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The Engineering Toolbar
The Ultimate Resource for Engineering and Technical Research. (Learn More) |
Chapter 1: What is a Drive?
By Dave Polka
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From Motors and Drives
In the most generic sense, a drive is a device that controls speed, torque, direction, and the resulting horsepower of a system. There are many different types of drives, and they will be discussed later in this chapter. For now, we will focus on the reasons for drive use in our industrial and commercial environments. To appreciate the use and benefits of any type of drive, we need to look at a generic application and determine how the system could be improved. Figure 1-1 shows a prime candidate for a variable-speed drive a conveyor in a manufacturing plant.  In Figure 1-1, we can see that the conveyor's main intent is to move products from production to the warehouse. A typical way to move products is by means of a motor. The generic motor on this conveyor operates at only one speed. With only one speed of motion, this type of manufacturing system has its drawbacks.
© 2003 ISA
Products & Services
Conveyor components and accessories are the parts that are related to and compose a conveyor system.
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Conveyor controls and monitors are used to control and monitor conveyors and conveying systems.
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Palletized conveyors are modular systems that use pallets, or trays, to carry parts from one station to the next for machining or assembly applications.
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Rolls and rollers are cylindrical components used to drive, form, press together or handle webs of sheet metal, cloth, plastic, paper or other materials.
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Conveyor sprockets (mill sprockets, engineering class sprockets, engineered sprockets) are used in conjunction with conveyor chains or conveyor belts.
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Topics of Interest
The following information will serve as a final book summary. This will assist the reader in preparing for the final "Check Your Knowledge" section that follows. For a thorough review and before the...
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A manufacturer has several conveyors in his facility. All of them have the same length, sprocket diameter, gearing, and carry identical loads. However, one of these conveyors has a 30ยบ incline. Common...
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Introduction
Basically, four different types of DC motors are used in industrial applications: series wound, shunt wound, compound wound, and permanent magnet. Several factors must be considered when...
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Protection and Ratings
Motor Protection
The typical method of starting a three-phase induction motor is by connecting the motor directly across the power line. Line starting a motor is done with a...
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The two most common types of electric motors are alternating current (ac) inductionand direct current (dc) commutated shunt- or series-wound.All electric motor configurations except one type...
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