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Key Features of the Mark V
- Fault Tolerance: Software-implemented fault tolerance ensures system reliability.
- Triple Modular Redundancy (TMR): The TMR architecture enhances system redundancy and dependability.
- Online Maintenance: Facilitates maintenance activities without interrupting operations.
- Direct Sensor Interface: Enables seamless data acquisition from sensors.
- Built-in Diagnostics: Provides self-diagnostic capabilities for efficient troubleshooting.
- Common Hardware Platform: Suitable for both gas and steam turbine applications.
Configuration of GE Speedtronic Mark V control cards
- Identical controllers R, S, and T in a TMR setup handle critical control algorithms, protective functions, and sequencing. These controllers also acquire essential data for turbine operation. Protective outputs pass through the P module with triple redundant processors X, Y, and Z, ensuring independent protection for critical functions like overspeed.
- All controllers acquire data from triple-redundant sensors (and dual or single sensors, depending on the turbine type). All critical sensors for continuous control and protection maintain triple redundancy. The C controller serves as the interface for non-critical and non-trip I/O, enabling operator-maintenance interactions through two ARCNET ports. This controller handles operator commands, monitoring, and maintenance functions, including control adjustments, software edits, I/O assignments, and display modifications.
- Each microprocessor-based controller employs a modular design for ease of maintenance, with up to five boards per module, including a power supply. Multiple microprocessors within each controller distribute processing tasks for optimal performance. Dedicated microprocessors handle specific I/O assignments and application software, while real-time, multi-tasking operating systems manage communication processing. High-speed ARCNET links facilitate seamless communication between individual controllers.
System Application Software Development
- Application software is meticulously crafted using proprietary in-house automation tools. These tools expertly select GE's tried-and-tested control and protection algorithms, seamlessly integrating them with input/output configurations, sequencing, and displays for each specific application.
- Operating at a fixed-point data frame rate of 62.5 milliseconds (16 Hz), the frame rate signifies the time taken to read control inputs, process input data, execute the application software, and dispatch output commands to the control valves.
- Modifications to the application software are protected by passwords and can be updated in real-time while the turbine remains in operation. All application software is securely stored in the control module's nonvolatile EEPROM memory.
- Application software operates sequentially and is visually represented in a ladder diagram format. This approach is user-friendly, and a library of software building blocks empowers maintenance personnel to effortlessly introduce or modify analog loops and sequencing logic, with additional mathematical blocks available for versatility.
- For comprehensive documentation, including the primary elementary diagram, I/O assignments, and tuning constants, the software generates detailed reports directly from the source code, which can be conveniently printed on-site.
WOC is happy to assist you with any of your GE Mark VIeS requirements. Please contact us by phone or email for pricing and availability on any parts and repairs.
GE Speedtronic Mark V control cards FAQs
What are the main functions of the Mark V control system?
The Mark V system provides advanced control, real-time monitoring, and protection for turbines to ensure safe and efficient operation.
How does the Mark V protect turbines from abnormal conditions?
It has built-in features that automatically protect turbines from conditions like overspeed, loss of oil, and overheating.
What are the key features of the Mark V?
Notable features include software-implemented fault tolerance, a triple modular redundant (TMR) architecture, online maintenance capabilities, direct sensor interface, built-in diagnostics, and compatibility with both gas and steam applications.
Can you update the application software while the turbine is running?
Yes, the Mark V allows real-time updates to the application software without interrupting turbine operation.
