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The GE DS200UDSAG1AAA is a Display/Keyboard Interface Board (often referred to as an Excitation Board) used in General Electric’s Mark V Speedtronic Turbine Control System.1
It functions as a critical processing and diagnostic component within the control loop for the turbine’s generator excitation system (like the EX2000 or EX2100).
⚡ Key Function and Role
The board’s primary role is to manage signal processing and provide local diagnostics for the excitation system, which regulates the generator’s output voltage and reactive power.2
- Signal Processing: The board is equipped with an 80196 microprocessor to execute the system’s firmware and control algorithms, ensuring the excitation process is stable and accurate.3
- Data Interface: It sends and receives control and feedback signals from other boards within the Mark V system, primarily through a 40-pin connector.4
- Operator Diagnostics: A key feature is its on-board diagnostic display capability, which provides immediate, local feedback on the system’s status:5
- Displays: It contains up to 21 4-character displays for alphanumeric status codes.6
- LEDs: It includes up to 32 LEDs for quick visual indication of the board’s operational state and fault conditions.7
⚙️ Part Number Breakdown
The full part number, $\text{DS200UDSAG1AAA}$, follows the standard GE convention and indicates its revision level:
- DS200: Identifies the product as part of the Mark V Speedtronic Turbine Control System series.8
- UDSAG: The functional acronym for this type of Excitation/Display board.
- G1: Denotes the Group 1 hardware generation of the Mark V products.9
- AAA: The final three letters indicate that this is a fully revised version of the board, possessing three functional revisions (rated at an ‘A’ grade for each).
