Rockwell Automation Allen-Bradley PowerFlex 755 AC drives

Rockwell Automation has extended the power range of its Allen-Bradley PowerFlex 755 AC drives to 900 kW and added 690 V ratings. The drives are suitable for heavy industrial applications, providing users with increased application flexibility, advanced diagnostics and a common DC bus option. The company has expanded the horsepower range and added new features to bring the benefits of the PowerFlex 755 family - advanced diagnostics, a convenient rollout design and control options - to a broader range of motor control applications.

The common DC bus option allows users to connect the PowerFlex 755 AC drive to a common DC bus configuration, which takes advantage of different drive cycles to share energy. In this configuration, a DC bus acts as a common energy source that feeds energy from a generating load to a motoring load. Managing energy from a shared source increases overall system performance and reduces losses - ultimately improving the application’s energy efficiency.