Mitsubishi Electric UK has announced a new range of 690V ac inverter drives called the FR-A770 Series.  Based on the existing FR-A740-EC models, they have been developed for use in harsh industrial applications and environments.

The new FR-A770 series product range comprises two models with motor rated capacities of 355kW and 560kW. It is based on the successful FR-A700 series, and includes dedicated features for the European market, such as PLC function.

The FR-A770 frequency inverters combine innovative functions with reliable technology, ensuring maximum performance, efficiency and flexibility. Two models with motor-rated capacities of 355 kW and 560 kW with high overload capability of 150 percent for 60 sec are currently available.

They are intended use in demanding drive applications requiring high speed and torque quality such as shipboard and offshore industries, and the water/waste-water industry. Typical applications are expected to include cranes and lifting equipment, conveyor systems, extruders and centrifuges, printing presses, winders and mining or even ski lifts and cable cars.

All FR-A700 series inverters are equipped with Real Sensorless Vector control for speed and torque control in open loop, as well as for positioning in closed loop to ensure optimum control quality. The FR-A700 series can be used in conjunction with servo drives within a motion system. Plug-and-play integration in positioning systems can be realised via SSCNET III. The inverters can also be utilised as leading axis drives.

The integrated PLC functionality allows direct access to all the drive parameters and it can take over plant management as an autonomous control and monitoring unit if required. The frequency inverters are equipped with a USB, RS485 and Modbus-RTU interface as standard and also comply with international network standards such as CC-Link, CC-Link IE Field, Profibus DP, Profinet, EtherNet IP/ DeviceNet and LonWorks.

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