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Rockwell Automation has expanded the power range of its Allen-Bradley Powerflex 755 AC drives, which are suitable for motor control applications in a variety of heavy industries.

The power range of the drives has been extended to 450kW/700hp, providing users with increased application flexibility, according to the company.

Featuring advanced diagnostics and a roll-out design, the Powerflex 755 AC drives can be used in oil-and-gas, tire, rubber, refining, material-handling, metals and mining tasks.

A key feature of the Powerflex 755 extended-power range drive is its roll-out capability, which facilitates access to the drive for fast installation and maintenance.

The drive’s modular design helps to simplify the 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 advantage is the ability for the control pod in this drive to be mounted remotely for hassle-free access to low-voltage control and diagnostics.

Advanced diagnostic capabilities include the indication of blown fuses and blown surge protectors.

Not only are these alarms reported to the main control to help simplify troubleshooting, but they also provide protection inside the drive.

The monitoring and tracking of operating data on cooling fans, input/output (I/O) relay cycles and motor runtimes also provide valuable 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.

The Powerflex 755 now supports Rockwell Automation Integrated Motion, meaning that it can be configured and controlled using motion profiles and instruction sets in an Allen-Bradley Controllogix controller with Rockwell Software’s RSLogix 5000 software.

The ability to support variable-frequency drives, motion drives, I/O, smart actuators and other Ethernet/IP-connected devices on a common network helps to increase design flexibility, improve system performance and reduce engineering costs.

This power range extension expands the Powerflex 755 AC drive offering from 0.75kW (1hp) up to 450kW and 700hp at 400/480VAC input.

Rockwell Automation

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