EL4022 Beckhoff
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MPN: EL4022-0000
The Beckhoff EL4022 is part of the EL EtherCAT Terminals series and features two single-ended analog outputs with 12-bit resolution. It supports a supply voltage of 24 VDC, an isolation voltage of 500 V, and has a power contact capacity of 4 Amps. This module is mounted on a 35 mm rail and provides IP20 protection class.
Internal Product Review
The EL4022 is a Beckhoff EtherCAT analog output terminal with 2 outputs and 12-bit resolution. Distributed clocks support and <100 ns DC accuracy give the terminal very precise timing behavior in synchronized control applications. With 500 V isolation and IP20 protection, the EL4022 is a dependable choice for accurate cabinet-based analog output control.
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Product Description:
The EL4022 is an analog output EtherCAT terminal manufactured by Beckhoff for the EL EtherCAT Terminals series. The unit provides two voltage outputs so a machine controller can generate reference signals for actuators, positioners, or process regulators without external conversion hardware. Integrated into an EtherCAT segment, the terminal delivers deterministic I/O performance while occupying only 12 mm of DIN rail width. Its compact housing provides precision analog control for automated equipment with limited installation space.
The module provides voltage outputs with 12-bit resolution, and each conversion result is mirrored in a process image formatted as 2 × 16-bit analog output words for the EtherCAT master. With two single-ended channels, output accuracy is maintained within ±0.1% of full scale between 0 °C and 55 °C, provided that the external load is at least 500 Ω. Electrical isolation rated at 500 V separates the control bus from the actuator wiring, while the internal power electronics receive 24 VDC from the terminal row. A multiplexed sampling system cycles through both outputs to manage signal updates. Integrated distributed clock support timestamps each update, allowing synchronized motion or process sequences to operate consistently across the EtherCAT network.
Distributed clock accuracy of 100 ns aligns the terminal’s output events with those of other EtherCAT nodes. The housing mounts on a 35 mm top-hat rail and has an IP20 protection rating, so the device is intended for installation inside a control enclosure. Up to 4 A can pass through the power contacts to adjacent terminals, simplifying supply wiring for additional I/O modules in the terminal row. When the ambient temperature exceeds 55 °C, the device automatically derates and permits only one active output channel. This operating restriction limits thermal stress while maintaining the required output accuracy at elevated temperatures.
