DS200GHDQF1CBC - Software EPROM Set

SPECIFICATIONS

Part No.: DS200GHDQF1CBC
Manufacturer: General Electric
Country of Manufacture: United States of America (USA)
Storage temperature: -40 to 85oC
Relative humidity: 5 to 95 percent, no-condensing
Product Type: Software EPROM Set
Availability: In Stock
Series: Mark V

Functional Description

DS200GHDQF1CBC is a Software EPROM Set developed by GE. It is a part of Mark V control system. EPROMs utilize an array of Floating-Gate transistors. These transistors feature an isolated gate, allowing for programmable control over the channel conductivity. To program a bit (0 or 1), a high voltage is applied to the selected transistor's source and drain terminals. This creates a strong electric field, forcing electrons through the thin gate oxide and onto the floating gate. Crucially, the high insulation of the oxide layer traps these electrons, preserving the programmed state even after power loss.

Pulse Rate Input features

• Pulse rate inputs are primarily used to track the speed of a turbine shaft with the help of magnetic speed sensors. These sensors come in three main types:
  • Sensors with R, S, and T Outputs: These provide three separate signals, or just one combined signal (R) in simpler applications.
  • TTL Type Inputs: These sensors also offer R, S, and T outputs, but in a specific digital format (TTL).
  • Sensors with P Output: These provide a single P signal.
• Simplex and Mark V Systems
  • Simplex: This system can work with up to three speed sensors.
  • Mark V: This system can interface with either standard passive or optional active speed sensors. These sensors have a wide operational range, detecting speeds as low as 2 RPM on a 60-tooth wheel. This allows the system to determine if the turbine is completely stopped or just turning on auxiliary gear.
• The Mark V can monitor a total of six magnetic speed sensors, with two connected to each of the R, S, and T controllers. An additional sensor might be wired in parallel to all three controllers. A typical setup involves three independent speed sensors, each feeding data to a separate R, S, and T controller. Voting software then analyzes these values and selects the median one to be used for governing speed and primary overspeed trip signal in the TMR systems.
• Emergency Overspeed Protection
  • For turbines lacking a dedicated mechanical bolt for emergency overspeed protection, a separate and independent electronic system is necessary. This is provided by the three boards within the P module, each equipped with its own power supply and processor.
  • Each board can connect to two speed sensors, and the overspeed trip settings can be adjusted independently.

The WOC team is always available to help you with your Mark V requirements. For more information, please contact WOC.

Frequently Asked Questions

What is DS200GHDQF1CBC?
It is a Software EPROM Set developed by GE under the Mark V series.

What is the main purpose of pulse rate inputs?
Pulse rate inputs are used to monitor the speed of a turbine shaft with the help of magnetic speed sensors.

How many speed sensors can a Simplex system handle?
A Simplex system can work with up to three speed sensors.

What are the capabilities of the Mark V system?
The Mark V system can interface with either standard passive or optional active speed sensors. These sensors have a wide operational range, detecting speeds as low as 2 RPM, allowing the system to determine if the turbine is stopped or on turning gear. It can monitor six magnetic speed sensors in total (two connected to each R, S, and T controllers) and might have an additional sensor paralleled to all three for redundancy.