When you set off looking for an industrial motor, you MUST get it right. You need to understand key aspects of motors including their types, the nature of application, mechanical and environmental issues. To help you select the ideal motor, here are three main questions that you should ask and get correct answers.
Does your Application Require Constant Speed?
If your industrial application requires constant speed, you should go for the motor that operates with little or no acceleration/ deceleration ramps. This system is applied using special across-the-line on/off type of control. Both AC motors and DC motors are okay for constant speed operations. In the case of DC motors, they provide optimum torque at zero speed, and further have a very large installed base. Unlike the DC motors, AC designs are preferred for constant speed operations in heavy because of high power factor. Some of the applications that require constant speed operations and motors include conveyors, lifts and sewing machines.
What are the Motor’s Current and Voltage Ratings?
A motor is powered by electric current. If current is too much, there is a risk of damaging the motor system. To select the right motor, you need to establish both the stall and operating current. The stall current is the current needed by the motor when operating at stall speeds. However, the operating current is what the motor draws for typical torque. To increase the efficiency, motors should also have effective heat sinks.
Voltage in the motor is used to keep the current flowing only in one direction. The higher the voltage in a motor, the higher the torque it generates. The voltage rating on motors reflects the most efficient voltage when the motor is running. But you should avoid using excess voltage because it can damage the coils.
What is the Right Velocity?
Velocity or is given in terms of rotation per minute (RPM). The rule of the thumb when it comes to RPM is that motors operate more efficiently when running at highest speeds. However, this is not needed when you are using gears to amplify or reduce torque. Therefore, if you want to use gears, it is important to factor the targeted torque and speed. Consider working with an expert when using gears.
If your industrial system requires the use of motors, it is prudent to carefully understand the application. Besides getting answers to the above questions, it is also crucial to factor durability and ease of maintenance. Do not just but any motor, only select the best.