby.Tie-FenLock300installationincorporating29pointends,pointpositionindicatorsthroughoutandaxlecounters(2001)
• SiemensSouthamptonDepot.Tie-FenLock300installationincorporating10pointsindicatorsandapproximately25axlecounters(2002)
• ABPImminghamDepot.Tie-FenLock300installationincorporating10pointsand1RouteSettingPanel(2002)
• AlstomMordenDepot,London.ALondonUndergroundapplicationwith32pointends(2004)
• ChilternsWembleyDepot.Tie-FenLock400installationincorporating8pointends(2004)
• AlstomGoldersGreenDepot,London.ALondonUndergroundapplication(2006)
• ChilternsBanburyDepot,Banbury.Tie-FenLock400installationwith7pointends,fullyinterlockedwithsignalsandinterfacedtothemainline(2016-17)
• BombardierCentralRiversextension.ModificationtoanexistingTie-FenLock300installation(2001)toprovideanadditionalstablingroad(2018)
FenixRailSystemsrecommendtheTie-FenLock400DCSforitscentraliseddepotcontrolfeatures,flexibility,lowoperatingcosts,legacysupportandstandardisedinterfacetoNetworkRail(NR)mainlineinterlockingsandDepotPersonnelProtectionSystems(DPPS).
2.2 Overview of BenefitsThemainbenefitsoftheTie-FenLock400systemare:
Known to be a reliable and
cost-effective solution;
Over 1,000
systems worldwide since 1984;
Lifetime 2nd line support -
UK installations since 1989 are still fully
supported for spares, technical support & O&M training;
Full vehicle detection and interlocking
provided; prevents conflicting train
movements and derailments;
Trailable, low-maintenance
point machines;
Additional functions including
Call-on and Car Counting;
Developed & compliant with EN
standards; including safety integrity
levels (SIL);
Operates in harsh environments
including coal yards, harsh winters (e.g. in
Finland & Poland);
No/reduced need for hand shunters – eliminates/reduces risk
of staff slips, trips, falls, being struck
by a train etc. as well as providing labour cost savings;
Reduced capital cost vs mainline
systems;
Minimal maintenance -
low life cycle cost;
Systems have been installed in
all types of electric traction areas and
are fully compliant with EN50121-4;
Full uninterruptable power supply (UPS) provided to mitigate powerfailures;currentlocationofvehicles
willbemaintained;
Depot can be remotely controlled from any location;
All system actions/events are recorded and saved for future access (remotely if
required);
3. Operational overview
3.1 General Operational OverviewTheTie-FenLock400systemispresentedontheVisualDisplayUnit(VDU)infrontoftheuser.Anyequipmentcontrollablebytheusercanbeclickedwiththemouseusingtheleft-clickforstandardoperationandaright-clickforfailure/administratorroles.
Asanadditionalfeature,thesoftwarecanbeconfiguredtoshowacarcount,whichisachievedbytakingtheaxlecountanddividingbythenumberofaxlespercar/carriage/coach(typically4).ThisisvisibleinFigure1,circledinblue,whichbecomesofbenefitwhenpermissiveworkingisspecifiedasitallowstheoperatortoseetheremainingstablingcapacity.
Eachinterlockingrequestalsofeaturesayes/nooptiontocompletetheoperation.Thisistopreventaccidentalrequests.Faultmessagesanddegradedmodeoperationsprovideanadditionalpop-upimageandwindowandeachmustbeacknowledgedbeforethesystemexecutesanewrequest.
Figure 1 - VDU with route set, track occupation and car count (blue circle)
3.2 Example of OperationThemostcommonlyusedfunctiononaTie-FenLock400systemissettingaroutewhichisperformedby5mouseclicks:
Clickonthesignalatthe startofthe
desiredroute,
Select“START”fromthe
drop-downlistthatappears,
Clickonthesignalatthe endofthe
desiredroute,
Select“DEST”fromthedrop-downlistthatappears,
Click YES
Amessageappears“SetrouteAtoB?”withbuttonsYESandNO.TheYES/NOareblankedoutfor3secondsbeforebecoming
availabletomitigateerroneoussetting.
Iftherouteconditionsaresatisfactory,theroutesetsandamessage“RouteAtoBset”appearsandtheVDUreflectslinesideequipmentstates.
Iftherouteconditionsarenotsatisfactory(e.g.pointslockedintheincorrectlie),theroutedoesnotsetandamessage“RouteAtoB
settingcancelled–PointsClockedreverse”.
