GE DS200TCCBG3BDC TC2000 Analog Board

الوصف

The GE $\text{DS200TCCBG3BDC}$ is a specific revision of the Common Extended Analog $\text{I/O}$ Board for the General Electric Speedtronic $\text{Mark V}$ Turbine Control System. It is often referred to as an ¹$\text{I/O TC2000}$ Analog Board.²

This board is an integral component designed to handle a supplemental set of complex analog signals beyond those managed by the primary controllers, ensuring accurate monitoring and control of the gas or steam turbine and generator.

⚙️ Key Functionality

The $\text{DS200TCCBG3BDC}$ provides the crucial interface for extended signal processing, primarily focusing on conditioning, scaling, and conversion of field measurements.

Signal Types Processed

• Generator Electrical $\text{I/O}$: It processes isolated and scaled signals from Potential Transformers ($\text{PT}$s) and Current Transformers ($\text{CT}$s) to monitor and calculate:³

   

  • Generator Voltage
  • Bus Voltage
  • Line Current
• Temperature and Process $\text{I/O}$: It handles various industrial signals, including:
  • $\text{RTD}$ inputs (Resistance Temperature Detectors) for accurate temperature readings.
  • $\text{4-20 mA}$ / $\text{0-1 mA}$ current loop inputs from pressure, flow, and level transmitters.

Technical Operation

The board is essentially a microprocessor application board featuring an ⁴$\text{80196}$ CPU and multiple ⁵$\text{PROM}$ modules to store firmware and application-specific code.⁶ Its operational sequence involves:

1. Receiving raw analog signals from associated terminal boards (like ⁷$\text{TBCB}$ in the ⁸$\text{R5}$ core and ⁹$\text{TCEB}$ in the ¹⁰$\text{P1}$ core).¹¹

    

2. Using the onboard microprocessor and software algorithms to perform transducing, linearization, and scaling.¹²

    

3. Converting the conditioned analog voltage signals into digital data using Voltage-Controlled Oscillators ($\text{VCO}$s).¹³

    

4. Transmitting the final, scaled digital data to the $\text{Mark V}$‘s main control processors ($\text{R}$, $\text{S}$, $\text{T}$) via the COREBUS connector ($\text{3PL}$).

📋 Part Number Breakdown

The full part number $\text{DS200TCCBG3BDC}$ includes several revision identifiers:

• $\text{DS200}$: The product series for $\text{Mark V}$ components.
• $\text{TCCB}$: The functional acronym for the $\text{TC2000}$ Common Extended Analog $\text{I/O}$ Board.
• $\text{G3}$: Indicates the Group 3 hardware design generation.
• $\text{B}$ (First $\text{B}$): The Functional Revision.
• $\text{D}$: A subsequent functional or component revision.
• $\text{C}$: Another minor functional or artwork revision.

The multiple trailing letters (BDC) denote a specific combination of functional and artwork revisions made to the base $\text{G3}$ design. When replacing the board, it is critical to match the revision or use a newer, guaranteed backward-compatible version, and often to transfer the $\text{PROM}$ modules to ensure the correct application software is running.