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IO-RO8 – Unitronics 8 relay outputs module
MPN: IO-RO8
Alt. SKU: IORO8
Special Price
£130.31
£108.59
Regular Price
£153.30
Why Choose the Unitronics IO-RO8 Relay Output Expansion Module?
The Unitronics IO-RO8 is a compact 8-channel relay output expansion module designed for use with compatible Unitronics OPLC and Vision™ series PLC controllers. It allows engineers to expand PLC output capacity by adding additional relay outputs for controlling industrial loads such as contactors, solenoid valves, lamps and motors.
The module integrates into Unitronics modular automation systems via an expansion adapter, allowing multiple modules to be connected and configured as part of a scalable PLC architecture. This enables automation systems to increase the number of available outputs without replacing the main controller.
The IO-RO8 provides eight SPST-NO relay outputs capable of switching both AC and DC loads. Relay outputs offer galvanic isolation and are particularly suitable for industrial equipment that requires reliable switching of higher voltages or mixed load types.
Key Features
- 8 relay outputs for controlling industrial devices.
- Designed for Unitronics Vision and OPLC PLC systems.
- SPST normally-open relay contacts supporting AC or DC switching.
- 24 V DC module power supply.
- LED indicators for each output channel.
- DIN-rail or screw mounting for industrial panels.
- Expandable architecture for scalable PLC I/O systems.
Technical Specifications
- Manufacturer: Unitronics
- Model: IO-RO8
- Type: Relay output expansion module
- Number of outputs: 8 relay outputs
- Relay contact type: SPST-NO
- Maximum switching current: 5 A resistive load
- Maximum inductive load: approx. 1 A
- Switching voltage: up to 230 VAC or 24 VDC
- Supply voltage: 24 V DC (20.4 – 28.8 V DC operating range)
- Status indicators: LED for each output
- Mounting: 35 mm DIN rail or screw mount
- Dimensions: approx. 80 × 93 × 60 mm
- Operating temperature: 0 °C to 50 °C
- Protection rating: IP20
Modular PLC I/O Expansion
Unitronics PLC systems support modular I/O expansion, allowing engineers to build flexible automation architectures. By adding modules such as the IO-RO8, systems can increase output capacity without redesigning the entire control system.
Relay outputs provide strong electrical isolation and are ideal for switching higher-power loads or mixed AC/DC devices, making them a common choice in industrial automation environments.
Typical Applications
- Industrial machine automation.
- Motor starters and contactor control.
- Solenoid valve and actuator switching.
- Signal lamps and alarm outputs.
- OEM automation equipment and control panels.
Frequently Asked Questions
What is the Unitronics IO-RO8 module used for?
The IO-RO8 is an expansion module that adds eight relay outputs to compatible Unitronics PLC controllers.
What is the difference between IO-RO8 and IO-RO8L?
The IO-RO8 operates from a 24 V DC supply, while the IO-RO8L operates from a 12 V DC supply. Both modules provide eight relay outputs.
What loads can the relay outputs control?
The relay outputs can switch loads up to approximately 5 A for resistive loads and can control AC or DC devices such as contactors, lamps and valves.
How is the IO-RO8 installed?
The module can be mounted on a standard DIN rail or screw-mounted inside an industrial control panel.
Trusted by Automation Engineers
Unitronics modular I/O expansion modules are widely used by machine builders and system integrators to create scalable PLC control systems for industrial automation.
| Packed Quantity | 1 |
|---|---|
| Manufacturer | Unitronics |
| Manufacturer Part Number | IO-RO8 |
| Alternative Product SKU | IORO8 |
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