START FINISH
Otherequipmentcanbeindicatedandcontrolledbystatusindicatorswhicharepopupboxesshowinggreenforonandredforoff,examplesincluding:
Mainline/other signalling system
interface relay sent/received status;
DPPS road protection or electrification
isolation status;
Points heating controls and
status;
Level crossing barrier or warning
sequence status.
SPAD Alert and recording
Locked Gate/Doors
Simulator (Optional)
Emergency Replacement
Indications
3.3 Background OperationsThesystemautomaticallyrecordseachactiontakenonthesystemintoanactivitylog.Eachlogentryincludesthedate,time,locationandoperator.Someitemsmayinclude(non-exhaustive):
Failure of wayside
equipment;
The successful setting a route or interlocking
request;
The unsuccessful setting of a route
or interlocking request; and
A change in interface relay or other equipment
state.
3.4 Multiple VDUsThereisflexibilityinhavingmultipleoperator’sdesks(i.e.twoseparateVDUsinseparatelocations).Thesameconnectionappliesandisviaasecureandreliablenetwork(ethernet)cable.ThemultipleVDUsetupisconfiguredinsuchawaythatitispossibleforonlyoneoftheterminalstobedesignatedthemasteratanyonetime.Asecurefunctionisbuiltintotheuserinterfacetoenablethehand-overofcontrolandusesamultipleactioncommandtopermitthecurrentlyactivemastertodesignateanotherterminalasthenewmaster.
ThelogcanbedownloadedfromtheinterlockingorviewedontheVDUandisgenerallyanaidtofaultfindingexercises.
4. System overview
4.1 System CharacteristicsThissectiondescribes,inbrief,thepurposeofeachsectionoftheTie-FenLock400system
OverFTNorleasedcommunication link
OverFTNorleasedcommunication link
OverFTNorleasedcommunicationlink
MainLineSignalling System-Modificationsonly(BR930StyleFreewired
Interlocking)
Mainline Electrical ControlRoom
Modem Modem
SPTs TOCControl
Train Describer
I/PandO/P
tofromInterlocking
MainlineControlCentreSignaller’sWorkstation
I/PandO/P
tofromRelayCards
Tie-fen-Lock400DepotControlSystem
Interface(RepeatRelay)
Location
PhonetoMainline ECO
PhonetoMainline Signaller
DPPS DPPSInterface
WaysideEquipment(Signals,Points,AxleCounters,EmergencyStop)
ConstantDataLogging
Red = Scope of OthersBlue = Scope of SignallingGreen = Scope of Telecoms
Tie-FenlockVDU
Slot Panel
Figure 2 - System block diagram of a typical Tie-FenLock 400 depot installation
ThemainfunctionoftheDepotControlSystemistoprovideasignallinginterlocking.Theinterlockingisdesignedtopreventconflictingtrainmovementsandtoprovideasafestateintheeventofafailure.TheVDUisthehuman-machineinterface(HMI)fromwhichtheoperatorcanmakeinterlockingrequests.Thisrequest(routesettingetc.)willgothroughtheinterlocking,whichanalysesthestatusofthewaysideequipment(tracksections,pointmachines,othersetroutesetc.)andapproves/rejectstherequest.Iftherequestisapproved,theroutestateandwaysideequipmentstatechangestoallowonetrainmovement.
Thephilosophyofacentralisedcontrolisachievedbyprovidingallcontrolsavailabletotheoperatorwithinonelocation.UsingFigure2asatypicalinstallation,the“DepotSignaller’sControlDesk”isthelocationofallsignallingandcommunicationsdevicesavailabletotheoperator.Thisincludesallsignallingcontrols,CCTVcontrolsandscreens,telephonestoSPTs/TOCs/mainlineentities(asrequired)andanydegradedoperationcontrols(suchaspointkeysandhandles).
Themainlinefunctionalinterfaceisbecomingamoreprevalentfeatureofdepotdesignsfollowingtheintroductionofthefollowingdocuments:
•NetworkRailstandardNR/L2/SIG/30009/C320-InterfacebetweenRunningLinesandSidingsorDepots,compliancedate1stDecember2018
•RSSBGuidanceNoteGIGN7621-GuidanceNotefortheDevelopmentandDesignConsiderationsofPassengerRollingStockDepots,releasedinSeptember2018
Ithasnowbeenstatedthattrainmovementsaretobelessreliantonvoicecommunicationsandtheseshouldbeavoided.Whereamainlineinterfaceisproposedasafemethodofworkingshallbeestablished.Thiscanbeachievedbycreatingspecificroutesto/fromthemainline,controllingtheseroutesusingthemainlinecontrolsystemandaslottingarrangementundercontrolofthedepotoperator.
