Beckhoff EJ-series EtherCAT I/O motion solution

EJ-series EtherCATplug-in modules make it easy to implement a platform concept for large-volume production runs without sacrificing customisation capabilities. The modules, with electronics based on the 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 preconfigured cable harnesses replace the installation of individual wires, reducing per-unit costs and minimising the risk of faulty wiring because the EJ components are clearly coded.

Compact drive technology is now also available as a plug-in module. In combination with a broad range of Beckhoff motors and planetary gear units, three EJ7xxx EtherCAT plug-in modules now enable compact drive solutions.

The EJ7047 stepper motor module was designed for applications in the medium performance range and features two inputs for limit switches; the second input can alternatively be configured by the user as an output.

The EJ7211-0010 servomotor module features integrated One Cable Technology (OCT), which combines motor cable and an absolute feedback system into a single cable.

The EJ7342 2-channel DC motor output stage is designed for direct operation of two DC motors and offers galvanic isolation from the E-bus.

For highly dynamic applications and when feeding multiple axes via a single power supply, integration of the EJ9576 brake chopper module is recommended. This protects the system against damage from overvoltage by absorbing part of the energy. If the voltage exceeds the terminal’s capacity, it discharges excess energy via a separate external resistor.