The Beckhoff EL3048 EtherCAT Terminal is a compact and high-density analogue input module designed to measure current signals from industrial transmitters and sensors. With eight single-ended input channels, it provides efficient data acquisition for 0…20 mA current loops, making it ideal for process monitoring, machine control, and decentralised measurement systems.

Each channel of the EL3048 captures analogue signals with 12-bit resolution, ensuring accurate digitisation of process values such as flow, pressure, temperature, or position. Its default conversion time of 1.25 ms offers rapid signal updates, while the multiplexing function allows configuration of measurement speed versus accuracy depending on the application’s requirements. This makes the EL3048 suitable for both fast-response and stable, precision-oriented monitoring tasks.

To ensure measurement reliability, the terminal integrates a 1 kHz input filter, which suppresses unwanted high-frequency noise and interference that are common in industrial environments. The typical input resistance of 85 Ω ensures stable loading of connected transmitters, while the dielectric strength of up to 30 V provides an additional layer of robustness against accidental overvoltage conditions.

As part of the EtherCAT I/O system, the EL3048 is powered via the E-bus, requiring no additional supply wiring. This seamless integration simplifies installation and enables high channel density in compact control cabinet designs. Its modular design allows it to be combined effortlessly with digital, analogue, and special-purpose terminals, giving engineers maximum flexibility in designing scalable and tailored I/O systems.

The EL3048 is especially well-suited to environments where multiple current loop sensors must be monitored simultaneously, such as process automation, factory machinery, and energy monitoring systems. With eight channels in a single module, it reduces wiring complexity, saves cabinet space, and lowers overall system cost compared to using multiple lower-channel-count terminals.

In addition, the EtherCAT communication backbone ensures deterministic and high-speed data exchange with the controller, making the EL3048 a reliable choice for applications that require synchronised measurements across distributed systems. Engineers can also configure, monitor, and diagnose the terminal using Beckhoff’s TwinCAT software, streamlining setup and maintenance.

In summary, the Beckhoff EL3048 EtherCAT Terminal is a robust and efficient solution for analogue current acquisition. With eight single-ended inputs, 12-bit resolution, configurable multiplexing, and strong noise suppression, it delivers reliable and precise measurement for a wide range of automation and process control applications. Its high channel density, modular integration, and EtherCAT communication make it a valuable component in modern, scalable automation systems.