As the legislation surrounding the efficiency of electric motors continues to tighten, the volume of variable speed drives (VSDs) in service increases. Often specified by the motor manufacturer as part of the original installation – or retrofitted to improve efficiency – the drive contains both hardware and software that is designed to work with a motor in a specific application. So, what happens if the drive ceases to operate? Brian Park, Regional Sales Manager for Scotland at Sulzer, looks at the advancing technology and the maintenance processes that need to keep pace.
Archive for the ‘Energy Efficiency’ Category
At this year’s Hannover Messe KSB is presenting a new, smart drive solution for fixed speed pumps. With the new MyFlow Drive, which is fully compatible with Industry 4.0, the fixed speed levels at the motor can be set to individual requirements. This provides the user with planning reliability as the flow rate of the pumps can be increased or decreased quickly and easily.
With the latest generation of its Simotics SD (Severe Duty) motors, Siemens is offering a digitalization package to address the future challenges facing the world of drive technology. The new design is based on a robust, compact gray cast iron lowvoltage motor with high power density. Its future-oriented energy efficiency concept is designed to provide a competitive boost to customers and users. Their extreme resistance makes the Simotics SD low-voltage motors suitable for applications in harsh environmental conditions involving exposure to dust, vibrations or aggressive atmospheres.These benefits make the motors ideal for applications in the petrochemical and general process industries.
The KSB SuPremE motor made by the Frankenthal pump manufacturer KSB has been IE5 classified since January 2017. The motor meets the requirements of IE5 (IEC/TS 60034-30-2), the highest of energy efficiency classes for variable speed electric motors; compared with IE4, motor losses are reduced by a further 20 percent.
Unlike conventional synchronous motors this drive is made without any magnetic materials such as rare earths that are categorised as critical raw materials since their extraction causes severe environmental impacts in their countries of origin.
This year’s ISH trade fair in Frankfurt will see KSB present a new 230 V version of its motor-mounted PumpDrive Eco variable speed system. Available for motor ratings ranging from 0.12 to 1.1 kW, this new version has been specially tailored to the requirements of HVAC applications.
PumpDrive Eco features sensorless differential pressure control which comes preset for use with Etaline L. All key parameters relating to pump and motor data are also set at the factory. This reduces the time required for pump set commissioning.
Alongside wireless Bluetooth modules for permanent installation supplied optionally, Bluetooth couplers are now also available. These can be plugged onto the service interface of PumpDrive Eco from the outside. This arrangement improves usability by also allowing communication with systems that do not have their own BT interface. The myPumpDrive app enables users to communicate with the system and make settings via smartphone.
Sulzer introduces an extension to the SMD axially split pump range towards lower flows and implements a higher level of standardization for cost-effective solutions and short delivery times. The SMD pump range is developed for a wide range of high-volume flow applications where raw, clean, sea, or brackish water is pumped. Such applications are water abstraction, water transport, desalination, water treatment, supply, and distribution. The pumps can also be used for firefighting, drainage, or distribution of heating and cooling media in residential and industrial systems.
The newly developed free-flow impeller for waste water pumps will be the trade fair highlight showcased by KSB at this year’s Ifat in Munich. The F-max impeller now incorporates different distances between its blades, which are arranged in groups with two small and two large distances. Thanks to this asymmetrical blade arrangement, the F-max offers impressively wide free passages ensuring that even larger rigid solids pass easily and are reliably handled by the pump.
A further focus for KSB’s engineers when designing the blades was their ability to create a swirl in the hub area. This swirling effect shifts fibres away from the impeller hub and transports them to the outside.
Expanding its extensive range of Simotics low-voltage Nema motors, Siemens adds in-line, vertical solid shaft (VSS) motors to its portfolio – the LP100 series – in the Nema Premium efficiency class. They have been specifically designed to address hight thrust pump applications and now have an extra high thrust capability allowing them to be teamed up with many pump types. The motors comply with the new Nema Premium efficiency class, the highest efficiency class required today for Nema low-voltage induction motors in the US. A range of special options is available for the series so that these motors comply with or exceed the most stringent industrial standards and can be used to address a wide range of applications.
- USP Class VI,
- 1935/2004/EC and
- FDA CFR 21.177
requirements for use in a wide variety of hygienic applications. These metal AODD pump models utilize the energy-efficient Pro-Flo Air Distribution System (ADS).
The KSB Sonolyzer app is based on an algorithm that has been integrated in PumpMeter units for five years now, of which well over 30,000 have already been sold.
The smartphone-based application does not require knowledge of the individual characteristic curve or any additional technical data of the pump set to be measured, however, and can also be used with pumps from other manufacturers. Users can utilise the app to determine the load at which each centrifugal pump driven by a fixed-speed asynchronous motor is being operated. The following data must be entered for this purpose: the motor rating, the rated motor speed, the head and the flow rate of the pump. This information can be read from the name plate affixed to every pump.