In many functions, metering elements in the pharmaceutical or meals industry for example, pumps are required that not only may be precisely managed in phrases of move fee and dosing time, but in addition convey the ingredients significantly gently. To allow the confirmed pump items of the ecodos collection from LEWA GmbH to satisfy this demanding task with even more flexibility and power efficiency in the future, the manufacturer is increasing the portfolio to include a brand new type of wide-range velocity control. Alongside asynchronous motors and servomotors, permanent magnet synchronous motors, or PMSMs for short, are also used now. They are characterized by excessive energy effectivity and a control vary larger than 1:200. This considerably expands the range of applications. With PMSMs, it’s now not essential to use several pumps for various circulate charges or oversize asynchronous motors for low speeds. Since PMSMs can be designed and not using a fan, they proceed to be compact and straightforward to clean. ราคาpressuregauge for hygienic purposes. High effectivity score over the whole control vary in accordance with vitality efficiency class IE5+ also reduces energy prices, thus guaranteeing a decrease total value of possession (TCO).
The diaphragm metering pumps in the LEWA ecodos collection are particularly nicely fitted to purposes within the meals or pharmaceutical industries. All supplies involved with the fluids used within the pump units meet the FDA and USP Class VI requirements, and the EU directives for the meals trade. In the hygienic version, for instance, the pump head is made from PP or electropolished stainless steel with a floor roughness < zero.5 µm. This facilitates cleansing of the surfaces involved with the product.
The motor technologies used thus far have had to make sacrifices: “For traditional asynchronous motors whose rotor is a squirrel-cage rotor, the management vary stays restricted to 1:10 (1:50 is feasible in particular person cases). With encoder feedback, important enlargement is possible,” mentioned Maurice Wirkner, an utility supervisor at LEWA. “In addition, the drive is comparatively inefficient outside the rated speed range – particularly at low speeds. This requires the drive to be oversized, which will increase operating prices.” Servomotors are optimized for highly dynamic necessities and in addition cover the entire control vary (1-210 pump strokes), however, they are costlier to purchase and as properly as, require a servo inverter for management.
Wide-range velocity control with permanent magnet synchronous motor extends the range of purposes
LEWA has now expanded its personal portfolio with a drive know-how that does not have these weaknesses. “Unlike the asynchronous motor, the rotor of this drive consists of everlasting magnets and rotates synchronously, i.e. with out load-dependent slip,” Wirkner defined. “Among different issues, it options an excessive control vary, which frequently makes the usage of a number of pumps for various flow rates unnecessary.” Particularly in the case of a number of pumps, an additional guide stroke adjustment or electrical stroke adjustment may be distributed with and the required move rate could be realized by velocity control only. The PMSM also has a relentless torque. The full torque may be applied from engine speed zero rpm (standstill) up to the rated pace of the motor. This ensures particularly clean and gentle system start-up, since each process may be began with a pump capability of 1 percent instead of the usual 10 %.
It also features a excessive short-term overload capability, which allows a drive design without oversizing for the starting torque. As a result, smaller, extra cost-efficient sizes may be realized than with classic drives. “Like the asynchronous motor, the PMSM could be controlled by way of a regular frequency converter, so users can rely on widespread elements,” Wirkner defined. “With the servomotor quite the opposite, it will be essential to buy costly servo controllers.” The compact drive could be easily cleaned as a outcome of its fanless design and presents high IP protection. If required an extra conversion process – known as nsd tupH – can be applied to the aluminum body for FDA requirements. เครื่องมือที่ใช้วัดความดันเลือด makes the floor extraordinarily resistant and even simpler to scrub – ideal for purposes with stringent hygienic requirements, similar to aroma metering in the meals industry or additive dosing within the pharmaceutical trade.
