GE IS215UCVEM09B
- Product Name: GE Mark VI 6U VME Main Controller Board (UCVEM)
- Product Introduction: The IS215UCVEM09B is a single-slot 6U VME64 controller card (single-board computer) serving as the primary control processor for GE’s Mark VI Speedtronic turbomachinery control system. It executes real-time turbine control logic under the QNX Neutrino real-time operating system and acts as the system “brain” bridging I/O processing, network communication, and diagnostics.
Detailed content
- Technical Specifications:
- Product Type: 6U VME64 controller card (SBC)
- Processor: Intel Celeron (published sources list 300 MHz or 650 MHz depending on hardware revision)
- Operating System: QNX Neutrino real-time, multi-tasking
- Memory: 16–128 MB Flash (configuration-dependent); 32–512 MB SDRAM (configuration-dependent)
- Communication Interfaces: 2 × 10/100 Mbps Ethernet (RJ45); 2 × RS-232C serial ports (COM1, COM2); VME backplane; optional PMC/PCI expansion site for DLAN daughterboard
- Clock Synchronization: ±100 microseconds to VCMI board via external interrupt
- Processing Capacity: Up to ~100,000 control blocks/rungs per second
- Power Supply: 5 VDC via VMEbus (typical consumption ≤15 W); additional +12 VDC and −12 VDC rails
- Operating Temperature: −30°C to +65°C (industrial grade; some published data lists −40°C to +70°C)
- Storage Temperature: −40°C to +85°C (or −55°C to +85°C depending on source)
- Dimensions: 6U VME form factor (approximately 233.4 × 160 mm)
- Certifications: CE, UL, ATEX Zone 2 (optional); SIL 2/3 per IEC 61508
- Reference Manual: GEH-6421
- Functional Features:
- Real-time turbine control and protection logic execution
- Redundant dual Ethernet ports for HMI and DCS communications with failover
- VCMI clock synchronization for multi-controller coordination
- Modular expansion via PMC/PCI mezzanine site
- Front-panel diagnostic LEDs and toolbox-based diagnostics
- Long lifecycle support (10+ years) for legacy Mark VI systems
- Application Scenarios:
- Gas turbines: startup sequencing, fuel control, speed regulation, exhaust temperature control, vibration monitoring
- Steam turbines: valve management, pressure control, extraction regulation
- Aero-derivative LM2500/LM6000 turbines in marine propulsion and offshore power generation
- Large compressors: anti-surge control, variable-speed regulation
- Combined-cycle power plants: turbine load sequencing and grid synchronization
- Material Composition: 6U VME PCB with industrial-grade components; metal faceplate with status LEDs; conformal coating option for harsh environments
- Structural Features: Single-slot VME64 board; front-panel RJ45 Ethernet ports, serial ports, and status LEDs; PMC mezzanine site for optional DLAN daughterboard
- Working Principle: Runs the Mark VI control toolbox under QNX hard-real-time OS; exchanges I/O data with VME-based I/O boards via the 64-bit VME bus; synchronizes with peer controllers through the VCMI board; communicates with HMI/DCS via dual Ethernet
- Installation Requirements:
- Insert into a single VME slot of the Mark VI control rack
- Ensure proper seating of the VME 6U connector
- For LM applications, install the DLAN daughterboard on the PMC mezzanine site
- Verify QNX-based firmware and application code compatibility with the rest of the Mark VI rack
- Usage Notes:
- Handle as an ESD-sensitive assembly
- The M09B revision is optimized for Land-Marine (LM) aero-derivative applications; other revisions (M09, M09A) serve different Mark VI configurations
- Clock sync within 100 microseconds requires proper VCMI board integration












