The Beckhoff EJ2918 EtherCAT Plug-in Module is a compact and powerful safety I/O solution designed for use in modular machine platforms. As part of Beckhoff’s EJ plug-in series, it is intended for mounting on a signal distribution board, where it provides 8 safe digital outputs for switching 24 V DC loads directly in the field. With TwinSAFE and TwinSAFE Logic integration, it enables decentralised implementation of certified safety functions within EtherCAT networks.

Each of the 8 outputs can switch loads up to 0.5 A, making the module suitable for controlling safety-related actuators such as contactors, safety relays, indicator lamps, or brake circuits. The outputs are designed to handle the typical requirements of industrial safety systems, with integrated fault detection ensuring reliability even under demanding conditions.

One of the EJ2918’s distinguishing features is its support for TwinSAFE Logic. This allows safety logic functions to be executed directly within the module, reducing dependency on a central safety controller. Safety functions such as emergency stop, protective door monitoring, and two-hand control can be implemented locally, improving system responsiveness and reducing network load.

Communication takes place via Safety over EtherCAT (FSoE), a TÜV-certified safety protocol that ensures deterministic, secure, and standardised exchange of safety data across the EtherCAT network. This guarantees compliance with internationally recognised functional safety standards such as IEC 61508 and ISO 13849, providing the necessary assurance for integration into safety-critical applications.

The EJ2918 also offers parameterisable fault response times, allowing engineers to configure how quickly the module reacts in the event of a fault or watchdog timeout. This flexibility supports tailored safety concepts, ensuring both protection of personnel and optimised machine availability. With a typical E-bus consumption of 310 mA, the module operates efficiently while delivering robust safety performance.

Thanks to its plug-in form factor, the EJ2918 integrates neatly into signal distribution boards, making it particularly well-suited for modular and series machine production. This approach reduces wiring effort, minimises assembly time, and enhances reliability by eliminating repetitive manual wiring tasks. It also enables standardised machine platforms to be customised more easily for different applications.

Typical use cases for the EJ2918 include machine building, packaging systems, material handling, robotics, and modular production lines, where decentralised and scalable safety solutions are critical. By combining multiple safe outputs, local TwinSAFE Logic, and EtherCAT integration in one device, the EJ2918 provides engineers with a flexible and cost-effective module for implementing safety functions directly at the machine level.

In summary, the Beckhoff EJ2918 EtherCAT Plug-in Module delivers a complete and decentralised safety output solution with 8 safe outputs, TwinSAFE Logic integration, FSoE communication, and plug-in design for distribution boards. It enables compact, scalable, and certified safety integration in modular automation systems while reducing wiring effort and engineering complexity.