Machsupport Forum
Mach Discussion => General Mach Discussion => Topic started by: ronald4418 on July 30, 2007, 01:52:52 AM
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A bit late to ask, but since I've already purchased it. I need to know what is a L/R Driver Card and what are it's shortcomings. Also what type of power supply would one use with such a card. I've studied the power supply construction manuals on Bob Campbell's website and even went as far as purchasing a hard copy from HubbardCNC.com. The problem I'm having now is that I find that they are all designed to work with a chopper style card. Also the card in question uses Unipolar Steppers.
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can you provide a link to this L/R card so I can have a look?
Hood
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The link to this card is WWW.DTLLC.COM, the card that I purchased already is the 4XCNC15B model.
Thank you for your assistance.
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The biggest shortcoming I can see is that it is constant voltage only. Meaning you will loose tourqe at higher speeds quickly.
No microsteping means that you will get a very "steppy" motion that is not as smooth as with microstepping.
What motors do you have?
I'm no expert tho.
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I ordered the card setup for half steps and the motors I ordered are from Keling Tech. The part number is listed as KL34294-43-8B.
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When I was starting out with this cnc stuff I bought a 4 axis card from DTLLC.COM also. But quickly realized that it will not work well for a cnc application as it doesn't have micro stepping and current chopping. The drives from Keling are the way to go.
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Is there anything that these cards are best suited too? Like, would they be of any use on lets say a Harbor Freight bench top lathe where microstepping would be of little use? For what I paid for it, including shipping. I'd like to find some value for my hard won dollar.