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27 November, 2020

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Frequency inverters can monitor the condition of motors

19 October, 2020

Bonfiglioli has launched a range of frequency inverters that, it says, will provide the ultimate combination of flexibility, modularity and connectivity. The AxiaVert inverters come in four sizes, initially spanning power ratings from 0.25–15kW, with more powerful versions up to 400kW to follow. Adriano Chinello, marketing director for Bonfiglioli’s motion business, says that the new drives represent “a quantum leap for smartness”.

Condition-monitoring and predictive maintenance functions are built into the drives, both for key components in the inverter, and for monitoring critical parameters of attached gear-motors from Bonfiglioli’s new Evox series. The drives can provide real-time diagnostics, energy optimisation and predictive maintenance functions for an entire machine. For example, they can predict the remaining lifetimes of gearbox components.

Digital and open communications protocols that are compatible with a variety of fieldbus protocols and machine controls, simplify integration into automation networks. Encryption is embedded to ensure that communications are secure.

Integrated safety functions that comply with EN ISO 13849-1 and IEC 61508, are available in various combinations, allowing users to choose the most suitable in terms of cost, performance and their application needs. This capability is said to simplify configuration and to reduce the need for external safety components, while ensuring safe, controlled operation of applications such as lifting, thanks to a Safe Brake Control function and fast spindle axes with Safe Limited Speed, even in a sensorless configuration.

A modular structure and PLC programmability (using five IEC 61131-3 languages) allow systems to be adapted and customised to different applications. Users can define software parameters and functions, and select the most suitable hardware modules, such as communications or encoder modules, and accessories. There is a variety of frame and power sizes, mounting variants and cooling systems.

Bonfiglioli's AxiaVert inverters include condition-monitoring and predictive maintenance functions

The drives can be used with a wide range of motors, including induction, permanent magnet, asynchronous, synchronous, and synchronous reluctance types. They offer accurate speed, position and torque control, both for open- and closed-loop applications.

The AxiaManager engineering software is used to program, commission, operate and monitor the drives. It is available for Windows PCs or as an app for iOS or Android devices that gives access to the drive status and configuration via a simple interface. Using optional Bluetooth support, the app can connect to the drives without needing to open their cabinets.

The AxiaVert inverters are currently undergoing field trials and pilot installations before being launched in the first quarter of 2021.




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