Designed for ease of use, integration, application flexibility, and performance.

The PowerFlex 755 AC drive is aimed to maximize your investment and help improve productivity. Ideal for applications that require safety, high motor control performance, and application flexibility, the PowerFlex 755 is a highly functional and cost effective solution. The first drive to be released from the Allen-Bradley® PowerFlex 750-Series, the PowerFlex 755 AC drive provides greater functionality across your manufacturing systems from:

• 0.75…450 kW 400V AC (540V DC input)
• 1...700 Hp 480V AC (650V DC input)

The PowerFlex 755 AC drive offers more selection for control and supporting hardware options than any other drive in its class including:

• DeviceLogix™ embedded control technology that can control outputs and manage status information onboard the drive
• Standard embedded Ethernetfeature for communication to easily configure, control and collect drive data over EtherNet/IP networks
• Predictive diagnosticsallow the PowerFlex 755 to keep track of information that affects the life of its cooling fans and relay outputs. In addition to this, the drive can be programmed to monitor the run time hours for machine bearings or motor bearings, giving you the ability to configure the drive for advanced notification configured to help prevent unplanned downtime. PowerFlex 755 drives 315 kW/400 Hp and larger have additional standard protection features, including indication of blown fuses and blown surge protectors.
• Basic and Enhanced Safetyoptions are embedded into the drive to help protect personnel and equipment, conserve space in panels, and minimize downtime
• Slot-based architectureallows you to build the drive to suit your application needs. The five option slots are capable of accepting a combination of options for control, communications, I/O, feedback, safety and auxiliary control power.

PowerFlex 755 Frame 8

The PowerFlex 755 drives 315 kW/400 Hp and larger offer added benefits for maintenance and installation flexibility:

• Roll in/out design makes the drive easy to install and service
• Modular construction allows fast and easy replacement of parts
• Sealed cooling channel uses external air for main cooling, reducing contamination exposure for electronics
• Adjustable terminals provide flexibility for wiring preferences

Safety Information

The PowerFlex 755 is available with two Safety options: 1) Safe Torque-Off option or 2) Speed Monitor Safety option. The Safe Torque-Off option is the entry level safety option certified at PLd/SIL3 that requires the use of an external safety relay to meet EN954-1, Category 3 which prevents drive restarts after the safety circuit is tripped. The Speed Monitor Safety option combines the Safe Torque-Off capability and embedded Safety relay with the Rockwell Automation Safe-Speed Control core technology in one hardware option that is embedded in the drive. This option helps save space, reduces system wiring and complexity by allowing input devices to be connected directly to the PowerFlex 755, and is certified PLe/SIL3.

With the Speed Monitor Safety option you'll gain the added productivity that results from advanced safety control and also help reduce your overall system cost while improving flexibility. With the speed monitoring safe functionality you can reduce and monitor the speed of your application to a point that helps allow an operator to safely inspect and perform some process maintenance work without stopping the machine completely. The safety options available with the PowerFlex 755 can help provide reduced downtime paired with an increase in productivity for your customers.

The embedded Speed Monitor Safety option provides the following functionality: