Besides load torque, acceleration torque, speed, and load inertia, overlooking certain sizing parameters during the motor sizing process can literally make or break your machine.
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Now that we understand the calculations behind load torque and load inertia, we're two steps closer to motor selection. You might be wondering why I separated load torque and acceleration torque calculations. That's because in order to calculate for acceleration torque, load inertia and speed must be calculated first.
Proper sizing of a motor requires that 3 criteria must be met: torque, load inertia, and speed. For the first part of this Motor Sizing Basics series, I will be explaining what load torque is, how to calculate it for specific application examples, and how it fits into the torque requirement for the application.
An AC motor can be simple to use, but its speed changes according to the size of the load or amount of voltage supplied. For an application where keeping a uniform speed is important, there is another type of motor that can improve performance.
The BLH Series compact BLDC motors and drivers have been around for a long time, and there is a good reason. Customers seem to favor the combination of a highly efficient, compact motor and a light weight board type driver that is easy to use. Having a high torque, flat style hollow shaft gearhead as an option also helps in increasing torque as well as minimizing footprint.
What motors do you use for pumps? For variable speed pump applications that typically use 3-phase AC induction motors with variable frequency drives (VFDs), there is another type of motor that can transfer fluids more consistently and help reduce footprint.
Historically, worm gears have been known as the most common type of gears used in a right angle gearhead. Their low cost and robust construction have been sufficient for general purpose applications. However, they are inefficient at slower speeds (higher reduction ratios), produce a lot of heat, take up a lot of space, and require maintenance. As efficiency standards became increasingly important globally, another type of gear is being adopted for right angle gearheads.
The MEXE02 support software is a universal motion control and monitor software used with many products from Oriental Motor, such as the stepper motor drivers from AZ Series, AR Series, and RK2 Series, or brushless DC motor drivers from BLE2 Series and BX2 Series. This post is useful for first-time users to gain a quick understanding of the software and what it can do.
For applications where torque needs to be limited, an external mechanical torque limiter is typically required in addition to the motor system. When the torque exceeds the limit, the torque limiter will either decouple the load or limit the torque by slipping. An electric motor system's built-in torque limit function can simplify machine designs by eliminating this extra component.