GE DS200UCPBG6AFB IO Engine CPU Board

الوصف

The GE DS200UCPBG6AFB is an I/O Engine CPU Board (UCPB) manufactured by General Electric for use in the Speedtronic Mark V Turbine Control System (DS200 Series).¹

This board serves as the dedicated processor for an Input/Output (²$\text{I/O}$) engine, managing the communication and processing of field data for the main turbine controllers.³

💻 Key Function and Role

The primary function of the $\text{DS200UCPBG6AFB}$ is to process, package, and transmit I/O data to the main Triple Modular Redundant ($\text{TMR}$) controllers ($\text{R, S, T}$) via the $\text{COREBUS}$ communication link.

• I/O Processing: It contains a microprocessor that handles the raw signals received from the I/O termination boards and converts them into digital data packets.⁴ This dedicates processing power to the I/O function, keeping the main $\text{TMR}$ controllers focused on critical control and protection algorithms.
• Communication Bridge: It utilizes an ARCNET driver to broadcast data packets over the ⁵$\text{COREBUS}$ to the ⁶$\text{R, S, and T}$ control cores.⁷ This communication is essential for the $\text{TMR}$ system to perform its two-out-of-three voting on sensor inputs.
• Physical Location: The UCPB board is typically installed as a daughterboard mounted on the ⁸$\text{STCA}$ (I/O Engine ⁹$\text{ST}$ Card Assembly) within the I/O cores (e.g., ¹⁰$\text{R1}$, ¹¹$\text{R2}$, ¹²$\text{R3}$).¹³
• Data Handling: It is responsible for organizing the data into “fast packets” (for critical, time-sensitive information, typically at ¹⁴$100 \text{ Hz}$) and “slow packets” (for less critical data).¹⁵

📋 Technical Specifications

Note: Since the ¹⁶$\text{Mark V}$ is a legacy system, the ¹⁷$\text{DS200UCPBG6AFB}$ is generally considered an obsolete part, but it remains a critical component in many operating turbine control systems.¹⁸