TheTie-FenLocksystemalsoprovidesprovisionforatraindescriberforinterposedheadcodestobetransmittedtothemainlinetraindescribersystem.
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TheDPPSinterfaceallowssafemovementsoftrainsintoandoutofareaswherethereisariskofinjuryfromtrain-humaninteractionduetoincreasedhumanactivityinadepotareaorcollisionwithtrackmountedequipment,suchasinamaintenanceshedorwheellathe.Aslottingarrangement,controlledbytheDPPSoperator,canalloworblockmovementsintooroutoftheareadependentontheconditionswithintheDPPSarea.Thisinterfacecanbemadetoworkautomaticallyintheeventthatnostaffarepresent.
TheTie-FenLocksystemishighlyscalable.Itiscapableofprovidingcontrolandindicationfordepotsofsignificantcomplexity.Thisisduetothemodularinterlockingandwaysidearchitectureenablingtheoverallsystemtobeseparatedintomultiplesubstations.Logicaldivisionoftheinterlockingisrecommendedforinstallationswithover60itemsofsignallingequipment.Equipmentcountshigherthanthisarepossiblebut,dependinguponthedepotlayout,thiscouldbetothedetrimentofsystemprocessingspeed.
ThelargestTie-FenLockinstallationislocatedatGdanskdepot,Poland.Thedepotconsistsof4substationswhichcontrol100pointmachines,180axlecounterheadsand150signals.Eachofthesesubstationscommunicates(bi-directionally)withthemaininterlockingprocessor.
AllTie-FenLocksystemsarecompatiblewithrelevantEUEMCstandardstoalltractiontypes.Outdoorequipmenthasatemperatureoperatingwindowofatleast-25°Cto+45°C.Theaxlecounterscanbesafelytraversedatspeedsofupto60kph(~37mph)althoughatypicaldepotspeedlimitisusuallylessthan15mph.
4.2 System Architecture4.2.1 Computer Based InterlockingThisisthe“heartandbrain”oftheTie-FenLock400system.TheCentralControlUnit(CCU)isaSIL-2systemandisbatterybufferedbyanuninterruptablepowersupply(UPS)topreventpowerloss.Intheeventofatotalpowerloss/UPSfailuretheinternalmemoryisnotlost.TheCCUcollectsanddistributesdatatoallwaysideequipmentandfeedstheinformationtotheCentralProcessingUnit(CPU).TheCPUcontainstheinterlockingdata,whichisbespoketoeachinstallation.Theinterlockingdatacanbewrittentoadapttoandabidebyanycountry’ssignallingprincipleswithnolimitationswhichmayincludepermissiveworkingorlongroutesetting(non-exhaustive).
Theoperator’sVDUisconnectedtotheCPU,whichtakestheoperator’sinputsontheVDUandchecksagainsttheCCUinterlockingdatabeforegrantingorblockingtheactionrequestedbytheoperator.
Allequipmentisfedfromandreportstoan“interfacecard”whichismountedwithinthelocationcabinet/REB(seesection4.2.2).EachcardcommunicateswithothercardsandtheCCU.
Figure 3 - Interlocking cards (Wembley Depot, UK)
TheCCUislargelymaintenancefree,withnoscheduledupgradesunlessrequiredbydepotexpansion.Thesystemperformsself-diagnosticroutineswhichflagsuntowardoccurrencesandfailures.UpgradestothesoftwarecanbeimplementedbyinstallinganewCPU,whichallowsforeasyinstallationofnewroads,signalsandpointsetc.
Thesystemboastsamodulardesignphilosophywhichiscreatedfromhighgradeindustrialcomponents,thusincreasingtheavailabilityofsparepartsandreducingmaintenancecosts.Thesystemisconstantlyperformingself-checksonthecircuitsandreportingfaults,whichmeansthatmalfunctioningunitscanbeswappedveryquicklyandeasily.Themetalplatesonthefront(seefigure1)canbetakenoff,exposingthecardbeneath.Thiscardhasapartnumberandpin-code,meaningonlyacardofthattypecanreplacetheoriginal.
