The sophisticated Hänel EcoDrive lift system for intra-logistics tasks uses the compact Mitsubishi Electric FR-A741 frequency inverter with integrated energy recovery function.

The Hänel Lean-Lift^® is a fully automatic, height-optimised storage system which makes the best possible use of the storage space available. In order to increase energy efficiency, the installation can be expanded by adding the optional EcoDrive^® function. If the FR-A741 with integrated energy recovery function is used, it will convert the kinetic energy produced during the downward movement of the extractor (load-carrying device) into electrical energy and feed it back into the electrical supply system.

FR-A741 reduces CO2 emissions

There are tangible benefits in energy saving and cost reduction that are soon evident: according to the travel capacity of the lift, up to 40 per cent of the energy originally required for the upward movement can be recovered and fed into the power supply system. CO2 emissions are also reduced.

Inverter drives are frequently used for energy saving applications and the additional energy recovery offered by the FR-A741 mode makes it suitable for actuators or for controlling high-performance machines with regenerative torques, e.g. for applications involving vertical and horizontal movements, for conveyor systems, centrifugal separators, test equipment or winding machines.

Combined units saves enclosure and wiring

In the Mitsubishi FR-A741, the frequency inverter and energy recovery unit are combined in a common compact housing that allows smaller, resulting in more cost-effective drive systems.  Compared with the situation when an external energy recovery unit is used, the electrical wiring can be reduced by up to 60 per cent and the installation can bring a saving of up to 40 per cent on the space required according to the performance class in each case.

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