On Dec 5, 2009, at 1:04 PM, Stephen Wille Padnos wrote: > 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.. >> > Did you start with the G540 sample config? I'm pretty sure I included > the charge pump in there. (I just cleverly added a link to the > G540.stepconf file to the wiki after noticing that it isn't included > with EMC2: > <http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl? > Advanced_Configuration> )
I did start with the sample config. According to the G540 docs, the charge pump is on pin 16. Pin 16 is set for Charge Pump in EMC, but the G540 won't come out of fault if the charge pump switch is ON. > >> 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. >> >> > What goes wrong? Vibration, stalls, loss of position ... I'm not exactly sure how to describe it.. Almost that the motors are stuttering. Sometimes below around 5ipm the dro on EMC changes, but the motor is not moving. > >> (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? >> >> > Well, until you add other things to it, just connect the G540 to the > ground pin and connect one of the "inputs" to +12 or whatever it > needs. > Later, when you want to add other devices, you'll have to replace it > or > use some extra circuitry on the G540 output. > > - Steve > > > ------------------------------------------------------------------------------ > 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
