Beckhoff: AX8820 Universal Regenerative Unit
The AX8820 universal regenerative unit is used to feed regenerative energy back into the supply grid. It is compatible with the AX8000 multi-axis servo system, AX5000 digital compact servo drives, and third-party devices. Sinusoidal energy recovery prevents the typical network distortions seen with block-shaped recovery. For effective energy management, the regenerative energy is initially stored in the DC link. The recovery into the supply network does not begin until shortly before the overvoltage threshold of the connected devices is reached.