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#2
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Rev 1 G540 here and i'm a complete newbie with a completely fresh built machine. DIY power supply 45v 11a - 3No 282oz Nema 23's - should be 4.2a but they are restricted to 3.5a..... followed the instructions and ......... it works fine, first time no drama's. Set Mach3 up in mm's and had to do some thinking setting the steps per as my ballscrews are 5/8" 5tpi but it works fine! I would post the file but I ain't got power in the garage and its a major ball ache to do it just to retrieve a file. Next time i'm out there i'll try to remember |
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#4
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| Hence MAJOR ball ache! |
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#6
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| Mine works. It gets hot after a very short period of time, I neglected to add a current set resistor, but it works. Marcus and I exchanged alot of emails until he diagnosed my setup problems. I'm really happy with my G540 so far. What sort of technical issues are you grappling with Fixxitt? I cannot upload my XML to this site. Last edited by dang; 09-29-2008 at 06:18 PM. Reason: Current Set Resistor - Upload XML |
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#10
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| It was my understanding that the g540 maxed out at 3.5amps. Thus even if you had a motor that could run at 5000amps, it would only get at maximum 3.5 amps from the g540. God I hope so, as I have mine wired bi-polar parallel and in that config they can pull 4.2amps and I did not use any set resistors. |
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#11
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| Yes. The G540 maxes out at 3.5A with or WITHOUT the resistor. The thing is though, without the resistor, or with a resistor greater than 3.5K, the Idle current limiting does not work. This may cause the motors to get hotter than they should. These 3.48K resistors are a good choice and will not go over or under: 3.48KXBK-ND They only come in a pack of five. With shipping it's about $2.50 http://digikey.com/ CR. |
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