GE IS220UCSAH1AK Embedded Processor Module
Mark VIe UCSA High-Performance Controller | 667MHz Freescale 8349 | QNX RTOS | Dual Gigabit Ethernet | IONet/Modbus TCP
1. Core Product Overview
The GE IS220UCSAH1AK is a high-performance embedded processor module (UCSA platform variant) for Mark VIe/VIeS Speedtronic turbine control systems, engineered to execute complex control logic, process real-time I/O data, and manage network communications in power generation, oil & gas, and petrochemical applications. It features a **667MHz Freescale PowerQUICC III (MPC8349) processor**, QNX Neutrino RTOS for deterministic control (<1ms response), 256MB DDR2 ECC SDRAM, and 1GB NAND flash for non-volatile storage. The module integrates dual Gigabit Ethernet ports (IONet/Modbus TCP/PROFINET RT), RS-232/RS-485 serial interfaces, and Mark VIe backplane compatibility for seamless I/O pack integration (PUAA/PAICH/PSCA). Designed for **18-36 VDC redundant power (12W)**, fanless cooling, and -20°C~+60°C industrial operation, it meets Class I, Div 2/ATEX Zone 2 hazardous area ratings, with IP20 protection and conformal coating for harsh environments. The “K” suffix denotes a factory-configured variant with enhanced ECC memory and preloaded control logic for critical turbine loops (overspeed protection, fuel regulation).
• Core Role: Mark VIe embedded control; real-time logic execution; IONet data exchange; field device integration; TMR/dual/simplex redundancy
• Model Info: IS220UCSAH1AK (full PN); UCSA high-performance processor; Mark VIe Speedtronic; Freescale 8349; QNX RTOS; GEH-6725 manual
• Key Specs: 667MHz PowerQUICC III; 256MB ECC DDR2; 1GB NAND flash; dual Gigabit Ethernet; 18-36 VDC; -20°C~+60°C
• Reliability: ECC memory; fanless design; redundant power; fault isolation; Class I, Div 2/ATEX Zone 2; 24-month GE warranty
2. Processing, Memory & RTOS Performance
The IS220UCSAH1AK’s **Freescale MPC8349 processor** delivers parallel processing for control logic and data acquisition, while QNX Neutrino RTOS ensures deterministic execution for critical turbine control loops. Its 256MB DDR2 ECC SDRAM corrects memory errors, and 1GB NAND flash stores firmware, control programs, and fault logs—retaining data during power loss. The module supports **hot-swap** and **TMR/dual/simplex redundancy** (50ms failover), with firmware enabling fault isolation between channels to prevent single-point failures from disrupting system operation. The “K” variant’s preloaded control logic optimizes ECC memory utilization and reduces boot time, while ECC error correction minimizes data corruption in high-vibration industrial settings.
• Processing: 667MHz PowerQUICC III; QNX RTOS deterministic control;<1ms critical loop response; parallel I/O processing
• Memory: 256MB ECC DDR2 (error correction); 1GB NAND flash (non-volatile); firmware/control logic storage; power-loss data retention
• Redundancy: TMR/dual/simplex support; 50ms failover; hot-swap maintenance; fault isolation; redundant power/network
• Configuration: ControlST/ToolboxST setup; ECC memory monitoring; flash backup/restore; redundancy parameter tuning
3. Communication & Mark VIe Ecosystem
The IS220UCSAH1AK is a Mark VIe backplane-compatible processor, integrating dual Gigabit Ethernet ports for **IONet real-time data** and **Modbus TCP/PROFINET RT** communication with ESWB/ESWA switches. It supports RS-232 (debug) and RS-485 (Modbus RTU) serial interfaces for legacy device integration, while front-panel LEDs provide real-time status of power, communication, and fault conditions. The module works seamlessly with Mark VIe I/O packs (PUAA universal I/O, PAICH analog I/O, PSCA serial I/O), enabling high-precision measurement and control of thermocouples, RTDs, voltage/current signals, and discrete devices. Its “K” variant factory configuration includes pre-tuned IONet parameters and Modbus register mapping, reducing on-site setup time and ensuring compatibility with existing Mark VIe deployments.
• Ethernet: 2×Gigabit (IONet/Modbus TCP/PROFINET RT); redundant network support; Cat5e/Cat6 cabling (100m max)
• Serial: RS-232 (console/debug); RS-485 (Modbus RTU); baud rate 9.6kbps–115.2kbps; hardware flow control
• Mark VIe I/O: PUAA/PAICH/PSCA compatibility; backplane data transfer; IONet frame sync; ControlST configuration
• Status Monitoring: LED indicators (power/activity/fault); ToolboxST remote diagnostics; ECC error logging; fault isolation alerts
4. Safety, Compliance & Applications
The IS220UCSAH1AK is certified for **Class I, Div 2 (Groups A-D) and ATEX Zone 2** hazardous locations, with low-power design to prevent ignition in explosive atmospheres. It meets IEC 61010-1 electrical safety, IEC 61000-4 EMC immunity, and RoHS compliance, with IP20 protection, conformal coating, and -20°C~+60°C operation to withstand dust, vibration, and extreme temperatures. The fanless, convection-cooled design (no moving parts) improves MTBF, while redundant 18-36 VDC power inputs ensure uninterrupted operation during outages. Typical applications include gas/steam turbine control, combined cycle power plants, oil & gas compressors, and chemical processing—where embedded processing, real-time IONet integration, and hazardous area compliance are critical.
• Hazardous Ratings: Class I, Div 2 (Groups A-D); ATEX Zone 2; UL 913/IEC 60079-11; low-energy design
• Environmental: -20°C~+60°C operating temp; 5-95% non-condensing humidity; IP20; conformal coating; fanless cooling
• Compliance: CE/UL/RoHS; IEC 61010-1/61000-4; fault isolation; ESD protection; surge suppression
• Key Sectors: Power generation (turbines); oil & gas; petrochemical; chemical processing; turbine OEMs
5. Installation, Configuration & Maintenance
Installation: Mark VIe backplane mounting; dual 18-36 VDC power connection; Ethernet port assignment (IONet/Modbus); serial (RS-232/RS-485) wiring; ToolboxST initial setup.
Configuration: TMR/dual/simplex redundancy setup; IONet/PROFINET parameter tuning; ECC memory enable; serial Modbus mapping; LED status verification via ControlST.
Maintenance: Fanless design (no mechanical maintenance); LED fault check; remote diagnostics via ToolboxST; ECC error monitoring; 6-month preventive inspection (cabling/connections).
Quality Assurance: GE genuine module; factory “K” variant configuration; preloaded control logic; 24-month warranty; technical support for integration/redundancy.
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Technical Documentation | GE IS220UCSAH1AK | UCSA Embedded Processor for Mark VIe Speedtronic Turbine Control
