On Sat, 21 Nov 2009, Pat Lyons wrote: > Date: Sat, 21 Nov 2009 12:09:00 -0500 > From: Pat Lyons <p27...@gmail.com> > Reply-To: "Enhanced Machine Controller (EMC)" > <emc-users@lists.sourceforge.net> > To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net> > Subject: [Emc-users] Anilam linear encoder output voltage <1v... any ideas? > > Hey folks, > > just inquiring about the output of my anilam linear encoder being less than > one volt in amplitude... a full 5v is applied, but the pulses coming out > only hit like 0.3v I pulled apart the connector to find some oil in > between the pins but wiped it out and still have the same problem. > > I'd like to ask, when/if encoders begin to die or deteriorate, do they > behave like this? > I'm gonna do wiring checks to make sure there isnt a voltage drop occuring > across a single strand of crushed wire or anything... but i suspect that > quiiiiite unlikely. > thanks! > -pat
Is it possible your encoders are so old that they have bare solar cell (photodiode) outputs? You probably need a op-amp C-V converter followed by a comparator in this case (Maybe trace the original circuitry they were connected to to determine if its an encoder fault or just an old encoder with no electronics in the read head) > ------------------------------------------------------------------------------ > Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day > trial. Simplify your report design, integration and deployment - and focus on > what you do best, core application coding. Discover what's new with > Crystal Reports now. http://p.sf.net/sfu/bobj-july > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > Peter Wallace Mesa Electronics (\__/) (='.'=) This is Bunny. Copy and paste bunny into your (")_(") signature to help him gain world domination. ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
