SM43-J-RA22 Unitronics Samba 4.3" colour touchscreen HMI and PLC with onboard I/O configurations

Why Choose the Unitronics SM43-J-RA22 PLC with Integrated Touchscreen HMI?

The Unitronics SM43-J-RA22 is a powerful and compact PLC with integrated colour touchscreen HMI, designed for machine automation, process control and industrial monitoring applications. As part of the advanced Unitronics Samba series, it combines a programmable logic controller, operator interface and onboard I/O into a single device, helping reduce hardware costs, simplify panel design and accelerate project deployment.

Designed for OEM machine builders, control panel manufacturers and automation engineers, the SM43-J-RA22 provides advanced control functionality alongside a high-resolution 4.3-inch TFT colour touchscreen. The all-in-one design enables both PLC programming and HMI development within a single software environment, simplifying engineering, commissioning and maintenance.

Featuring 12 digital inputs, 2 analogue inputs, 2 PT100/thermocouple inputs, 8 relay outputs and 2 analogue outputs, the SM43-J-RA22 is ideal for packaging equipment, HVAC systems, water treatment plants, process control machinery and OEM automation applications. The controller operates from a 24 VDC power supply and supports optional Ethernet, RS485 and CANbus communications.

Key Advantages

• Integrated PLC and colour touchscreen HMI in a single compact platform.
• 4.3-inch TFT colour touchscreen display with high-resolution graphics.
• 12 digital inputs and 8 relay outputs.
• Built-in analogue and temperature sensing capability.
• 2 analogue outputs for process control applications.
• Supports Ethernet, RS232/RS485 and CANbus expansion modules.
• Reduces panel space, wiring and installation costs.

Key Features

• Unitronics Samba PLC + HMI platform.
• 4.3-inch TFT colour touchscreen display.
• 480 × 272 pixel resolution.
• 12 digital inputs including high-speed counter input.
• 2 analogue inputs.
• 2 PT100 / thermocouple inputs.
• 8 relay outputs.
• 2 analogue outputs.
• USB programming port.
• MODBUS communication support.
• Real-time clock with battery backup.
• Programming via Unitronics VisiLogic software.

Technical Specifications

• Manufacturer: Unitronics
• Series: Samba PLC + HMI
• Model: SM43-J-RA22
• Product type: PLC with integrated touchscreen HMI
• Supply voltage: 24 VDC
• Operating voltage range: 20.4 to 28.8 VDC
• Display size: 4.3-inch TFT colour touchscreen
• Display resolution: 480 × 272 pixels
• Digital inputs: 12
• Analogue inputs: 2
• PT100 / Thermocouple inputs: 2
• Relay outputs: 8
• Analogue outputs: 2
• Communication: USB, optional Ethernet, RS232/RS485 and CANbus
• Protection rating: IP66 / NEMA 4X front panel
• Operating temperature: 0°C to 50°C
• Dimensions (H × W × D): 136 × 105.1 × 61.3 mm
• Weight: Approx. 365 g

Advanced Automation and Process Control

The SM43-J-RA22 is designed for applications requiring integrated machine control, process monitoring and operator interaction. With built-in analogue inputs, temperature measurement capability and analogue outputs, the controller can directly interface with sensors, transmitters, valves and other process devices without additional hardware.

Using Unitronics VisiLogic software, engineers can create PLC logic and HMI applications within a single programming environment. Features such as data logging, alarm management, PID control, recipe handling, remote access and industrial communications help improve productivity while reducing engineering effort.

Typical Applications

• Packaging and assembly machinery.
• HVAC and building automation systems.
• Water treatment and pumping stations.
• Food and beverage processing equipment.
• Industrial process control systems.
• Material handling and conveyor automation.
• OEM machine building projects.

Trusted by Automation Engineers Worldwide

Unitronics Samba controllers are widely deployed by OEMs, system integrators and automation professionals who require reliable machine control, advanced touchscreen operation and flexible communications in a compact industrial controller platform.