4.2.2 Equipment Housing4.2.2.1 OverviewTheTie-FenLock400systemisinstalledinlocationcabinets,preferablyininternalhousingsuchasacontrolroomorREBforeaseofmaintenancebutcanalsobeexternallylocated.UnliketypicalNRlocationcabinets,thesearemountedonaswingingframeandthereforeprovidesaccessfromoneside.Theframeismadeupoftwocolumnsofeight19”racks(althoughtypicallyonlyamaximumof7areusedtoallowcableinstallationandaccessinthebaseofthelocation),onwhichthecardstocontrolandprocesswaysideinformationismounted,aswellastheCCUandCPU.
Eachlocationcabinetcanholdamaximumof:
98 relaycards;
98signalcards;
56 axlecounterresetcardsor168axlecountingcards;
28pointmachine
cards.
Anadditionalexternalcabinetcanbeprovidedforterminatinganddistributingtheincomingpowersupply.ThiscabinetissmallerthanthecabinetsdepictedinFigures3and4.TheUPScanalsobelocatedforelectricalconveniencewithinthiscabinet.TheUPSistypicallyspecifiedforaxlecountingback-uppurposesandnotforsignalandpointspower,butitcanbespecifiedforanypurpose,voltageortimeperiodtosuitspecificprojectrequirements.
Figure 4 - Design drawing of two 19” racks, controlling 4 point machines
4.2.2.2 ExternalTheexternalcabinetsaremountedonastainless-steelbase,whichisdirectlyburiedintotheground.Thebaseallowsforcableentryandexitandfeaturesremovablepanelstoallowaccessformaintenanceandtoprovideprotectiontothecablesenteringthebaseofthecabinet.Cablesareattacheddirectlytothebottomofthecabinetbysuitablyratedcableglandsandarmourcanbeearthed.
Figure 5 – External location cabinet (frame closed) Figure 6 – External location cabinet (frame open)
4.2.2.3 InternalTheracksandframesarealsocompatiblewithindoorapplication,whereaglassfrontedcabinetcanbemountedtothefloororwallwithinadesignatedbuilding,orwithinarelocatableequipmentbuilding(REB).Thisisbeneficialasacentralisedsystemofferseasiermaintenance(accesstoallofthesysteminonelocation,protectedfromweather,reducedcostofexteriorcabinets,concretebasesetc.)
Figure 7 - Wall mounted internal location cabinet (undergoing factory testing)
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4.2.3 VDUThepurposeoftheVDUistobetheHMItothedepotcontrollerenablingsafecontroloftrainmovementswithindicationoftrackandwaysidesystemstatus.TheinformationdisplayedandcoloursontheVDUcanbecustomisedtotheclient’srequirements,althoughtypicallythecoloursaretoNRstandards.
Figure 8 - VDU at Cologne Depot, Germany Figure 9 - VDU at Banbury Depot, UK (NR slot panel to left)
Dependingonthesizeofthedepot,oneormultipleLCD(beingSDorHD)monitorsareprovidedalongwithacompactdesktopcomputer,mouseandkeyboard.Allothersignallingandtelecommunicationsequipment(e.g.slotpanel,traindescriber,emergencyalarmsandtelephones)shouldbemountedlocallytotheVDU,inordertoachievecentralisedcontrolforallmovements.
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Thesignalsaredirectlyfedfromtheinterlocking,asthecableisattachedtoasignalcardwithinthelocationcabinet.
Thesignalsareeffectivelymaintenancefreeandonlyrequireinspectionandcosmeticmaintenanceifnecessary.Typically,signalsarefedat110Vac.However,theTie-FenLocksystemcanaccommodateanysignaltypeorindicatorwithareasonablevoltagerequirement.Themaximumfeedlengthfora2.5mm2cableisover10km.
4.2.4 SignalsTheTie-FenLock400DCStypicallyusesNetworkRailapprovedLEDPositionLightshuntsignals,showingred/redfordanger,clearingtowhite/whiteat45°forproceed,althoughthesystemcaninterfacetomostLEDindicators,approvedorbespoke.
Thesearetypicallymountedneargroundlevelonaconcreteplinth.Alternatively,thesignalscanbemountedonposts;thisenablesatraintostandclosertothesignal,therebyincreasingstablingroomand capacity.
Figure 10 - Post mounted LED position light shunt signal
4.2.5 Axle CountersTheaxlecounterfortheTie-FenLock400isaSIL-4systemwhichinformstheoperatoroftrackoccupancyandprovidesvitalinterlockingfunctions.ASIL-2versionisalsoavailableforwhenSIL-4isnotrequired.
Figure 11 - Axle counter mounted on rail, and disbox (background)
Theaxlecounterheadisadualproximityswitch,designedandmanufacturedtodetecttheflangeofthewheelspassingovertheswitches.Witheachdetectedwheel,theaxlecountercountingcardsendsapackageofdatatotheswitchingamplifier,whichiswithinthelocationcabinet.
