Hello All, Happy Thanksgiving one day early!
To protect sensitive electronics in machine tool controls (and many other places) put an UPS (Uninterruptible Power Supply) between the power source and the sensitive electronics. Most DC power supplies are converting 110 VAC to whatever DC voltages are needed. The UPS unit is easy to put into the circuit and for most machine tool controls will cost about $150.00. A higher joule rating provides better protection. Problem power, toasted UPS unit, $150.00 replacement expense purchasing the item at the local big box computer store and the system is up and running again. Relatively inexpensive and quick recovery. Have a good day, Jim Fleig CNC Services 585 975-9618 On Nov 24, 2010, at 12:47 PM, Stuart Stevenson <stus...@gmail.com> wrote: > Gentlemen, > Having researched the subject of isolating from the grid to try to > convert > my shop I will interject a comment or two. > The KWH cost of utility power is amazingly cheap compared to > generating it > locally. > The KWH cost is not the only cost. At least once a year we > experience a > power glitch of the form necessary to harm sensitive electronics > (and at > times other things connected to the power lines). > We have ground devices to attempt to shield our machine controls. > These > shield devices do not always work. I do not know how much the added > cost > truly is but the aggravation is tremendous. When you see the lights > flicker > bright or dim you cringe. If a machine stops you do not know if it > will > restart. Many times one of the machines will not restart. The remedy > for > restart is usually a board replacement. The board is not cheap. The > downtime > is not cheap. How do you quantify it? > How do you know if the next board you replace was not damaged by > the same > event that killed the previous board? We have replaced all four > boards in > each of three machines in a year. This replacement came after a > particularly > damaging power fluctuation. > I would definitely like to be isolated from the grid. > thanks > Stuart > > -- > dos centavos > --- > --- > --- > --------------------------------------------------------------------- > Increase Visibility of Your 3D Game App & Earn a Chance To Win $500! > Tap into the largest installed PC base & get more eyes on your game by > optimizing for Intel(R) Graphics Technology. Get started today with > the > Intel(R) Software Partner Program. Five $500 cash prizes are up for > grabs. > http://p.sf.net/sfu/intelisp-dev2dev > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ Increase Visibility of Your 3D Game App & Earn a Chance To Win $500! Tap into the largest installed PC base & get more eyes on your game by optimizing for Intel(R) Graphics Technology. Get started today with the Intel(R) Software Partner Program. Five $500 cash prizes are up for grabs. http://p.sf.net/sfu/intelisp-dev2dev _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
