Thread: ebay board kits v 542 boards
(I notice that diagram has fuses on the secondary side, however I did not include them since each stepper driver already has an internal fuse to protect against over-current. Also any 'nuisance' blowing of that fuse could damage the stepper drivers.)
The colours are not universal, however there is always a clear diagram on the transformer which labels which colour is which.
overkill is my theory for future upgrades.. same with the transformer. what would you recomend for overkill..
also i read it as your stepper is rated at x volts. how is the homebrew psu regulated.. to said volts..
Never rely on colour codes being universal, not even from the same maker, just something I found out.......
Colours for the trafo linked to by Jonathan are in the PDF:
Grey and Violet are joined, Blue is Neutral, Brown is live on primary.
Orange and Black joined are 0V
Yellow and Red joined are +V on secondary
Steppers are current driven rather than voltage, the drives take care of the current regulation just need a stiff enough power supply and will drive enough volts through to maintain current.
Last edited by Musht; 05-04-2012 at 12:01 PM.
so orange and black is -v on the secondry... think i get it. how you worked that out i have no idea.. as grey is 115v and violet is 0 volts.
also on the description ie. 500va 0-35 0-35.
does this mean its 70v output.
Last edited by crossleymarko; 05-04-2012 at 09:18 PM.
By Mad Professor in forum Motor Drivers & ControllersReplies: 128Last Post: 24-01-2016, 11:12 PM
By gr8fun in forum Gantry/Router Machines & BuildingReplies: 7Last Post: 01-12-2012, 09:58 PM
By irving2008 in forum Motor Drivers & ControllersReplies: 13Last Post: 07-04-2010, 03:48 PM
By Dan Brown in forum Motor Drivers & ControllersReplies: 5Last Post: 06-01-2010, 09:37 PM
By itbookham in forum Milling Machines, Builds & ConversionsReplies: 5Last Post: 10-11-2009, 01:56 PM