BECKHOFF ER1819-0021 EtherCAT Box Digital Input Module

Description

The BECKHOFF ER1819-0021 is a high-density, IP67-rated EtherCAT Box designed for direct machine mounting outside of traditional control cabinets. This digital input module is engineered to acquire binary control signals from the physical process level and transmit them reliably to the controller over high-speed EtherCAT. Housed in a zinc die-cast casing, it provides reliable protection against moisture, dust, and mechanical stress in harsh industrial automation environments.

This module features 16 digital inputs configured with standard M8 connections suitable for three-wire sensors. The inputs conform to the EN 61131-2 Type 1/3 specification and integrate a fast 10-microsecond input filter to ensure swift and accurate signal transition capture. The compact, decentralized architecture reduces cabling footprint, simplifies field wiring, and optimizes communication performance direct to the machine level.

Features

• 16 digital inputs for dense binary signal acquisition
• Standard M8, 3-pin, A-coded sensor connection technology
• Fast 10-microsecond input filter configuration for high-speed responsiveness
• Zinc die-cast housing offering IP65, IP66, and IP67 ingress protection
• Integrated sensor supply driven from control voltage, short-circuit proof up to 0.5 A in total
• Direct EtherCAT communication via dual shielded M8 screw-type sockets
• 500 V electrical isolation to protect upper-level control electronics

Applications

• Decentralized machine control systems without protective enclosures
• Material handling, logistics, and conveyor systems with dense sensor clusters
• Robotics, packaging machinery, and assembly systems requiring localized I/O nodes
• Wet or dusty industrial environments requiring resilient IP67 field modules

Technical Specifications

General

Signal and I/O

Electrical and Communication

Environmental and Compliance

Installation Guidelines

1. Ensure that all system power supplies are completely de-energized before mounting or wiring the module.
2. Mount the module securely on a flat surface using the integrated mounting points: two 3.5 mm diameter holes for M3 hardware, or two 4.5 mm diameter holes for M4 hardware.
3. Connect the incoming and downstream EtherCAT communication lines using shielded, screw-type M8 cabling to protect against electromagnetic interference.
4. Wire the digital sensors to the M8 3-pin A-coded input channels. Ensure the combined sensor load does not exceed the maximum 0.5 A sensor supply limit.
5. Properly seal any unused M8 ports with protective caps to maintain the IP65/66/67 ingress rating.
6. Connect the 24 V DC power feed, verify correct polarity, apply system power, and monitor diagnostic LEDs for standard startup status.