DS200TCCBG2B - Analog IO Board

SPECIFICATIONS

Part No.: DS200TCCBG2B
Manufacturer: General Electric
Country of Manufacture: United States of America (USA)
Product Type: Common Extended Analog IO Board
Availability: In Stock
Series: Mark V

Functional Description

DS200TCCBG2B is a Common Extended Analog IO Board developed by GE. It is a part of Mark V control system. This board is designed to provide high-performance scaling, signal conditioning, and interface management for a wide range of analog inputs, ensuring that the control system receives accurate and processed data essential for safe and efficient turbine and generator operation.

Core Functionality

The board expands the Mark V system�s analog input capabilities by interfacing with signals from two major terminal boards:

• The TBCB terminal board, mounted in the R5 core, and
• The TCEB board, located in the P1 core.

It handles signal types including:

• 4�20 mA / 0�1 mA analog inputs
• RTD (Resistance Temperature Detector) signals
• Generator and bus voltage inputs
• Line current inputs

Once these signals are received, the TCCB board conditions and scales them before transmitting the data to the STCA board via the 3PL connector, making them available for the I/O Engine and the overall control system.

Key Signal Handling Circuits

Generator/Bus Voltage and Line Current Input Circuits

• The board is equipped with specialized circuitry to handle voltage and current signals from the power system:
• Voltage signals from the generator and bus lines, as well as current signals from line current transformers (CTs) and potential transformers (PTs), are received and processed.
• These inputs are initially read through the PTBA terminal board, scaled and conditioned on the TCEB board in the P1 core, and then passed to the TCCB board via the JMP connector.
• The processed signals are used to compute vital power system parameters such as:
  • Phase currents and voltages
  • Generator megawatt output
  • Power factor
  • Reactive power (VARs)

This data is critical for real-time power system monitoring and control.

4�20 mA and 0.1 mA Analog Input Circuit

• Analog input signals in the 4�20 mA and 0.1 mA range are sourced from the TBCB terminal board and transmitted to the TCCB board via the JHH connector.
• The TCCB board includes burden resistors across which the input current is dropped, generating a voltage signal proportional to the input current.
• This voltage is measured by the TCCB board, scaled appropriately, and then sent to the I/O Engine through the 3PL connector.
• The TBCB terminal board contains hardware jumpers that allow the selection of the current range (e.g., 4�20 mA or 0�1 mA), enabling flexibility in signal input configuration.

RTD (Resistance Temperature Detector) Circuit

• The board houses excitation circuitry that supplies a stable current to RTDs connected through the TBCB terminal board.
• As temperature varies, the resistance of the RTD changes, causing a measurable voltage drop across it.
• This voltage is read and processed by the TCCB board, which scales and conditions the signal.
• RTD signals are received via the JCC and JDD connectors, and the resulting data is transmitted to the I/O Engine over the 3PL connector.
• The type of RTD (e.g., platinum, nickel) and other parameters are configured through software-defined I/O constants in the system�s HMI (Human-Machine Interface).

The WOC team is always available to help you with your Mark V requirements. For more information, please contact WOC.

Frequently Asked Questions

What is DS200TCCBG2B?
It is a Common Extended Analog IO Board developed by GE under the Mark V series.

What kind of signals can the TCCB board handle?
The board can process 4-20 mA or 0-1 mA analog signals, RTD (Resistance Temperature Detector) signals, Current transformer (CT) signals and Generator and bus voltage inputs.

How does the TCCB board contribute to power monitoring?
It conditions PT and CT signals to calculate Phase currents and voltages, Generator megawatts, Power factor, and Reactive power (VARs). These parameters are essential for real-time power system monitoring and control.