GE DS200TCPAG1A MKV, Control Processor Card

Central Processing Unit: The TCPAG1A board contains the main microprocessor and its associated memory, including EPROMs for storing the firmware and control applications. It reads data from all I/O boards, processes it according to the control algorithms, and sends commands back to the output boards to control turbine operations such as fuel flow, speed, and load.
Triple Modular Redundancy (TMR): The Mark V system is renowned for its TMR architecture. Three identical DS200TCPA cards are used in parallel (designated as R, S, and T). All three processors execute the same control program simultaneously. Their outputs are compared and voted on a “two-out-of-three” basis. If one card fails, the other two continue to operate, ensuring uninterrupted control and providing a high degree of fault tolerance and reliability.
System Integration: The processor card is located at the core of the Mark V panel. It communicates with various I/O boards, including analog (TCCB), digital (TCDA), and overspeed (TCEA) cards, to gather comprehensive data from the field. It also interfaces with the human-machine interface (HMI) and other plant control systems via high-speed ARCNET links and other communication ports.
On-Board Diagnostics: The board is equipped with diagnostic LEDs and internal monitoring routines that can detect and report failures to the card level. This allows maintenance personnel to quickly identify and replace a faulty processor without shutting down the turbine, a key benefit of the TMR design.

الوصف

The GE DS200TCPAG1A is a Control Processor Card for the Mark V Speedtronic turbine control system. It is the central processing unit (CPU) and the “brain” of the control system, responsible for executing all control logic, processing I/O, and managing communications for a gas, steam, or hydro turbine.

Technical Breakdown 🧠

This card is the heart of the Mark V system, where all critical decisions are made and executed.

Central Processing Unit: The TCPAG1A board contains the main microprocessor and its associated memory, including EPROMs for storing the firmware and control applications. It reads data from all I/O boards, processes it according to the control algorithms, and sends commands back to the output boards to control turbine operations such as fuel flow, speed, and load.
Triple Modular Redundancy (TMR): The Mark V system is renowned for its TMR architecture. Three identical DS200TCPA cards are used in parallel (designated as R, S, and T). All three processors execute the same control program simultaneously. Their outputs are compared and voted on a “two-out-of-three” basis. If one card fails, the other two continue to operate, ensuring uninterrupted control and providing a high degree of fault tolerance and reliability.
System Integration: The processor card is located at the core of the Mark V panel. It communicates with various I/O boards, including analog (TCCB), digital (TCDA), and overspeed (TCEA) cards, to gather comprehensive data from the field. It also interfaces with the human-machine interface (HMI) and other plant control systems via high-speed ARCNET links and other communication ports.
On-Board Diagnostics: The board is equipped with diagnostic LEDs and internal monitoring routines that can detect and report failures to the card level. This allows maintenance personnel to quickly identify and replace a faulty processor without shutting down the turbine, a key benefit of the TMR design.

Applications 🏭

The DS200TCPAG1A is an essential part of Mark V turbine control systems, where it provides:

Turbine Speed and Load Control: Manages the core governor functions to maintain the desired speed and load output.
Sequencing and Protection: Controls the complex startup and shutdown sequences and executes protective logic in response to trips and alarms.
Fault-Tolerant Operation: Its TMR architecture ensures continuous operation even if a single processor or a sensor fails.