8BVI0028HWS0.000-E B & R Automation
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The B & R Automation 8BVI0028HWS0.000-E is a servo controller in the 8BVI Servo Controllers series. It delivers a continuous power of 2.8 kW and supports a nominal DC bus of 750 VDC. The unit offers a maximum output frequency of 598 Hz and features an IP20 protection rating.
Internal Product Review
The 8BVI0028HWS0.000-E is a B & R Automation servo controller with 2.8 kW continuous power and a 3.8 A current rating. The HV voltage class and 750 VDC nominal DC bus support confident high-performance drive integration. IP20 protection and wall-mounted construction make this unit an excellent choice for clean industrial cabinet installations.
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Product Description:
The 8BVI0028HWS0.000-E servo controller is produced by B&R Automation and belongs to the 8BVI Servo Controllers series. Designed for closed-loop drive regulation, it interfaces with high-voltage inverters and permanent-magnet motors to coordinate speed, torque, and position in automated cells and material-handling stations. By combining the power stage and control electronics in one unit, it helps reduce cabinet complexity while maintaining deterministic response through real-time fieldbus links. This arrangement supports precise axis behavior during acceleration, steady running, and deceleration without requiring separate external regulation hardware.
The unit delivers a continuous output of 2.8 kW while drawing a line current of 3.8 A from its HV supply rail. Its internal DC link operates at 750 VDC and uses a 165 µF bus capacitor to smooth regenerative energy during braking cycles. For demanding motion profiles, the controller modulates phase voltage up to 598 Hz and uses a carrier switching frequency of 5 kHz to limit harmonic distortion in the motor output. Power for logic and sensors is supplied separately at 25 VDC with a tolerance of ±1.6%, which helps keep control signals stable when load conditions change quickly. The unit is placed in the HV voltage class for systems above 600 VDC, and two front slots accept option modules for functions such as I/O expansion or encoder interfacing.
The enclosure is wall-mounted and measures 53 mm in width, 263 mm in depth, and 317 mm in height, which helps conserve panel space in multi-axis installations. During short acceleration peaks, the power stage can supply a transient output of 9.5 Aeff, allowing brief torque surges without unnecessary tripping. The housing has an IP20 protection rating, so it prevents finger contact with live parts but is intended for use inside a clean, closed cabinet. Its mounting layout promotes vertical airflow along the heat-sink fins to remove switching losses, and the slim profile leaves room for neighboring modules in tightly packed control panels.
