Beckhoff EP2318-0001 EtherCAT Box 4-Channel Digital I/O

Product Overview

The EP2318-0001 (EP2318 0001) is a ruggedized EtherCAT Box module designed for decentralized automation without the need for a control cabinet. Featuring a combination of 4 digital inputs and 4 digital outputs, this compact I/O distributor excels in high-performance machine building, automotive assembly lines, and material handling systems. The EP2318-0001 is engineered for direct machine mounting, boasting an IP67 protection rating that ensures total resilience against dust and high-pressure water jets. By bringing the I/O interface directly to the sensors and actuators in the field, this module drastically reduces wiring complexity, minimizes signal interference, and lowers installation costs in demanding industrial environments.

Technical Configuration

The EP2318-0001 utilizes high-speed M8 screw-type connectors for both EtherCAT communication and I/O signaling, ensuring a vibration-proof and shielded connection. The 4 digital inputs comply with EN 61131-2 (Type 1/3) standards, featuring a fast 10 µs input filter for high-speed signal capture. On the output side, the module provides 0.5 A per channel, capable of driving ohmic, inductive, and lamp loads. A critical architectural advantage is the individual short-circuit protection for each output channel, ensuring that a fault on a single actuator does not compromise the entire module's operation. The module also supports power daisy-chaining via M8 4-pin connectors, allowing for efficient power distribution across multiple EtherCAT Boxes.

Technical Specifications

Technical FAQs

Can I use the EP2318-0001 in wash-down environments?

Yes. With its IP67 rating and PA6 polyamide housing, the module is designed to withstand the harsh conditions of wash-down zones. Ensure all unused M8/M12 sockets are sealed with official Beckhoff protective caps to maintain the ingress protection rating.

What is the maximum current available for the connected sensors?

The sensor supply is drawn from the control voltage and provides a maximum of 0.5 A for all connected sensors combined. This supply is short-circuit proof, protecting the internal electronics of the EtherCAT Box.

Does this module require a separate power feed for outputs and logic?

The module uses standard M8 4-pin power connectors. It separates control voltage (Us) for internal electronics and sensors from the peripheral voltage (Up) for outputs, allowing for independent safety-related shutdown of the outputs if required.

Engineering & Installation Guide

• M8 Connector Torque: To ensure the IP67 seal and prevent loosening due to machine vibration, M8 connectors should be tightened to a specific torque (typically 0.4 Nm). Hand-tightening is often insufficient for long-term reliability in high-vibration environments.

• EtherCAT Cabling: Use only high-quality, shielded EtherCAT cables (Cat5 or higher). The shield must be properly grounded through the M8 connector housing to the machine frame to prevent communication errors caused by electromagnetic interference from nearby variable frequency drives.

• Mounting Orientation: The module supports variable installation positions. Use the two 3.5 mm fixing holes for M3 bolts. When mounting on uneven surfaces, avoid over-tightening the mounting bolts to prevent mechanical stress on the polyamide housing, which could compromise the internal seal.