The Beckhoff EL4022 EtherCAT Terminal is a versatile analogue output module designed to deliver precise current signals for process and automation control. Featuring two independent output channels, the terminal generates current in the widely used 4…20 mA range, ensuring compatibility with industrial actuators, drives, control valves, and other current-driven devices.

Engineered for accuracy, the EL4022 employs a 12-bit resolution digital-to-analogue conversion, enabling fine control over output signals. This precision makes it ideal for applications where smooth and stable control is critical, such as regulating valve positions, adjusting motor speeds, or providing reference values to process instrumentation. With a load capacity of less than 500 Ω, the outputs are designed to accommodate typical industrial wiring and device requirements while maintaining consistent performance.

Reliability is a core strength of the EL4022. Each channel is short-circuit proof, safeguarding the terminal and connected devices against wiring faults or overload conditions. Powered by a 24 V DC supply via the power contacts, the module integrates seamlessly into distributed EtherCAT I/O systems without the need for complex external wiring. Its robust design ensures dependable operation even in demanding industrial environments.

One of the key advantages of the EL4022 is its support for distributed clocks technology. With a synchronisation precision of less than 1 microsecond, the terminal enables highly deterministic output behaviour across the EtherCAT network. This capability is particularly valuable in applications requiring time-critical coordination, such as synchronised motion control, multi-axis systems, or process loops that demand precise timing. By aligning its outputs with other network devices, the EL4022 ensures consistent and repeatable control cycles.

Integration into EtherCAT systems is straightforward, with the EL4022 benefiting from Beckhoff’s modular I/O concept. It can be combined with other digital, analogue, or safety terminals to create tailored automation solutions. Configuration and diagnostics are carried out via TwinCAT software, allowing engineers to easily parameterise outputs, monitor performance, and implement control logic directly within the same environment.

The EL4022 is well suited to a wide variety of industrial automation, building management, and process control applications. Whether it is used to drive proportional actuators in HVAC systems, deliver setpoints to industrial controllers, or interface with current-based sensors and transducers, the terminal provides a stable and precise output platform.

In summary, the Beckhoff EL4022 offers a compact, accurate, and reliable analogue output solution. With its dual 4…20 mA outputs, high-resolution conversion, distributed clock synchronisation, and robust protective features, it delivers the performance and dependability required for modern automation systems.