IE5+ PMSM permits cost reduction and decentralized options
The sole limitation of the presently used PMSM is that it is only obtainable for protected areas. “Thanks to wide-range speed management with IE5+ PMSM, we are able to meet the increasing buyer calls for for a wider adjustment range and lower energy consumption, in addition to total prices,” stated Wirkner to sum up the state of affairs. “The matter of power efficiency specifically is changing into more and more essential for our clients. A decentralized solution by which the frequency converter is installed instantly on the PMSM, can now be carried out with Getriebebau NORD GmbH & Co. KG, LEWA’s motor associate for PMSM, too.”
LEWA GmbH was based in 1952 by Herbert Ott and Rudolf Schestag as a household enterprise and is at present the world’s main producer of metering pumps and course of diaphragm pumps as well as complete metering packages for process engineering. Headquartered in Leonberg, the corporate developed into a world group in only a few many years. Since 2022, the company has been part of the Atlas Copco Group, a globally main Swedish manufacturer of compressors, vacuum solutions, generators, pumps, energy instruments and meeting methods. Together with the model new proprietor, LEWA will further expand the economic pumps business. As a research and manufacturing company, LEWA develops technologies and provides options for the huge array of functions among its prospects. Its products are used primarily within the chemical trade, the cosmetics business, prescribed drugs and biotechnology, food and beverage industry and energy utilities in addition to within the production of plastics, detergents and cleaners. Additional software areas embrace refineries and petrochemicals, the oil and fuel trade, and fuel odorization. LEWA currently employs round 1,200 individuals and owns 14 subsidiaries around the world alongside having eighty representatives and gross sales places of work in additional than 80 nations.
Image materials:
Image ID: LEWA ecodos LED3 WBR.jpg
Caption: LEWA ecodos LED3 with PMSM
Source: LEWA GmbH
Image ID: ecodos_NORD-IE5plus_opt.jpg
Caption: The PMSMs newly added to the portfolio function a control range of 1:200, enabling a wider vary of applications to be covered by the same drive or pump.
Source: LEWA GmbH
Image ID: Baby food.jpg
Caption: The PMSM also has a continuing torque, i.e. all the torque can be referred to as up at velocity 0 rpm. This ensures particularly clean and delicate system start-up, since each process may be started with a conveyance rate of 1 p.c instead of the usual 10 %. (Example: Metering omega three fatty acids within the production of child food)
Source: Adobe Stock
Image ID: Torque.jpg
Caption: In contrast to the ASMs proven, the fixed torque of the PMSM allows steady operation at low speeds. Oversizing for the required pump beginning torque has turn into unnecessary as a result of high overload capability of the PMSM.
Source: LEWA GmbH
Image ID: Baugrößen_530PWebJPG.jpg
Caption: Like the asynchronous motor, the PMSM can be controlled by way of a regular frequency converter (NORD, Danfoss, and so on.) with special parameterization, so that users can depend on common parts.
Source: Getriebebau NORD GmbH & Co. KG
Image ID: NORDAC ON Wandmontage BG2_806x502Web.jpg / Nordac ON+ with frequency converter on an IE5 PMSM.jpg
Caption: Decentralized options during which the frequency converter is installed immediately on the PMSM are also already potential with the PMSMs chosen by LEWA.
Source: Getriebebau NORD GmbH & Co. KG
Image ID: Functional testing.jpg
Caption: As early as 2020, LEWA carried out initial functional testing with the NORD PMSM prototype and an ecodos pump on the pump take a look at bench. In the lower pace range above all, the PMSM successfully demonstrated some great advantages of constant torque: the ecodos check pump could be driven in a spread of 1:480 as much as 5 bar.
Source: LEWA GmbH
More data for readers/viewers/interested events:
LEWA GmbH
Ulmer Straße 10, 71229 Leonberg, Germany
Phone: +49 7152 14-0, Fax: +49 7152 14-1303
Email: lewa@lewa.de
Internet: www.lewa.de
More info for members of the press
ABOPR Pressedienst B.V.
Stefan-George-Ring 19, 81929 Munich, Germany
Phone: +49 89 500315-20, Fax: +49 89 500315-15
Email: info@abopr.de
Internet: www.abopr.de
Share