Proper Selections of Motors

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Anonymous Poster	Proper Selections of Motors 09/26/2010 1:20 AM
	Sir, What are the parameter to select the proper motor rating for desired load ? and secondly the proper calculations of load , running as well as starting load ? Correlation between torque and load , what is safety level desired ?.and finally advantage and disadvantage between direct drive motors or gear driven motions ,please suggest .
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ducon Guru Join Date: Dec 2006 Location: Hop around Toronto, New York & Karachi Posts: 1876 Good Answers: 19	#1 Re: Proper selections of motors 09/26/2010 1:52 AM
	???? What? Is this your homework? __________________ I not only use all the brains that I have, but all that I can borrow. Woodrow Wilson
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lyn Guru Join Date: Oct 2008 Posts: 42355 Good Answers: 1693	#2 Re: Proper selections of motors 09/26/2010 4:37 AM
	I have some suggestions, but I don't think you'd like them.
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ky Guru Join Date: Jun 2006 Location: Magnetic Island, Queensland, Australia Posts: 3721 Good Answers: 74	#3 Re: Proper Selections of Motors 09/27/2010 12:10 AM
	You wait till redfred sees this. He is not a happy camper and has a bit more steam up his sleeve, I think. __________________ The Twain Has Met
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PWSlack Guru Join Date: Jan 2007 Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on. Posts: 32175 Good Answers: 839	#4 Re: Proper Selections of Motors 09/27/2010 1:54 AM
	<sigh> If the motor is under-rated for the load, it will stall, and there will be a loss in the output from the process that the motor is driving. So the motor has to be rated at or over the load requirement. Torque and load are related by the angular velocity of the drive shaft. __________________ "Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
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THOBIAS MABUGO Associate Join Date: Sep 2010 Posts: 45	#5 Re: Proper Selections of Motors 09/27/2010 5:14 AM
	1.The load torque characteristic is the first parameter to consider (TL). 2.The second parameter is the speed of driven load(w) 3.Then once you know these two parameters,you can calculate the mechanical power output(Pmech) which will lead you to the select the desired motor. 4.The speed-torque characteristics of the driven load must be compatible with the speed-torque characteristics of motor. 5.Other parameters like ambient temp,protection level will be specified by manufacturer depending on where the motor is going to be installed.That is what I know from my little knowledge of Elec. Engineering
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Anonymous Poster	#6 Re: Proper Selections of Motors 09/27/2010 7:33 PM
	ask newton.....c/o nidec Tmotor = Tload + Tinertia can't cut and paste, to many formulas cheak out nidec site excelent paper on motor or send email icjr2@yahoo.com i'll send to u
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Anonymous Poster (1); ducon (1); ky (1); lyn (1); PWSlack (1); THOBIAS MABUGO (1)

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