Kirk Wallace wrote: > On Wed, 2007-12-26 at 17:22 +0000, Lester Caine wrote: >> Geert De Pecker wrote: >>> I probably wrongly assumed that the voltage should come from the KBIC >>> board. As you say, this would indeed be a flexible solution. Will look >>> out from such a converter. My controller case is almost full, have to >>> find some room to put this one in :-) >> Don't need much space - this fits neatly on the end of the board >> http://www.farnell.com/datasheets/78477.pdf >> It's a pity that there is not a space for it actually on the board. > > Lester, > > I don't have one of these boards, so I am just being curious. Is this > DC-DC module intended to fill the +12V supply requirement or is it in > addition to? This is were it goes: > > http://cnc4pc.com/images/C11R3_5.jpg > > ? > > How much adjustment will the potentiometer give? Thanks.
http://cnc4pc.com/Tech_Docs/C11G_&_SIEG_X3_Electrical%20storybook.pdf Check out page 7. The thing to remember here is that the motor control pot on the Asian mills is at mains potential, so you need a totally isolated supply to drive that bit of the circuit. The boards I've played with a have a reasonable range on the pot, but I've only dropped to +9V from about 11V did not check how much further it would go. The NEW boards from cnc4pc don't have the +12V requirement on board, so a +5V to +12V module may be required. The on board 12V relay has been replaced with a 5V one so the whole board just runs off 5V now. -- Lester Caine - G8HFL ----------------------------- Contact - http://home.lsces.co.uk/lsces/wiki/?page=contact L.S.Caine Electronic Services - http://home.lsces.co.uk MEDW - http://home.lsces.co.uk/ModelEngineersDigitalWorkshop/ Firebird - http://www.firebirdsql.org/index.php ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
