Beckhoff is extending its range of compact drive technology in the higher performance segment with the development of the EL7051 EtherCAT stepper motor terminal, making it possible to drive stepper motors with a higher power rating directly from the I/O system. In combination with the AS1060 stepper motor, the EL7051 represents an inexpensive small drive solution.
As an addition to the existing EL7031 and EL7041 stepper motor terminals, intended for motors up to 24 VDC and 1,5 A or 50 VDC and 5 A respectively, the new EL7051 is suitable as a complete drive system for motors up to 80 VDC and 8 A. The terminal contains both the outputs for the motor and the inputs for the feedback system. Feedback systems can be eliminated in simple applications, since the terminal has an internal counter.
The pulse-width modulation output stages of the stepper motor terminal cover a wide voltage and current range and together with two inputs for limit switches, they are located in the terminal. By setting a few parameters in the object directory, the EL7051 can be adapted to the motor and the application, eg, via the TwinCAT System Manager. The 64-fold micro-stepping ensures particularly quiet and precise motor operation and together with the AS1060 stepper motor, represents a complete, compact motion axis. Preferred fields of application for the inexpensive drive solution include feed axes or simple transport and stroke movements.
A further advantage of the EL7051 is its integration into the EtherCAT terminal system. This places all EtherCAT characteristics such as high performance, optimum diagnostics, and distributed clock functionality at the user’s disposal. Integration into the I/O system simplifies cabling and commissioning considerably and reduces cabinet space and costs.
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