Product Description

The Beckhoff EL2904 is one of the terminals from the EL EtherCAT Terminal Series that has TwinSAFE technology embedded into it, thus the terminal serves both as a digital output terminal as well as providing functional safety mechanisms. All four output channels are rated at 0.5 A and function at a nominal voltage of 24V, making these terminals suitable for a variety of applications in automated industrial environments that require serious switching performed safely.

This terminal is quite versatile since it enables positive switching and ground piping switching. The Device features spring-loaded wiring terminals that promote both wiring types, 1-wire and 2-wire. TwinSAFE on the EL2904 ensures SIL (Safety Integrity Levels) 2 and 3 as well as PL (Performance Levels) c, d, and e are met. As a result, applications that necessitate a higher degree of functional safety can benefit from these devices. The terminal is also suitable for ATEX Zone 2 and IECEx Zone 2 applications and therefore does not pose risk in terms of where gas may be emitted.

The EL2904 has safety functionalities and it is furthermore an EtherCAT device with support for Distributed Clocks. The distributed clock makes sure the local clock integrated into the EtherCAT slave controller stays within <100 ns precision and synchronizes with the master clock allowing all devices to work in coordinated operations in time sensitive processes. The EL2904 also has adequate protection from impact and vibration (EN 60068-2-6 and EN 60068-2-27 specifications) and can be used within the temperature parameters from 0°C to +55°C and storage at – 25°C. The small dimensions of the device together with the safety characteristics and explosion proof allow utilizing the device in control of critical outputs in the industrial safety applications.