GE DS3800HMPK1K1K | Microprocessor Board for Speedtronic Mark IV Turbine Control
Core Processing for Gas/Steam Turbine Startup, Shutdown, and Operational Control
1. Product Overview
The GE DS3800HMPK1K1K is a microprocessor board (main control processor) engineered for GE Speedtronic Mark IV turbine control systems, delivering critical processing power for gas and steam turbine operation, protection, and monitoring. As the core of Mark IV control architecture, this board integrates a high-performance microprocessor, EPROM (firmware storage), static RAM (data caching), and backplane communication interfaces to execute real-time control logic, data acquisition, and fault diagnostics. It supports key turbine control functions including speed regulation, fuel sequencing, combustion control, and safety interlocks (overspeed, overcurrent, field loss protection). The board features 4 front-panel LEDs (3 red, 1 amber) for status indication and fault self-test, enabling quick troubleshooting of processor, memory, and communication errors. With a modular backplane-mount design, it ensures seamless integration with Mark IV I/O modules, display boards, and communication interfaces, while conformal-coated PCB enhances reliability in harsh industrial environments (vibration, temperature fluctuations, electrical noise). Compatible with GE Mark IV backplane buses and legacy turbine control infrastructure, the DS3800HMPK1K1K is ideal for retrofits, upgrades, and maintenance of utility-scale power plants, combined-cycle facilities, and industrial turbine systems requiring proven, fault-tolerant control performance.
Key Specifications
• Manufacturer: General Electric (GE)
• Model: DS3800HMPK1K1K
• Product Type: Microprocessor Board (Main Control Processor)
• System Compatibility: GE Speedtronic Mark IV Turbine Control Systems
• Core Components: High-Performance Microprocessor, EPROM (Firmware), Static RAM (Data Cache)
• Memory: 128KB EPROM (Firmware), 32KB Static RAM (Data Storage)
• Communication: Mark IV Backplane Bus, 34-Pin + 2×50-Pin Connectors for I/O/Display Interfaces
• LED Indicators: 3 Red (Fault/Status), 1 Amber (Power/Activity)
• Power Input: 5V DC (1.5A Max), 12V DC (0.8A Max) from Mark IV Power Supply
• Installation: Backplane-Mountable, 6U Standard Size, Retention Levers for Secure Connection
• Environmental Protection: Conformal-Coated PCB, Operating Temperature (-20°C to +65°C)
• Vibration Resistance: 3g RMS (10-500Hz), IEC 60068-2-6 Compliant
• Certifications: UL 796, IEC 61010-1, CE
2. Core Features
• Core Processing: Executes real-time control logic for turbine speed, fuel flow, combustion, and safety interlocks, ensuring precise and reliable operation.
• Fault Diagnostics: Built-in self-test (BIST) and LED status indicators for rapid identification of processor, memory, or communication failures.
• Memory Architecture: EPROM for firmware storage (startup/shutdown sequences, control algorithms) and static RAM for real-time data caching and parameter storage.
• Modular Connectivity: 34-pin and dual 50-pin connectors for seamless integration with Mark IV I/O modules, display drivers, and communication boards.
• Environmental Durability: Conformal-coated PCB protects against moisture, dust, and chemical corrosion; wide temperature range for harsh industrial environments.
• Legacy Compatibility: Designed for Mark IV systems, supporting retrofits and replacements in existing turbine installations without major infrastructure changes.
• Safety Interlocks: Implements critical protection functions (overspeed, overcurrent, field loss) to prevent turbine damage and ensure operator safety.
YMGK Purchase Information
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3. Typical Applications
• Gas Turbine Control: Speed regulation, fuel sequencing, combustion monitoring, and safety shutdown in utility and industrial gas turbine power plants.
• Steam Turbine Control: Steam flow management, speed control, and interlock protection in thermal power plants and combined-cycle facilities.
• Turbine Retrofits: Replacement of aging microprocessor boards in Mark IV systems to extend operational life and maintain control reliability.
• Industrial Power Generation: On-site turbine control for refineries, chemical plants, and manufacturing facilities requiring independent power supply.
• Grid Stability: Integration with turbine control systems to support grid frequency regulation and reactive power management in utility-scale applications.
4. Installation & Maintenance
Installation: Power down the Mark IV cabinet; align the board with backplane connectors and secure with retention levers. Connect 34-pin/50-pin ribbon cables to I/O modules and display boards (route cables to avoid airflow blockage). Power on and verify LED status (amber for power, red for faults); load firmware via EPROM or Mark IV diagnostic tools. Confirm communication with backplane and I/O modules using built-in diagnostics.
Maintenance: Perform monthly checks of LED status, backplane connections, and ribbon cable routing. Inspect conformal coating for damage; clean board vents with dry compressed air to prevent overheating. Use Mark IV diagnostic software to monitor processor performance, memory integrity, and communication link quality. Replace faulty boards with GE-approved spares (ensure compatibility with Mark IV hardware/software versions).
Fault Diagnosis: Retrieve fault codes via LED indicators (processor error, memory failure, communication loss) or Mark IV HMI. Check power supply voltages (5V/12V); verify backplane connections and ribbon cable integrity. Inspect EPROM for firmware corruption; reflash or replace if necessary. Test static RAM for data retention issues using diagnostic tools.
Technical Document | GE DS3800HMPK1K1K | Microprocessor Board for Mark IV Turbine Control
