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IO-DI8ACH – Unitronics 220/110VAC 8in Digital module
Unitronics IO-DI8ACH AC digital input expansion module featuring 8 digital inputs supporting 80-250V AC signals for industrial automation and control systems.
£83.30
Why Choose the Unitronics IO-DI8ACH AC Digital Input Expansion Module?
The Unitronics IO-DI8ACH is a specialised AC digital input expansion module designed to extend the input capabilities of compatible Unitronics Vision and M91 PLC systems. Featuring 8 digital AC inputs, the module enables direct connection of high-voltage AC control signals, making it ideal for industrial automation systems operating with 110V AC and 220V AC field devices.
Designed for demanding industrial environments, the IO-DI8ACH eliminates the need for additional signal conversion hardware when monitoring AC-powered switches, relays and control circuits. Its galvanically isolated inputs help improve system protection and operational reliability while ensuring safe integration into industrial control systems.
With 8 AC digital inputs, DIN rail mounting capability and compatibility with Unitronics expansion adapters, the IO-DI8ACH provides a reliable and efficient solution for expanding PLC input capacity in machinery, process control and building automation applications.
Key Advantages
- Provides 8 AC digital inputs for PLC expansion.
- Accepts 110V AC and 220V AC control signals.
- Wide 80-250V AC input range.
- Galvanically isolated inputs improve system protection.
- Direct connection to AC field devices without additional converters.
- Compact DIN rail-mounted design saves control panel space.
- Compatible with selected Unitronics Vision and M91 controllers.
Key Features
- Unitronics IO-DI8ACH digital input expansion module.
- 8 AC digital inputs.
- 80-250V AC input voltage range.
- Suitable for 110V AC and 220V AC systems.
- Galvanic isolation between channels and system bus.
- Communication status indicator.
- Individual input status LEDs.
- DIN rail or panel mounting options.
- Designed for use with Unitronics expansion adapters.
Reliable AC Signal Monitoring for Industrial Automation
The Unitronics IO-DI8ACH is specifically designed for applications where AC control voltages must be monitored directly by a PLC system. By supporting 80-250V AC inputs, the module allows automation engineers to interface with industrial switches, relays, contactors and signalling devices without requiring additional interposing hardware.
Its galvanic isolation and industrial-grade construction provide reliable operation in demanding environments while simplifying system design and reducing installation complexity. The module integrates seamlessly with compatible Unitronics expansion architectures via an I/O adapter interface.
Typical Applications
- Industrial machinery control.
- AC relay monitoring.
- Contactor status monitoring.
- Building management systems.
- HVAC control systems.
- Process automation applications.
- OEM control panels.
- Factory automation systems.
Technical Specifications
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| Signal / Input Range | 120/230 V AC | |
|---|---|---|
| Product Series | Unitronics Vision I/O Expansion | |
| Device Type | Digital I/O Module | |
| Coil / Supply Voltage | 110 V AC | |
| Signal Type / Function | Digital | |
| Number of I/O | 8 | |
| Voltage | 110 V | |
| IP Rating | IP20 | |
| Product type | AC digital input expansion module | |
| Number of inputs | 8 digital inputs | |
| Input type | AC digital | |
| Input voltage range | 80-250V AC | |
| Nominal voltages | 110V AC / 220V AC | |
| Input frequency | 50/60Hz | |
| Galvanic isolation | Yes | |
| Maximum current consumption | 45mA from adapter 5V DC supply | |
| Typical power consumption | 0.2W | |
| Status indicators | RUN LED and input LEDs | |
| Protection rating | IP20 / NEMA 1 | |
| Operating temperature | 0°C to +50°C | |
| Storage temperature | -20°C to +60°C | |
| Humidity | 5% to 95% non-condensing | |
| Dimensions (W × H × D) | 80 × 93 × 60 mm | |
| Weight | Approximately 161 g | |
| Mounting type | 35mm DIN rail or panel mounting |
Frequently Asked Questions
What is the Unitronics IO-DI8ACH used for?
The IO-DI8ACH is an expansion module that adds 8 AC digital inputs to compatible Unitronics PLC systems for monitoring high-voltage AC control signals.
What input voltage range does the module support?
The module accepts AC input voltages from 80V AC to 250V AC, making it suitable for both 110V AC and 220V AC applications.
How many inputs does the IO-DI8ACH provide?
The module provides 8 AC digital inputs for monitoring switches, relays and other AC-powered devices.
Does the module include galvanic isolation?
Yes, the IO-DI8ACH features galvanic isolation between channels, power supply and system bus connections for improved protection and reliability.
How is the IO-DI8ACH installed?
The module can be mounted on a standard 35mm DIN rail or directly onto a control panel using screw mounting.
Trusted by Automation Engineers Worldwide
Unitronics expansion modules are widely used throughout industrial automation systems where reliable signal acquisition, scalable PLC expansion and dependable long-term operation are essential for machine and process control.
