JZ20-J-R31 Unitronics Jazz Textual display and keybord HMI and PLC with upto 40 onboard I/Os

Why Choose the Unitronics JZ20-J-R31 Jazz PLC + HMI?

The Unitronics JZ20-J-R31 is a compact and cost-effective all-in-one PLC and HMI controller from the popular Unitronics Jazz series. Designed for small to medium-sized automation projects, this powerful micro-PLC combines a programmable logic controller, operator interface and onboard I/O into a single compact unit, helping reduce panel space, wiring complexity and overall project costs.

Featuring a built-in text-based LCD display, integrated keypad and extensive onboard I/O, the JZ20-J-R31 provides a complete control solution for machinery, process control, HVAC systems, pumping stations and OEM equipment. Its user-friendly programming environment and integrated HMI capabilities make it ideal for applications requiring reliable control without the complexity of larger PLC systems.

With 18 digital inputs, 4 analogue inputs, 11 relay outputs, integrated communications and support for up to 40 onboard I/O points, the JZ20-J-R31 delivers impressive functionality within a compact and economical platform.

Key Advantages

• Integrated PLC and HMI in a single device.
• Compact design reduces panel space and installation costs.
• 18 digital inputs and 11 relay outputs onboard.
• Built-in text display and keypad for operator interaction.
• Supports analogue inputs for process control applications.
• Integrated Mini-USB communications port.
• Licence-free Unitronics U90 Ladder programming software.
• Suitable for OEM machinery and standalone automation systems.

Key Features

• Unitronics Jazz Series.
• Micro PLC with integrated HMI.
• 2-line, 16-character LCD display.
• 16-key keypad with 10 user-labelling keys.
• 18 digital inputs.
• 4 analogue inputs (2 voltage and 2 current).
• 11 relay outputs.
• 48 KB ladder program memory.
• Built-in real-time clock.
• Mini-USB programming port.
• Supports Modbus communications.
• Panel mounting with IP65 front protection.

Technical Specifications

• Manufacturer: Unitronics
• Series: Jazz
• Model: JZ20-J-R31
• Product type: PLC with integrated HMI
• Supply voltage: 24 VDC
• Operating voltage range: 20.4 to 28.8 VDC
• Typical power consumption: 2.8 W
• Digital inputs: 18
• Analogue inputs: 4
• Relay outputs: 11
• High-speed inputs: 2 × 10 kHz
• Display: 2-line monochrome LCD
• Keyboard: 16 keys
• Program memory: 48 KB ladder memory
• Communications: Mini-USB, RS232, RS485, Modbus
• Real-time clock: Built-in
• Battery backup: Up to 7 years typical
• Protection rating: IP65 front mounted
• Operating temperature: 0°C to +50°C
• Dimensions (H × W × D): 117 × 147.5 × 46.6 mm

All-in-One Automation Control Solution

The JZ20-J-R31 combines PLC functionality, operator interface and onboard I/O within a single compact unit. This integrated approach simplifies machine design, reduces installation time and lowers component costs while providing reliable control and monitoring capabilities.

Its built-in display and keypad allow operators to view machine status, modify parameters and access system information without requiring a separate HMI. Combined with flexible I/O and communication capabilities, the controller is well suited to standalone automation systems and OEM equipment.

Typical Applications

• Packaging machinery.
• HVAC and building automation.
• Pump control systems.
• Water and wastewater applications.
• Material handling equipment.
• Small manufacturing machines.
• OEM automation systems.
• Standalone process control applications.

Trusted by Machine Builders Worldwide

Unitronics Jazz controllers are widely used by OEMs and automation engineers who require a compact, reliable and cost-effective PLC and HMI solution with integrated I/O and operator control functionality.