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The GE DS200UDSAG1ADD Control System Excitation Board is a specialized printed circuit board (PCB) that serves as the Display/Keyboard Interface and Controller for the generator’s excitation system within General Electric’s Mark V Speedtronic Turbine Control System.1
It is a crucial component for regulating the output voltage and reactive power of the generator, ensuring stable operation.
⚡ Function and Features
The DS200UDSAG1ADD is an updated revision in the UDSAG1 family, which means it carries out the core excitation control and diagnostic functions with minor hardware or firmware improvements (ADD suffix).
- Excitation Control: It contains an 80196 microprocessor to execute the necessary control algorithms for managing the generator’s field current.2 This control is often integrated with GE’s EX2000 or EX2100 excitation drive systems.
- Diagnostic Interface: One of its main purposes is providing local diagnostic feedback to technicians:
- Alphanumeric Displays: It typically features up to 21 4-character displays to show status codes and process values.3
- Status LEDs: Up to 32 LEDs offer quick, visual indication of the board’s operational state and any detected faults.4
- Firmware: The board holds its operating instructions in several sockets for EPROM (Erasable Programmable Read-Only Memory) modules.
⚙️ System Context
In the Mark V control system, the DS200UDSAG1ADD bridges the gap between the primary turbine control cores (R, S, T) and the high-speed power electronics required for excitation. It translates high-level commands into precise, real-time control signals.
As a legacy DS200 series component, support is primarily handled through specialized industrial parts suppliers and repair services.
