Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
EX-D16A3-RO8 – Unitronics XL-EXP,ADPTER,3AI,8RO
Unitronics EX-D16A3-RO8 XL I/O expansion module with built-in adapter featuring 16 digital inputs, 3 analogue inputs and 8 relay outputs for Vision PLC automation systems.
£263.30
Why Choose the Unitronics EX-D16A3-RO8 XL I/O Expansion Module?
The Unitronics EX-D16A3-RO8 is a versatile XL I/O expansion module with a built-in adapter, designed to extend the capabilities of compatible Unitronics Vision PLC systems. Combining 16 digital inputs, 3 analogue inputs and 8 relay outputs in a single module, it offers an efficient solution for machine builders and automation engineers requiring expanded control and monitoring capabilities.
As part of the Unitronics XL I/O range, the EX-D16A3-RO8 features detachable I/O connectors, integrated PLC communication functionality and the ability to provide power to additional expansion modules. This simplifies system architecture while reducing installation complexity and panel space requirements.
With support for high-speed counting inputs, analogue signal acquisition and relay-based output switching, the EX-D16A3-RO8 is ideal for industrial automation, manufacturing equipment, process control applications and OEM machinery requiring a combination of digital and analogue I/O functions.
Key Advantages
- Combines 16 digital inputs, 3 analogue inputs and 8 relay outputs in one module.
- Built-in adapter enables communication with compatible Unitronics PLCs.
- Supports expansion of automation systems without replacing the controller.
- Includes 2 high-speed counter inputs for pulse and frequency measurement.
- Relay outputs suitable for controlling a wide range of industrial loads.
- Expandable architecture supports additional I/O modules.
- DIN rail mounting simplifies installation and maintenance.
Key Features
- Unitronics EX-D16A3-RO8 XL Expansion Module.
- 16 digital inputs, including 2 high-speed counter inputs.
- 3 analogue inputs supporting current signals.
- 8 relay outputs.
- Built-in PLC communication adapter.
- 24 V DC operation.
- Detachable wiring connectors.
- Supports connection of up to 7 additional expansion modules.
- LED indicators for power, communication and I/O status.
Flexible Expansion for Advanced Automation Systems
The EX-D16A3-RO8 enables automation engineers to increase PLC I/O capacity while maintaining a compact control system design. The integrated adapter simplifies communication with the controller and powers connected expansion modules, reducing overall system complexity.
Its combination of digital, analogue and relay I/O makes it particularly useful in applications where multiple signal types must be managed from a single expansion module. This flexibility helps reduce hardware requirements while improving installation efficiency.
Typical Applications
- Industrial machine automation.
- Packaging and processing equipment.
- Material handling systems.
- Manufacturing production lines.
- Water and wastewater control systems.
- OEM machinery.
- Process monitoring and control.
Technical Specifications
Tick the specs you need, then view products that match.
| Number of I/O | 3 | |
|---|---|---|
| Product Series | Unitronics Vision I/O Expansion | |
| Device Type | Analogue I/O Module | |
| Coil / Supply Voltage | 24 V DC | |
| Digital Inputs | 16 | |
| Digital Outputs | 8 | |
| Analogue I/O | 3 AI / 0 AO | |
| Signal Type / Function | Analogue | |
| Voltage | 24 V | |
| IP Rating | IP20 | |
| Product type | XL I/O Expansion Module with Built-In Adapter | |
| Series | Vision XL Expansion Modules | |
| Digital inputs | 16 | |
| High-speed counters | 2 | |
| Analogue inputs | 3 | |
| Analogue input type | 0-20 mA / 4-20 mA | |
| Relay outputs | 8 | |
| Supply voltage | 24 V DC | |
| Voltage range | 20.4 to 28.8 V DC | |
| Expansion capacity | Up to 7 additional I/O modules | |
| Protection rating | IP20 / NEMA 1 | |
| Mounting type | 35 mm DIN Rail | |
| Dimensions (H × W × D) | Approx. 135 × 80 × 60 mm | |
| Operating temperature | 0°C to +50°C |
Frequently Asked Questions
What is the Unitronics EX-D16A3-RO8 used for?
The EX-D16A3-RO8 is an XL I/O expansion module used to add digital inputs, analogue inputs and relay outputs to compatible Unitronics PLC systems.
How many inputs and outputs does the module provide?
The module provides 16 digital inputs, 3 analogue inputs and 8 relay outputs.
Does the module include high-speed counter functionality?
Yes. Two of the digital inputs can be configured as high-speed counters for pulse and frequency measurement applications.
Can additional expansion modules be connected?
Yes. The built-in adapter can support up to 7 additional expansion modules, depending on system configuration.
How is the EX-D16A3-RO8 mounted?
The module is designed for installation on a standard 35 mm DIN rail within industrial control panels.
Trusted by Automation Engineers Worldwide
Unitronics XL I/O expansion modules are widely used in industrial automation projects where reliable I/O expansion, flexible machine control and scalable PLC architectures are required.
