URD-1600-8 – Unitronics DI16,Universal,24VDC,18R

Why Choose the Unitronics URD-1600-8 Digital Input Module?

The Unitronics URD-1600-8 is a compact 16-channel digital input module designed for the UniStream Remote I/O platform. It enables PLC systems to monitor multiple field devices such as sensors, switches and control contacts operating on standard 24 V DC industrial control signals.

Installed within a UniStream distributed I/O assembly, the URD-1600-8 connects to a remote Ethernet adapter that communicates with the PLC controller. This architecture allows I/O modules to be positioned close to machinery or production equipment, reducing wiring complexity while enabling scalable industrial automation systems.

With 16 universal digital inputs, fast signal response and a slim 12 mm DIN-rail form factor, the URD-1600-8 provides high-density input monitoring for modern PLC control panels and machine automation environments.

Key Advantages

• 16 digital input channels for high-density PLC signal monitoring.
• Universal sink/source inputs compatible with a wide range of sensors and switches.
• Fast response time of approximately 0.3 ms for real-time control applications.
• Compact 12 mm DIN-rail module suitable for high-density control cabinets.
• Optocoupler isolation between I/O and logic circuits for improved reliability.
• Designed for distributed PLC architectures using UniStream Remote I/O.

Key Features

• 16 × digital inputs.
• Nominal input voltage: 24 V DC.
• Operating voltage range: 15–32 V DC.
• Input type: universal sink/source inputs.
• Input response time: approx. 0.3 ms ON/OFF.
• LED indicators showing the status of each input channel.
• 18-pin removable terminal block for field wiring.
• DIN rail mounting for industrial control panels.

Technical Specifications

• Manufacturer: Unitronics
• Series: UniStream Remote I/O
• Model: URD-1600-8
• Module type: Digital input module
• Inputs: 16 digital inputs
• Input voltage: 24 V DC nominal
• Voltage range: 15–32 V DC
• Input current: approx. 3 mA per channel
• Input delay: approx. 0.3 ms ON / 0.3 ms OFF
• Input impedance: approx. 14.9 kΩ
• Isolation: optocoupler isolation between field and logic circuits
• Connection: removable 18-pin terminal block
• Mounting: DIN rail
• Module dimensions: approx. 12 mm × 109 mm × 70 mm
• Operating temperature: −40 °C to +70 °C
• Protection rating: IP20 / NEMA 1

Distributed PLC Automation

UniStream Remote I/O systems allow engineers to distribute input and output modules across machines while maintaining central PLC control through Ethernet communication. A single remote adapter can support multiple slim I/O modules, enabling flexible expansion of digital and analogue signals across an industrial automation system.

Digital input modules such as the URD-1600-8 are commonly used to monitor status signals from sensors, limit switches and operator controls, enabling PLC programs to respond to real-time machine conditions.

Typical Applications

• Monitoring industrial sensors and switches.
• Machine status and safety signal detection.
• PLC control panel input expansion.
• Factory automation and process control systems.
• Distributed PLC I/O architectures.

Trusted by Automation Engineers

Unitronics UniStream remote I/O modules are widely used by machine builders and automation engineers to build scalable PLC-based automation systems.