Webfil digital _ fail safe multiplexer __ bpac for double line
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This document provides an overview of a Block Proving by Axle Counter (BPAC) system for double line block working using Universal Fail Safe Block Interface (UFSBI). The BPAC is designed to replace traditional double line block instruments and provide fail safe operation through triple redundant hardware and a 2/3 decision logic. It meets relevant safety standards and specifications. The BPAC incorporates automatic features to streamline operations and utilizes optical and galvanic isolation on inputs/outputs to eliminate noise and faults.
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Webfil digital _ fail safe multiplexer __ bpac for double line
- 1. 7/6/2015 WelcometoWEBFIL:Digital::FailSafeMultiplexer::BPACforDoubleLine data:text/html;charset=utf8,%3Ctable%20border%3D%220%22%20cellpadding%3D%220%22%20cellspacing%3D%220%22%20width%3D%22610%22… 1/3 BPACFORDOUBLELINEUSINGUFSBI Introduction Block Proving by Axle Counter is a system used for controlling the coordinated movement of the train in the block section working on absoluteblockworkingprinciple.Thesystemhasbeendevelopedasper RDSO/SPN/188/2004 Ver.1 for double line block working, replacing the traditionaldoublelineblockinstruments. HIGHLIGHTSOFBPACFORDOUBLELINEUSINGUFSBI(WEBFILMAKE): Designedforfailsafeoperation. Tripleredundanthardwareatalllevelswith2/3decisionlogicensureshighdegreeofsafetyaswellas availability. SystemmeetsCENELEC&ORE155guidelinesforsafetyandreliability. SystemmeetsRDSOspecificationno.RDSO/SPN/188/2004Ver.1 Simple,modularandruggeddesign. Highperformance16bitMicrocontrollerusedforbettersoftwaremanagement. CMOS/FETactivecomponentstoensurelowpowerconsumptionandbetterreliability. Hirelcomponents,relaysandconnectorsusedtoensurehighMTBF. Allinputoutputconnectionsareopticallyand/orgalvanicallyisolatedtoeliminategroundnoiseand earthfaults. Ruggedcommunicationprotocolfortransmissionoferrorfreedata. Dualpowersupplyinhotstandbymodeincreasessystemavailability. 16digitdotmatrixalphanumericdisplayforuserfriendlymanmachineinterface. EnvironmentspecificationmeetsIS9000. SYSTEMOVERVIEW: TheBlockProvingbyAxleCounterisdesignedtoreplaceexistingblockinstruments,usedinrailway signalingsystem.ItisasubsystemofBlockProvingsystemanditworkswithothersubsystemsmentioned below: UniversalFailSafeBlockInterface BlockPanel SinglesectionDigitalAxleCounter BlockTelephone QuadCableorVoicechannelonOFC BatterySet BatteryCharger/IPSmodule Relayrackwithrelays
- 2. 7/6/2015 WelcometoWEBFIL:Digital::FailSafeMultiplexer::BPACforDoubleLine data:text/html;charset=utf8,%3Ctable%20border%3D%220%22%20cellpadding%3D%220%22%20cellspacing%3D%220%22%20width%3D%22610%22… 2/3 SALIENTFEATURES: TheBPACisof2outof3hardwarearchitecturewithimplementationsofthefailsafetyprinciples.Itcomplies withtheCENELECstandardsandconformingtoSafetyIntegrityLevel4(SIL4). Thesystemincorporatesautofeaturesandeliminatesmanualcooperationsfromotherendfor LineClearoperation. Emergencycancellationatthereceivingstation. AutomaticTrainOnLine. AutomaticLineCloseaftersequenceprovedatreceivingend. SimplifiedBlockBack/BlockForwardOperations. CooperativeCancellation. LineClearBlockingKey(LCBKey)topreventautomaticgrantingofLineClear. StationMasterKey(SMKey)topreventunauthorizedpaneloperations. Dataloggerconnectivity. Communicationmedia:(1paircableinquadoronvoicechannelinOFC.) BlockbellandtelephoneonseparatepairofquadorvoicechannelofOFC. TECHNICALSPECIFICATION SYSTEMSPECIFICATION MeetsRDSOSPN147/2005 SYSTEMCONFIGURATION Tripleredundancyatalllevelsincludingprocessor CENTRALPROCESSOR HightPerformance16bitIntel80C196KCMicrocontroller SAFETYCOMPLIANCE Hardware : CENELECEN50129 ORE155.A RSDOSPN144&SPN147/2005 Software : CENELECEN50128 I/OMODULES InputModule 16changeoverinput,Optoisolatedwithtransientsuppressor OutputModule 16QseriesRelayoutputwith8F/8Bcontacts Transientprotected Shortcircuitprotected Note:OutputmoduleneedsanInputmoduleforgettingfeedbackfromtheexternalsignalingrelaydriven bythesystem. COMMUNICATION FSK,V.23 1200Baud 1302/2097Hz
- 3. 7/6/2015 WelcometoWEBFIL:Digital::FailSafeMultiplexer::BPACforDoubleLine data:text/html;charset=utf8,%3Ctable%20border%3D%220%22%20cellpadding%3D%220%22%20cellspacing%3D%220%22%20width%3D%22610%22… 3/3 4QAMV.22.bis 2400Baud(notused) Sendlevel 8dBmnominal ReceiveLevel 12dBmnominal S/NRatio betterthan20dBforBER106 POWERSUPPLY Configuration Hotstandby Input 24VDCnominal 21.6VDCto28.8VDC Output +5.8VDc,+0.3V,1.5AMPS(Int) +12.8VDc,+0.5V,4AMPS(Int) Consumption 20Watts(nominal)forbasicsystem (excludingtheactivationdriveofexternalsignalingrelays) Protection Input:Surgeandtransients,Overvoltagealarm,Overvoltage shutdown,Undervoltagealarm,Undervoltageshutdown Output:Overvoltageandshortcircuit Efficiency >70%atoptimumload ENVIORNMENT QM333CatagoryB2 Temparature AsperRDSO/SPN/147/2005 Humidity AsperRDSO/SPN/147/2005 MECHANICAL SubrackofUBX2000is19"wide,6Uhigh ClosedRack(standard)is600mmwide,32Uhigh