GE DS200TCEAG1B Emergency Overspeed Board

الوصف

The GE DS200TCEAG1B is a critical safety component known as the Emergency Overspeed Board for the GE Speedtronic Mark V Gas Turbine Control System.¹

Its primary function is to act as a dedicated protective processor, independently monitoring the turbine for safety-critical conditions and initiating an emergency shutdown, or “trip,” when necessary.²

🛡️ Core Functionality

The board’s functional acronym is TCEA.³ It resides in the Mark V system’s P core (Protective Core), emphasizing its role as a safeguard.⁴

• Overspeed Protection: The board’s most important task is to constantly monitor the turbine’s speed.⁵ If the turbine speed exceeds a predetermined safe limit (an overspeed condition), the board is designed to quickly initiate an automatic emergency shutdown sequence to prevent catastrophic mechanical failure.⁶

   

• Flame Detection Trip: Beyond speed, the DS200TCEAG1B is also responsible for processing flame detection trip signals.⁷ This helps ensure safe operation by detecting the loss of a flame in a gas turbine combustion chamber, which also warrants a shutdown.⁸

   

• Processor-Based: The board is equipped with its own microprocessor (commonly an 80196) and Programmable Read-Only Memory (PROM) modules.⁹ This design allows it to perform rapid, deterministic fault detection and trip initiation, separate from the main control processors.¹⁰

   

• Signal Interfacing: It works in conjunction with other boards like the TCEB (for flame signals) and TCTG (for generating the actual trip signal), and communicates with the rest of the control system via the IONET (e.g., through JX1/JX2 connectors).¹¹

   

⚙️ Key Hardware Features

The DS200TCEAG1B is a robust circuit board designed for industrial environments:¹²