Bill Colton
Baldor Electric Co.
Commerce, California
Technical Services Committee Member
When selecting a drive for an application, there are many technical and commercial issues to explore in arriving at a choice. The scope of this article is to consider some of the technical issues involved.
Let us assume that the motor is already in place and the customer has asked you to help select an adjustable speed drive. You have determined that the application is “constant torque.” (Constant torque is the same amount of full load RMS [root mean square] torque over the entire speed range required by the application.)
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