Archive For: Motors

AC Drive Applications

AC Drive Applications

When powering AC motors, the electrical supply can be at full power to run at full speed, or at variable power to run at variable speed. Applications with fluctuating loads benefit from the variable speed provided by an AC drive because less power is used at lower loads and speeds, and this article explains how ... Read More
 
Overview of AC Motor Control Options

Overview of AC Motor Control Options

Most automatic controls involve motor control in some way, especially in factory automation. Applications such as pumps, fans, robotics, and conveyors use motors. Whether general-purpose 3-phase ac motors, which are great for simple on/off systems, or the inverter-duty motors specifically designed for operation with variable frequency drives (VFDs), one could say that motors are ubiquitous in nearly ... Read More
 
How to Choose a General Purpose Motor vs. Inverter-Duty Motor

How to Choose a General Purpose Motor vs. Inverter-Duty Motor

General purpose motors have been around for many years. They are the workhorse of almost every industry. An inverter-duty motor is a much newer concept that became necessary as motors began to be driven by VFDs (inverters or AC drives). An inverter duty motor can withstand the higher voltage spikes produced by all VFDs (amplified ... Read More
 
How Do AC Motors Work?

How Do AC Motors Work?

AC motors are electric motors driven by alternating current (AC). AC motors are widely used in industry, primarily due to their high efficiency, and their ability to produce constant torque up to the rated speed. AC Motor Types The two most widely used types of AC motors are induction motors and synchronous motors. How AC ... Read More
 
What is a Stepper Motor?

What is a Stepper Motor?

A stepper motor (sometimes called a step motor or stepping motor) is a DC motor with a fixed number of steps that make a full rotation.  The motor can be commanded to move to any one of those step locations and hold position without any need for a position sensor – assuming it is properly ... Read More
 
Selecting Motors for Industrial Applications

Selecting Motors for Industrial Applications

Efficient use of motors is always important, but there are many other things to consider when specifying an electric motor. Mechanical and environmental considerations are on the list, as is the application and operation. All of these factors are important, but the application is where the selection process should start.
 
Premium Efficiency IronHorse® AC Motors

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 hp to 3 hp. The rolled steel motors  are available in 1800 and 3600 RPM models and feature 4:1 constant torque and
 
New NEMA 182TC or 184TC Frame Marathon Motors

New NEMA 182TC or 184TC Frame Marathon Motors

AutomationDirect has extended their line of Marathon motors. There are 10 New NEMA 182TC or 184TC frame Marathon motors with YxxxA catalog numbers that match frame size, horsepower and are equivalent in dimension, weight and performance to non “A” suffix models they replace. Refer to the motor drawings for any minor differences from the previous models.
 
Marathon Electric’s History of Bright Ideas

Marathon Electric’s History of Bright Ideas

Marathon Electric is a company deeply rooted in the act of invention. It has developed new products and explored new technologies since 1913. From humble beginnings, the company began its operations on an island in the Wisconsin River to produce ¼ hp washing machine motors. Today, it manufactures products using next generation power motor technology. ... Read More