GE DS200UDSAG1ADE Turbine Excitation Card

الوصف

The GE DS200UDSAG1ADE is a Display/Keyboard Interface Board (often classified as an Excitation Card) primarily used in the General Electric Mark V Speedtronic Turbine Control System.¹

While it is functionally associated with the excitation system (which controls the generator’s field current), its main technical role is to provide the local Human-Machine Interface (HMI) for the operator to monitor and interact with the excitation control process.

⚙️ Key Technical Features and Function

The DS200UDSAG1ADE is a printed circuit board (²$\text{PCB}$) with the functional acronym UDSA (User Display/Keyboard Scanner Assembly or similar).³ It is a late revision (⁴$\text{ADE}$) of the original ⁵$\text{DS200UDSAG1}$ board.⁶

Primary Function

• Operator Interface: It serves as the physical interface, containing the necessary hardware to allow operators to view system status, faults, and parameters, as well as input commands for diagnostics, settings changes, and control mode toggling.⁷

Hardware Components

The board is populated with hardware components dedicated to processing and communication:⁸

• Microprocessor: Features an 80196 microprocessor which is the core unit for executing instructions, scanning the keypad inputs, and managing the display output.⁹
• Memory: Includes Erasable Programmable Read-Only Memory (EPROM) modules to store the main operating program and configuration data.¹⁰
• Displays: The board typically includes:
  • 21 4-character displays for alphanumeric feedback on various system parameters.¹¹
  • 32 LEDs (Light Emitting Diodes) for visual status indicators and alarm signals.¹²
• Input Components: It interfaces with the physical keypad, which often includes a combination of:
  • 32 configurable keys (with status LEDs).¹³
  • 16 numeric/diagnostic keys.
• Configuration: It is typically equipped with multiple jumpers (e.g., 3-pin jumpers) that allow for customization of the board’s behavior and hardware configuration settings.¹⁴
• Power & Communication: The board handles power conversion (e.g., a ¹⁵$\text{-24 V DC}$ to ¹⁶$\text{5 V}$ switching power supply) and often includes circuitry for an ¹⁷$\text{RS-232C}$ interface for communication with external or supervisory control systems.¹⁸

The ¹⁹$\text{DS200UDSAG1ADE}$ is designed to be a durable component for industrial automation, specifically for reliable power generation applications within the GE Mark V Speedtronic system.²⁰