In the first of several planned extensions, Rockwell Automation has expanded the power range of its Allen-Bradley PowerFlex 755 AC drives to 450 kW/700 Hp, providing users with increased application flexibility. Featuring advanced diagnostics and a roll-out design, the PowerFlex 755 AC drive is suited for motor-control applications in a variety of heavy industries, including oil and gas, tire and rubber, refining, material handling, metals and mining.
A key feature of the PowerFlex 755 extended power range drive is its roll-out capability, which is designed to provide easy access to the drive for fast installation and maintenance. The drive's modular design can help simplify replacement of drive components, such as cooling fans, circuit boards and major subassemblies.
This modularity also allows the drive's converter and control pod to remain in the unit while the inverter is rolled out, so control wiring can remain connected. An additional feature is the ability for the control pod in this drive to be mounted remotely for access to low-voltage control and diagnostics.
Advanced diagnostic capabilities include indication of blown fuses and blown surge protectors. Not only are these alarms reported to the main control to help ease troubleshooting, but they also provide protection inside the drive. Monitoring and tracking of operating data on cooling fans, I/O relay cycles and motor run times also provide data for preventive maintenance, helping to reduce unplanned downtime. The PowerFlex 755 drive comes equipped with an embedded Ethernet port and five option slots that allow users to tailor the drive to best suit their application. Options include I/O, feedback, safety, additional communications, and auxiliary control power input.
