GE VMIVME-7750 Replacement CPU Board for GE Fanuc Mark VI Systems

Product Overview

The GE VMIVME-7750 is a high-performance VMEbus single-board computer (SBC) designed by GE Fanuc Intelligent Platforms (formerly VMIC) for demanding industrial automation and embedded control applications. This 6U Eurocard form factor processor module serves as the central computing engine within VME-based control systems, providing complete PC/AT compatibility while operating on the robust VME64x backplane architecture. The GE VMIVME-7750 is built around an Intel Pentium III processor with a 133 MHz front-side bus, delivering up to 1.26 GHz of processing power and leveraging the Intel 815E chipset to ensure reliable, deterministic performance for real-time control tasks. The GE VMIVME-7750 excels as a slot-1 controller or as a peripheral CPU in multi-processor configurations, functioning as the "brain" within turbine control systems, process automation networks, and data acquisition platforms. Its transparent PCI-to-VME bridge technology enables seamless communication with other VME modules, making the GE VMIVME-7750 an ideal solution for extending the lifecycle of legacy systems that require modern processing capabilities without replacing the entire I/O infrastructure. The GE VMIVME-7750 combines industrial-grade reliability with the flexibility to support multiple real-time operating systems, including VxWorks, QNX, Linux, and Windows, positioning it as a versatile and trusted component in critical infrastructure worldwide.

 

Technical Specifications

Parameter Name Value
Product Model GE VMIVME-7750
Manufacturer GE Fanuc / GE Intelligent Platforms (formerly VMIC, now Abaco Systems)
Form Factor 6U VMEbus single-slot Eurocard
Product Type VMEbus Single Board Computer (SBC)
Processor Intel Pentium III PGA370, up to 1.26 GHz
Front-Side Bus 133 MHz
L2 Cache 512 KB integrated
Chipset Intel 815E
System Memory Up to 512 MB PC133 SDRAM (one 144-pin SODIMM socket)
Non-Volatile SRAM 32 KB
Graphics Controller Integrated AGP SVGA with 4 MB display cache
Network Interfaces Dual Intel 10/100Base-TX Ethernet controllers (RJ45)
Serial Ports Two 16550-compatible RS-232 ports (front panel)
USB Ports Two USB 1.1 ports
PS/2 Ports Keyboard and mouse interfaces
Storage Interface Ultra IDE; CompactFlash support via secondary IDE
PMC Expansion One IEEE P1386 PMC mezzanine slot
VMEbus Interface Universe IIB, supports A24/A32 and D16/D32 addressing
Watchdog Timer Software-programmable
Operating Temperature 0°C to +55°C (ambient)
Power Consumption 25W typical, 5.8A @ +5VDC
Dimensions 233.35 mm × 160 mm (6U standard)

 

 

Main Features and Advantages

Dual Ethernet for network segmentation and redundancy: The GE VMIVME-7750 is equipped with two independent Intel 10/100Base-TX Ethernet controllers, a key differentiator from its predecessor models. This feature allows critical real-time control traffic to be physically isolated from non-essential plant supervisory or engineering download traffic, significantly reducing the risk of unplanned process excursions caused by network broadcast storms. The dual network ports also support redundant network configurations, ensuring that the GE VMIVME-7750 maintains communication with the control system even if one network path fails.

Robust memory configuration and system stability: The GE VMIVME-7750 supports up to 512 MB of PC133 SDRAM via a single SODIMM socket, providing ample memory for complex control algorithms and data logging. Some variants feature soldered memory to eliminate boot errors and address conflicts common with older firmware revisions. The inclusion of 32 KB of non-volatile SRAM ensures critical configuration data is preserved during power cycles, while the software-programmable watchdog timer acts as a system guardian, automatically resetting the board in the event of a software lockup.

Passive thermal design for maximum reliability: The GE VMIVME-7750 employs a full passive aluminum extrusion heat sink with no moving parts, eliminating the mechanical failure points associated with active cooling fans. This design makes the GE VMIVME-7750 particularly well-suited for continuous run operation in environments with moderate vibration and ambient heat, such as turbine control cabinets and outdoor enclosures. For optimal thermal performance, the requires a minimum airflow of 450 LFM across the heatsink, which can be easily achieved with proper chassis fan placement.

Flexible I/O and expansion capabilities: The provides comprehensive peripheral support including two serial ports, USB connectivity, PS/2 keyboard and mouse ports, and an IDE interface for CompactFlash storage. The PMC expansion slot allows additional functionality to be added via standard mezzanine cards, making the adaptable to evolving application requirements.

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