8BVI0028HWD0.000-E B & R Automation
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The B & R Automation 8BVI0028HWD0.000-E is a dual-axis servo controller in the 8BVI Servo Controllers series. It supports up to 3.8 Aeff continuous current per motor and 2.8 kW continuous power per motor. The controller is designed for wall mounting and features an IP20 protection rating.
Internal Product Review
The 8BVI0028HWD0.000-E is a B & R Automation servo controller with 2-axis capability and 2.8 kW continuous power per motor. A 750 VDC DC bus and IP20 protection support dependable integration in controlled industrial cabinets, making this unit a strong choice for precise multi-axis motion control.
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Product Description:
The 8BVI0028HWD0.000-E is a two-axis servo controller produced by B & R Automation within the 8BVI Servo Controllers series. The unit coordinates torque, speed, and position loops for paired synchronous or induction motors in automated cells, packaging lines, and material-handling stations. This arrangement lets one compact module manage coordinated motion on paired machine axes without requiring separate single-axis amplifiers. By integrating drive electronics, DC link management, and a safety-oriented brake supply in a 53 mm-wide enclosure, it frees space on crowded control panels and acts as the central power stage between the machine PLC and the servo actuators.
Each axis can deliver a continuous phase current of 3.8 Aeff, translating into a rated mechanical output of 2.8 kW per motor while the combined electrical draw amounts to 5.73 kW across both channels. Energy is transferred from a DC link that operates at 750 VDC and is modulated by insulated-gate drivers that switch at a nominal carrier of 5 kHz. Vector control routines then shape the sine output up to 598 Hz, allowing high-speed spindles or linear motors to run at application-specific frequencies. Shared control of both channels also supports compact multi-axis layouts where synchronized movement and orderly bus routing are important. The controller is wall-mounted, conserving cabinet depth, and the internal layout simplifies bus cabling when multi-drive systems are required.
Transient demands are handled by a peak phase current of 9.5 Aeff per channel, supported by a DC bus capacitor bank sized at 165 µF that stabilizes link voltage during regeneration. The logic and brake circuits draw from a separately fused supply of 25 VDC ±1.6%; the brake coil itself is limited to 1.1 A so motor holding torque is maintained without excessive heating. Two plug-in slots accept option cards for encoder feedback or fieldbus expansion, and this allows the base unit to work with different feedback types or communication networks without changing the main power section. The 23.5 µF input capacitor smooths auxiliary power. A front shield with a IP20 rating protects live conductors, enabling installation in ventilated cabinets without additional housings.
