GE DS200UCPBG6ADA IO Engine CPU Board

الوصف

The GE DS200UCPBG6ADA I/O Engine CPU Board is an Input/Output Engine Central Processing Unit Board (UCPB) manufactured by General Electric for their Mark V Speedtronic Turbine Control Systems.

This board is a critical processing and communication component that manages the flow of data between the turbine’s sensors and actuators (the I/O) and the main, triple-redundant control processors (R, S, and T cores).¹

🧠 Key Specifications and Function

The ²$\text{DS200UCPBG6ADA}$ is one of the various revision levels of the ³$\text{UCPB}$ board (⁴$\text{DS200UCPBG6A}$ is the base part number).⁵ It acts as the brain for one of the ⁶$\text{I/O}$ Engine cores (R1, R2, R3, or R5).⁷

• Primary Function: To collect, process, and package analog and digital ⁸$\text{I/O}$ data from the local boards (like sensor and actuator interfaces) within its engine core.⁹
• Processor: It contains a microprocessor, typically an 80486DX CPU, to execute the local control and diagnostic firmware.
• Communication: It broadcasts the processed ¹⁰$\text{I/O}$ information to the main control cores using an ARCNET driver over the COREBUS.¹¹
  • Fast Packets: Critical, high-priority data is transmitted at a rate of ¹²$100\text{ Hz}$ (every ¹³$10\text{ ms}$).¹⁴
  • Slow Packets: Less critical data is sent at a slower rate.¹⁵
• Mounting: It is a daughterboard that plugs into a main carrier board, such as the ¹⁶$\text{STCA}$ board, within the ¹⁷$\text{I/O}$ engine section of the Mark V panel.¹⁸

🛠️ Configuration and Replacement Notes

When handling or replacing this board, several key hardware components are critical for maintaining system function:

• PROM Modules: The board contains sockets for Programmable Read-Only Memory (PROM) modules.¹⁹ These modules hold the firmware and programming instructions unique to the system’s configuration.²⁰ The PROMs must be carefully removed from the old board and transferred to the new board to ensure the new CPU board operates with the correct turbine programming.²¹
• COREBUS Address: The board features DIP switches that are used to set the unique COREBUS address for the specific ²²$\text{I/O}$ Engine it is installed in (e.g., setting it as ²³$\text{R1}$, ²⁴$\text{R2}$, etc.). The switch settings must match the configuration of the board it is replacing.²⁵
• Connectors: Key connectors include $\text{ARCNET}$ (for COREBUS connection), $\text{COM1}$ (for the Terminal Interface Monitor/RS-232), $\text{COM2}$, and bus connectors $\text{J1}$ and $\text{J3}$ for interfacing with the main carrier board.

The $\text{DS200UCPBG6ADA}$ is an older, legacy component for the industrial control market and is primarily supported through repair or surplus parts channels.