Real-Time VME-7807RC Computing Platform for GE Mark V, EX2000, and Legacy Systems
Product Overview
The GE VME-7807RC is a high-reliability 6U VME64 single-board computer(SBC)based on the PowerPC architecture(typically Motorola MPC750 or MPC7400 processor),widely deployed in industrial control,power generation,and embedded real-time systems—notably within GE’s Mark V turbine control platform,EX2000 excitation systems,and other legacy automation infrastructure.
Designed for deterministic performance in mission-critical environments,the VME-7807RC integrates a high-speed CPU,onboard memory,flash storage,serial ports,Ethernet,and a PCI Mezzanine Card(PMC)site for modular I/O expansion.Its rugged construction supports extended temperature ranges,high vibration,and electromagnetic interference(EMI)—making it suitable for turbine skids,substation controls,and remote SCADA sites.
Although now considered a legacy product,the VME-7807RC remains in active service worldwide and is often sourced for spare parts,system repairs,or life-extension projects where full migration to modern platforms(e.g.,Mark VIe)is not yet feasible.
Technical Specifications
Parameter Value
Model VME-7807RC
Manufacturer GE Intelligent Platforms(formerly GE Fanuc Embedded Systems)
Form Factor 6U VME64(233.35 mm×160 mm)
Processor Motorola PowerPC MPC750 or MPC7400(300–500 MHz,depending on revision)
L2 Cache 512 KB to 1 MB(processor-dependent)
RAM Up to 512 MB SDRAM(soldered or socketed,varies by build)
Flash Storage 8–64 MB Boot Flash;optional CompactFlash via PMC or onboard IDE
VME Bus Interface VME64,32-bit,33 MHz,A24/A32,D08/D16/D32
Onboard I/O•2×RS-232/422 serial ports
•10/100 Mbps Ethernet(via onboard controller)
•PMC expansion site(PCI-based)
•Optional SCSI or IDE interface
Operating System Support VxWorks,LynxOS,VRTX,Linux(PPC),Integrity RTOS
Operating Temperature Standard:0°C to+60°C
Extended:-40°C to+70°C(conformal-coated versions)
Power Consumption~15–25 W(depends on CPU speed and I/O load)
Compliance Conforms to IEEE 1101.1/10,ANSI/VITA 1.1
Note:Exact specs vary by suffix(e.g.,VME-7807RC-500=500 MHz).Always verify processor speed,memory,and I/O configuration from label or BIOS.
Key Features&Advantages
✅Real-Time Determinism
Optimized for hard real-time control tasks with low interrupt latency—ideal for turbine sequencing,protection logic,and closed-loop regulation in Mark V systems.
✅PMC Expansion Flexibility
The onboard PCI Mezzanine Card(PMC)site allows integration of specialized I/O such as analog acquisition,digital I/O,MIL-STD-1553,or GPS timing modules.
✅Long-Term Availability&Support
Despite being legacy,GE and third-party suppliers maintain spares,repair services,and compatibility documentation—critical for asset owners extending system life.
✅Ruggedized for Industrial Use
Available with conformal coating,extended temperature support,and enhanced shock/vibration tolerance for deployment in turbine enclosures or offshore platforms.
✅Seamless Integration with GE Ecosystem
Used as the primary controller CPU in Mark V TMR racks,EX2000 AVR systems,and custom GE industrial solutions—ensuring software and firmware compatibility.
Typical Applications
GE Mark V Turbine Control Systems–Primary or backup controller in gas/steam turbines
EX2000 Excitation Systems–Real-time AVR(Automatic Voltage Regulator)processing
Substation Automation&Protection Relays–Legacy SCADA front-end processors
Industrial Process Control–Batch control,motor management,safety interlocks
Defense&Aerospace Test Systems–Embedded simulation and data acquisition
Retrofit&Migration Projects–Temporary bridge during transition to Mark VIe or other platforms
Related Products
VME-7750:Earlier PowerPC VME board(MPC750,lower performance)
VME-7808RC:Successor with faster MPC7455/7457 processors
VMIPMC-400:Common PMC module used with VME-7807RC for I/O
Mark V I/O Cards:e.g.,DS200,DS3800 series(interface via VME backplane)
EX2000 Controller Rack:Often includes VME-7807RC as main CPU
VRTX/VxWorks BSPs:Board Support Packages for real-time OS deployment
Installation&Maintenance
🔧Installation Tips
Ensure proper VME slot alignment and secure retention screws.
Verify jumper settings for boot device(flash vs.network vs.PMC storage).
Use shielded VME backplane cables and proper chassis grounding to reduce noise.
Monitor airflow—PowerPC CPUs can overheat in poorly ventilated cabinets.
🛠️Maintenance&Troubleshooting
Common failure points:electrolytic capacitors(aging),flash wear-out,PMC connector fatigue.
If system fails to boot,check console serial port for POST messages.
Use GE diagnostic utilities(e.g.,DOS-based flash tools)to reimage firmware.
For critical spares,store units in anti-static,climate-controlled environments.
⚠️Legacy Note:New production of VME-7807RC has ceased.Units are available via GE Repair Services,authorized surplus channels,or third-party refurbishers—often with updated components(e.g.,solid-state flash replacements).
Product Status&Support
The VME-7807RC is classified as a legacy/end-of-life(EOL)product but remains under GE’s long-term support policy for critical infrastructure.GE continues to offer:
Repair and exchange services
Firmware and driver archives
Compatibility guidance for OS and application software
For new designs,GE recommends migration to modern platforms such as CompactPCI,VPX,or Mark VIe—but for existing Mark V and EX2000 installations,the VME-7807RC remains a vital component of operational continuity.
“In legacy control systems,reliability isn’t upgraded—it’s maintained.The VME-7807RC keeps decades-old turbines running with the same precision they had on day one.”
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