Description
- Product Model: IS215UCVEH2A
- Manufacturer: GE
- System Platform: Mark VI Speedtronic
- Processor Type: Intel Celeron 300 MHz (single-slot VME architecture)
- Memory: 32 MB DRAM for runtime execution and data handling
- Flash Memory: 16 MB (configurable up to 128 MB in variants) for application code and OS storage
- Operating System: QNX real-time operating system for deterministic performance
- Primary Ethernet Interface: 10BaseT/100BaseTX twisted pair, RJ-45 connector for IONet or HMI/SCADA communication
- Additional Interfaces: COM1 serial port; supports keyboard/mouse for maintenance access
- Power Requirements: +5 V DC from VME backplane, 6 A typical, 8 A maximum
- Operating Temperature Range: -30°C to +65°C, suitable for enclosed industrial cabinets
- Storage Temperature: -40°C to +85°C
- Humidity Tolerance: 5% to 95% non-condensing, with conformal coating for environmental resilience
- Mounting Type: Single-slot VME rack installation
- Dimensions (approx.): Standard VME board footprint, approximately 160 mm x 233 mm (6U height)
- Weight: Approximately 0.8-1.2 kg
- Certification Standards: CE compliant, UL recognized for industrial control equipment, meets IEEE/ANSI turbine control standards
- Mean Time Between Failures (MTBF): >100,000 hours in continuous duty turbine applications
- Programming Environment: Boolean logic via GE ToolboxST or CIMPLICITY tools
Technical Architecture & Functional Positioning
The IS215UCVEH2A serves as the computational core at the control layer in GE Mark VI Speedtronic systems, occupying a single VME slot to execute turbine-specific application code while interfacing with I/O packs, protection modules, and networked devices. It processes real-time data from sensors and actuators, runs governor, sequencer, and protective algorithms, and maintains communication over Ethernet for HMI visualization and supervisory control. This positioning ensures deterministic loop execution critical for turbine speed governing, load control, and fault response in power generation.
The module leverages a 300 MHz Intel Celeron processor under QNX RTOS, providing low-latency task scheduling and robust multitasking for complex control strategies. Key technologies include high-speed Ethernet for IONet connectivity, flash-based non-volatile storage for application persistence, and comprehensive diagnostic LEDs for health monitoring. These features address essential engineering needs: achieving sub-millisecond response in critical loops, supporting TMR redundancy for fault tolerance, and enabling online code loading without shutdown in high-availability plants.
The design emphasizes modularity, allowing simplex or triple modular redundant (TMR) setups where multiple UCVE cards synchronize via dedicated buses. This architecture facilitates scalability for large turbines or plant-wide controls, while built-in watchdog timers and self-diagnostics help isolate faults quickly to minimize unplanned downtime.
Typical Application Scenarios
- Deployed as the main controller in Mark VI-equipped gas turbines for executing startup sequencing, speed/load governing, and overspeed protection.
- Used in steam turbine applications within combined-cycle facilities, coordinating valve positioning and extraction logic for efficient operation.
- Serves as a replacement or spare in legacy Mark VI installations, preserving existing VME rack infrastructure and application configurations.
- Integrated in industrial cogeneration or compressor drive systems requiring reliable real-time control under varying loads.
- Applied during maintenance or upgrade projects, supporting firmware updates and diagnostic access to extend turbine service life.
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