DS3820DMVB - Discrete Input Module

SPECIFICATIONS

Part Number: DS3820DMVB
Manufacturer: General Electric
Series: Mark IV
Product Type: Discrete Input Module
Operating temperature: -40 to +65 degrees Celsius
Repair: 3-7 Day
Availability: In Stock
Country of Manufacture: United States (USA)

Functional Description

DS3820DMVB is a Discrete Input Module developed by GE. It is a part of Mark IV control system. Designed to process 125VDC discrete inputs from external devices and field sensors. It enables the control system to monitor, respond, and protect vital turbine operations with speed and reliability.

System Features

• The Mark IV control system is architecturally divided into four main sections to ensure reliability, redundancy, and fault tolerance. The first three sections are known as R, S, and T, collectively referred to as RST. These three sections are functionally identical, yet completely independent processors. Each of them operates autonomously, equipped with its own dedicated inputs, outputs, and power supply. This design ensures that a failure in one section does not compromise the function of the others, providing a high degree of operational reliability.
• The fourth section, referred to as C, stands for Communicator. This section plays a critical role in coordinating the activities of the system. It is connected to the R, S, and T sections via six independent communication lines, allowing for the secure exchange of data. The use of these independent communication paths helps to isolate failures, ensuring that a malfunction or energetic fault in one control processor (R, S, or T) is less likely to impact the others. This strategic separation enhances the system’s overall fault tolerance and minimizes the risk of cascading failures.
• In addition to internal coordination, the C section also manages operator interface functions. It facilitates interaction through membrane switches and a CRT display, enabling monitoring and manual control. Furthermore, in applications where remote control or supervisory functions are required, the C section serves as the communication bridge between the Mark IV system and remote computers, making it a central hub for both local and remote operational oversight.

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

FREQUENTLY ASKED QUESTIONS

What is DS3820DMVB?
It is a high-voltage card developed by General Electrics.

How does the software contribute to control availability?
By enabling real-time fault diagnosis, automated recovery, and seamless reinitialization, the software significantly enhances control availability, supporting continuous and stable turbine operation.

Is the software manually operated or fully automated?
While operator interaction is possible, the software is largely automated, allowing it to perform diagnostics, reinitialization, and recovery without requiring constant manual intervention.