DS3800HRRB1B - Relay Output Board

SPECIFICATIONS

Part No.: DS3800HRRB1B
Manufacturer: General Electric
Country of Manufacture: United States(USA)
Product Type: Relay Output Board
Series: Mark IV

Functional Description

DS3800HRRB1B is a Relay Output Board developed by GE. It is a part of Mark IV control system. Relay Output Board is used to interface low-voltage control circuits with high-power electrical devices. It consists of multiple electromechanical or solid-state relays that act as switches, allowing control signals to safely operate heavy loads such as motors, solenoids, and alarms. The board receives input signals from a controller and converts them into electrical outputs that can activate or deactivate connected equipment.

Memory Components

The HRRB1B1A variant is equipped with a total of sixteen EEPROMs and EPROMs, which serve as memory storage components. The EEPROM (Electrically Erasable Programmable Read-Only Memory) allows for encoding only once, making it ideal for storing critical firmware that should not be frequently modified. On the other hand, EPROMs (Erasable Programmable Read-Only Memory) can be encoded multiple times as needed, providing greater flexibility in programming and updating system data.

LED Indicators and Diodes

For status monitoring and diagnostics, the board includes:

• Eight white LEDs
• Eight red LEDs
• One yellow LED

These LEDs help indicate different operational states, faults, or system responses. Additionally, the board is equipped with four silver diodes, which regulate electrical flow and provide protection against voltage spikes.

Crystal Oscillators and Structural Design

• It contains eight crystal oscillators, recognizable by their shiny rectangular casings. These oscillators generate a precise electrical signal at a set frequency, ensuring stable timing and synchronization for various board functions.
• Structurally, the board is divided into seven barriers to organize components effectively and minimize electrical interference. It also houses approximately seventy voltage regulators, which help maintain consistent power levels across different circuits.
• To secure the board within its existing setup, it features four contact points, one positioned at each corner. Additionally, each component is labeled, allowing for easier identification and troubleshooting.

Auxiliary Display

A critical component of the Operator Interface Module, the Auxiliary Display serves as a backup CRT (Cathode Ray Tube) display, located in the upper right corner of the interface panel. This display provides operators with real-time system data and alarm notifications, derived from any of the four control panel computers C, R, S, T. The Auxiliary Display operates in two main modes:

• List Mode – Allows the operator to view key system parameters.
• Alarm Mode – Enables the operator to view and acknowledge active alarms.

It consists of a digital display, computer status indicators, and two groups of switches. To facilitate its use, an instruction plate with a magnetic backing is included, allowing it to be attached directly to the panel front for quick reference. 

Our experts can assist you with your GE Speedtronic Mark IV control requirements at any time. We go above and beyond to ensure our customers' satisfaction. We want your machinery or facility to be operating at peak efficiency. We are here to assist you. If you require any additional information, please contact WOC.

Frequently Asked Questions

What is DS3800HRRB1B?
It is a Relay Output Board under the Mark IV series.

What memory components does the board contain?
It is equipped with sixteen EEPROMs and EPROMs. Only one EEPROM can be encoded, while EPROMs can be encoded multiple times as required.

What LEDs and indicators are present on the board?
The board features eight white LEDs, eight red LEDs, and one yellow LED, which provide real-time status indications for system monitoring and diagnostics.

How is the board designed for durability and stability?
The board is divided into seven barriers and contains approximately seventy regulators, helping to maintain voltage stability. Additionally, it has four silver diodes for electrical protection and four contact points for secure mounting.