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Modular OEM drives show how much energy you are saving

04 December, 2008

SPS logoAt the recent SPS/IPC/Drives show in Germany, ABB unveiled a range of customisable drive modules aimed at OEMs and panel-builders. The ACS850 drives include an automatic energy analyser, and an on-board energy-saving calculator that shows the amount of energy consumed, the drive’s load profile, and how much it energy it is saving, both in kWh and monetary terms.

The IP20-protected modules, which span ratings from 1.1–500kW at voltages from 380–500V, use an enhanced version of ABB’s Direct Torque Control technology. Improvements include: a low motor noise mode; higher output frequencies; support for asynchronous and permanent magnet motors as standard; and improved performance close to zero speed without an encoder.


The drives’ energy-saving features include an automatic control that switches off the drive’s cooling fan when it is not needed, and can also be used to control cabinet fans.

A Safe Torque Off function is built in, with other safety functions being available as options.

The drives’ user interface incorporates “assistants” that avoid the need to refer to manuals in most cases, according to ABB. These assistants cover start-up, maintenance and diagnostics functions.

A built-in Modbus serial link can be configured as a high-speed drive-to-drive link for master/follower applications. Other fieldbuses are supported as options, as are I/O extensions and various encoder interfaces.

The smallest of the ACS850 modules are 90mm wide, and the drives can be installed side-by-side in cabinets.

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