Product Description:

The EL7041-0000 EtherCAT terminal is a Beckhoff drive module from the EL EtherCAT Terminals series. It is intended to operate a single two-phase stepper motor by combining power electronics and feedback capture in one 12 mm wide slice. Within an automation system, the terminal converts EtherCAT setpoints into controlled phase currents and simultaneously reads incremental encoder data, allowing coordinated positioning tasks on compact machinery such as small pick-and-place units or indexing tables. Because the motor, encoder, and limit sensors all wire directly to the front connector, cabinet wiring is minimized and diagnostic data is available to the PLC in real time.

In normal operation, the logic section is powered with 24 VDC, and the driver can source up to 5 A to the winding pair while accepting a motor supply of up to 48 VDC. A galvanic barrier rated at 500 V separates the field voltages from the communication backplane. Micro-stepping resolution reaches 64-fold, and the module tracks incremental encoder pulses at 400,000 increments/s to maintain smooth velocity control. Four differential channels are provided for the encoder, energized by a 24 V sensor feed, and the interface supports incremental A, B, and index tracks. Closed-loop processing is handled inside the terminal to reduce the load on the central controller.

The mechanical form factor is optimized for a 35 mm DIN rail, where the terminal locks beside other I/O slices, and its housing carries an IP20 protection rating for use in enclosed control panels. Position calculation uses a 4-fold edge evaluation method so each quadrature cycle yields four count values, increasing resolution without raising the encoder frequency. Two configurable limit inputs guard against overtravel, and the single motor output channel is routed through a removable spring clamp connector. These features allow the terminal to manage axis motion without external drives or interface modules.