GE DS215UCIBG3A EX2000 Motherboard

GE DS215UCIBG3A EX2000 Motherboard

GE DS215UCIBG3A is a Core Motherboard, specifically known as the UCIB (Unit Controller Interface Board), used in General Electric’s Speedtronic Mark V turbine control systems and the related EX2000 Excitation Control Systems.

This board is a critical backplane assembly within the control cabinet.

💡 Core Functionality

The UCIB motherboard serves as the host and interconnection point for the main processing elements of the control system.

  • Backplane and Host: It provides the physical slots and electrical circuitry necessary to host and power other vital circuit boards, often referred to as “daughter cards.”
  • Daughter Card Support: A key feature of the UCIB is that it typically contains connectors for mounting important network and processing interface boards, such as:
    • $\mu$GENI Boards: Providing the interface for the $\mu$GENI (micro-Genius) network, which handles I/O communication in the Mark V system. The board often supports two such boards for redundant communication.
    • CPU/Processor Cards: The main processing unit of the controller plugs into the UCIB.
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🛠️ GE DS215UCIBG3A EX2000 Motherboard Overview

The GE DS215UCIBG3A is a Core Motherboard, specifically known as the UCIB (Unit Controller Interface Board), used in General Electric’s Speedtronic Mark V turbine control systems and the related EX2000 Excitation Control Systems.

This board is a critical backplane assembly within the control cabinet.

💡 Core Functionality

The UCIB motherboard serves as the host and interconnection point for the main processing elements of the control system.

  • Backplane and Host: It provides the physical slots and electrical circuitry necessary to host and power other vital circuit boards, often referred to as “daughter cards.”
  • Daughter Card Support: A key feature of the UCIB is that it typically contains connectors for mounting important network and processing interface boards, such as:
    • $\mu$GENI Boards: Providing the interface for the $\mu$GENI (micro-Genius) network, which handles I/O communication in the Mark V system. The board often supports two such boards for redundant communication.
    • CPU/Processor Cards: The main processing unit of the controller plugs into the UCIB.
  • Signal Distribution: It efficiently distributes power, ground, and high-speed communication signals (like the IONET and other internal buses) between the processor and the I/O interfaces, ensuring real-time control and data exchange.
  • System Integration: When used in the EX2000 Excitation System, it forms the core of the unit controller that manages generator excitation and voltage regulation. In the Mark V system, it is integral to the central control core (e.g., the $\text{R}$ core).

When this board is replaced, it’s essential to ensure all daughter cards and EPROM/firmware chips are correctly transferred and seated to maintain the specific configuration of the turbine or exciter.

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