URA-0400O – Unitronics AI4,0~20,4~20mA,12Bits,10R

Why Choose the Unitronics URA-0400O Analogue Input Module?

The Unitronics URA-0400O is a compact analogue current input module designed for the UniStream Remote I/O platform. It provides four analogue current inputs capable of receiving standard industrial signals such as 0–20 mA and 4–20 mA, allowing PLC systems to monitor sensors and process instrumentation with high accuracy.

As part of the UniStream distributed I/O architecture, the URA-0400O enables engineers to install analogue input modules closer to field equipment while maintaining centralised PLC control. This reduces wiring complexity and improves scalability across machines and automation systems.

The module features a slim 12 mm DIN-rail slice design, making it suitable for high-density control panels. Its industrial temperature rating and rugged construction ensure reliable operation in demanding automation environments.

Key Advantages

• 4 analogue current inputs for industrial signal monitoring.
• Supports 0–20 mA and 4–20 mA process signals.
• Designed for the Unitronics UniStream Remote I/O system.
• Compact DIN rail slice module for efficient control panel layout.
• Ideal for distributed automation architectures that reduce wiring.
• Wide industrial temperature range for reliable operation.

Key Features

• Analogue current input module for UniStream Remote I/O.
• 4 single-ended input channels.
• 0–20 mA / 4–20 mA signal range.
• 12-bit analogue resolution.
• 24 V DC field supply (18–32 V operating range).
• Removable 10-pin terminal block for field wiring.
• DIN rail mounting for industrial control cabinets.
• LED indicators for input status diagnostics.

Technical Specifications

• Manufacturer: Unitronics
• Series: UniStream Remote I/O (URA)
• Model: URA-0400O
• Module type: Analogue current input module
• Number of inputs: 4 channels
• Input signal: 0–20 mA / 4–20 mA
• Resolution: 12-bit (approx. 4.88 µA per bit)
• Conversion time: approx. 800 µs for all channels
• Supply voltage: 24 V DC nominal (18–32 V range)
• Input impedance: approx. 121.5 Ω
• Connection type: removable terminal block
• Mounting: DIN rail slice module
• Module width: approx. 12 mm
• Operating temperature: −40 °C to +70 °C
• Protection rating: IP20 / NEMA 1
• Application: Industrial analogue current measurement

Industrial Process Monitoring

Analogue current inputs are widely used in automation systems for monitoring industrial sensors and transmitters. Devices such as pressure transmitters, level sensors, temperature transmitters and flow meters commonly use 4–20 mA signals because they offer high noise immunity and reliable long-distance signal transmission.

Within UniStream remote I/O architectures, modules like the URA-0400O allow PLC systems to collect process data from multiple sensors across machines and production lines while maintaining centralised control and monitoring.

Typical Applications

• Industrial process monitoring and instrumentation.
• Pressure, level and flow transmitter integration.
• Temperature transmitter monitoring systems.
• Distributed PLC automation installations.
• Machine automation and production line monitoring.

Trusted by Automation Engineers

Unitronics UniStream remote I/O modules are widely used by machine builders and automation engineers to create scalable and reliable industrial control systems.