US5-B5-RA28 Unitronics Unistream 5" HMI and PLC with 14 digital/2 analog inputs, 8 relay and 2 analog outputs

Why Choose the Unitronics US5-B5-RA28 PLC + HMI Controller?

The Unitronics US5-B5-RA28 is a compact and highly versatile PLC and HMI controller from the UniStream Built-in B5 series. Combining a powerful programmable logic controller, a 5-inch colour touchscreen HMI and extensive built-in I/O within a single compact platform, it delivers an efficient solution for industrial automation, machine control and process monitoring applications. The all-in-one architecture simplifies installation while providing powerful control and communication capabilities.

Designed for OEM machine builders, panel builders and automation engineers, the US5-B5-RA28 integrates control, visualisation and I/O into a single device. This reduces panel space requirements, minimises wiring complexity and lowers installation costs while maintaining reliable automation performance for demanding industrial environments.

Featuring a 5-inch WVGA touchscreen display, 14 digital inputs, 2 analogue inputs, 2 temperature inputs, 8 relay outputs and 2 analogue outputs, the US5-B5-RA28 is ideally suited to process automation, utilities control, OEM machinery and industrial monitoring applications requiring both digital and analogue control functions.

Key Advantages

• Integrated PLC, HMI and I/O in one compact controller.
• 5-inch touchscreen interface for intuitive operation.
• Built-in relay outputs for direct industrial load switching.
• Integrated analogue and temperature I/O for process applications.
• Built-in Ethernet communications and remote access support.
• Expandable via UniStream local and remote I/O modules.

Key Features

• Unitronics UniStream Built-in B5 series.
• 5-inch TFT colour touchscreen display.
• 800 × 480 WVGA resolution.
• 14 digital inputs including 2 high-speed counter channels.
• 2 analogue inputs supporting voltage and current signals.
• 2 temperature inputs supporting RTD and thermocouple sensors.
• 8 relay outputs.
• 2 analogue outputs.
• Built-in Ethernet communications.
• USB Host and Mini USB Device connectivity.

Technical Specifications

• Manufacturer: Unitronics
• Series: UniStream Built-in B5
• Model: US5-B5-RA28
• Product type: PLC with integrated HMI
• Display size: 5 inch TFT touchscreen
• Display resolution: 800 × 480 pixels (WVGA)
• Supply voltage: 20.4-28.8 V DC (24 V DC nominal)
• Digital inputs: 14 x 24 V DC sink/source
• High-speed counters: 2 channels up to 90 kHz
• Analogue inputs: 2 x 0-10 V / 0-20 mA, 14-bit
• Temperature inputs: 2 x RTD / Thermocouple inputs
• Relay outputs: 8 x relay outputs
• Analogue outputs: 2 x 0-10 V / ±10 V / 0-20 mA / 4-20 mA
• Memory: 512 MB RAM, 3 GB System ROM, 1 GB User ROM
• Communication ports: Ethernet RJ45, USB Host, Mini USB Device
• Protection rating: IP66 / NEMA 4X front panel
• Mounting type: Panel mounting
• Operating temperature: -20°C to +55°C
• I/O expansion: Up to 2,048 I/O points

Advanced Process Control in a Compact Platform

The Unitronics US5-B5-RA28 combines PLC control, HMI visualisation and integrated I/O within a single hardware platform. Its combination of relay outputs, analogue I/O and temperature inputs makes it particularly suitable for process automation, environmental monitoring and industrial control systems requiring flexible signal handling.

Using UniLogic software, engineers can develop PLC programs, HMI screens, alarms, recipes, communications and data logging functions within a single development environment. The platform supports EtherNet/IP, Modbus TCP, CANopen, MQTT and UniCloud connectivity for modern industrial networking applications.

Typical Applications

• Water and wastewater treatment systems.
• Building management and HVAC control.
• Industrial process automation.
• Food and beverage production equipment.
• Energy management systems.
• OEM machine building projects.
• Remote monitoring applications.
• General industrial automation systems.

Trusted by Automation Professionals Worldwide

Unitronics UniStream controllers are trusted by OEMs, machine builders and automation engineers worldwide for delivering reliable control, powerful communications and scalable automation performance.