DS3800HSPC - Speed Position Input Board

SPECIFICATIONS

Part Number: DS3800HSPC
Manufacturer: General Electric
Series: Mark IV
Product type: Speed Position Input Board
Availability: In Stock
Mounting: Panel Mounting
Country of Manufacture: United States (USA)

Functional Description

DS3800HSPC is a speed position input board developed by GE. It is a part of Mark IV control system. It is responsible for providing accurate and reliable speed and position information to the control system. It is used to regulate the operation of the turbine. The board typically consists of sensors that measure the rotational speed and position of the turbine shaft. Also, signal conditioning and amplification circuits that process the sensor signals and output the information in a form that can be used by the control system. The board may also include microprocessors or other processing units to further refine the signals and perform diagnostics.

Features

• The accuracy and reliability of the SPI board are essential for the safe and efficient operation of the turbine. Any errors or malfunctions in the SPI board can lead to incorrect speed or position measurements, which can result in unstable or unsafe turbine operation. Therefore, SPI boards are typically designed with redundant sensors and fault-tolerant circuits to ensure that they continue to function correctly even in the event of a failure.
•  The SPI board typically includes sensors that measure the rotational speed and position of the turbine shaft. These sensors may be based on different technologies, such as magnetic or optical encoders, and are designed to provide accurate and reliable speed and position measurements.
• Signal Conditioning and Amplification Circuits: The signals from the sensors are typically weak and require amplification and conditioning before the control system can process them. The SPI board includes circuits that perform this function, ensuring that the signals are of sufficient strength and quality to be used by the control system.
• To ensure high reliability, the board often includes redundant sensors. This means that multiple sensors measure the speed and position of the turbine shaft, and the signals from these sensors are compared to ensure consistency. If there is a discrepancy between the signals, the control system can use a voting algorithm to determine the correct value.
• Typically designed with fault-tolerant circuits that can detect and respond to errors or malfunctions in the system. For example, if one of the sensors fails, the control system can automatically switch to a backup sensor, ensuring that the speed and position measurements remain accurate and reliable.
• Include diagnostic features that allow the control system to monitor the board's health and detect faults or malfunctions. These features can include built-in self-tests or diagnostic algorithms that analyze the sensor signals and alert the control system if there are any issues.

Characteristics

• This board comprises 25 integrated circuits.
• Encompasses two transistors. These transistors, labeled as Q1 and Q2, serve distinct functions within the board. Several diodes, clad in varying shades of red bands, are also present on this board.
• Seven test points are strategically positioned to facilitate checks ensuring the proper functionality of the board. A male connector port, is situated on the right side of the board.
• This input board is equipped with a black jumper intended to link the jumper pins, enabling users to modify the board's functions as needed.

WOC is happy to assist you with any of your GE requirements. Please contact us by phone or email for pricing and availability on any parts and repairs.

FREQUENTLY ASKED QUESTIONS

What is DS3800HSPC?
It is a Speed Position Input Board developed by GE.

What components comprise the operator interface?
The operator interface consists of the control insert and a printer housed in a roll-out drawer.

What is the functionality of the control insert?
The control insert features an industrial-grade membrane switch, offering enhanced reliability compared to older switches with hand wiring. It facilitates operations via a sequence involving arming a command by pressing a pad on the membrane switch. This action is acknowledged by a flashing LED and a beep. Subsequently, pressing the execute pad prompts the turbine response and turns the LED on steadily.

How does the membrane switch indicate the command readiness?
When a command is armed by pushing the appropriate pad on the membrane switch, a flashing LED and a beep confirm the command's readiness.