DEIF 1044220080E MDR-2 Display Module

The DEIF 1044220080E is a dedicated display module designed for use with MDR-2 multifunctional digital relays. This operator interface provides local visualization of electrical parameters, protection status, and configuration menus, enabling operators and maintenance personnel to monitor and manage power system protection directly at the relay location. The display module attaches to the MDR-2 relay, creating a complete operator station for protection applications.

Display and User Interface

The 1044220080E features a high-contrast graphical LCD display that presents protection relay information in an organized, easy-to-read format. The backlit screen ensures visibility in various ambient lighting conditions. The display shows key electrical parameters including three-phase voltages, currents, frequency, active power, reactive power, and power factor. Protection function status is clearly indicated, with active alarms prominently displayed for operator awareness.

Navigation and Configuration

Intuitive navigation buttons provide access to all relay functions. Operators can scroll through measurement screens to view real-time data. The configuration menu allows authorized personnel to adjust protection parameters, setpoint values, and time delays without requiring a separate programming device. Password protection prevents unauthorized changes to critical protection settings, maintaining system integrity. The menu structure is organized logically, with clear labeling to facilitate efficient operation.

Alarm and Event Management

The display provides comprehensive alarm handling capabilities. Active alarms are shown with clear indication of the alarm type and associated parameters. The event log stores historical events including protection operations, configuration changes, and system events with precise time stamps. Operators can view the event log directly from the display, enabling rapid fault analysis without external tools. Alarms can be acknowledged locally, with acknowledgment status communicated to the MDR-2 relay.

Integration with MDR-2

The display module connects directly to the MDR-2 relay via a dedicated interface, requiring no additional wiring or configuration. The module receives all necessary data from the relay, including measured values, protection status, and event information. The interface is designed for reliable operation in industrial environments, with robust connectors ensuring secure connections. When multiple MDR-2 relays are installed in a system, each relay can be equipped with its own display for local operation.

Technical Specifications

• Display Type: Graphical LCD, 128 x 64 pixels

• Backlight: LED with adjustable intensity

• User Interface: Navigation buttons with tactile feedback

• Languages: Multiple languages selectable

• Connection: Dedicated interface to MDR-2 relay

• Power Supply: Derived from MDR-2

• Operating Temperature: -25°C to +70°C

• Storage Temperature: -40°C to +85°C

• Protection Rating: IP40 (front panel)

Applications

The 1044220080E display module is used in all applications where local operator access to MDR-2 relay information is required:

• Generator protection panels

• Switchgear and distribution boards

• Motor control centers

• Power plant protection systems

• Industrial facility electrical rooms

• Marine and offshore electrical installations

Installation

Installation involves attaching the display module to the MDR-2 relay. The module mounts directly to the relay housing, creating a compact integrated unit. For applications requiring remote mounting, optional extension cables allow the display to be positioned at a convenient operator location, separate from the relay which may be mounted inside a panel. The display module is designed for flush mounting, providing a clean panel appearance.

Environmental Specifications

The display module is designed for reliable operation in industrial and marine environments. It withstands the vibration, temperature variations, and humidity conditions typical of electrical rooms and control panels. The front panel provides adequate protection for indoor installations, with robust construction ensuring long-term reliability.