Thecableconnectingtheaxlecountertothedisconnectionboxisafixedtailcable,ofvaryinglengthsdependingonspecification.Thecablefromthelocationcasetothedisconnectionboxisusuallya2-pairtelecoms-stylecable,howeveriftwoaxlecounterheadsaremountedclosetoeachother,itispossibleforthetwoheadstosharea4-pair(upto5-pair)cable,astheaxlecounterheaddisconnectionboxallowsthis.
Theaxlecounterheadsrequirelittlemaintenance;abiannualvisualinspectionfordamageandclearancetotheheightbelowtherailhead,anannualtestand,ifnecessary,adjustmentofthedetectionmechanism.
Theaxlecounterscanbelocatedatamaximumof2200mwhenusinga1.4mm2cableunderharshEMCenvironments,orupto8,600mwhenusinga1.4mm2whenusinganearthedshieldedcable.
4.2.6 Point MachineTheTie-FenLock400systemuseslow-maintenancetrailablepointmachineswhicharerobustandmountedinthefourfoot.Themachinecanbeinstalledinapproximately80minutesandtestedandcommissionedinundertwohours,savingconsiderabletimeandcostonsitecomparedtorivalmachines.ItismountedontwocrossmemberswhichclamptotheoutsidefootoftherailandtheoverallheightofthemachineisbelowthestandardBS113railrunningheight.Asix-footmountedversionisalsoavailable,dependingonclientrequirements/sitelayoutrestrictions.
Figure 12 - Point machine installation
Thedetectionandpoweraresuppliedbyasinglecable,withaminimumof5cores.Thepowersupplyiscurrentlyathree-phase400Vacsupply,althougha120Vdcvariantisindevelopment.Themaximumcablefeedlengthis1000mwhenusinga1.4mm2cable,or500mwhenusinga0.9mm2cable.
Thepointsmachinefeaturesaninternalmechanismallowingthemachinetobesafelyusedinatrailingdirectionwithoutdamagingthecomponents.Themachinecanbeinstalledwithaplatewhichallowstheintegrationofastandardsix-footmountedbackdrive.Intheeventofapowerfailure,themachinecanbeoperatedmanuallybyinsertingakeytoengagemanualoperationandthenturningacrankhandle.Variousthrowlengthsandtimescanbespecifiedandsupplied.
Themachinerequiresminimalmaintenanceatanintervalofevery6months,whichislimitedtotheexteriorofthemachine.Thisisnormallytoaccountforvibrationandwearintheturnout.Itincludesadjustmentofthedetectionrodsandmaintenanceofthescrewthreadtopreventrusting,inadditiontore-torquingthebolts.
Whenanover-runningand/oratrailingmoveisdetected,ifsafeandincombinationwiththeaxlecountersystem,thepointsautomaticallythrowthepointstothenon-trailingpositiontopreventdamagetotheinfrastructure/train.
Themachineisdrivenbyanelectricmotorwhichisgeareddowntodrivetheswitchbladesbytworods.Therodsfeatureaspringmechanismtopreventbreakingwhenthemachineistrailed.Thedetectionisachievedbyfourmicroswitchesattachedtotwodetectionrods.
4.3 System Interfaces4.3.1 Interfaces to Other EquipmentRelaycardsareavailabletoinstallwithinthecardracks,allowingalmostanytechnologytobeinterfacedtotheinterlocking.Thismayinclude:
DPPS interfaces;
Mainline interfaces;
Manual gate
controls;
Level crossing barrier controls;
Points heating controls.
Eachrelaycardhastwosetsoftwoantivalentcontacts(onesetnormallyopen,onesetnormallyclosed)meaningthatdoublecuttingcontactsintothecircuitscanbeachieved.ForoutgoingcircuitstoNetworkRaillocationcases,aBR-spectransformerisusedtoprovideearth-freepower.
Shouldadifferenttypeofpointoperatingequipmenttosection4.2.6bespecified,therelaycardscanbeusedtogatherdetectioninformationfromthepointsoperatingequipment.
