Phoenix Contact MINI MCR-2-UI-I-OLP Loop Isolator

Phoenix Contact MINI MCR-2-UI-I-OLP Loop-Powered Isolator

The Phoenix Contact MINI MCR-2-UI-I-OLP loop-powered isolator is a compact solution for reliable signal separation in control systems. It isolates and converts both unipolar and bipolar analog signals into standard 4–20 mA outputs, ensuring accurate data transmission even in noisy industrial environments. Its design eliminates the need for an external power supply, reducing wiring complexity. With configurable DIP switches and a slim 6.2 mm housing, it integrates seamlessly into tight control cabinets. This isolator provides a dependable way to maintain measurement accuracy and protect sensitive equipment in demanding automation applications.

Engineered for modern automation, the Phoenix Contact MINI MCR-2-UI-I-OLP offers more than basic isolation. By drawing its power directly from the current loop, it simplifies installation and reduces operating costs. Its ability to handle a wide range of voltage and current inputs makes it highly adaptable for use with sensors, PLC modules, and distributed control systems. Strong insulation and effective filtering protect against overvoltage and electrical noise, improving long-term reliability. The result is safer signal integrity, extended equipment life, and stable process control across industries such as manufacturing, energy, and transportation.

Why Phoenix Contact MINI MCR-2-UI-I-OLP?
The MINI MCR-2-UI-I-OLP is chosen for its ability to combine compact design, loop-powered operation, and versatile input handling in one device. It saves panel space, eliminates extra power supplies, and ensures stable, interference-free signal transmission. With its configurable DIP switches and robust insulation, this isolator adapts easily to diverse industrial needs while providing the confidence of long-term reliability in critical automation processes.

What problem does it solve?
In noisy industrial environments, analog signals are prone to distortion, interference, or ground loops that compromise data accuracy. The MINI MCR-2-UI-I-OLP solves this challenge by providing galvanic isolation, precise signal conversion, and noise filtering. It ensures control systems receive clean, standardized 4–20 mA signals, reducing downtime, safeguarding connected equipment, and enhancing process safety. This makes it invaluable wherever measurement integrity is essential for smooth operations.

Key Features & Specifications – Phoenix Contact MINI MCR-2-UI-I-OLP : 2902061

Download MINI MCR-2-UI-I-OLP 2902061 Datasheet

Commercial Data – Phoenix Contact MINI MCR-2-UI-I-OLP : 2902061

The Applications 

1. Eliminating Ground Loops in Remote Sensor Networks

In large-scale facilities, sensors installed across wide areas often experience interference due to ground potential differences. These inconsistencies can distort measurements and disrupt control signals. By integrating the MINI MCR-2-UI-I-OLP in each loop, the isolator breaks unwanted ground paths and delivers clean, stable 4–20 mA signals. Since it powers itself from the loop, no additional wiring or supply is required. The result is accurate, interference-free data transmission that keeps monitoring systems dependable and reduces costly troubleshooting.

2. Safe Signal Transmission Across Hazardous Zones

Industries such as chemical plants or refineries must move analog signals safely from field devices located in potentially explosive areas to centralized control rooms. The MINI MCR-2-UI-I-OLP provides reinforced isolation that prevents surges or faults from traveling through the system. Its compact form and DIN-rail mounting make it easy to integrate into protective enclosures. This ensures sensitive electronics remain shielded while allowing operators to maintain reliable process control in compliance with strict safety requirements.

3. Preserving Signal Quality Near Power-Driven Equipment

Production environments with motors, drives, and heavy switching equipment generate significant electrical noise that can affect analog sensors. The MINI MCR-2-UI-I-OLP addresses this by filtering and isolating the signal before it reaches the PLC or control system. Even under strong interference, the isolator maintains a highly accurate 4–20 mA output with minimal transmission error. This guarantees consistent process data, reduces the risk of false alarms, and helps keep automated systems running smoothly in harsh electrical conditions.

4. Simplifying Retrofit Projects with Minimal Wiring

When upgrading or expanding older automation systems, engineers often face challenges in adapting new instruments without reworking the entire wiring layout. The MINI MCR-2-UI-I-OLP is an ideal retrofit solution because it draws power directly from the loop and offers easy DIP switch configuration. This flexibility allows existing sensors to be quickly adapted to modern controllers without additional power lines. The result is faster system upgrades, reduced installation effort, and a cost-effective way to extend the life of legacy equipment.

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