JZ20-R31 Unitronics JAZZ OPLC,Di 2X16,20/11IO,AN,USB

Why Choose the Unitronics JZ20-R31 Jazz PLC with Integrated HMI?

The Unitronics JZ20-R31 is a compact micro PLC with integrated textual HMI designed for small to medium industrial automation tasks. As part of the Unitronics Jazz™ series, this controller combines PLC logic, operator interface and built-in I/O within a single panel-mounted unit, making it an efficient and cost-effective solution for OEM machinery and compact control systems.

The controller features a 2 × 16 character LCD display with a built-in keypad for operator interaction. This allows operators to monitor system status, adjust parameters and view alarms directly from the device without the need for a separate HMI panel. The Jazz series integrates PLC control and operator interface in a single device, reducing wiring complexity and installation time.

The JZ20-R31 provides extensive onboard I/O including 18 digital inputs, 2 configurable digital/analogue inputs, 2 analogue inputs and 11 relay outputs. This configuration allows the controller to manage sensors, switches, analogue signals and actuators in compact automation systems.

The controller operates on a 24 V DC power supply and includes built-in communication support including MODBUS, with programming performed through the free Unitronics U90™ Ladder software. These features make the Jazz PLC series widely used for small machine automation, HVAC systems and industrial monitoring applications.

Key Features

• All-in-one PLC and textual HMI with integrated keypad.
• 2 × 16 character LCD display for system monitoring.
• 18 digital inputs for switches and sensors.
• 2 configurable digital / analogue inputs.
• 2 analogue inputs for process signals.
• 11 relay outputs for switching loads.
• Supports MODBUS communication.
• High-speed counter inputs for fast signal detection.
• Programming via Unitronics U90 Ladder software.

Technical Specifications

• Manufacturer: Unitronics
• Model: JZ20-R31
• Series: Jazz™ OPLC
• Display: 2 × 16 character LCD
• Keypad: 16 keys including programmable function keys
• Digital inputs: 18
• Digital / analogue inputs: 2 configurable inputs
• Analogue inputs: 2
• Relay outputs: 11
• High-speed counters: up to 10 kHz
• Power supply: 24 V DC
• Typical power consumption: approx. 2.8 W
• Battery backup: approx. 7 years for RTC and system data
• Operating temperature: 0 °C to 50 °C
• Protection rating: IP65 when panel mounted

Unitronics Jazz Micro-PLC Platform

The Unitronics Jazz PLC series is designed for cost-effective automation where integrated control and operator interface are required. These controllers combine PLC functionality, HMI display and I/O into a single compact unit, offering many capabilities typically found in larger PLC systems such as PID control, communication protocols and data monitoring.

The U90 Ladder programming environment allows engineers to develop ladder logic, configure HMI messages and manage system functions within a single application project.

Typical Applications

• Small machine automation.
• Packaging and assembly equipment.
• HVAC and building automation.
• Pump and compressor control.
• Industrial monitoring and control panels.

Trusted by Machine Builders

Unitronics Jazz PLC controllers are widely used by OEM machine builders and automation engineers for compact automation systems combining PLC logic and operator interface in a single device.