UNIOP MKDR-04-0021 Monochrome LCD (with Contrast Control)

UniOP MKDR-04-0021 is a workstation-class HMI designed for heavy-duty industrial environments.

Unlike standard touchscreen panels, the MKDR series combines a high-contrast text display with a comprehensive tactile keyboard,

providing precise control for operators who work in conditions where touchscreens might be impractical (e.g., using heavy gloves or in high-vibration areas).

Introduction

The MKDR-04-0021 features a 4-line by 40-character LCD display.

It is widely recognized for its “Tactile Feedback” technology, offering a physical response with every button press.

This model serves as a reliable interface for complex PLC systems, allowing for data entry, alarm monitoring, and recipe management through a ruggedized physical keypad.

Technical Parameter Table

Unique Product Description

The MKDR-04-0021 is often referred to as a “Tactile Workstation.”

Its standout feature is the Keyboard Macro Editor, which allows users to program the 45 keys to perform complex local functions—such as shifting pages,

writing to PLC registers, or acknowledging alarms—without requiring additional ladder logic programming in the PLC.

It also features slide-in legends, allowing for complete customization of button labels to match specific machine functions.

Product Advantages and Features

Industrial Reliability: Rated for over 5 million key actuations, ensuring longevity in high-use environments.

Complex Data Handling: Supports up to 1024 prioritized alarms and a historical event list of the last 256 events.

Recipe Management: Dedicated 16 KB of memory for storing up to 255 parameter sets.

Multilanguage Support: Capability to host projects in multiple languages for global deployment.

Universal Connectivity: Links directly to the PLC programming port of over 130 different industrial controller brands.

MKDR-04-0021

Application Cases

Automotive Assembly: Ideal for stations where oil and grime make touchscreens difficult to maintain.

Chemical Processing: Used in areas requiring NEMA 4/12 protection against corrosive atmospheres.

Power Generation: Monitoring genset parameters where high-vibration and electrical noise are present.

Extrusion Machinery: Precise temperature and pressure data entry via the numeric keypad.

Related & Other Models in the Same Series

MKDF-04: A version utilizing a Vacuum Fluorescent Display (VFD) for even higher visibility in dark environments.

MKDR-05: An upgraded model with enhanced memory and expanded communication options.

MKDR-16-TA: A specialized variant featuring a larger tactile keyboard layout.

CP01R-04: A compact alternative for simpler text-only status displays.

Installation and Maintenance

Mounting: Requires a cutout of 292 x 147 mm. The unit is secured with mounting clips; ensure the front gasket is properly aligned to achieve an IP65 seal.

Battery Replacement: Uses a CR2430 3V Lithium battery for the Real-Time Clock (RTC). This is user-replaceable but requires removing the main module from the housing.

Maintenance: The membrane keypad is resistant to most industrial solvents. Clean only with a damp cloth. Check the 2A internal fuse if the unit fails to power up.