Product Description:

The EL7041 is a stepper motor drive terminal produced by Beckhoff for the EL EtherCAT Terminals series. Mounted alongside other I/O slices, it combines a two-phase power stage and fieldbus interface so that a controller can issue position or speed commands over EtherCAT. The terminal is intended to move small actuators, tool changers, and metering screws where direct panel wiring is impractical. By embedding motion control at the rail, it shortens cable runs and centralizes diagnostics in industrial automation cells.

Electrical power for the terminal can be supplied within a range of 8 VDC to 48 VDC, allowing the terminal to share existing power rails. The integrated H-bridge delivers up to 5 A RMS, providing ample current for mid-frame hybrid motors. Motion granularity reaches 64-fold microstepping, while travel speed remains high because the controller issues up to 32,000 full steps per second. One stepper output energizes the two motor phases, so no external splitter is required. Digital inputs recognize a minimum logic-high voltage of 2.5 V and a maximum logic-low voltage of 2 V, guarding against false transitions originating from long control lines. The plastic housing clips to a 35 mm DIN mounting rail, matching the mounting format used by other EL terminals.

Incremental feedback is processed internally, and a fourfold evaluation circuit tracks edge transitions at up to 400,000 increments per second. The encoder can be powered directly because the module provides a regulated 24 VDC supply rail on its signal connector. The enclosure has an IP20 rating, which provides protection against contact with hazardous internal components while remaining suitable for cabinet installation. The terminal continues to function at up to 95% humidity, provided condensation is avoided. Drive control, feedback capture, and EtherCAT communication are integrated into one terminal, allowing it to supervise a single axis without additional interface cards.