URD-3200-4 – Unitronics DI32,Universal,24VDC,40P

Why Choose the Unitronics URD-3200-4 Digital Input Module?

The Unitronics URD-3200-4 is a high-density 32-channel digital input module designed for the UniStream Remote I/O platform. It enables PLC systems to monitor a large number of field signals such as sensors, switches and control contacts operating on 24 V DC industrial control circuits.

The module is installed within a UniStream distributed I/O assembly and communicates with the PLC through an Ethernet-based remote I/O adapter. This distributed architecture allows automation engineers to install I/O modules closer to machines and process equipment, reducing wiring complexity and improving system scalability.

With 32 universal digital inputs, fast signal response and a slim 12 mm DIN-rail housing, the URD-3200-4 provides high-density input monitoring for advanced PLC automation systems and industrial control panels.

Key Advantages

• 32 digital input channels for high-density PLC monitoring.
• Universal sink/source inputs compatible with many industrial sensors.
• Fast response time of approximately 0.2 ms for real-time control applications.
• Compact 12 mm DIN-rail module for high-density control cabinets.
• Optocoupler isolation between field wiring and logic circuitry.
• Designed for scalable distributed automation systems using UniStream Remote I/O.

Key Features

• 32 × digital inputs.
• Nominal input voltage: 24 V DC.
• Operating voltage range: 15–32 V DC.
• Input type: universal sink/source.
• Input response time: approx. 0.2 ms ON/OFF.
• Input impedance: approx. 10.2 kΩ.
• LED indicators for each input channel.
• 40-pin IDC connector for field wiring.
• DIN rail mounting for industrial control panels.

Technical Specifications

• Manufacturer: Unitronics
• Series: UniStream Remote I/O
• Model: URD-3200-4
• Module type: Digital input module
• Inputs: 32 digital inputs
• Input voltage: 24 V DC nominal
• Voltage range: 15–32 V DC
• Input current: approx. 3 mA per input at 32 V DC
• Input delay: approx. 0.2 ms ON / 0.2 ms OFF
• Input impedance: approx. 10.2 kΩ
• Isolation: photocoupler isolation between field and logic circuits
• Connection: 40-pin IDC connector
• Mounting: DIN rail
• Module dimensions: approx. 12 mm × 109 mm × 70 mm
• Operating temperature: −40 °C to +70 °C
• Protection rating: IP20 / NEMA 1
• Weight: approx. 59 g

Distributed PLC Automation

UniStream Remote I/O systems allow engineers to distribute input and output modules throughout machinery while maintaining centralised PLC control through Ethernet communication. A single remote I/O adapter can support dozens of slim I/O modules, allowing flexible expansion of digital and analogue signals across industrial automation systems.

Digital input modules such as the URD-3200-4 are typically used to monitor 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 production 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.