Originally Posted by ccm I'm still futzing with these motors..., I know this is an old thread... but I'm trying to run these steppers with the FET3, which has the upgraded high power mosfet's to handle up to 15amp's per phase. If I'm correct in my calculations, 4.7A per phase, 2 phases per motor... so that's 9.4A per axis that I would need which equates to 28.2Amps that I would need minimum so a 30Amp pwr supply should suffice .... right ? No matter how I've set this up, I end up with a condition like the steppers are connected wrong, just doing lots of humming and buzzing, not turning..... symptom that tells me that I've got the phases wired wrong, but I've gone backwards and forwards with a bunch of wire configurations and can't make head or tails out of it. Anyone else have this problem / issue with the FET3 Ctrllr ? Should I just bite the bullet and just get a Xylotec controller... ?
thanks,
Art |
I wouldn't get a Xylotex for those motors. You'll only get half the power out of them. When you apply power to the drives, are the motors locking up? If they are, then I'd say the drive is working correctly, and your problem is the software setup like Eric says.
I'd make sure you get your FWT working before you think about upgrading to something else.
Just for your info, with Gecko's, you would only need about a 10a power supply for 3 motors. If you read the white papers at
http://www.geckodrive.com , they state that a Gecko will only require 2/3 of the rating for 1 phase. That's for bipolar parallel. Bipolar series only needs half that, or 5a. See this:
http://www.geckodrive.com/ycom/docum...r_supplies.pdf
This applies to Gecko's only. How many wires do your motors have?