VPI II Overview - Alstom

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General DescriptionTHIS PAGE INTENTIONALLY LEFT BLANK.P2511G, Rev. Jan/06 1–6 ALSTOM Signaling Inc.
VPI II Organization2. SECTION 2 – VPI II ORGANIZATION2.1. GENERALThis section describes the organization of the VPI II system.2.2. VPI II SUBSYSTEMSThe VPI II system can be subdivided into five main subsections as shown below:VPI IIChassisVital SubsystemNon-VitalSubsystemApplication ToolsCommunicationsProtocolsFigure 2-1. VPI II Breakdown2.3. GENERAL CHARACTERISTICSThe VPI II module is a Vital fail-safe, microprocessor-based control system designed tomeet the needs of interlocking control for mainline railroads and mass transitapplications. Designed as a modular control system, it contains a set of plug-in PrintedCircuit Boards that are applied in varying quantities to meet the needs of a specificproject. Although one VPI II system is sufficient for many installations, additionalsystems in distributed arrangements can be added for sites that are more complex(and/or have specific availability requirements). A single VPI II system may include 1 to4 chassis depending on I/O and arrangement. Single VPI II systems controllinginterlockings with 35 point machines have been proposed. However, the largest singleVPI II system installed so far has 20 points machines, and the average number of pointmachines per system tends to be less due to specific project availability requirements.The VPI II system can be mounted in a small, wayside equipment shelter. No specialheating or cooling equipment is required for operation in AREMA-specifiedenvironments of Class C or Class D (-40 to +70 degrees C). Built-in secondary transientprotection is provided for all I/O lines to prevent disruption of service from EMI or otherlocal interference. If required, additional primary protection devices can be added to theexternal lines to protect against higher level EMI such as pulses from nearby electricalstorms. Typically, no interface devices are required between the VPI II inputs andoutputs and the standard interlocking appliances.P2511G, Rev. Jan/06 2–1 ALSTOM Signaling Inc.
Page 1: VPI ® IIVital ProcessorInterlockin
Page 5 and 6: LIST OF EFFECTIVE PAGESP2511G, VPI
Page 7 and 8: PREFACENOTICE OF CONFIDENTIAL INFOR
Page 9 and 10: ABOUT THE MANUALThis manual is inte
Page 11 and 12: MANUAL SPECIAL NOTATIONSIn the ALST
Page 13 and 14: TOPICTABLE OF CONTENTSPAGE1. SECTIO
Page 15 and 16: TOPICTABLE OF CONTENTSPAGE5.4. NON-
Page 17 and 18: DESCRIPTIONLIST OF FIGURESPAGEFigur
Page 19 and 20: DESCRIPTIONLIST OF TABLESPAGETable
Page 21 and 22: General Description1. SECTION 1 - G
Page 23 and 24: General DescriptionTermEPROMFail-Sa
Page 25: General DescriptionTable 1-1. Gloss
Page 29 and 30: VPI II OrganizationControlCenterMod
Page 31 and 32: Chassis Configurations3. SECTION -3
Page 33 and 34: Chassis Configurations3.2.1. CaseTh
Page 35 and 36: Chassis Configurations3.3. DIRECT W
Page 37 and 38: Chassis ConfigurationsTable 3-2. Di
Page 39 and 40: Chassis Configurations3.4.1. CaseTh
Page 41 and 42: Vital Subsystem4. SECTION 4 - VITAL
Page 43 and 44: Vital Subsystem4.2.1. Specification
Page 49 and 50: Vital Subsystem4.5. CRG (CODE RATE
Page 51 and 52: Vital Subsystem4.6. IOB (I/O BUS IN
Page 53 and 54: Vital Subsystem4.7. DI (DIRECT INPU
Page 55 and 56: Vital Subsystem4.7.2. AssembliesTab
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Page 67 and 68: Vital Subsystem4.9. ACO (VITAL AC O
Page 69 and 70: Vital Subsystem4.10. FSVT (FIELD-SE
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Page 73 and 74: Non-Vital Subsystem5.2.1.1. Specifi
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Non-Vital Subsystem5.3.2.2. Assembl
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Non-Vital Subsystem5.3.3.1. Specifi
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Non-Vital Subsystem5.4.1.2. Specifi
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Non-Vital Subsystem5.4.2. NVO-SNK (
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Non-Vital Subsystem5.4.3. NVR (Non-
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Non-Vital Subsystem5.5. TRAIN TO WA
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Non-Vital Subsystem5.5.1.2. Assembl
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Design, Test and Validation Tools6.
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Design, Test and Validation ToolsOn
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Design, Test and Validation ToolsFi
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Design, Test and Validation ToolsRo
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Non-Vital System and Communications
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FOR QUESTIONS AND INQUIRIES, CONTAC
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VPI II Overview - Alstom

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