Description
Product Description
The GE DS200ADGIH1AAA is an Analog Input/Output (I/O) Terminal Board designed as a critical interface component for GE’s Mark Vle or Mark VIe gas/steam turbine control systems, part of the broader GE Speedtronic family. This board, the GE DS200ADGIH1AAA, serves as the physical connection point between the turbine controller’s internal logic and a wide array of field devices by providing termination for analog input signals (like temperature, pressure transmitters) and analog output commands (to positioners, actuators). It acts as a signal conditioning and distribution hub, ensuring sensor readings are properly routed to the controller’s analog input modules and that control commands reach the final elements reliably. The design of the GE DS200ADGIH1AAA emphasizes robustness and precision, which are essential for the high-speed, critical control loops in turbine management. Integrating the correct terminal board is fundamental to the system’s signal integrity.
Product Parameters
The GE DS200ADGIH1AAA terminal board is characterized by its specific interface functions:
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Board Type: Analog I/O Terminal Board (often referred to as a “daughterboard” or “termination board”).
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Compatible Controller: Designed for use with specific GE Mark Vle or Mark VIe turbine control system racks and associated analog I/O modules (e.g., paired with a DS200ADIO, DS200AIOG, or similar analog card).
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Termination Points: Provides a high density of screw terminal or spring-clamp connections for field wiring. These are grouped for analog inputs (AI), analog outputs (AO), and likely includes terminals for loop power and common reference signals.
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Signal Conditioning: Includes necessary passive components (resistors, filters) for basic signal conditioning, such as current-to-voltage conversion or scaling.
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Connectors: Features one or more high-density, multi-pin connectors that mate directly with the corresponding analog I/O module in the rack, creating a secure and organized interface.
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Board Identification: The model number, DS200ADGIH1AAA, is typically silkscreened on the PCB for identification.
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Mounting: Installs directly onto or adjacent to its parent analog I/O module within the turbine control rack assembly.
Advantages and Features
The GE DS200ADGIH1AAA offers key advantages for turbine control system integrity:
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Organized and Secure Field Wiring: This terminal board provides a dedicated, labeled interface for all field connections related to analog signals, dramatically simplifying wiring, reducing errors, and improving maintenance access compared to wiring directly to a module.
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Enhanced System Protection: By providing a physical buffer between the sensitive control electronics and the field wiring, the GE DS200ADGIH1AAA helps protect the more expensive I/O modules from accidental voltage spikes, mis-wiring, and environmental contaminants.
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Improved Signal Integrity: The onboard conditioning and short, controlled signal paths from the terminal to the module connector minimize noise pickup and ensure accurate signal transmission.
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Maintenance Efficiency: The modular design allows for easier troubleshooting and replacement. A damaged terminal board can be swapped independently of the more complex and costly analog I/O module.
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System-Specific Design: The DS200ADGIH1AAA is engineered to match the electrical and mechanical requirements of its specific GE Speedtronic system generation, ensuring perfect compatibility and performance.
Application Cases in Industry
This terminal board is exclusively applied in heavy-duty industrial power generation:
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Gas Turbine Power Plants: Used in GE Frame 5, 6, 7, or 9 gas turbine control systems to terminate wiring for fuel gas pressure transmitters, exhaust thermocouples, inlet guide vane position feedback, and actuator command signals.
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Steam Turbine Control: Applied in combined-cycle or traditional steam plants to interface with steam chest pressure sensors, bearing temperature RTDs, and governor valve positioners.
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Mechanical Drive Turbines: Used in compressor or pump drive applications in oil & gas facilities, where the turbine control system requires interfacing with process variable sensors and anti-surge control outputs.
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Aeroderivative Gas Turbines: Employed in control systems for mobile or offshore power generation packages, where reliable signal termination is critical in compact, high-vibration environments.
Comparisons with Competing Products
When compared to universal terminal blocks or generic interface boards, the GE DS200ADGIH1AAA provides significant system-specific benefits:
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Guaranteed Compatibility and Fit: Unlike a generic terminal strip, the GE DS200ADGIH1AAA is designed with the exact connector, pinout, and mounting required by the GE I/O module, eliminating guesswork and connection errors.
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Preserved System Certification: Using the genuine OEM terminal board ensures the entire control loop maintains its original design integrity and certifications for functional safety and performance.
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Integrated Design Philosophy: It is part of a fully engineered signal chain from sensor to logic solver. Third-party substitutes may not replicate the built-in filtering or grounding schemes, potentially compromising signal quality.
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Lifecycle Support: As an official GE part, its documentation, wiring diagrams, and replacement are supported by GE’s services, which is crucial for the decades-long lifecycle of a turbine control system.
Selection Suggestions and Precautions
Selecting and handling this interface board requires careful attention:
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Verify Exact Part Number Match: The code DS200ADGIH1AAA must be matched exactly. Even a single character difference (e.g., DS200ADGIH1AAB) indicates a different revision or variant that may not be physically or electrically compatible.
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Identify the Parent Module: Determine the specific analog I/O module (e.g., DS200ADIOH1AAA) this terminal board is designed to pair with. They are not interchangeable across different module types.
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Inspect Connector Condition: Before installation, carefully inspect the board’s multi-pin connector for bent or damaged pins. Mating a damaged connector can destroy the more valuable analog I/O module.
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Follow Torque Specifications: When terminating field wires, adhere to the specified screw torque values to ensure a gas-tight connection without damaging the terminal block.
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Static Discharge Prevention: Handle the GE DS200ADGIH1AAA as a static-sensitive device. Use an ESD wrist strap and work on an ESD-protected surface to prevent damage to onboard components.
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