The Pilz PNOZ m EF 4DI4DOR (772143) is an expansion module designed for use with the PNOZmulti 2 small controller system, enabling greater flexibility and scalability in safety applications. By adding additional inputs and relay outputs, this module makes it possible to tailor safety architectures to the specific needs of machines and plants, while maintaining compliance with international safety standards.

This expansion module provides 4 digital inputs (DI), each operating at 24 V DC in accordance with EN 61131-2 Type 1 standards. This ensures robust compatibility with industrial safety devices such as emergency stop buttons, safety gates, enabling switches, and light barriers. The inputs are designed for reliable signal processing, ensuring accurate monitoring of protective equipment in safety-critical applications.

In addition to inputs, the PNOZ m EF 4DI4DOR is equipped with 4 relay outputs (DOR). Unlike semiconductor outputs, the relay-based design provides galvanic isolation and supports switching of higher currents, making it ideal for directly controlling actuators such as contactors, drives, and solenoids. This makes the module particularly well-suited for applications where electromechanical switching is preferred or where electrical isolation between circuits is required.

The module draws its internal voltage directly from the PNOZmulti 2 base unit, simplifying wiring and reducing installation effort. It is powered via UINT1 (DC supply), ensuring stable and reliable operation. By sourcing power from the base unit, the PNOZ m EF 4DI4DOR integrates seamlessly into existing safety systems without requiring separate supply arrangements, supporting efficient commissioning and system design.

Built with modularity in mind, the PNOZ m EF 4DI4DOR features a slim and compact housing optimised for DIN-rail mounting, conserving valuable space in control cabinets. The plug-in modular design of the PNOZmulti 2 platform allows engineers to quickly expand or reconfigure systems as production requirements evolve, offering future-proof adaptability in dynamic industrial environments.

Applications for this module are broad, ranging from packaging and automotive production to robotics and process automation. Its combination of four inputs and four relay outputs makes it particularly useful in scenarios where multiple safety devices must be monitored and where robust, isolated switching of actuators is required.

In summary, the Pilz PNOZ m EF 4DI4DOR (772143) is a versatile expansion module that enhances the capability of the PNOZmulti 2 safety system by providing additional inputs and galvanically isolated relay outputs. With its 24 V DC input compliance, electromechanical switching, and seamless integration with base units, it offers a reliable, flexible, and future-proof solution for safeguarding modern industrial machinery and processes.