Weidmuller UR20-4DO-P 4-Channel Digital Output Module

The Applications

1. Precision Actuator Control in Automated Packaging Lines
In modern packaging machinery, accurate control of solenoid valves, pushers, and indicator lamps is critical to maintaining cycle speed and product consistency. The UR20-4DO-P is installed close to the machine to switch DC actuators with minimal delay. Its fast response supports precise timing for sealing and sorting operations, while built-in short-circuit protection safeguards outputs if a coil or cable fails. The narrow module width allows high I/O density in compact cabinets, helping machine builders add functionality without increasing enclosure size or system complexity.

2. Reliable Signal and Brake Control in Conveyor Systems
Conveyor and intralogistics systems depend on dependable digital outputs to manage motor brakes, warning lights, and zone indicators distributed along long transport lines. The UR20-4DO-P enables decentralized output control near each conveyor section, reducing wiring distances and installation effort. Automatic recovery after overload events helps prevent minor electrical faults from causing extended downtime. Electrical isolation improves resistance to interference generated by motors and drives, ensuring stable switching performance in electrically noisy industrial environments.

3. Valve and Alarm Switching in Compact Process Skids
Process skids used in utilities, water treatment, or dosing systems require compact yet reliable control of valves and alarm indicators. The UR20-4DO-P supports both inductive and resistive loads, allowing a single module to control pneumatic valves and visual status signals. Clear LED status indication simplifies commissioning and fault diagnosis during maintenance. Support for common wiring methods reduces engineering effort, enabling system integrators to build standardized, repeatable skid designs that are easy to deploy and service across multiple sites.

4. Scalable Output Control in Modular Machine Concepts
Modular production machines are designed to evolve as manufacturing needs change, requiring flexible and expandable I/O solutions. The UR20-4DO-P is used within individual machine modules to control local actuators such as clamps, ejectors, and signal lamps. Its modular architecture allows additional output channels to be added without redesigning the control system. High switching capability supports dynamic machine functions, while robust protection features help ensure long-term reliability as machine modules are added, moved, or reconfigured.