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IO-DI16 – Unitronics 16 digital inputs module
Unitronics IO-DI16 digital input expansion module featuring 16 digital inputs, PNP/NPN compatibility and integrated 5kHz high-speed counter functionality for industrial automation systems.
£102.64
Why Choose the Unitronics IO-DI16 Digital Input Expansion Module?
The Unitronics IO-DI16 is a reliable digital input expansion module designed to extend the input capabilities of compatible Unitronics PLC and OPLC control systems. Featuring 16 digital inputs arranged across two input groups, the module provides a cost-effective solution for machine builders, panel manufacturers and automation engineers requiring additional field input connectivity.
Designed for industrial automation environments, the IO-DI16 supports both PNP (source) and NPN (sink) input configurations, providing installation flexibility across a wide range of control systems. Its compact design allows easy integration into existing control panels while maintaining dependable performance in demanding industrial applications.
With 24V DC digital inputs, DIN rail mounting capability and an integrated high-speed counter input, the IO-DI16 is ideal for monitoring switches, sensors, limit devices and pulse signals within automated machinery and process control systems.
Key Advantages
- Provides 16 additional digital inputs for PLC expansion.
- Supports both PNP and NPN wiring configurations.
- Includes high-speed counter functionality on Input 15.
- Compact DIN rail-mounted design saves panel space.
- Simple integration with compatible Unitronics PLC systems.
- Suitable for machine control, monitoring and automation applications.
- Status LEDs simplify diagnostics and commissioning.
Key Features
- Unitronics IO-DI16 digital input expansion module.
- 16 digital inputs in two groups.
- 24V DC input operation.
- PNP (source) or NPN (sink) input configuration.
- Integrated 5kHz high-speed counter input.
- 16-bit counter resolution.
- Communication and input status LED indicators.
- DIN rail or panel mounting options.
- Compatible with selected Unitronics Vision and OPLC systems.
Reliable Digital Input Expansion for Industrial Automation
The Unitronics IO-DI16 enables automation engineers to expand PLC input capacity without replacing existing controllers. By adding sixteen digital inputs, the module provides a simple solution for integrating additional sensors, switches, push buttons, proximity devices and other field equipment into industrial control systems.
Its integrated high-speed counter functionality makes it suitable for pulse counting, frequency measurement and encoder-related applications, while flexible PNP/NPN compatibility simplifies installation across different machine architectures.
Typical Applications
- Industrial machinery control.
- Packaging and assembly equipment.
- Conveyor and material handling systems.
- Production line monitoring.
- OEM automation panels.
- Sensor and switch monitoring.
- Pulse counting and frequency measurement.
Technical Specifications
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| Signal / Input Range | 24 V DC | |
|---|---|---|
| Product Series | Unitronics Vision I/O Expansion | |
| Device Type | Digital I/O Module | |
| Digital Inputs | 16 | |
| Signal Type / Function | Digital | |
| Number of I/O | 16 | |
| IP Rating | IP20 | |
| Product type | Digital input expansion module | |
| Number of inputs | 16 digital inputs | |
| Input type | PNP (source) or NPN (sink) | |
| Nominal input voltage | 24V DC | |
| Input current | 6mA @ 24V DC | |
| Response time | 10ms typical | |
| High-speed counter | Input 15 | |
| Counter frequency | Up to 5kHz | |
| Counter resolution | 16-bit | |
| Maximum current consumption | 75mA | |
| Protection rating | IP20 / NEMA 1 | |
| Operating temperature | 0°C to +50°C | |
| Mounting type | DIN rail or panel mounting | |
| Dimensions (W × H × D) | 80 × 93 × 60 mm | |
| Weight | Approximately 141 g |
Frequently Asked Questions
What is the Unitronics IO-DI16 used for?
The IO-DI16 is a digital input expansion module that adds 16 additional digital inputs to compatible Unitronics PLC and OPLC systems.
How many inputs does the module provide?
The module provides 16 digital inputs arranged across two input groups.
Does the IO-DI16 support both PNP and NPN sensors?
Yes, the module supports both PNP (source) and NPN (sink) input wiring configurations.
Does the module include high-speed counting functionality?
Yes, Input 15 can operate as a 5kHz high-speed counter with 16-bit resolution.
How is the module installed?
The IO-DI16 can be mounted on a standard DIN rail or directly onto a mounting plate within a control panel.
Trusted by Automation Engineers Worldwide
Unitronics digital expansion modules are widely used throughout industrial automation systems where dependable signal acquisition, scalable PLC expansion and reliable long-term operation are essential.
