GE DS200SIOBH1AAA SC2000 VME I/O Board

الوصف

The GE DS200SIOBH1AAA is a specific revision of the SC2000 VME I/O Board (SIOB), which stands for Input/Output Board. It was designed by General Electric for use in the Mark V Speedtronic Turbine Control System and its associated drive and control subsystems ($\text{SC}2000$ or $\text{UC}200\text{V}$).

Its primary function is to serve as an auxiliary $\text{I/O}$ expansion module, increasing the total number of $\text{I/O}$ points the $\text{VME}$-based control system can manage.

Key Features and Design

The $\text{H1}$ grouping in the part number indicates a specific hardware construction:

• System Integration: The board mounts into a standard VME rack slot and communicates with the main processors via the $\text{VME}$ bus. It supports 16-bit data transfers and standard $\text{VME}$ addressing.
• Purpose: It expands the system’s ability to monitor and control field devices by connecting to $\text{TBA}$ or $\text{TBB}$ external terminal boards via ribbon cables plugged into its faceplate connectors ($\text{J1}$ and $\text{J2}$).
• Protection (H-Designation): The “H” in $\text{SIOBH1}$ indicates that the board typically features a conformal coating. This is a thin, protective layer applied to the printed circuit board to shield the electronics from harsh industrial elements like moisture, dust, and chemical vapors.
• Configuration: The board is highly configurable, featuring:
  • Three Switch Blocks (totaling 18 switches) for setting addressing and mode configurations.
  • Numerous Jumpers ($\sim 20$) for tuning parameters like scaling or enabling test modes.
• Diagnostic Indicator: A single $\text{LED}$ on the faceplate lights up when the board is accessed by the $\text{VME}$ bus, confirming communication activity.

Part Number Breakdown (DS200SIOBH1AAA)

The multiple trailing letters denote a history of specific design updates and revisions: