DS200GASCF1AEL - GE Software EPROM

SPECIFICATIONS

Part Number: DS200GASCF1AEL
Manufacturer: General Electric
Series: Mark V
Product type: GE Software EPROM
Availability: In Stock
Country of Manufacture: United States (USA)

Functional Description

DS200GASCF1AEL is a GE Software EPROM designed and developed by GE. It is a part of the Mark V control system. The Mark V control system is a highly advanced and versatile control system developed by General Electric (GE). It is primarily used in the power generation industry, particularly in the control and management of gas and steam turbines. The Mark V control system is designed to provide precise and efficient control, monitoring, and protection for these turbines, which are commonly used in power plants

Software Voting

• The Mark V control system employs a combination of Software Implemented Fault Tolerant (SIFT) and hardware voting to ensure the reliability and integrity of its operations. This dual approach enhances the control system's ability to withstand failures and deviations while maintaining precise control over the connected machinery.
• At the start of each computing cycle, every controller operates independently, reading data from its set of sensors and exchanging this data with the other two controllers. This data exchange allows for a comprehensive comparison and validation of sensor inputs. The median values of each analog input are calculated within each controller. These median values serve as the basis for determining the control parameters for that particular controller.
• In addition to this, the system employs a diagnostic algorithm that continually monitors a predefined deadband for all analog inputs to each controller. If any of the analog inputs deviates from the expected range defined by the deadband, a diagnostic alarm is triggered. This alarm serves as a critical alert mechanism to notify maintenance personnel, enabling them to address potential issues promptly.
• The voting process is also extended to contact inputs, ensuring that the system's control actions are reliable and consistent. Each contact input is connected to a single terminal point and is wired in parallel to three contact input boards. Each of these boards features optical isolation for the 125 or 24 V DC input. A dedicated 80196 processor is situated on each board, and it precisely timestamps the inputs down to one-millisecond resolution. These time-stamped signals are then transmitted to the R, S, and T controllers for the voting process and execution of the application software.
• In scenarios where redundancy is vital, such as for functions like monitoring low lube oil pressure, the system connects redundant contact inputs to three separate terminal points. This ensures that even if a failure occurs in one circuit, the system can continue to operate reliably using alternative inputs.
• The SIFT technique is a cornerstone of the control system's reliability. It allows the system to tolerate multiple failures of contact or analog inputs without issuing erroneous trip commands from any of the three controllers. The key to its effectiveness is that it ensures that failures do not occur simultaneously in the same circuit, preventing the risk of false trip commands.
• The combination of SIFT and hardware voting, along with comprehensive sensor validation and diagnostic monitoring, enables the Mark V control system to deliver robust and highly reliable control and protection for the connected machinery. This system design ensures uninterrupted and precise operations, even in the face of various input deviations and potential failures.

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FREQUENTLY ASKED QUESTIONS

What is DS200GASCF1AEL?
It is a GE Software EPROM designed and developed by GE

How does the control system ensure reliability and precision in its operations?
The system relies on the dual approach of SIFT and hardware voting to withstand failures and deviations while maintaining precise control over connected machinery.

What happens at the beginning of each computing cycle in the system's operation?
At the start of each computing cycle, every controller operates independently, reading data from its set of sensors and exchanging this data with the other two controllers. This process allows for comprehensive sensor input comparison and validation.

What role do the median values of analog inputs play in the control system?
Median values of analog inputs are calculated within each controller and serve as the basis for determining the control parameters for that specific controller.

How does the system monitor and respond to deviations in sensor inputs?
The system employs a diagnostic algorithm that continuously monitors a predefined deadband for all analog inputs to each controller. If any input deviates from the deadband's expected range, a diagnostic alarm is activated, alerting maintenance personnel to potential issues.