Is the "ground" on your relay card truly a ground or is it a common? If it is a common - put the power supply + wire on the common and turn the relays on by "grounding" the relay output line. Some DC relays will work with either polarity, some will not.
Dave Michael Jones wrote: > Last night I finished the wiring phase of my project of replacing the > old Chopper Drivers and Vexa steppers on a D&M4S mini mill with a > Gecko G540 and KL23H284-35-4B stepper for the Z axis and 2 > KL23H276-28-4B steppers for the X and Y axis. > > EMC picked everything up quite nicely - I still have to sort out the > charge pump.. but that's just details.. I'm quite impressed with the > G540 and the new steppers.. they move FAST and QUIET. The previous > incarnation of the system was moving at a top speed of about 9ipm for > cutting and maybe as fast as 15ipm for rapids (and that was on a good > day) The new system is running up to 60ipm for rapids! > > All went VERY well with a couple of minor issues: > > 1) Moving fast is not an issue..going slow is. I haven't completely > narrowed down where it starts having issues.. but it's around 5-10 ipm. > > (Kind of off topic for this group.. but.. I'll throw it out there > anyway) > > 2) In the previous incarnation I was using a Campbell break out board > with the old chopper drivers and a 4 channel solid state relay to > control the spindle on/off (with plans for some other things like > vacuum pump and swarf-sucker) The Gecko 540 looks like it grounds the > output channel instead of sending a + signal to the output channel. > My Relay has only 1 ground, and 4 inputs. Is there a realistic way > that I can control this relay or do I need to just go get a couple of > single channel relays and rework it? > > Any ideas would be appreciated. > > Thanks, > > Michael > > > ------------------------------------------------------------------------------ > Join us December 9, 2009 for the Red Hat Virtual Experience, > a free event focused on virtualization and cloud computing. > Attend in-depth sessions from your desk. Your couch. Anywhere. > http://p.sf.net/sfu/redhat-sfdev2dev > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > > ------------------------------------------------------------------------------ Join us December 9, 2009 for the Red Hat Virtual Experience, a free event focused on virtualization and cloud computing. Attend in-depth sessions from your desk. Your couch. Anywhere. http://p.sf.net/sfu/redhat-sfdev2dev _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
