Share
Industrial Technology - Linked-in Industrial Technology - Twitter Industrial Technology - News Feed
Latest Issue
Diary and Events

Sensors & Instrumentation Live

NEC Birmingham(B40 1NT)

25/09/2019 - 26/09/2019

Sensors & Instrumentation Live will celebrate its 10 year anniversary in 2019 and the UK’s (more)

PPMA Show 2019

NEC, Birmingham(B40 1NT)

01/10/2019 - 03/10/2019

The UK’s largest ever event in the processing and packaging sector calendar. With over 350 exhibitors (more)

Advanced Engineering 2019

NEC, Birmingham(B40 1NT)

30/10/2019 - 31/10/2019

The UK's largest annual advanced manufacturing trade show, Advanced Engineering is your opportunity to (more)

Small gives big benefits

Small gives big benefits

IE4 motors save energy, but there's more in it than that for the OEM. They also afford engineers the opportunity to shrink the size and reduce the weight of their designs, and offer the advantages of advanced control, as the experts at Lafert explain.


OEMs and equipment users, particularly of continuous running products, could both benefit from the latest motor technology. The benefits include a significant reduction in running costs plus the advantages from equipment that could be made smaller and lighter. In addition, because the motors meet mandatory current and future energy efficiency standards they eliminate the need for and cost of equipment re-designs.

Market changes enable a timely re-think on the integration of motor and driven equipment. EU eco-design demands now extend to fans, pumps and compressors with the first tier of efficiency levels introduced on

1 January 2013 and the second tier scheduled for introduction on 1 January 2015. Europe's motor manufacturers are ahead of them with the now mandatory IE2 efficiency level which came into effect during the summer of 2011.

From 1 January 2015, the efficiency requirement for relevant equipment will be stepped up again when IE3 motors (or IE2 plus a variable speed drive) will become mandatory for motors from 7.5kW to 375kW. This requirement will also cover motors down to 0.75kW from 1 January 2017.

These changes occupy the time of design engineers throughout Europe. However, by looking forward, this step-by-step progress can be avoided by designing-in now existing motors that are already compliant with the higher level IE4. The obvious benefit of doing this is the elimination of expensive re-working of designs to accommodate a later minimum requirement. Whilst helping to achieve this goal, the new Lafert permanent magnet High Performance motors also offer engineers the opportunity to potentially shrink their designs, both in size and weight. This might facilitate installation and/or transportation, benefits that are attractive to the end user.

These benefits are combined with the advantages of enhanced control. This is because the new IE4 compliant motors are compatible with many standard drives, consequently performance can be optimised effectively to ensure better operation capabilities and enhanced efficiency.

The largest benefit for the foresighted designer will be to gain the competitive advantage of IE4 efficiency levels.

As a major European manufacturer, Lafert can offer a complete range of IE3 motors but for motors between 0.75 and 30kW the Group says its High Performance range represents an innovative alternative. Drawing upon the Group's experience with permanent magnet servo motors and drives, Lafert says its smaller, lighter High Performance motor solution will comply with the IE4 efficiency level.

The High Performance range has been developed by integrating the standard components of the squirrel cage induction motor with the permanent magnet rotor of the servo motor. Lafert says the major advantage with this solution is that the IEC frame size is reduced by two sizes, as the diagram opposite shows with the example of a 5.5kW motor at 3000 rpm. The system requires a sensorless drive and many standard drives can be configured for it. Another key benefit is that the efficiency remains high over a wide speed range, not just over the duty point.

Lafert has developed two configuration types: the 'HPI' which includes the drive as an integral unit with the motor, and the 'HPS' which is a more conventional stand-alone motor and drive. The HPS is particularly appealing to the OEM because they can benefit from the use of standard motor components plus the option of Lafert's motor customisation capabilities.
Download pdf

Latest news about Electric motors

Additional Information
Text styles