DS200TCCAF1ACC - Software EPROM

SPECIFICATIONS

Part Number: DS200TCCAF1ACC
Manufacturer: General Electric
Series: Mark V
Product type: Software EPROM
Availability: In Stock
Country of Manufacture: United States (USA)

Functional Description

DS200TCCAF1ACC is a Software EPROM designed and developed by GE. It is a part of the Mark V control system. The EPROM contains specific software and firmware that is essential for the operation and control of the Mark V system.

System Pulse Rate Inputs

Pulse rate inputs are a crucial component of the Mark V Turbine Control System, primarily employed for monitoring turbine shaft speed using magnetic speed sensors.

• Application and Sensor Categories: Pulse rate inputs are most commonly utilized for monitoring the speed of the turbine shaft, primarily achieved through the use of magnetic speed sensors. These sensors can be categorized into three main groups:
  • Category 1 - Sensors feeding R, S, and T (or just R in Simplex applications): These sensors provide speed data to all three controllers in a Triple Modular Redundant (TMR) system, ensuring redundancy and reliability.
  • Category 2 - TTL Type Inputs feeding R, S, and T: These sensors use TTL (Transistor-Transistor Logic) technology to transmit speed data to the controllers, further enhancing precision.
  • Category 3 - Sensors feeding P: In certain scenarios, speed sensors may specifically provide data to the P module, which serves unique purposes.
• Simplex Configuration: In Simplex configurations, where redundancy is not a primary concern, there can still be up to three speed sensors in use, providing flexibility and backup monitoring.
• Interface with Speed Sensors: The Mark V system can interface with both standard passive and optional active speed sensors, boasting an effective frequency range from 2 to 10,000 Hz. This broad frequency range enables the system to capture a wide range of speed data, from slow rotations to high-speed operation.
• Sensitivity and Detection: The system's circuitry is designed with high sensitivity, allowing it to detect even a minor change of two RPM (Revolutions Per Minute) on a 60-tooth wheel. This level of sensitivity is especially critical for determining whether the turbine is stationary or in motion using the speed sensor data.
• Sensor Monitoring: Each of the R, S, and T controllers can monitor up to six magnetic speed sensors independently. Additionally, one magnetic pickup can be paralleled to all three controllers, providing backup redundancy.
• Median Value Selection: In typical applications, three speed sensors are wired independently to each of the R, S, and T controllers. The voting software then selects the median value from these inputs for governing the speed parameter and determining the primary overspeed trip signal in TMR systems. This ensures that the system maintains stability and safety during turbine operation.
• Backup Emergency Overspeed Protection: For turbines lacking a mechanical bolt for backup emergency overspeed protection, a separate and independent set of electronics is required. This protection is facilitated by the three boards in the P module, which operate with their own power supplies and processors. Each board can interface with two speed sensors, and the overspeed trip settings are adjustable to provide an additional layer of safety.

WOC is available 24x7 to assist you with any of your General Electric requirements. Please contact us by phone or email for pricing and availability on GE, Bently Nevada or Woodward parts and repairs.

FREQUENTLY ASKED QUESTIONS

What is DS200TCCAF1ACC?
It is a Software EPROM designed and developed by GE

How many speed sensors can be used in a Simplex configuration, and why is this flexibility important?
In a Simplex configuration where redundancy is not the primary concern, you can still utilize up to three speed sensors. This flexibility provides backup monitoring and helps maintain turbine safety in the absence of redundancy.

What is the frequency range of the speed sensors that the Mark V system can interface with?
The Mark V system can interface with both standard passive and optional active speed sensors, covering an effective frequency range from 2 to 10,000 Hz. This wide frequency range allows the system to capture speed data across a broad spectrum, from slow rotations to high-speed turbine operation.

How sensitive is the system's circuitry in detecting changes in speed, and why is this sensitivity important?
The system's circuitry is highly sensitive, capable of detecting even minor changes of two RPM (Revolutions Per Minute) on a 60-tooth wheel. This level of sensitivity is crucial for determining whether the turbine is stationary or in motion, contributing to safety and operational precision.