Description
Product Description
The ALSTOM VIIB16-C 12011-105-00 V1.0.0 is a precisely defined version of a Vehicle Input Interface Board within Alstom’s railway control systems. This model functions as a specialized module for acquiring digital status signals from the train, such as switch positions, door contacts, or pushbutton states. The ALSTOM VIIB16-C 12011-105-00 V1.0.0 is designed to provide reliable signal conditioning, isolation, and conversion of these field inputs into digital data readable by the central vehicle computer. The version control denoted by V1.0.0 is critical, indicating a specific hardware and firmware revision that ensures compatibility with the vehicle’s network and software. Integration of this exact version, the VIIB16-C 12011-105-00 V1.0.0, is essential for maintaining the integrity of the vehicle’s diagnostic and control logic.
Product Parameters
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Manufacturer / Brand: Alstom
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Product Type: Vehicle Input Interface Board (Digital Input Module)
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Model/Function: VIIB16-C (Vehicle Input Interface Board, Type C, likely with 16 channels).
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Assembly/Part Number: 12011-105-00
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Hardware/Firmware Version: V1.0.0
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Number of Channels: Likely features 16 electrically isolated digital input channels.
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Input Type: Designed for dry contacts (volt-free contacts) or for sensing specific DC voltage levels (e.g., 24V DC, 48V DC, 110V DC) common in railway vehicle wiring.
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Isolation: Provides high galvanic isolation between each field input channel and the internal logic to protect the vehicle network from external transients and faults.
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Diagnostics: Includes per-channel status indication (e.g., via LEDs) and may provide diagnostic feedback (wire-break, short-circuit) to the vehicle control unit.
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Communication Interface: Connects to the vehicle’s data network (e.g., MVB – Multifunction Vehicle Bus) as a slave device, transmitting the state of all connected inputs.
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Power Supply: Operates from the vehicle’s low-voltage DC supply, compliant with standards like EN 50155.
Advantages and Features
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High Reliability for Safety Signals: The ALSTOM VIIB16-C 12011-105-00 V1.0.0 is engineered for dependable acquisition of critical status signals, contributing to overall vehicle safety and availability.
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Robust Electrical Isolation: Protects sensitive vehicle electronics from voltage spikes, ground loops, and noise present in the field wiring, ensuring data integrity.
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Clear Diagnostic Visibility: Local LED indicators allow maintenance technicians to quickly verify the state of each input, speeding up troubleshooting.
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Network Integration: Seamlessly integrates into the standardized vehicle communication architecture, allowing centralized monitoring and logging of all input states.
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Compact and Service-Friendly Design: The modular board format allows for easy replacement as a unit, minimizing vehicle downtime during maintenance.
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Version-Controlled Compatibility: The specified V1.0.0 ensures the module’s electrical characteristics and communication profile match exactly what the vehicle’s main software expects, preventing integration faults.
Application Cases in Key Fields
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Train Door Monitoring: Primary application is monitoring the open/closed/locked status of passenger doors, as well as the state of emergency door release handles.
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Cab and Console Inputs: Acquires the status of switches, pushbuttons, and selectors in the driver’s cab (e.g., master key, mode selection, horn button).
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Brake and Pneumatic System Feedback: Monifies the position of brake application indicators, isolation cocks, and pressure switch contacts in the brake system.
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Auxiliary System Status: Used to gather status from across the vehicle, such as fire extinguisher deployed signals, battery charger status, or external socket in-use indicators.
Comparison with Competing Products
Competing products are similar digital input modules from other rolling stock manufacturers like Siemens or Bombardier. The ALSTOM VIIB16-C 12011-105-00 V1.0.0 is distinguished by its specific electrical interface (input voltage thresholds, filtering), its physical form factor, and its pre-defined configuration for the MVB (or other) vehicle network. Generic industrial remote I/O modules (e.g., from Phoenix Contact or Beckhoff) can perform the same basic function but lack the specific environmental qualifications (EN 50155), the proprietary network communication stack, and the vehicle-specific firmware that make the VIIB16-C a direct, validated replacement within an Alstom train.
Selection Suggestions and Precautions
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Version Matching is Non-Negotiable: The V1.0.0 version is a critical part of the specification. A module with a different version (e.g., V1.1.0) may have different firmware or hardware characteristics that could cause communication errors or incorrect input interpretation. Always match the full version.
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Verify Input Voltage Compatibility: Confirm that the input sensing voltage of the VIIB16-C (e.g., 24V DC, 110V DC) matches the voltage used in the field wiring of the signals you are connecting.
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Confirm Network Configuration: The module will have a pre-set or configurable address on the vehicle network. This address must be correct for the central controller to poll its data.
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Handle with ESD Precautions: Treat the board as a sensitive electronic assembly. Use proper anti-static measures during handling and installation.
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Source from Authorized Railway Suppliers: Due to its application in safety-related signaling, procure the ALSTOM VIIB16-C 12011-105-00 V1.0.0 only through Alstom’s official railway parts channels or certified aftermarket suppliers to guarantee authenticity and traceability.
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Functional Testing is Mandatory: After installation, each input channel should be functionally tested by activating its corresponding field device (e.g., operating a switch) and verifying the correct state change is reflected in the vehicle’s diagnostic system.

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