VP32502X ALSTOM Processor Single Board Computer

Product Overview

The VP32502X (VP32502X) is a high-performance, VME-based Single Board Computer (SBC) designed for demanding industrial control and transport automation. Powered by an Intel Pentium M architecture, this board functions as the central processing unit for ALSTOM’s modular control systems, offering a robust platform for real-time task execution. It is frequently utilized in mission-critical applications such as railway traction management, defense telemetry, and complex industrial plant control where deterministic performance is mandatory. The VP32502X provides a unique balance of high-speed processing and native support for legacy VME backplanes, ensuring a smooth transition for system modernizations without sacrificing reliability.

Technical Configuration (Deep Dive)

The VP32502X architecture is optimized for high-speed data throughput and system-level redundancy, ensuring continuous operation in harsh electrical environments.

• Processor & Memory: Equipped with a 1.6 GHz Intel Pentium M processor and up to 2 GB of DDR DRAM, providing approximately 0.5 times the performance of a standard PM862 unit while maintaining lower power dissipation.

  
  

• Redundancy Support: The board supports CPU redundancy with switch-over times of less than 10 ms, allowing for high-availability configurations (including CPU, CEX-Bus, and I/O) essential for safety-critical infrastructures.

  
  

• Storage & Expansion: Features a CompactFlash interface for non-volatile storage and an onboard BIOS Flash EPROM. Its functionality can be further expanded via PMC (PCI Mezzanine Card) modules for specialized I/O or communication requirements.

  
  

• Communication Ports: The base plate includes dual RJ45 Ethernet ports for Control Network integration and dual serial ports (COM3/COM4), one of which is isolated for secure configuration tool connection.

  
  

Technical Specifications

Technical FAQs

Q1: How does the VP32502X handle network identity in a redundant setup?

A1: Every base plate is provided with a unique Ethernet address located on the hardware label, ensuring that each CPU maintains a distinct hardware identity regardless of its position in the redundancy logic.

Q2: What should I check if the Run and Fault LEDs are both off?

A2: This typically indicates the unit is in the configuration process. If it persists, verify the hardware configuration in the controller software, check the CEX-Bus fuse, or initiate an INIT signal.

Q3: Is the VP32502X compatible with standard PMC modules?

A3: Yes, the board features PMC slots that allow for the addition of high-speed mezzanine cards to increase the board's I/O or specific protocol capabilities.

Engineering & Installation Guide

• Slide & Lock Attachment: Utilize the integrated slide and lock mechanism for DIN rail mounting. Ensure the unit is securely clicked into place to prevent intermittent backplane connections caused by vibration.

  
  

• CompactFlash Handling: Only insert or remove the CompactFlash card when the module is fully powered down. Hot-swapping the storage media can lead to filesystem corruption or hardware damage to the controller board.

• Cooling Requirements: Due to the 1.6 GHz processor clock speed, ensure that the rack's forced-air cooling system is operational. Blocked airflow can trigger thermal throttling, reducing the execution performance of the VCU.

Engineering Advantages

The ALSTOM VP32502X stands out for its high-functionality one-slot VME design, allowing for maximum performance within a minimal physical footprint. Its specialized BIOS and real-time clock are optimized for industrial synchronization, ensuring that time-stamped event logs remain accurate across distributed networks. Furthermore, the board’s RoHS compliance (on VP32502X-U variants) and rigorous testing for defense-grade applications make it a premier choice for long-term deployments in the world’s most demanding environments.