SPECIFICATIONS
Part Number: IS200QTBAH2A
Manufacturer: General Electric
Series: Mark VI
Availability: In Stock
Manual: GEH-6721
Country of Manufacture: United States (USA)
Functional Description
IS200QTBAH2A is a terminal board developed by GE. It is a part of Mark VI control system. The terminal board plays a pivotal role in the Mark VI system, serving as the customer wiring connection point and efficiently distributing signals to the R, S, and T I/O boards through three separate DC-37 pin connectors. The design philosophy of the terminal board is intricately tailored to meet the specific requirements of each type of I/O board, with a focus on optimizing functionality and mitigating potential points of failure.
Terminal Board Features
- Customer Wiring Connection: The terminal board serves as the designated point for customer wiring connections. It provides a centralized and organized interface for users to connect their wiring, facilitating a streamlined integration process.
- Signal Distribution to I/O Boards: Signals from the terminal board are systematically fanned out to three separate DC-37 pin connectors, leading to the R, S, and T I/O boards. This structured approach ensures accurate and efficient signal distribution across the system.
- I/O Board-Specific Terminal Boards: Different types of I/O boards have their own dedicated terminal boards, each designed to accommodate the specific needs of the associated board. For instance, variations in the thermocouple board include versions with two connectors for direct cabling to one I/O board and versions with six connectors for R, S, and T fan-out.
- Redundancy Considerations:Acknowledging the potential vulnerability of the fan-out circuit as a single point of failure, the terminal board incorporates a minimal amount of active circuitry. This primarily includes filters and protective devices, ensuring reliability while minimizing the risk of failure.
- Power Management: While power for the outputs typically originates from the I/O board, the terminal board design accommodates specific requirements. For relay and solenoid outputs, separate power plugs are mounted on the terminal board, offering versatility in power management.
Mounting features
- Simplified Design for Simplicity: Streamlines the functionality, ensuring a straightforward interface for simplex control applications.
- Cost-Effective Solution: Recognizing the economic considerations for smaller-scale applications, these terminal boards provide a cost-effective alternative. The emphasis on efficiency and affordability makes them an ideal choice for small gas and steam turbines.
- Compact DIN-Rail Mounting: The DIN-rail mounting further contributes to the compact nature of these terminal boards. This space-efficient design allows for easy installation in confined spaces, maintaining the overall compact footprint of the control system.
- Application Focus: Tailored specifically for small gas and steam turbines, these terminal boards address the unique requirements and constraints associated with these applications. The design takes into account the intricacies of smaller systems, optimizing performance accordingly.
- Elimination of IONet: In contrast to larger systems, these terminal boards do not utilize IONet. Instead, the D-type terminal boards establish a direct cable connection into the control chassis to interface seamlessly with the I/O boards. This simplification reduces complexity and contributes to a more streamlined control architecture.
- Direct Interface with I/O Boards: The direct cable connection into the control chassis facilitates a direct interface with the I/O boards. This design choice ensures efficient signal transmission and simplifies the overall wiring structure, enhancing the reliability of the simplex control system.
- Adaptability for Small Turbines: Engineered to adapt to the unique characteristics of small gas and steam turbines. This targeted approach ensures optimal performance and responsiveness in these smaller-scale applications.
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FREQUENTLY ASKED QUESTIONS
What is IS200QTBAH2A?
It is a Terminal Board developed by GE
Do all types of I/O boards have the same terminal board configuration?
No, each type has its own special terminal board with varying connector combinations. For example, the thermocouple board comes in two versions-one with two connectors for direct cabling and another with six connectors for R, S, and T fan-out.
How does the thermocouple board differ in terms of fan-out capability?
There are two versions of the thermocouple board. One version does not fan out and has two connectors for cabling to one I/O board, while the other version fans out with six connectors for R, S, and T connections.
Why is the fan-out circuit considered a potential single point of failure?
The fan-out circuit is a potential single point of failure because, in certain configurations, it plays a critical role in distributing signals. To mitigate this risk, the terminal board contains minimal active circuitry, primarily consisting of filters and protective devices.
What is the purpose of limiting active circuitry on the terminal board?
Limiting active circuitry on the terminal board is a design choice to enhance reliability. The inclusion of minimal active components, such as filters and protective devices, helps reduce the likelihood of failures and ensures the robustness of the terminal board.
