EL4021 | BECKHOFF | EtherCAT Terminal Analog Output Module

Description

The EL4021 is a high-precision EtherCAT Terminal from Beckhoff, featuring a 1-channel analog output capable of generating a 4…20 mA current signal. Designed for industrial control systems, this module utilizes 12-bit resolution to provide accurate output control with a conversion time of approximately 100 µs. The EL4021 supports Distributed Clocks (DC), enabling highly precise synchronization across an EtherCAT network with a precision of << 1 µs.

Features

• 1-channel analog output (4…20 mA current)
• 12-bit resolution for precise signal control
• Distributed Clocks (DC) support for sub-microsecond synchronization
• Short-circuit proof design with < 500 Ω load capacity
• Electrical isolation of 500 V between E-bus and signal voltage
• Compact terminal housing with integrated signal LEDs for status monitoring
• Optional watchdog function for user-specific output values with ramp control

Technical Specifications

Installation Guidelines

• Mounting: The EL4021 is designed for installation on a standard 35 mm DIN rail (EN 60715). Use the double slot and key connection for secure side-by-side mounting.
• Wiring: The terminal supports solid, stranded, and flexible conductors (with ferrules). Use a screwdriver for spring actuation.
• Connection Cross-sections: 0.08…2.5 mm² (solid/stranded) or 0.14…1.5 mm² (flexible). Strip wires to a length of 8…9 mm.
• Environmental: Ensure the module is installed in an IP20-rated environment. The unit operates in variable installation positions.
• Safety: Adhere to ATEX requirements (II 3 G Ex nA IIC T4 Gc) when installing in hazardous areas.

Compliance and Certifications

• CE
• UL
• ATEX: II 3 G Ex nA IIC T4 Gc
• EMC immunity/emission: Conforms to EN 61000-6-2/EN 61000-6-4
• Vibration/shock: Conforms to EN 60068-2-6/EN 60068-2-27