BECKHOFF EL2872-0010 EL Series Digital Output Terminal

Product Overview

The EL2872-0010 (EL28720010) is a high-density 16-channel digital output terminal from the Beckhoff EL series, specifically engineered to interface with multi-pin connector valve terminals and high-density industrial actuators. Utilizing a flat-ribbon cable connection technology, this module minimizes cabinet wiring complexity and significantly accelerates installation time in machine-building applications. By providing ground-switching outputs with individual short-circuit protection, the EL2872-0010 ensures robust and reliable control of inductive, ohmic, and lamp loads in modern automated assembly systems.

Technical Configuration

The terminal architecture is optimized for streamlined signal distribution to valve islands. The output stage provides 16 channels, each rated for up to 0.5 A, with a short-circuit proof design that limits current to < 7 A per channel. The module incorporates reverse voltage protection and manages breaking energy up to 150 mJ per channel, making it well-suited for repetitive switching of solenoid valves. Communication is handled via the high-speed EtherCAT E-bus, with 500 V electrical isolation between the E-bus and field potential to ensure signal integrity against high-frequency industrial noise.

Technical Specifications

FAQs

What are the primary benefits of the flat-ribbon cable connection?

The flat-ribbon cable allows for mass termination to multi-pin valve terminals, which reduces point-to-point wiring labor, decreases the likelihood of connection errors, and results in a cleaner, more organized control cabinet layout.

Does the terminal require external power for the outputs?

Yes, while the E-bus provides control logic power, the field power for the 16 outputs must be supplied to the module to drive the connected solenoid valves or actuators.

Can this terminal be used in hazardous locations?

Yes, the EL2872-0010 is ATEX-approved (II 3 G Ex nA IIC T4 Gc), making it suitable for deployment in Zone 2 hazardous areas when installed in a proper enclosure.

Installation and Operational Recommendations

• Flat-Ribbon Cable Handling: When using flat-ribbon cables (AWG 28, 1.27 mm spacing), ensure that the cable is not subjected to excessive pulling or sharp bends, as this can lead to wire fatigue or intermittent contact failure at the insulation displacement connector (IDC) interface.
• Inductive Load Protection: For valve islands with large coils that may generate significant back-EMF, ensure your valve terminal includes internal flyback suppression. While the EL2872-0010 is designed for inductive loads, excessive breaking energy can reduce the lifespan of the switching transistors.
• Grounding for Safety: As this is a ground-switching terminal, ensure that the power supply common (GND) is reliably connected to the system’s protective earth at the power distribution block to ensure low-impedance current return paths for all output channels.