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 ‘Pump Drives’ 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.
Manufacturing, utilities, and oil & gas companies have been gathering troves of raw data since well before the Internet of Things was a thing. For decades, machines like pumps have collected big analog data about voltage, motion, sound, acceleration, vibration, and more at the farthest reaches of the network. But industries have never had the compute power and technology to process that data and turn it into real-time, data-driven decisions at the “edge” (on premise, away from the data center and closer to the “things”) —until now.
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.
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.
The jaw geometry of the Rotex Non-Sparking consists of a conductive high-tenacity plastic that is injected onto the hub body which continues to be made of steel or other metals such as aluminium. The newly developed synthetic material prevents any static charging and is also designed to be so hardwearing that even in cases of elastomer wear out, torque will still be transmitted without any danger of sparking. As a result, maintenance work can be postponed to a convenient time frame. The failsafe and maintenance-free Rotex Non-Sparking is certified under EU directive 94/9/EC (ATEX 95) and thus deemed suitable for the use in explosive atmospheres.
Mitsubishi Electric has added dust and splash-proof versions with an IP55 protection rating to its FR-A800 series of frequency inverters. Specially designed for harsh environments and tailored to the requirements of pumps, the drives are highly robust and ideally suited for use in industrial and commercial building automation systems as well as in heating, ventilation and air-conditioning systems. The new FR-A846 series with an IP55 protection rating represents Mitsubishi Electric’s latest drive technology in the output range from 400 watts up to 160 kW. The drive’s EMC filter built in as standard ensures full compliance with the EMC Directive (EN 61800-3, 1st environment, category C2) while its DC reactor – also built in as standard – ensures full compliance with IEC 61000-3-12 for reducing and limiting harmonic currents so that separate certification is not required. The FR-A846 also has a built-in main switch version with locking option.
The ACS580 is ABB’s all-compatible general purpose drive. Through drive selection, set up, operation and maintenance, the ACS580 turns complicated to simple to control processes efficiently. The ACS580 power range is 0.75 to 250 kW and voltage range is 208 to 480 V.
The wall-mounted drive is available with IP21 enclosure and from now on the drives with IP55 enclosure for harsh environments are available as well.