In many applications, metering ingredients in the pharmaceutical or food industry for example, pumps are required that not only can be precisely controlled in terms of flow rate and dosing time, but also convey the ingredients particularly gently. To enable the proven pump units of the ecodos series from LEWA GmbH to fulfill this demanding task with even more flexibility and energy efficiency in the future, the manufacturer is expanding the portfolio to include a new form of wide-range speed control. Alongside asynchronous motors and servomotors, permanent magnet synchronous motors, or PMSMs for short, are also used now. They are characterized by high energy efficiency and a control range greater than 1:200. This significantly expands the range of applications.
Lower energy costs
With PMSMs, it is no longer necessary to use several pumps for different flow rates or oversize asynchronous motors for low speeds. Since PMSMs can be designed without a fan, they remain compact and easy to clean. The latter feature predestines them for hygienic applications. High efficiency rating over the complete control range in accordance with energy efficiency class IE5+ also reduces energy costs, thus ensuring a lower total cost of ownership (TCO).
