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.
Posts Tagged ‘drive’
The MW500 frequency inverter with decentralised design has been developed for space-saving solutions, such as directly motor mounted or adjacent to the motor on the wall. As a result, the need for lengthy cables and switch cabinets is eliminated. MW500 is robust with an IP66 protection rating. It can withstand high overloading of 150% for 60 seconds every 10 minutes, and operate in temperatures up to 40°C (wall installation) and 50°C (motor installation). With increased ruggedness compared to alternative technologies, it provides reliable operation over a long service life. The inverter is designed to operate asynchronous motors in the power range 0.75 to 7.5 kW, and is offered as three variants for a mains voltage of 380 to 400V (A: 1.1 to 1.5 kW, B: 2.2 – 4 kW and C: 5.5 – 7.5 kW), and for 200 to 240V, as variant A (0.75 to 1.1 kW). It is ideal for many pump applications.
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.
The pump monitoring system CM-1000 Series is now available with a new active valve control functionality. This option delivers energy savings of potentially up to 85 percent. It also reduces maintenance by up to 50 percent and provides safer operation, short term return-on-investment and long term savings for total ownership.
At the Rotex® S-H the hubs are mechanically separated by „cracking“ on purpose. An uneven surface with a positive fit is the result making sure for an exact position of the two halves during assembly. The contoured, uneven cracked surfaces ensure an ideal centering of the hub halves. This guarantees that the hub or the connection of the two hub halves, respectively, is not weakened by the separation by cracking. The „cracked“ hub is screwed in place in block assembly and makes sure that during operation there is no negative impact on the strength of the coupling.
The latest version of the “motor-mounted” speed control system for centrifugal pumps was designed specifically to cater to heating and air-conditioning applications. The system makes it possible to reduce energy costs by matching pump output to actual demand. The parameters of PumpDrive Eco are set at the factory based on the specific pump and motor data. This reduces the time required for commissioning the unit.
Plant and maintenance engineers often seem to have an intuitive nose for trouble, so are able to predict pending problems with machinery and take pre-emptive action to prevent them. It is not the result of magical powers, rather of long experience with plant and machinery. Bill Bertram of motor maker Marathon Electric explains how different motor sounds can be interpretedÖ: “If you walk around a piece of plant that is running, you will hear it making a noise. If you listen carefully you will be able to pick out individual elements within the overall sound. For instance, you may be able to hear a fan whirring, a pump thumping and a conveyor rumbling.”
With the Sinamics G120P Cabinet, Siemens Drive Technologies Division is now able to provide an inverter cabinet unit especially adapted to pumps, fans, and compressors. The power spectrum of the existing Sinamics G120P series is thus extended to 200 kW. In line with the Integrated Drive Systems strategy, the drive is optimally adapted to operation with Simotics severe-duty and flexible-duty motors. For example, the inverter output currents have been adapted to the motor rated currents and the motors to the rated pulse frequencies of the inverters. Because the components interact as an integrated drive system, the voltage is optimally utilized and the noise level of the motor is also reduced by 4 dB. The efficiency of the overall system is 98 percent. The new inverter also has application-specific functions that enable economical operation of pumps.
With its Sinamics V20 inverter, the Siemens Drive Technologies Division presents a new single-axis drive for basic applications. The compact and rugged inverter excels with short commissioning times, straightforward operation and high cost-effectiveness. The Sinamics V20 comes in four sizes to cover the performance range from 0.12 to 15 kW and is used to operate pumps, fans, compressors and conveyor systems.