Figure 13 - Relay card rack for interface functions
26
4.3.1.1 Mainline InterlockingTheTie-FenLock400systemcanbeinterfacedtoanytypeofinterlocking(suchasbutnotexhaustive:electro-mechanical,relay,SSIorCBI)byimplementinganinterfacewithBR930-stylerelays.Therelayscanbehousedinaseparateinterfacelocationcaseamongstthemainlinesuite,withinthedepotsuiteorwithinthedepotsignallingequipmentroom.Thisarrangementcreatesavolts-freecontactbridge,meaningthesystemscanoperateindependentlyfromeachotherandmaintainimmunity.Aninterfacefunctionalspecificationshallbewrittenbeforehandtoensureallrelevantfunctionsaresentandreceivedfromeachinterlocking.Typically,aslotarrangementisrequiredtoensureasystematicandoperatorhandshakeisachieved.
EmergencyalarmsystemscanbeintegratedintotheTie-FenLock400VDUandinterface.ThesystemalsofeaturesanemergencyallsignalsoncontrolbuttonontheVDU.
Typically,atraindescriberdoesnotinterfacewiththeTie-FenLock400systemasitismoreefficientforthefringesignalboxtoperformthisaction,ortheusertointerposeheadcodesintoaseparateTDmonitor.
4.3.1.2 Depot Personnel Protection System (DPPS)Typically,aslotorotherequivalentacknowledgementisrequiredfromtheDPPSdesignatedpersonpriortoatrainmovement.ThisslotissenttotheTie-FenLock400systemandintegratedinthecontrolsoftheappropriatesignal.TheDPPSshallsendamovementauthorityslotwhenitissafeforatraintomoveintoaDPPSarea,allowingtheroutesettingandaspectclearance.Ifitisnotgiven,theroutecannotbeset.
4.3.1.3 Points HeatingAcentralisedpointsheatingsystemcanbeintegratedintothedepotsignallingsystemtoshowfaults,warningsandsystemoperationontheuser’sVDU.Thesystemcanalsobeturnedonandoffusing thebuttonsontheVDU.
4.3.2 Cable RoutingItisrecommendedtoruntwoseparateorsegregatedtroughingroutes,oneforthepointmachinecablesandsignalcables,theotherforaxlecounterandotherdatacables.Thisremovesthechanceofinterferencebetweenthecables.Ifthiscannotbeachieveditissatisfactoryifa50mmairgapismaintainedbetweenthetwocablesets.
Typically,coppercablecoresareused.However,forcablesusedfordatapurposes(fromtheinterlockingtotheVDU,axlecountersetc.)afibre-opticcablecanbespecified.
InareaswithharshEMCenvironments,earthedcablesheathingmayberequiredforlongcablerunstomaintain compliance and to mitigate voltage induction.
4.3.3 Power SupplyTheTie-FenLock400requiresa3-phase400Vacsupplytoaseparatepowercabinetorenclosurewhereitistransformeddownand/ordistributedasrequired.Theinterlockingcomponentspredominantlyrunoff12Vand24V,withtheexceptionofthesignals(110Vac)andpointmachines(400Vac).
A30minutebackuppowersupplyisgenerallyprovidedfortheaxlecounterlogiccomputer,toallowforaxlecountandtrainpositionmemory,allowingaquickerrecoverytime/reducingdowntime.
5. Further information and reading
TheTie-FenLock400isthemostadvancedofthefourTie-FenLockDCSoptionsandthereforemaynotbesuitableforalldepotapplications.Furtherinformationcanbefoundforthe100,200and300seriesinthefollowingdocuments:
FS-DES-STD-001–Tie-FenLock100DepotControlSystem–SystemOverview
FS-DES-STD-002–Tie-FenLock200DepotControlSystem–SystemOverview
FS-DES-STD-003–Tie-FenLock300DepotControlSystem–SystemOverview
FS-DES-STD-005–Tie-FenLockPointsHeatingSystem–SystemOverview
FS-DES-STD-006–Tie-FenLockPointsMonitoringSystem–SystemOverview
FenixRailSystemsprovidesignallingsystemconsultancyandturnkeydelivery(design,procurement,installation,testing,commissioning,handoverandO&M)intheUKandworldwideforbothgreenfieldprojectsandbrownfieldprojectsrequiringcomplicatedstageworks.ProjectdeliveryintheUKisalignedwithNetworkRailGRIPstages2-8.
Ourofficesareopenfrom08.30 to 17.30eachday.Keymanagementcanbecontactedviatheofficelandline 03300 580180 andmobilenumbersareprovidedforconvenienceoutsideofficehours.YourmaincontactwithFenixRailSystemsareasfollows:
Craig Purcell
18ShotteryBrookOfficePark Timothy’sBridgeRoad StratforduponAvon CV37 9NR
www.fenixrailsystems.com
Tailored and innovativesignalling solutions
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