Brother Gearmotors, a division of Brother International Corporation that offers a wide range of ultra-reliable, sub-fractional AC gearmotors and reducers for the food & beverage, packaging and material handling industries, will display samplings from its premium gearmotors portfolio at PACKEX Toronto May 16 to 18 at the Toronto Congress Centre. Located at Booth 1182, Brother Gearmotors […]
AC Motors
Lafert displays integrated industry and Automation 4.0 at Hannover Messe
Hannover Messe 2017 is currently running through 28 April in Germany — with more than 250,000 visitors and 6,500 exhibitors from numerous industrial sectors. “We’ll present the new generation of IE3 NEMA Premium and EISA Asynchronous Motors, intended for the North American market, with a new, exclusive design that allows for ever-increasing performance levels,” said Holger Klein, Country Sales […]
Trends in electric motors part one: Market shifts towards smart solutions
This year in motor design there’s been an uptick in three trends. Disposable medical devices, new consumer products, and the automation of humbler tasks are driving demand for affordable and miniature-motor options. (Read more about motor miniaturization in the second installment of this two-part Motion Trends series on electric motors here.) A related trend towards […]
FAQ: How are PID parameters configured for variable frequency drives?
Using proportional-integral-derivative (PID) control with variable frequency drives (VFDs) is common when a process set point—such as temperature, pressure, flow, or speed—needs to be precisely controlled. In fact, many VFDs are now supplied with an integrated PID controller. PID controller terms Configuring the PID parameters for fast response and minimum overshoot (referred to as tuning […]
What are low voltage AC drives and why should you use them?
Despite the benefits of using medium voltage AC drives for high horsepower motors, low voltage technology holds a dominant place in the AC drive market, for both low- and high-power applications. There are multiple reasons for this, not the least of which are cost and availability. Medium voltage drives have historically been custom-engineered solutions, with low-volume production, […]
FAQ: What are medium voltage AC drives, and where are they used?
Recall that the basic equation for electric power is P = VI, or, power = voltage multiplied by current. This means that for a given power level, voltage and current are inversely proportional. In other words, the higher the supply voltage, the lower the current draw will be. For AC motors that are used in high-power applications, […]
Lafert high-performance standalone (HPS) permanent-magnet ac motors boost design efficiency
HPS Series permanent magnet (PM) synchronous ac motors from Lafert North America deliver IE4 Super Premium energy efficiency while reducing motor size and weight by 50% in some cases. HPS Series motors combine the mechanical design of standard induction motors with the performance and efficiency of brushless servo motors. The TEFC motor design results from decades of […]
FAQ: How do drives affect cogging in AC motors?
If you put two magnets in close proximity to each other, you know that they’ll experience an attractive force when opposite poles are near each other and a repulsive force when like poles are near. If you hold one magnet stationary and rotate the other, pole-over-pole, the rotating magnet will tend to stop when its […]
AutomationDirect adds more premium efficiency IronHorse AC motors
AutomationDirect’s IronHorse line of general-purpose three-phase motors now includes the MTRP-series 56HC-frame premium efficiency motors available from 1 to 3 hp. The rolled steel motors are available in 1,800 and 3,600 rpm models and feature 4:1 constant torque and 10:1 variable torque speed ranges, TEFC frames, cast aluminum end bells and removable mounting bases. MTRP-series […]
How to use servo drives with asynchronous (induction) motors?
With high construction costs of rare earth permanent magnet synchronous servo motors, asynchronous (induction) motors are more acceptable, when possible. By Craig Dahlquist • Application Engineer at Lenze Americas One way to get servo control of an asynchronous motor (on 400 to 480 Vac supply voltage) is to use a conventional 230/400 or 230/460 Vac (delta/wye connection) […]
