GE DS200TBCBG1A Termination Module

الوصف

The GE DS200TBCBG1A Termination Module is a specialized analog $\text{I/O}$ interface board used in the General Electric Mark V Speedtronic Turbine Control System.

Its primary role is to serve as the field-wiring termination point for a mix of critical analog input signals, specifically Resistance Temperature Detectors ($\text{RTD}$s) and current loop ($\text{4-20 mA}$) transducers.

Key Functions and Specifications (TBCB)

The $\text{DS200TBCBG1A}$ is identified by the functional acronym TBCB (Termination Board – C/B Analog) and is a dual-function termination board.

1. Signal Types and Capacity

• RTD Inputs: It terminates and handles $\text{RTD}$ (temperature sensor) signals.
• Current Loop Inputs: It also terminates and handles $\text{4-20 mA}$ analog current signals from various transducers (e.g., pressure, flow, level).
• Total Inputs: The board has a total capacity of 36 inputs, typically divided into:
  • 22 milliamp transducer inputs.
  • 14 $3$-wire $\text{RTD}$ inputs.

2. Signal Routing

The board’s outputs are routed to a main processing board, the Common Extended Analog $\text{I/O}$ Board (TCCB), located in the same cabinet core (usually the $\text{R5}$ core).

• JHH Connector: Used to transmit the current loop ($\text{mA}$) input signals to the $\text{TCCB}$ board.
• JII Connector: Used to transmit the $\text{RTD}$ temperature signals to the $\text{TCCB}$ board.

3. Hardware Configuration (Jumpers)

A key feature of the $\text{DS200TBCBG1A}$ is the presence of hardware configuration jumpers that allow for flexibility in handling the current signals:

• mA Input Configuration: A portion of the $\text{4-20 mA}$ inputs (typically 8 of them, specifically signals $\text{15-22}$) can be configured using hardware jumpers ($\text{BJ23}$ through $\text{BJ30}$) to a $0-1\text{ mA}$ current range instead of the standard $\text{4-20 mA}$ range.
• Other jumpers ($\text{BJ1}$ through $\text{BJ22}$) are typically used to connect the $\text{mA}$ input signals to the $\text{DCOM}$ (Digital Common).

The revision level G1A in the part number indicates the first product grouping ($\text{G1}$) and the initial functional revision ($\text{A}$) of this specific board design.