The Beckhoff EL1819 EtherCAT Terminal is a high-density digital input module designed to efficiently acquire binary signals in automation systems. With 16 input channels in a single compact housing, it provides excellent channel density for applications where numerous digital sensors and switches need to be monitored.

Each input channel operates at a nominal voltage of 24 V DC (-15%/+20%) and consumes a typical current of 3 mA, in line with EN 61131-2, type 1/3 standards. This ensures compatibility with a wide range of industrial sensors such as proximity switches, photoelectric sensors, and pushbuttons. By adhering to these industry standards, the EL1819 offers engineers a reliable and versatile input solution for diverse applications.

The terminal features a 10 µs input filter, which allows it to capture fast-switching signals with high accuracy while still suppressing unwanted electrical noise. This makes it particularly suitable for time-critical applications where precise detection of rapid input changes is essential, such as packaging machinery, assembly lines, robotics, and motion control systems.

Designed for 1-wire connection technology, the EL1819 simplifies wiring while reducing installation time and space requirements in control cabinets. Its compact design ensures that engineers can integrate a high number of input channels into tight spaces without compromising performance or reliability.

The module is powered via the E-bus, drawing a typical 4 mA plus the connected load from the power contacts. This efficient power consumption ensures stable operation even in systems with large numbers of I/O terminals. By leveraging EtherCAT’s deterministic communication, the EL1819 delivers fast and synchronised data exchange with the controller, supporting real-time automation requirements.

As part of Beckhoff’s modular EtherCAT I/O system, the EL1819 integrates seamlessly with other digital, analogue, motion, and safety terminals. This modularity allows engineers to design highly customised and scalable I/O architectures tailored to specific project needs, while benefiting from the high performance and flexibility of EtherCAT.

Typical applications include high-speed production machinery, conveyor systems, robotics, packaging equipment, and building automation, where reliable monitoring of multiple digital signals is critical. The ability to pack 16 channels into a single terminal not only saves space but also reduces overall system cost by minimising cabinet wiring and simplifying installation.

In summary, the Beckhoff EL1819 EtherCAT Terminal offers a compact, reliable, and high-performance solution for digital input acquisition. With 16 channels, fast 10 µs filtering, industry-standard compatibility, and efficient operation, it delivers the performance required for modern automation systems while maintaining flexibility and scalability within EtherCAT-based architectures.