Connection technology: pulse train (frequency output)
Number of outputs: 2 channel A/B, 1 channel A/B/C (4 differential outputs)
Distributed clocks: yes
Output specification: RS422, differential, 50 mA, min. 120 Ω load
Short-circuit current: short-circuit proof
Base frequency: 0…4 MHz, 50 kHz default
Current consumption E-bus: typ. 120 mA

2-channel pulse train output: Generates precise frequency signals for motion control and encoder simulation.
High-speed performance: Supports output frequencies up to 4 MHz (50 kHz default base frequency)
Differential RS422 outputs: Provides robust signal transmission with up to 50 mA drive capability per channel.
Distributed Clock support: Enables synchronised and deterministic output timing across EtherCAT systems.

The Beckhoff EL2522 is a powerful EtherCAT Terminal designed to provide two channels of pulse train outputs for motion control and incremental encoder simulation. With high-speed operation, robust RS422 differential outputs, and support for EtherCAT Distributed Clocks, it enables highly precise and synchronised signal generation in demanding automation environments.

The EL2522 offers two independent output channels that can generate A/B pulse signals, with one channel capable of producing A/B/C outputs for extended encoder simulation. Each channel delivers four differential outputs, ensuring compatibility with devices that require RS422 interfaces. With a drive capability of up to 50 mA per channel and minimum load resistance of 120 Ω, the terminal ensures stable, interference-resistant transmission even in electrically noisy environments.

One of the defining advantages of the EL2522 is its high-speed performance. The terminal supports pulse train outputs from 0 Hz up to 4 MHz, with a default base frequency of 50 kHz. This broad range allows it to accommodate a wide spectrum of applications, from low-speed encoder simulation for commissioning and diagnostics to high-speed pulse generation for precision motion systems.

Integration with EtherCAT Distributed Clocks further enhances its performance. By synchronising outputs with the EtherCAT system clock, the EL2522 ensures deterministic and precisely timed signal generation across multiple channels and devices. This feature is especially valuable in motion control, robotics, and coordinated drive systems where precise timing directly impacts accuracy and process quality.

The terminal is also designed with robust safety and reliability features. Its outputs are short-circuit proof, protecting both the device and connected hardware from accidental faults. Additionally, its compact modular design allows for efficient DIN rail mounting while consuming just 120 mA from the E-bus, making it suitable for high-density I/O configurations.

Practical applications for the EL2522 include encoder signal simulation, frequency output for drive control, and synchronisation tasks in machine automation. For example, it can be used to simulate encoder feedback during system testing, provide reference signals for servo drives, or generate synchronised pulses in multi-axis systems. Its ability to deliver both standard and extended encoder simulation makes it a versatile tool for commissioning, diagnostics, and operation of motion-centric equipment.

In summary, the Beckhoff EL2522 is a versatile and high-performance EtherCAT Terminal for pulse train generation and encoder simulation. Offering two channels, high-speed outputs up to 4 MHz, robust RS422 differential interfaces, short-circuit protection, and precise synchronisation via Distributed Clocks, it provides a reliable foundation for advanced motion control and test applications. Compact, efficient, and fully integrated into Beckhoff’s modular I/O platform, the EL2522 enables accurate, flexible, and synchronised signal generation in modern automation systems.