Beckhoff EP7041-3002 EtherCAT Box Digital Input Module

The Beckhoff EP7041-3002 is a compact digital input module from the EtherCAT Box product family, designed for direct field installation in industrial automation systems. This module provides four digital input channels, each rated for 24 V DC, and is housed in a rugged IP67 enclosure that withstands dust, moisture, and mechanical impact. It is ideal for connecting sensors such as proximity switches, photoelectric sensors, and pushbuttons in applications like conveyor systems, packaging machinery, and robotic cells.

The EP7041‑3002 communicates via EtherCAT, offering high‑speed deterministic data exchange with cycle times down to 100 µs. It features M8 connectors for both the EtherCAT network and the I/O signals, ensuring reliable and secure connections. The module includes diagnostic LEDs for each input channel, as well as a module status LED, facilitating rapid troubleshooting. Its wide operating temperature range and vibration resistance make it suitable for harsh industrial environments.

Technical Specifications

• Number of digital inputs: 4 (24 V DC, type 3 according to IEC 61131‑2)

• Input voltage range: 20.4‑28.8 V DC (including ripple)

• Input current: Typ. 3 mA per channel

• Input filter delay: Programmable from 0.1 ms to 10 ms

• Connection method: M8 connectors (3‑pin, male/female)

• Protection rating: IP67 (fully potted housing)

• EtherCAT interface: 2 x M8 connectors (input and output, 100 Mbit/s)

• Distributed clock: Supported for precise synchronisation

• Power supply: 24 V DC (via EtherCAT or external power feed)

• Current consumption from supply: Typ. 60 mA (logic) + input current

• Operating temperature: -25°C to +60°C

• Storage temperature: -40°C to +85°C

• Vibration resistance: EN 60068‑2‑6 (5 g, 10‑500 Hz)

• Certifications: CE, UL, RoHS

Key Functional Features

• High‑speed signal acquisition: The EtherCAT interface enables real‑time acquisition with microsecond‑level jitter, ideal for closed‑loop control.

• Integrated protection: Each input is protected against reverse polarity and overvoltage, ensuring reliable operation in industrial networks.

• Diagnostic LED indicators: Individual LEDs for each channel show the signal state, while a global LED indicates module health and bus communication.

• Hot‑swap capability: The module can be replaced without powering down the system (if topology supports it).

• Flexible mounting: Two M4 fixing screws allow installation on any flat surface, with no additional enclosure required.

Typical Applications

• Machine mounting: Directly on robot arms, conveyor frames, or transfer lines.

• Outdoor or washdown areas: In food processing, chemical plants, and automotive paint shops.

• Material handling: Connecting proximity sensors for position detection and sorting.

• Modular machines: Enabling quick‑connect I/O for interchangeable tooling stations.

Installation and Wiring Guidelines

Mount the module using two M4 screws. Connect the EtherCAT network via the M8 connectors (IN and OUT) using shielded cables. The power supply is connected through the same EtherCAT cable or via a separate power M8 connector (if available). Connect field sensors to the M8 input connectors; each connector is keyed to prevent mis‑insertion. Ensure the supply voltage is within the specified range and that the system ground is connected to the module's metal housing. For optimal noise immunity, keep signal cables away from high‑power lines.

Environmental and Compliance

The EP7041‑3002 meets the EMC requirements for industrial environments (EN 61000‑6‑2/‑4). It is CE and UL listed, and fully RoHS compliant. Its IP67 rating allows operation in areas with direct water spray and heavy dust.

Conclusion

Beckhoff EP7041‑3002 provides a robust, space‑efficient solution for adding digital inputs to an EtherCAT network. Its rugged housing, fast communication, and diagnostic capabilities make it an excellent choice for distributed control architectures in demanding industrial settings.