The Beckhoff EL3024 EtherCAT Terminal is a compact and high-performance analog input module designed for acquiring standard 4…20 mA current signals. With four differential input channels and a 12-bit resolution, the EL3024 provides accurate and reliable data acquisition for industrial applications where precision and robustness are essential.

The terminal’s differential input design is particularly advantageous in electrically noisy environments, offering greater immunity to interference compared to single-ended measurement. This ensures stable and accurate readings, even when sensors are connected over long cable distances. Its internal resistance of approximately 85 Ω plus diode voltage guarantees secure signal acquisition, while the ability to tolerate common-mode voltages of up to 10 V provides an additional layer of robustness in industrial conditions.

Optimised for standard process signals, the EL3024 is ideal for interfacing with sensors and transmitters that operate in the 4…20 mA range, a widely used standard in process control for transmitting values such as pressure, temperature, flow, and level. The terminal’s input filter limit frequency of 1 kHz provides effective suppression of high-frequency noise, ensuring that only relevant and accurate measurement values are recorded.

A key advantage of the EL3024 is its fast conversion time of 0.625 ms (default), enabling near real-time data acquisition for time-critical applications. The conversion process is also configurable with multiplexed operation, giving users the flexibility to adjust performance to suit specific system requirements, balancing speed with channel synchronisation.

The module is powered directly from the E-bus, simplifying integration into Beckhoff’s modular EtherCAT I/O system. This streamlined design reduces wiring complexity and supports scalable expansion, making it easy to adapt systems as project demands evolve. Its compact form factor further conserves valuable cabinet space, an important consideration in dense automation setups.

In practical applications, the EL3024 is an excellent choice for acquiring process variables from field instruments and integrating them into PLCs, SCADA systems, or distributed control systems. Whether used in manufacturing plants, building automation, or process industries, it provides the precision and reliability required for closed-loop control, monitoring, and optimisation tasks.

In summary, the Beckhoff EL3024 EtherCAT Terminal delivers robust and accurate current signal acquisition with four differential channels, high-speed conversion, and strong noise immunity. Combining flexibility, reliability, and efficiency, it is a valuable component for modern automation systems requiring precise and synchronised measurement of 4…20 mA process signals.