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Part Number: DS200KLDAF1DAA
Manufacturer: General Electric
Series: Mark V
Product type: GE EPROM Set
Availability: In Stock
Country of Manufacture: United States (USA)

Functional Description

DS200KLDAF1DAA is a GE EPROM Set designed and developed by GE. It is a part of the Mark V control system. The Mark V system enhances unit reliability through the incorporation of three redundant control processors. This innovative triple modular redundant (TMR) design ensures the safe operation, control, and protection of a unit even if one of its control processors or components should fail. With the TMR design, a single control processor can be taken offline for maintenance and repair without the need to shut down the entire turbine.

System Control Signals

  • In the Mark V Control System, each Control Processor, denoted as R, S, and T, as well as the Communication Processors, represented by C and D, possesses its own Control Signal Database, abbreviated as CDB. These CDBs serve as repositories for control signals used in governing, safeguarding, and monitoring the turbine through the Control Sequence Program (CSP). Interfaces connected to the Mark V system, including I, BOI, and remote devices interfacing via MODBUS or GSM, can access and display crucial information such as the name, value, and engineering units of these CDB signals.
  • Each CDB resides in the Random Access Memory (RAM) on the SDCC (Drive Control Card) within each Mark V Control and Communication processor. Notably, the Control Signal Databases on the control processors are identical but kept separate and contain the same values for the signals. Additionally, there exist other signal databases distributed across the Mark V system, found on various cards such as the TCQA and TCEA. These serve distinct yet related functions compared to the Control Sequence Program, utilizing their own signal databases. The control processors, when needed, extract the necessary signal values from these other databases and copy them into the Control Signal Database. Signals not transferred to the CDB remain inaccessible to both the Control Sequence Program and the Mark V Interfaces. The microprocessors within the SDCC execute the Control Sequence Program using only the control signals and their respective values stored in the Control Signal Database on that particular SDCC card.
  • The signals contained within the Control Signal Database hold significant importance as the CSP primarily manages the control and protection of the turbine unit. Understanding the nature of these control signals is essential when interpreting the CSP, especially when it comes to the sequencing logic. When modifications are made to the CSP, it often becomes necessary to introduce new signals into the Control Signal Database. This "creation" of new signals essentially involves "assigning" names to spare signals located in pre-existing memory locations within the SDCC RAM. This approach greatly streamlines the CSP development process by eliminating the laborious and complex task of addressing signals by their memory locations.
  • Within the Control Signal Database, there are two major groups of control signals: Logics and Variables. These two categories encompass several signal types, each serving specific purposes in the control and monitoring of the turbine unit.

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What is DS200KLDAF1DAA?
It is a GE EPROM Set designed and developed by GE

Can the factory-produced files be customized to meet changing configuration file requirements?
Yes, to maintain flexibility, the files produced by the factory can be customized as needed, compiled, and downloaded to adapt to changing operational requirements.

What are some examples of how file customization can enhance the performance of the Mark V System?
Customization allows the system to meet specific site conditions, interface with the Distributed Control System (DCS), configure communications, and adapt to the unique characteristics of the turbine unit, ultimately enhancing the system's efficiency.

Are there any limitations to the customization of configuration files for the Mark V System?
The system's flexibility allows for extensive customization, but it's important to ensure that any changes made align with safety, reliability, and system compatibility standards.