Product Description:

The 8B0P0220HW00.000-E is a DC-bus power supply manufactured by B&R Automation for the 8B0 ACOPOS Multi Power Supplies series. In multi-axis drive installations, the unit converts three-phase mains energy into a stabilized DC link that feeds servo inverters and absorbs regenerative energy during braking. By providing shared power and controlled dissipation paths, it simplifies cabinet wiring and coordinates energy exchange among connected ACOPOS Multi modules. This arrangement lets several axes draw from the same energy source and reduces the need for separate supply units at each inverter.

During steady-state operation, the module can furnish 8 kW of continuous supply power to the common bus while dissipating 3 kW of braking energy through an external resistor. A nominal output of 22 A flows into the bus, protected by an rb+ semiconductor fuse that opens at 30 A. Internal storage totaling 660 µF supports transient current spikes, and the circuitry is designed for a maximum bus potential of 900 VDC. When an external resistor of at least 12 Ω is connected, the integrated chopper limits excess voltage, and the unit is housed in an IP20 enclosure. Wall mounting supports natural convection cooling, and the enclosure measures 106.5 mm in width, 317 mm in height, and 263 mm in depth. The unit falls under Overvoltage Category III for placement inside industrial distribution panels.

In short-term events, the supply can return 24 kW of regenerative power to upstream line modules and can absorb braking peaks of 40 kW for one second, permitting rapid deceleration of large axes without external dump units. Operation is permissible up to 4000 m above sea level when derating guidelines for current and temperature are observed. This behavior is useful on machines with frequent deceleration cycles because energy from one axis can be managed on the shared bus instead of being released uncontrolled.