GE DS200TCCBG3BCB Common Extended Analog IO Board

الوصف

The GE ¹$\text{DS200TCCBG3BCB}$ is a Common Extended Analog ²$\text{I/O}$ Board for the General Electric ³$\text{Mark V}$ Speedtronic Turbine Control System.⁴

It is an advanced revision of the $\text{TCCB}$ (Extended Analog $\text{I/O}$ Card) and serves as a crucial signal processing interface to handle a supplementary set of analog measurements essential for safe and efficient turbine operation.

🛠️ Primary Function and Role

The board’s main role is to condition, scale, and digitize a wide array of secondary analog signals from field devices before sending the data to the main ⁵$\text{Mark V}$ control processors (⁶$\text{R}$, ⁷$\text{S}$, ⁸$\text{T}$).⁹

Signal Processing Capabilities:

• Temperature Inputs ($\text{RTD}$s): It reads signals from Resistance Temperature Detectors ($\text{RTD}$s) for critical temperature monitoring (e.g., bearings, generator winding).¹⁰

   

• Current Inputs ($\text{mA}$): It processes standard industrial $\text{4-20 mA}$ and $\text{0-1 mA}$ signals from various transmitters (pressure, flow, level).
• Generator Electrical Measurements: The board is vital for generator control, as it handles the conditioning of signals from Potential Transformers ($\text{PT}$s) and Current Transformers ($\text{CT}$s) to measure:
  • Generator and Bus Voltage Inputs
  • Line Current Inputs
• Signal Conditioning: It uses internal circuitry and software transducers to perform the necessary filtering, isolation, amplification, and scaling of these raw signals, converting them into accurate, reliable data points for the control system’s logic.¹¹

   

💻 Technical and Revision Details

• System Location: The ¹²$\text{DS200TCCBG3BCB}$ is typically housed in a core module within the ¹³$\text{Mark V}$ panel, often the ¹⁴$\text{R5}$ core.¹⁵ It interfaces with external terminal boards, such as the ¹⁶$\text{TBCB}$ and ¹⁷$\text{TCEB}$ (in the ¹⁸$\text{P1}$ core), to receive the physical field wiring signals.¹⁹

   

• Microprocessor: It features an onboard ²⁰$\text{80196}$ Microprocessor that executes the necessary software transducing algorithms for signal manipulation.²¹

   

• Revisions ($\text{G3BCB}$): The part number structure $\text{DS200TCCB}\textbf{G3BCB}$ indicates:
  • $\text{G3}$: This signifies the board is part of the Group 3 revision of the $\text{TCCB}$ hardware.
  • $\text{B}$ (First ²²$\text{B}$): This is the primary functional revision.²³

     

  • $\text{C}$ (Second ²⁴$\text{C}$): This is a subsequent functional or artwork revision.²⁵

     

  • $\text{B}$ (Third ²⁶$\text{B}$): This is the final artwork or minor component revision.²⁷

     

The multiple letters at the end indicate that the board has been modified multiple times from the original ²⁸$\text{G3}$ design, including two functional product revisions and an artwork revision.²⁹ In maintenance, you would typically use this exact part number or a later, backward-compatible version.