• Rockwell Automation India Private Limited

AC Drives, Extended Power Range

Rockwell Automation, building on the foundation of the Allen-Bradley PowerFlex 755 high-power models, has extended the power range of its PowerFlex 755 AC drives to 900 kW/1350 Hp and added 600/690 V ratings. The new drives, well-suited for a variety of heavy industrial applications, provide users with increased application flexibility, advanced diagnostics and a common DC bus option. 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. Like all PowerFlex 755 drives, this latest frame size includes an embedded Ethernet port and five option slots, so users can tailor it to their application. Option modules include I/O, feedback, safety, additional communications and an auxiliary power supply. A convenient roll-out design allows easy access to the drive for fast installation and maintenance. The drive’s converter and control pod can remain in the unit while the inverter is rolled out, so control wiring can remain connected.