EL4032 BECKHOFF 2-Channel Analog Output EtherCAT Terminal ±10 V

Product Overview

The EL4032 (EL4032) is a high-precision 2-channel analog output terminal designed for the EtherCAT I/O system. It provides high-resolution voltage signals ranging from -10 V to +10 V, making it an essential component for B2B industrial applications requiring fine control over frequency inverters, proportional valves, and DC motor drives. With a 12-bit resolution, the EL4032 converts digital control values from the PLC into electrically isolated analog signals with exceptional accuracy. The integration of Distributed Clocks (DC) allows for synchronization precision of << 1 µs, ensuring that signal changes across a large-scale automation network occur simultaneously, which is critical for multi-axis motion control and high-speed processing lines.

Hardware Architecture and Signal Logic

The EL4032 utilizes a 2-wire, single-ended connection technology, drawing its required power for the analog electronics from the 24 VDC power contacts. To ensure system integrity, the terminal features 500 V galvanic isolation between the E-bus logic and the signal output level.

One of its defining technical advantages is the optional watchdog function. In the event of a communication failure, the terminal can be programmed to switch to a user-defined output value using a specific ramp, preventing sudden mechanical shifts or system damage. Furthermore, the terminal is designed to be short-circuit proof for loads exceeding 5 kΩ, providing robust protection against field-side wiring errors.

Technical Specifications

Technical FAQs

How does Distributed Clock (DC) functionality benefit the EL4032?

The Distributed Clocks feature ensures that the analog output is updated at a highly precise, synchronized interval across the entire EtherCAT segment. This eliminates jitter and ensures that multiple EL4032 terminals in different locations change their output voltage at the exact same microsecond.

What happens to the output if the EtherCAT communication is interrupted?

The terminal includes a Watchdog feature. Users can configure a "Safe State" value and a ramp time, ensuring the output transitions safely to a predefined voltage rather than dropping to zero instantly, which could cause mechanical stress on connected actuators.

Can I use the EL4032 in hazardous explosive environments?

Yes. The terminal is ATEX certified with an Ex marking of II 3 G Ex nA IIC T4 Gc, permitting installation in Zone 2 hazardous areas, provided it is housed in a suitable enclosure.

Engineering & Installation Guide

• Shielding and Signal Integrity: For analog signals, the use of shielded twisted-pair cabling is mandatory to prevent electromagnetic interference from affecting the ±10 V signal. The shield should be connected to the functional earth (FE) at the terminal point to ensure a clean signal reference.

• Wiring and Termination: Utilize the spring-actuation mechanism for a maintenance-free connection. Ensure a stripping length of 8 to 9 mm. For flexible wires in high-vibration environments, always use ferrules (f) to maintain a gas-tight, low-resistance contact.

• Thermal Spacing: While the module is ultra-slim at 12 mm, ensure that the total current load on the power contacts does not exceed 10 A. If several high-power terminals are used in the same segment, consider adding a power feed terminal to distribute the thermal load.

Engineering Advantages

The EL4032 stands out in the B2B market for its combination of speed and stability. With a conversion time of ~150 µs and a low output error of < 0.1%, it meets the rigorous demands of modern PID control loops. Its compact polycarbonate housing is designed for rugged industrial use, conforming to EN 60068-2-6/27 for vibration and shock resistance. This durability, paired with the flexibility of the ESxxxx pluggable wiring system, allows for rapid deployment and easy maintenance in complex control cabinets, ensuring high machine availability and long-term performance.