Lenze SE
Ecodesign – changeover done properly

20.05.2020 When the new ecodesign directive comes into force throughout Europe in the summer of 2021, it will be particularly important for standard asynchronous motors designed for continuous operation to achieve further improvements in energy efficiency. To ensure that the changeover is a success, Lenze SE (Hamelin, Germany) has compiled easy-to-understand basic information and a complete checklist for OEMs and machine operators as a first step.

Lenze is focusing on a new generation of future-proof motors.
© Photo: Lenze SE
Lenze is focusing on a new generation of future-proof motors.

In addition, the specialist for drive and automation technology is already launching a new motor platform on the market with the m500 series. Starting this summer there will also be an intelligent web-based planning and conversion tool.

Simple changeover

Lenze has set itself the goal of making the changeover to the new m500 motor generation as easy as possible and, with its consulting services, to further optimise the machine at the same time.

The new m500 motor platform is designed to be future-proof as a drive solution that can be used worldwide and is particularly well suited to being combined with the gearboxes of the g500 family and the i500 inverter series. In order to ensure that the changeover to the new generation is a success, particularly with regard to the ecodesign directive, Lenze will be making a software tool available from summer 2020. The material number of the old drive is sufficient - and the system uses the existing data to make a suggestion as to how the motor to be replaced can best be substituted in compliance with the standard. However, the following also applies: If you have to change over, do it consistently.

For the OEM, this means that the effort for the replacement and the design adjustments should be worthwhile in order to make the machines better with drives that are precisely matched to the respective task.

Savings in energy consumption

If the machine is viewed holistically, energy savings of 20% to 50% can be achieved in the drive system, depending on the machine type and the specific requirements. The use of components with high efficiency forms the basis for this. However, the greatest potential can be exploited if the drive design and motion profiles correspond to the actual process requirements. The use of inverters to adjust the power or feed the braking energy into the DC link are further possibilities for optimisation. Lenze's new motor platform also offers the opportunity for standardisation. The motors, which can be used all over the world, enable machinery suppliers to reduce the number of drive variants, thus significantly lowering their process costs.

In this way, a motor change is not only driven by the need to comply with the ecodesign directive, but also to generate sustainable improvements in efficiency and functionality.