We use cookies to make your experience better. To comply with the new e-Privacy directive, we need to ask for your consent to set the cookies. Learn more.
IO-DI8-RO8 – Unitronics 8 in / 8 R.out digital module
MPN: IO-DI8-RO8
Alt. SKU: IODI8RO8
Special Price
£157.08
£130.90
Regular Price
£184.80
Why Choose the Unitronics IO-DI8-RO8 Digital I/O Expansion Module?
The Unitronics IO-DI8-RO8 is a versatile digital input and relay output expansion module designed for use with Unitronics Vision PLC controllers. It expands automation systems by providing additional digital inputs for monitoring sensors and switches, together with relay outputs for controlling external devices within industrial control applications.
The module combines 8 digital inputs with 8 relay outputs, allowing PLC systems to interface with field devices such as proximity sensors, limit switches and pushbuttons while also switching loads including contactors, signal lamps and solenoids. It operates using a 24 V DC nominal input voltage, making it suitable for standard industrial automation systems.
One of the digital inputs can function as a high-speed counter (HSC), enabling measurement of pulse signals up to approximately 5 kHz. The module connects to the PLC via an expansion adapter and can be installed on a 35 mm DIN rail or mounted to a panel within a control cabinet.
Key Features
- 8 digital inputs for monitoring sensors and switches.
- 8 relay outputs for switching external loads.
- 24 V DC nominal input voltage for industrial automation systems.
- Inputs support PNP (source) or NPN (sink) wiring configurations.
- 1 high-speed counter input capable of measuring pulses up to approx. 5 kHz.
- LED indicators show real-time input and output status.
- Compatible with Unitronics Vision PLC expansion architectures.
- DIN-rail or panel mounting for flexible control cabinet installation.
Technical Specifications
- Manufacturer: Unitronics
- Model: IO-DI8-RO8
- Product type: Digital input / relay output PLC expansion module
- Digital inputs: 8 inputs (7 standard + 1 high-speed counter)
- Input type: PNP (source) or NPN (sink)
- Nominal input voltage: 24 V DC
- Supply voltage: 20.4–28.8 V DC (24 V nominal)
- High-speed counter: up to 5 kHz, 16-bit counting
- Outputs: 8 relay outputs (SPST-NO contacts)
- Relay rating: up to 250 VAC / 30 VDC switching
- Output current: up to approx. 3 A resistive load
- Mounting: 35 mm DIN rail or panel mount
- Protection rating: IP20 / NEMA 1
- Operating temperature: 0 °C to 50 °C
- Typical dimensions: approx. 80 × 93 × 60 mm
Typical Applications
- Expansion of PLC input and output capacity.
- Monitoring switches, sensors and limit devices.
- Control of relays, solenoids and signalling devices.
- Machine automation and production equipment.
- Industrial control cabinets using Unitronics Vision PLC platforms.
Frequently Asked Questions
What is the Unitronics IO-DI8-RO8 used for?
The IO-DI8-RO8 expands a PLC system by providing additional digital inputs for sensors and relay outputs for controlling external devices.
How many inputs and outputs does the module provide?
The module provides eight digital inputs and eight relay outputs.
Does the module support high-speed counting?
Yes. One digital input can operate as a high-speed counter capable of measuring pulses up to approximately 5 kHz.
What voltage does the IO-DI8-RO8 operate on?
The module is designed for 24 V DC industrial control systems.
How is the IO-DI8-RO8 installed?
The module can be snap-mounted on a DIN rail or screw-mounted onto a panel within a control cabinet.
Trusted by Automation Engineers
Unitronics Vision expansion modules are widely used in industrial automation systems to extend PLC input and output capacity while maintaining reliable machine monitoring and control.
| Packed Quantity | 1 |
|---|---|
| Manufacturer | Unitronics |
| Manufacturer Part Number | IO-DI8-RO8 |
| Alternative Product SKU | IODI8RO8 |
Write Your Own Review
