SM35-J-R20 Unitronics Samba 3.5" colour touchscreen HMI and PLC with onboard I/O configurations

Why Choose the Unitronics SM35-J-R20 PLC with Integrated Touchscreen HMI?

The Unitronics SM35-J-R20 is a powerful and compact PLC with integrated colour touchscreen HMI, designed to simplify machine control and industrial automation applications. Part of the highly regarded Unitronics Samba series, it combines a programmable logic controller and operator interface into a single device, reducing wiring, panel space requirements and overall system costs.

Designed specifically for OEMs, machine builders and automation engineers, the SM35-J-R20 provides reliable control functionality alongside a bright 3.5-inch colour touchscreen display. The all-in-one design streamlines installation while delivering intuitive operator interaction, advanced communications and flexible expansion options.

Featuring 12 digital inputs, 8 relay outputs, integrated analogue input capability and a 24 VDC power supply, the SM35-J-R20 is ideally suited for packaging machines, HVAC systems, pumps, material handling equipment and industrial process control applications. Its robust construction and industrial-grade design ensure dependable long-term operation in demanding environments.

Key Advantages

• Integrated PLC and colour touchscreen HMI in one compact unit.
• 3.5-inch TFT colour touchscreen display.
• 12 digital inputs and 8 relay outputs.
• Supports analogue inputs for process monitoring and control.
• Reduces panel space and wiring costs.
• Expandable with Ethernet, RS232/RS485 and CANbus modules.
• Suitable for machine builders, OEMs and industrial automation projects.

Key Features

• Unitronics Samba series PLC + HMI.
• 3.5-inch TFT colour touchscreen display.
• 320 × 240 pixel screen resolution.
• 12 digital inputs.
• 8 relay outputs.
• Up to 2 analogue inputs via configurable input channels.
• Integrated real-time clock.
• MODBUS communication support.
• Expandable communications architecture.
• Programming via Unitronics VisiLogic software.

Technical Specifications

• Manufacturer: Unitronics
• Series: Samba
• Model: SM35-J-R20
• Product type: PLC with integrated touchscreen HMI
• Supply voltage: 24 VDC
• Operating voltage range: 20.4 to 28.8 VDC
• Display size: 3.5 inch TFT colour touchscreen
• Display resolution: 320 × 240 pixels
• Digital inputs: 12
• Analogue inputs: Up to 2 configurable inputs
• Digital outputs: 8 relay outputs
• Relay output rating: 3 A resistive load
• Communication port: RS232
• Optional communications: Ethernet, RS232/RS485, CANbus
• Protection rating: IP65 / NEMA 4X (panel mounted)
• Operating temperature: 0°C to 50°C
• Dimensions (H × W × D): 109 × 114.1 × 68 mm
• Weight: Approx. 210 g

Integrated PLC and HMI for Efficient Automation

The SM35-J-R20 combines advanced PLC functionality with an intuitive touchscreen operator interface, allowing users to monitor, control and optimise machinery from a single platform. This integrated approach reduces hardware costs while improving operator usability and system reliability.

The Samba platform supports data logging, recipe management, PID control, alarms, communication protocols and remote connectivity options, making it suitable for a wide range of industrial automation applications.

Typical Applications

• Packaging and labelling machines.
• HVAC and building management systems.
• Pumps and water treatment equipment.
• Material handling systems.
• Food and beverage processing equipment.
• Industrial process automation.
• OEM machine control systems.

Trusted by Machine Builders Worldwide

Unitronics Samba PLCs are widely used by OEMs and automation engineers who require reliable machine control, integrated operator interfaces and excellent value in a compact industrial controller.