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The GE DS200TBQCG1 (and its revisions like DS200TBQCG1ABB or DS200TBQCG1AAA) is an Analog Input/Milliampere I/O Termination Module, often referred to as an RST Analog Termination Board (TBQC). It is a crucial printed circuit board (PCB) component of the General Electric Mark V Speedtronic Turbine Control System.
Its primary function is to serve as the interface and termination point for analog signals, particularly current loop signals (milliampere), from various field devices.
Primary Function and Use
- Signal Termination: The module provides a termination point for incoming and outgoing analog signals in the control system, ensuring stable and reliable connections.
- Milliampere I/O: It is specifically designed to handle 4-20 mA current loop input signals from sensors (like temperature, pressure, or flow transducers) and to manage milliampere output signals.
- LVDT/R Inputs: It also connects the LVDT/R position inputs (used for positional feedback in turbine control) to the main control boards.
- Integration: It connects the terminated field signals to the TCQA (Turbine Control, Qualification, and Acquisition) board within its respective control core.
- Application: It is used in the control and management systems of wind, gas, and steam turbine automated drive assemblies.
Key Specifications and Features
- System Series: GE Mark V (DS200 Series).
- Location: The TBQC module is typically located at position nine in the R1, R2, and R3 cores of the Mark V system.
- Terminals and Connectors:
- It features two large terminal blocks (TB1 and TB2), typically offering a total of 166 terminals (83 per block) for connecting signal wires.
- It includes multiple connectors (such as three 40-pin and three 34-pin) for inter-board communication.
- Configurable Outputs: Jumpers (e.g., BJ16 and BJ17) on the board allow the configuration of milliampere outputs to select between a 20 mA or 200 mA maximum current range.
- Core Connections: The JBR connector handles the 4-20 mA input signals and milliamp output signals, while the JFR connector handles the LVDT/R position input signals, with both connecting to the TCQA board.
