GE DS200TBQCG1ABB Analog Input Milliamp I/O Termination Module

الوصف

The GE DS200TBQCG1ABB is an Analog Input Milliamp I/O Termination Module, also known as an RST Analog Termination Board, manufactured by General Electric for the Mark V Speedtronic Turbine Control System.

Its primary purpose is to serve as the physical interface between the turbine’s field devices and the main control electronics, ensuring reliable signal termination and transmission within the system’s triple-redundant architecture.

Key Functionality and I/O Types

The DS200TBQCG1ABB handles several critical types of analog signals essential for turbine control and monitoring:

• Milliamp Inputs (Analog Inputs): It terminates the field wiring for current-based analog sensor signals, typically the industry-standard 4-20 mA range. These signals represent measurements like temperature, pressure, and flow.
  • The board is often cited as having termination for up to 16 milliamp input signals.
  • Jumpers BJ1 through BJ15 are used to connect the first 15 milliamp input signals to DCOM (Digital Common).
• LVDT/R Position Inputs: It terminates inputs from Linear Variable Differential Transformer (LVDT) or LVDT/R sensors, which are used to measure the precise position of control valves and actuators.
• Milliamp Outputs (Analog Outputs): It provides termination for analog current output signals sent from the controller, typically used to drive remote meters or monitoring devices.
  • Jumpers BJ16 and BJ17 are used to select the maximum current output range for the two milliamp output signals, allowing configuration for either a 20 mA maximum or a 200 mA maximum.

System Integration

1. System: The board is an integral component of the GE Mark V system, which manages the start-up, speed control, temperature control, and protection of gas, steam, and wind turbines.
2. Location: The TBQC termination board is installed in the Mark V control cabinet, typically at position 9 in each of the redundant <R>, <S>, and <T> control cores.
3. Connectivity: It connects the terminated field signals to the primary processing board in the core, the TCQA (Turbine Control, Qualification, and Acquisition) board.
   • The JBR connector handles the 4-20 mA inputs and the milliamp outputs to and from the TCQA board.
   • The JFR connector handles the LVDT/R position inputs to the TCQA board.
4. Physical Design: The board features two large terminal blocks (TB1 and TB2), each with up to 83 terminals, for the physical connection of signal wires.