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IO-D16A3-RO16 – Unitronics XL-EXP,16I,3AI,16RO
Unitronics IO-D16A3-RO16 XL I/O expansion module featuring 16 digital inputs, 3 analogue inputs and 16 relay outputs for industrial automation and machine control applications.
£230.57
Why Choose the Unitronics IO-D16A3-RO16 XL I/O Expansion Module?
The Unitronics IO-D16A3-RO16 is a versatile XL I/O expansion module designed to extend the capabilities of compatible Unitronics PLC and OPLC systems. Combining 16 digital inputs, 3 analogue inputs and 16 relay outputs within a single module, it provides a compact and cost-effective solution for machine builders, panel builders and industrial automation engineers.
As part of the Unitronics XL I/O series, the IO-D16A3-RO16 offers enhanced I/O configurations with detachable terminal connectors for simplified installation and maintenance. The module integrates seamlessly with local or remote I/O adapters, allowing flexible expansion of automation systems while maintaining reliable performance in demanding industrial environments.
Featuring high-speed counter functionality, analogue current inputs and robust relay outputs, this module is ideal for applications requiring mixed digital and analogue signal processing, machine control and process automation.
Key Advantages
- Combines 16 digital inputs, 3 analogue inputs and 16 relay outputs in one module.
- Supports high-speed counter (HSC) functionality for fast signal processing.
- Compatible with local and remote Unitronics I/O architectures.
- Detachable terminal connectors simplify installation and servicing.
- Relay outputs provide flexible switching for industrial loads.
- Compact DIN rail-mounted design saves control panel space.
- Ideal for machine automation and process control applications.
Key Features
- Unitronics IO-D16A3-RO16 XL expansion module.
- 16 digital inputs including 2 high-speed counter inputs.
- 3 analogue current inputs.
- 16 relay outputs.
- 24V DC operation.
- Supports PNP or NPN input configuration.
- Detachable wiring connectors.
- Status LEDs for communication and I/O monitoring.
- DIN rail mounting for industrial control panels.
Flexible I/O Expansion for Industrial Automation
The IO-D16A3-RO16 enables automation engineers to expand control systems with a balanced mix of digital, analogue and relay I/O. Its combination of signal acquisition and output control capabilities reduces the need for multiple expansion modules, simplifying system design and reducing panel space requirements.
High-speed counter inputs support applications involving encoders, pulse measurement and frequency monitoring, while analogue inputs allow connection to process transmitters and instrumentation devices. Relay outputs provide dependable switching for industrial loads and control circuits.
Typical Applications
- Industrial machinery control.
- Packaging and assembly equipment.
- Material handling systems.
- Water and wastewater treatment.
- OEM automation panels.
- Process monitoring and control.
- Manufacturing and production systems.
Technical Specifications
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| Number of I/O | 3 | |
|---|---|---|
| Product Series | Unitronics Vision I/O Expansion | |
| Device Type | Analogue I/O Module | |
| Coil / Supply Voltage | 20.4–28.8 V DC | |
| Digital Inputs | 16 | |
| Digital Outputs | 16 | |
| Analogue I/O | 3 AI / 0 AO | |
| Signal Type / Function | Analogue, Digital | |
| Voltage | 24 V | |
| IP Rating | IP20 | |
| Series | XL I/O Expansion Modules | |
| Product type | Digital and analogue I/O expansion module | |
| Digital inputs | 16 | |
| High-speed inputs | 2 HSC inputs | |
| Analogue inputs | 3 | |
| Analogue input type | 0-20mA / 4-20mA | |
| Relay outputs | 16 | |
| Nominal supply voltage | 24V DC | |
| Operating voltage range | 20.4-28.8V DC | |
| Maximum HSC frequency | 30kHz | |
| Protection rating | IP20 / NEMA 1 | |
| Mounting type | 35mm DIN rail | |
| Dimensions (H × W × D) | Approx. 93 × 80 × 60 mm | |
| Status indication | RUN, input and output LEDs |
Frequently Asked Questions
What is the Unitronics IO-D16A3-RO16 used for?
The module expands compatible Unitronics PLC systems with 16 digital inputs, 3 analogue inputs and 16 relay outputs.
Does the module support high-speed counters?
Yes, the IO-D16A3-RO16 includes 2 high-speed counter inputs capable of operating up to 30kHz.
What analogue signals can be connected?
The analogue inputs support current signals including 0-20mA and 4-20mA process instrumentation.
What type of outputs are included?
The module provides 16 relay outputs suitable for switching industrial control loads.
How is the module mounted?
The IO-D16A3-RO16 is designed for installation on a standard 35mm DIN rail within a control cabinet.
Trusted by Automation Professionals Worldwide
Unitronics XL I/O expansion modules are widely used in industrial automation systems where reliable signal acquisition, flexible control and scalable PLC expansion are essential for efficient machine operation.
