GE DS215UCIAG1AZZ05A UC2000 Motherboard

GE DS215UCIAG1AZZ05A UC2000 Motherboard

GE DS215UCIAG1AZZ05A is the UC2000 Motherboard, also known by its functional acronym UCIA, a key component in General Electric Mark V Turbine Control Systems and EX2000 Excitation Control Systems.

It serves as the main printed circuit board for the UC2000 (Unit Controller 2000) subseries, which functions as a single-unit controller.

💡 Core Functionality

The UCIA motherboard’s primary role is to act as the backplane and host for the critical processing components of the UC2000 Unit Controller.

  • Host for Daughter Cards: It contains the necessary connectors, standoffs, and electrical pathways to physically and electrically attach other crucial circuit boards, known as “daughter cards.” These include:
    • The UCPB (CPU Daughterboard), which is the main processing unit.
    • GENI Boards (IC660ELB912G), which provide the Genius bus I/O network interface.
    • The PANA ARCNET no-LAN driver board.
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🔎 The GE DS215UCIAG1AZZ05A is the UC2000 Motherboard, also known by its functional acronym UCIA, a key component in General Electric Mark V Turbine Control Systems and EX2000 Excitation Control Systems.

It serves as the main printed circuit board for the UC2000 (Unit Controller 2000) subseries, which functions as a single-unit controller.

💡 Core Functionality

The UCIA motherboard’s primary role is to act as the backplane and host for the critical processing components of the UC2000 Unit Controller.

  • Host for Daughter Cards: It contains the necessary connectors, standoffs, and electrical pathways to physically and electrically attach other crucial circuit boards, known as “daughter cards.” These include:
    • The UCPB (CPU Daughterboard), which is the main processing unit.
    • GENI Boards (IC660ELB912G), which provide the Genius bus I/O network interface.
    • The PANA ARCNET no-LAN driver board.
  • Signal Distribution: It is responsible for distributing power and communication signals between the mounted daughter cards, ensuring the entire controller operates cohesively.
  • Onboard Processing: The board itself features a microprocessor (such as an Intel 80196) and PROM modules that translate specific signals (like fuel skid pressure signals) before they are sent to the main CPU daughterboard.
  • Diagnostics: It includes diagnostic tools such as LEDs and test points to aid in troubleshooting and monitoring the board’s status.

⚙️ System Context

  • Series: Primarily associated with the GE Mark V Speedtronic and EX2000 Excitation Control Systems.
  • Location: It is typically situated in the R core (Control Engine core) of the control cabinet.
  • Assembly: The motherboard and its attached daughter cards form the entire UC2000 Unit Controller. When replacing the board, it’s considered best practice to move the whole UCIA/UCPB assembly and ensure any attached daughter cards (like the μGENI boards) are properly re-seated.

The DS215UCIAG1AZZ05A is a robust component that enables the modular and configurable architecture of the GE control system.

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