EC: EJ7211-0010 Servomotor Module

Motion Control — Drives, motor control centers: The EJ7211-0010 is an EtherCAT plug-in module that seamlessly integrates with servomotors from the Beckhoff AM8100 series, offering output current up to 4.5 ARMS. This is a Control Engineering 2017 Engineers’ Choice Awards Finalist.


EJ-series EtherCAT plug-in I/O modules provide an efficient wiring solution for machines built in large and medium-sized production runs. With new EJ7xxx motion modules, space-saving compact drive technology from Beckhoff is seamlessly integrated into a plug-in module concept, enabling extremely compact I/O and motion solutions that perfectly match customer requirements. These include modules for servo, stepper and dc motor types. EJ-series plug-in modules from Beckhoff make it easy to implement a platform concept for large-volume production runs without sacrificing customization capabilities. The modules, with electronics based on the popular EtherCAT I/O system, are directly inserted into an application-specific signal distribution board that transmits signals and power to the individual connectors. Connections via pre-configured cable harnesses replace the expensive installation of individual wires, reducing per-unit costs and minimizing the risk of faulty wiring because the EJ components are clearly coded.

Compact drive technology in a new format: Already available in a Bus Terminal I/O form factor for years, compact drive technology now also is available from Beckhoff as a plug-in I/O module concept. In combination with a broad portfolio of Beckhoff motors and planetary gear units, three new EJ7xxx EtherCAT plug-in modules now enable especially compact and cost-effective drive solutions. The EJ7211-0010 servomotor module features high performance in an exceptionally compact design. This is, in large part, enabled by the integrated One Cable Technology (OCT), which combines the motor cable and an absolute feedback system into one cable. The EtherCAT plug-in module seamlessly integrates with motors from the Beckhoff AM8100 series, offering output current up to 4.5 ARMS. Since the system reads the identification plate of the AM81xx motors electronically, wiring and commissioning efforts are minimized. The fast control technology, based on a field-oriented current and PI speed control system, is suitable for demanding, highly dynamic positioning tasks. A stepper motor module (EJ7047) and a 2-channel dc motor output module (EJ7342) also are available from Beckhoff.

Beckhoff Automation, 

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