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Lenze SE Corporate Communications Public Relations Press contact Ines Oppermann Address Postbox 10 13 52 · 31763 Hameln Telephone +49 (0)5154/82-15 12 Fax +49 (0)5154/82-16 05 E-mail [email protected] Website www.Lenze.com
Released for publication until October 2016
Smart Energy Recovery r700 for easy economically efficient power recovery
Hannover Messe 2016: Lenze shows how a smart concept makes the most of braking energy
Hanover/Hameln, 25 April 2016
Lenze's new Smart Energy Recovery r700 takes power recovery to
new levels of economic efficiency, practicality and , most
importantly, simplicity. The Hanover fair is the ma rket début for the
regenerative module in two power versions with 12/2 4 and 26/48
kW. Its special feature is the separation of suppl y and recovery
paths, permitting their individual design and preci sion
dimensioning customised to system needs. Regenerati ve power is
scaled with the utmost simplicity over the parallel connection of
several modules. Due to its outstanding efficiency of 98% and
elimination of external filters, the Smart Energy R ecovery very soon
pays for itself and impresses with a compact design . Retrofitting
existing machinery is not a problem.
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In many cases conventional power recovery concepts do not make economic sense,
because devices are difficult to install, too complicated to handle and investment costs
far outweigh any power savings. Lenze's new Smart Recovery Unit makes power
recovery feasible, even in applications hitherto deemed unprofitable.
Special benefit: the recovery circuit is directly connected to an intermediate circuit of any
scale, which in turn independently feeds regenerative power over a separate rectifier into
the supply grid. The regenerative function is designed so that power is only returned to
the grid when there really is too much power in the intermediate circuit. By decoupling
the power supply and recovery lines, the frequency inverter's uncontrolled bridge rectifier
remains unchanged and the recovery circuit and necessary EMC measures need only
be adapted to the regenerative power effectively required. The technical elimination of
external filter components also makes the device considerably more compact and uses
less space than conventional solutions. Furthermore, the regenerative module is
particularly easy to handle: users do not have to adjust a thing, no parameters need to
be set on the devices before deployment. Retrofitting in existing machinery is
straightforward. Depending on the quantity of power recovered, the system pays for itself
in around a year.
Typical implementation areas include storage and retrieval units or other lifting and
handling equipment, in which a relatively high amount of energy is accumulated as the
load is lowered or on test benches, where the test piece energy has to be permanently
discharged as a matter of principle. Neither converting braking energy into heat or
storing it in the system are options in applications of this nature, so recovering the
generated energy and feeding it back into the grid via the new Smart Energy Recovery
r700 is a genuine alternative.
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Picture material
The photo and text can be downloaded in the News & Press section on the Lenze SE
website (www.Lenze.com). We would also be happy for you publish this article free of
charge on your website.
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Caption: Making the most of braking energy – Lenze improves power recovery efficiency Photo: Lenze SE
About Lenze
The Lenze Group is controlled via its holding company, Lenze SE, whose headquarters
are in Aerzen, near Hamelin in Lower Saxony, Germany. Lenze is a globally active
specialist in Motion Centric Automation, offering a comprehensive portfolio of products
and services: everything from controllers and visualisation to electric drives and
electromechanical applications, plus engineering services and tools, and it all comes
from one source. Lenze’s experts work together with the customer, designing integrated
drive and automation solutions that simplify the realisation, production and servicing of
machines. Lenze is one of the few suppliers in the market who support the machine
builder in all phases of the machine-building process.
With more than 3,400 employees worldwide, Lenze has its own sales companies,
development sites and production facilities all over the world, as well as a network of
service partners in 60 different countries. The company's headquarters in Germany
includes a large research and development division, two full production sites and a
logistics centre for deliveries to customers in north-eastern Europe. Customers are
supported via an international network of sales engineers and application engineers.
