SPECIFICATIONS
Part No.: IS200QTBAH1A
Manufacturer: General Electric
Country of Manufacture: United States of America (USA)
Temperature Operating: 0 to 60 oC
Product Type: Terminal Board
Availability: In Stock
Series: Mark VI
Functional Description
IS200QTBAH1A is a Terminal Board developed by GE. It is a part of Mark VI series. Designed with multiple terminals to accommodate numerous field wiring connections, facilitating complex I/O requirements. Fully compatible with other Mark VI system components, supporting seamless integration within the modular architecture.
Redundancy Options in the Mark VIe Control System
The Mark VIe control system offers scalable redundancy options designed to enhance system reliability, availability, and maintainability. These options allow users to select a configuration that best fits the criticality and complexity of their application, ranging from basic single-controller setups to highly fault-tolerant triple-modular redundancy (TMR) architectures.
1. Simplex System (Single Controller)
- The basic configuration consists of a single (simplex) controller paired with simplex Input/Output (I/O) modules and connected via a single communication network.
- This setup is suitable for less critical applications where system simplicity and cost-effectiveness are priorities.
- While the simplex system provides reliable control, it offers limited fault tolerance because there is no backup controller or duplicated hardware to take over in the event of a failure.
- Maintenance or repair often requires system downtime, as there is no redundancy to support online servicing.
2. Dual System (Dual Controllers)
- The dual system configuration enhances reliability by incorporating two controllers operating in parallel.
- It can utilize either singular or fanned Triple Modular Redundancy (TMR) I/O modules, allowing more robust handling of input/output signals.
- Communication is maintained over dual networks, providing redundant communication paths between controllers and field devices.
- This setup supports online repair and maintenance, as one controller can continue to operate while the other undergoes servicing or replacement.
- Dual systems significantly reduce the risk of complete control failure and are suitable for moderately critical applications where some degree of fault tolerance and uptime is required.
3. Triple Modular Redundancy (TMR) System (Three Controllers)
- The most advanced redundancy option is the TMR system, which includes three independent controllers working together.
- Like the dual system, the TMR setup can use either singular or fanned TMR I/O modules, designed to increase signal integrity and fault tolerance.
- It employs three separate communication networks to ensure multiple redundant communication paths.
- A key feature of the TMR system is state voting between the three controllers. This means the system continuously compares outputs and inputs from each controller and uses a majority voting logic to detect and isolate faults in any one controller or its I/O.
- This voting mechanism provides maximum fault detection, isolation, and system availability, making it highly resilient against hardware failures or communication errors.
- The TMR architecture is ideal for mission-critical applications where continuous operation and zero downtime are essential, such as in large power plants or industrial processes with high safety and reliability requirements.
The WOC team is always available to help you with your Mark VI requirements. For more information, please contact WOC.
Frequently Asked Questions
What is IS200QTBAH1A?
It is a Terminal Board developed by GE under the Mark VI series.
How does the Dual system improve reliability?
The Dual system uses two controllers and dual networks, allowing one controller to take over if the other fails. It supports online maintenance and offers better fault tolerance than Simplex.
What is Triple Modular Redundancy (TMR)?
TMR uses three controllers and three networks with a voting system that compares controller states. This configuration provides the highest level of fault detection and system availability.
