- Model: IS220UCSAH1A-C
- Manufacturer: GE
- Core Function: Acts as a standalone embedded controller and processor module executing deterministic control logic, coordinating distributed I/O packs via IONet, and supporting specialized functions including acoustic monitoring in turbine control applications.
- System Compatibility: Compatible with GE Mark VIe and Mark VIeS distributed control systems, including Speedtronic turbine platforms.
- Supply Status: Available as new surplus, refurbished, or repair/exchange; Revision C variant supported for legacy and ongoing installations.
- Warranty Standard: 12-month functional warranty, fully tested.
Key Technical Specifications
- Product Model: IS220UCSAH1A-C
- Manufacturer: GE
- System Platform: Mark VIe
- Power Supply Voltage: 18 V DC to 32 V DC nominal, with wide tolerance for reliable operation in varying power conditions.
- Power Consumption: Approximately 10-15 W typical, ensuring low thermal impact in control enclosures.
- Communication Interfaces: Dual 100 Mbps Ethernet ports for redundant IONet connectivity, plus additional ports for expanded networking in some configurations.
- Processor Type: Freescale PowerQUICC II Pro (8349 series equivalent), single-core at 667 MHz, delivering deterministic performance for real-time turbine control.
- Memory: 256 MB DDR SDRAM for application code execution, data handling, and diagnostic storage.
- Operating System: QNX Neutrino real-time OS, providing low-latency multitasking and high reliability in safety-critical environments.
- Operating Temperature Range: -30°C to +65°C, robust for turbine hall deployment with thermal and vibration exposure.
- Humidity Tolerance: 5% to 95% non-condensing, maintaining stability across industrial ambient conditions.
- Dimensions: Standard Mark VIe pack footprint approximately 8-10 cm wide x 4-5 cm high, for mounting in UCSA-compatible bases or enclosures.
- Weight: Approximately 0.5-1.0 kg, supporting efficient installation and field servicing.
- Mean Time Between Failures (MTBF): >100,000 hours (typical for Mark VIe controller series), contributing to high system uptime.
- Certification Standards: CE compliant, UL 508 listed for industrial control equipment, RoHS directive compliance.
Technical Architecture & Functional Positioning
The IS220UCSAH1A-C (Revision C) functions as a core embedded processor in the Mark VIe distributed architecture, positioned to execute primary application software for turbine sequencing, regulation, and protection. It integrates processing power with IONet communication to manage I/O packs and support redundant configurations (simplex, duplex, or TMR), ensuring coordinated control across the system. Revision C incorporates manufacturing and component updates for improved long-term availability while preserving full functional compatibility with earlier revisions.
The module features a PowerQUICC II Pro processor running QNX Neutrino RTOS, enabling precise timing for control cycles and rapid event response. Onboard resources handle memory management, diagnostics for processor health, communication integrity, and specialized processing such as acoustic signal analysis in applicable turbine setups. This design resolves key engineering demands: deterministic execution of protection logic to prevent overspeed or thermal excursions, noise-immune operation in high-EMI turbine environments, and modular scalability for upgrades from legacy systems.
Its architecture facilitates ToolboxST-based configuration, firmware management, and extensive fault diagnostics, supporting predictive maintenance and reduced downtime in power generation operations.
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