IS200TGNAH1AAA - Turbine-Generator Terminal Board

SPECIFICATIONS

Part Number: IS200TGNAH1AAA
Manufacturer: General Electric
Country of Manufacture: United States (USA)
Number of channels: 24
Size: 33.02 cm high x 10.16 cm wide
Temperature Operating: -30 to 65 o C
Series: Mark VIe
Function: Turbine-Generator Terminal Board

Functional Description

IS200TGNAH1AAA is a turbine-generator terminal board developed by GE. It is part of the GE Speedtronic Mark VIe gas turbine control system.The Turbine-Generator terminal board (TGNA) serves as a crucial signal interface board specifically designed for the Mark VIe I/O pack PGEN. It facilitates seamless communication and integration between the control system and various sensors, enabling precise monitoring and control of turbine steam pressure and generator current.

Signal Interface Functionality

• The signal interface functionality plays a crucial role in facilitating seamless communication between critical components, ensuring precise monitoring, and enabling efficient control of turbine-generator systems.
• In the Mark VI system, the VGEN board collaborates closely with the board to facilitate effective signal interface operations. The VGEN board serves as a central hub for processing and transmitting signals related to turbine operation, while the TGEN board focuses on receiving and interpreting these signals to monitor and regulate generator performance. This collaborative effort ensures synchronized operation and optimized performance of the turbine-generator system.
• In Mark VIe system streamlines the signal interface process by directly interfacing with the Turbine-Generator terminal board (TGNA). This dedicated board is specifically designed to interface with three analog inputs for turbine steam pressure sensing and three current transformer (CT) feedbacks for generator current sensing. By directly interfacing with these inputs, the TGNA enables real-time monitoring and feedback, contributing to enhanced operational efficiency and system performance.

Features

• Real-Time Monitoring and Feedback: The signal interface functionality provided by both the VGEN/TGEN collaboration in the Mark VI system and the TGNA in the Mark VIe system enables real-time monitoring and feedback. This capability allows operators to promptly detect and respond to changes in turbine and generator performance, optimizing system operation and ensuring adherence to performance targets.
• Analog Input Configuration: The three analog inputs are highly configurable, supporting multiple input types including 4-20 mA, +/- 5 V, or +/- 10 V inputs. Each analog input features two jumpers for configuration adjustment. One jumper selects either current (4-20 mA) or voltage feedback, while the other optionally grounds the return path for the inputs, ensuring flexible and customizable input configurations to suit diverse system requirements.
• Current Transformer (CT) Input Flexibility: The three CT inputs can be fed from either 1 A or 5 A rated CT outputs, providing versatility and compatibility with various current transformer configurations. A separate terminal board point is provided for each of the two different amp-rated inputs, allowing for seamless integration and precise monitoring of generator currents.
• Configuration Parameter Management: The configuration parameter CT_Secondary designates which terminal board points are utilized, streamlining the configuration process and ensuring accurate signal routing within the control system.
• Connectivity and Application Flexibility: Signals are seamlessly transmitted to the Mark VIe I/O packs through a 37-pin connector, facilitating reliable data exchange and communication. Moreover, the TGNA is compatible with both simplex and Triple Modular Redundancy (TMR) applications, offering flexibility and scalability to accommodate system configurations and redundancy.

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FREQUENTLY ASKED QUESTIONS

What is IS200TGNAH1AAA?
It is a turbine-generator terminal board and is part of the GE Speedtronic Mark VIe gas turbine control system.

How does the board ensure sensor accuracy?
The board provides out-of-sensor limits checks for each Turbine-Generator input, allowing the I/O processor to create a diagnostic alarm (fault) if any input registers an out-of-range voltage or current. This proactive monitoring ensures sensor accuracy and system reliability.

What is the purpose of the ID device on each cable connector?
Each cable connector on the terminal board features its own ID device, which is a read-only chip containing essential information such as the terminal board serial number, board type, revision number, and the JR, JS, JT connector location. This information is interrogated by the I/O board, and if a mismatch is detected, a hardware incompatibility fault is generated. This mechanism ensures compatibility and prevents potential issues arising from incorrect connections.

How does the board handle hardware compatibility issues?
In the event of a hardware incompatibility, such as a mismatch between the information read from the ID device and the expected configuration, the system generates a fault to alert operators. This proactive approach allows for timely intervention to resolve compatibility issues and maintain system integrity.

Why is sensor accuracy important in turbine-generator systems?
Sensor accuracy is crucial for turbine-generator systems as it directly impacts system performance, efficiency, and safety. Accurate sensor readings ensure that the system operates within safe operating limits and allows for timely detection and mitigation of potential issues, preventing costly downtime and equipment damage.

How does the board contribute to system reliability?
By providing out-of-sensor limits checks and ensuring hardware compatibility through the ID device mechanism, the board enhances system reliability by detecting and addressing potential issues before they escalate. This proactive approach minimizes the risk of system failures, ensuring uninterrupted operation and maximizing uptime.