BECKHOFF EL3051 EtherCAT Terminal

The EL3051 is a 1-channel analog input terminal from BECKHOFF, specifically designed to process standard 4–20 mA current signals. Utilizing single-ended input technology, this EtherCAT Terminal provides a cost-effective solution for acquiring precise analog measurements from a single field device. With 12-bit resolution and a fast 0.625 ms conversion time, the EL3051 is suitable for high-speed process control and monitoring tasks within an EtherCAT industrial network.

Features

• 1-channel analog input for 4–20 mA signals
• Single-ended input technology
• 12-bit resolution (presented as 16-bit)
• Fast conversion time of 0.625 ms (configurable)
• Advanced signal conditioning: activatable FIR/IIR filters
• Integrated limit value monitoring
• Compact, 12 mm wide housing with status LEDs for clear diagnostics

Applications

• Analog current loop signal acquisition (e.g., from pressure, temperature, or flow sensors)
• Process monitoring in factory and building automation
• Data integration of standalone analog field devices into EtherCAT systems
• Industrial control loops requiring high-speed analog feedback

Technical Specifications

Installation Guidelines

• Mount the EL3051 onto a 35 mm DIN rail (EN 60715) using the integrated locking mechanism.
• Use the double slot and key connection for secure side-by-side assembly with other EtherCAT terminals.
• Connect wiring using spring-actuated terminals, suitable for both solid and flexible conductors (stripping length 8–9 mm).
• To ensure measurement accuracy, follow EMC installation standards (EN 61000-6-2/EN 61000-6-4) to minimize electrical noise on the current loop.
• Maintain the ambient operating temperature between -25 and +60 degC.

Compliance and Certifications

• CE
• UL
• ATEX: II 3 G Ex nA IIC T4 Gc