The Beckhoff EL4004 EtherCAT Terminal is a compact, high-performance module designed for precise voltage output in industrial automation systems. Offering four analogue output channels, the EL4004 enables accurate signal generation for a wide range of applications, from process control to motion coordination.

Each of the four channels delivers a voltage signal in the range of 0 to 10 V, making the EL4004 well suited for driving actuators, setpoint control in drives, or interfacing with external devices that require analogue voltage inputs. The terminal delivers outputs at a 12-bit resolution, ensuring fine granularity and smooth signal control across the full operating range.

One of the defining strengths of the EL4004 is its integration of EtherCAT distributed clock technology. With a synchronisation precision of << 1 µs, it enables highly coordinated and deterministic output timing across distributed systems. This makes the EL4004 ideal for applications requiring synchronised multi-channel analogue outputs, such as high-speed production machinery, robotics, and testing systems where precise timing is critical.

The EL4004 is designed for robust and reliable operation. Each channel is short-circuit proof and can safely drive loads with resistance values greater than 5 kΩ. This ensures dependable performance even under challenging industrial conditions and protects both the module and connected devices from damage. Power is supplied conveniently via the 24 V DC power contacts, simplifying integration into modular terminal strands and reducing wiring complexity.

As part of Beckhoff’s EtherCAT Terminal family, the EL4004 benefits from the scalability and modularity of the system. It can be seamlessly combined with digital, analogue, and special function terminals to create customised I/O solutions tailored to specific automation needs. Its compact housing helps conserve valuable cabinet space while maintaining high channel density, making it a cost-effective option for systems where efficiency and flexibility are priorities.

The EL4004 is particularly useful in applications that require precise analogue control signals, such as regulating valves in process automation, generating reference voltages for test benches, or providing setpoints for servo amplifiers and frequency inverters. Its synchronisation capabilities ensure that signals are not only accurate in value but also tightly aligned in time with other system processes.

In summary, the Beckhoff EL4004 EtherCAT Terminal delivers reliable and precise analogue output capabilities in a compact modular design. With four voltage output channels, 12-bit resolution, distributed clock synchronisation, and short-circuit protection, it provides engineers with a versatile and dependable solution for analogue signal generation in modern automation systems.