The AX8820 regenerative energy unit from Beckhoff is designed to enable wide-ranging machines and systems to feed power back into the grid, reducing wasted electricity and boosting sustainability. This module is compatible with the AX8000 multi-axis servo system, AX5000 digital compact servo drives and third-party devices. Using sinusoidal regeneration, the AX8820 prevents grid distortions. The AX8820 regenerative energy unit is designed for a nominal supply voltage of 400 to 480 Vac, output of 7 kW and a maximum dc link voltage of 848 Vdc. For effective energy management, the regenerative energy is initially stored in the dc link. The AX8820 feeds power back into the grid just before the overvoltage threshold of the connected devices is reached. Several AX8820 regenerative units can work in parallel to optimally adapt the regenerative power to the needs of the machine. Several Beckhoff technologies enhance the AX8820's capabilities. The EtherCAT industrial Ethernet system supports extended parameterization and diagnostics to analyze regenerative energy. The online data can record the timing of machine processes to help determine if adjustments would increase efficiency. Motion Designer, a configuration toolset built into TwinCAT 3 automation software, calculates regenerative braking power in kWh for any Beckhoff motor-drive combination. TwinCAT Analytics measures and visualizes regenerative energy alongside other production metrics. TwinCAT Metrics can monitor drive performance by measuring the dc-link voltage.
Beckhoff Automation / www.beckhoff.com
