Automation Direct Sure-step 80100's. DougM
On Wed, May 29, 2013 at 9:40 AM, Dave <[email protected]> wrote: > What stepper drives are you currently using? I have never had any > problems with Geckos. In general, they are very well designed. > I have a G203V that I use as a test drive whenever I need to spin a > stepper motor for a machine mockup and I have really mistreated the > drive (wires crossed, jumpers falling off, overheat, etc) and it still > works! :-) > I have also had good luck with the OEM series of Parker drives as well, > but they cost a lot more than the Gecko drives and they are larger. > > Dave Cole > > On 5/29/2013 12:12 PM, doug metzler wrote: > > No VFDs, just a standard stepper + driver. This isn't running on a PC, > so > > the SBC (Rabbit) might be a bit more susceptible to noise than a PC, but > > this is the first time I've ever seen the issue as well. So I'm thinking > > the driver needs to go away :-) The Gecko will be here early next week > and > > I'm very interested in seeing if it cleans up using the existing 48V > > switcher. > > > > Thanks, > > > > DougM > > > > > > > > On Wed, May 29, 2013 at 9:03 AM, Dave<[email protected]> wrote: > > > > > >> I did a job a while back that used 2 - 20 amp, 48 volt Meanwell > >> switchers to drive four - Gecko G540 drives. > >> I used two PCs with Mesa cards to control the Gecko G540s and didn't > >> have any noise issues at all. > >> We did the customary star ground installation and I used shielded cable > >> between the Mesa cards and the Gecko G540s. > >> The cabinet was very tight but we tried to keep the power lines away > >> from the low voltage circuitry. > >> It was a custom machine with 14 positioning axes that was powered by an > >> onboard diesel generator (mobile railroad repair equipment). > >> I would be very concerned if you need to put caps on the step and > >> direction lines. That could easily degrade into an unreliable > situation. > >> Do you have a VFD in this machine?? > >> I have had issues with VFDs creating noise problems on step and > >> direction lines. To the point where I sometimes install them in a > >> different cabinet. > >> Some VFDs are incredibly noisy. > >> > >> Dave Cole > >> > >> On 5/29/2013 11:32 AM, doug metzler wrote: > >> > >>> Thanks for the advice - I did order the antek, so I can compare it to > the > >>> switcher side-by-side. My main problem is actually with RF > interference > >>> from the stepper driver feeding back into the controller and confusing > >>> > >> it. > >> > >>> A couple of caps on the step and direction lines cleaned it up but > >>> > >> that's a > >> > >>> pretty iffy fix for a production run. > >>> > >>> So power ratings might not be an issue at all, but I wouldn't want to > >>> > >> have > >> > >>> a net loss in available torque. > >>> > >>> I suppose it would be prudent to check the amount of current it's > drawing > >>> currently since the prototype machine is binding up and losing steps I > >>> could get a good indication of max current. > >>> > >>> Thanks, > >>> > >>> DougM > >>> > >>> > >>> > >>> > >>> On Wed, May 29, 2013 at 1:18 AM, Steve Blackmore<[email protected]> > >>> > >> wrote: > >> > >>> > >>> > >>>> On Wed, 29 May 2013 07:35:23 +0200, you wrote: > >>>> > >>>> > >>>> > >>>>> Doug > >>>>> I would not worry about the supply if I was you. The stepper motor > >>>>> determines at what current you are running and we mostly run at far > >>>>> > >> less > >> > >>>>> that the drive rating. The voltage will determine how fast you can go > >>>>> but if you are happy with the max speed at 48v, you will be happy > with > >>>>> the Gecko drivers as is. > >>>>> I suggest that you put the lot together and then test the system. At > >>>>> that time you can decide if you want to change. I am willing to bet > my > >>>>> sandwiches that you wont notice a single difference at all. > >>>>> > >>>>> > >>>> My experience lately. > >>>> > >>>> My stepper driven router runs on 75V, I recently decided to try a > servo > >>>> on Z. Unfortunately it has a 60V continuous rating so I wrapped an > >>>> external winding around the toroid to reduce down to 60V DC output. > >>>> > >>>> Before, all axis would run at 5m/min - after X&Y steppers would lock > at > >>>> anything over 3.8m/min so the servo came back off, as did the extra > >>>> winding and it's back to 5m/min. > >>>> > >>>> > >>>> Steve Blackmore > >>>> -- > >>>> > >>>> > >>>> > >>>> > >> > ------------------------------------------------------------------------------ > >> > >>>> Introducing AppDynamics Lite, a free troubleshooting tool for > Java/.NET > >>>> Get 100% visibility into your production application - at no cost. > >>>> Code-level diagnostics for performance bottlenecks with<2% overhead > >>>> Download for free and get started troubleshooting in minutes. > >>>> http://p.sf.net/sfu/appdyn_d2d_ap1 > >>>> _______________________________________________ > >>>> Emc-users mailing list > >>>> [email protected] > >>>> https://lists.sourceforge.net/lists/listinfo/emc-users > >>>> > >>>> > >>>> > >>> > >> > ------------------------------------------------------------------------------ > >> > >>> Introducing AppDynamics Lite, a free troubleshooting tool for Java/.NET > >>> Get 100% visibility into your production application - at no cost. > >>> Code-level diagnostics for performance bottlenecks with<2% overhead > >>> Download for free and get started troubleshooting in minutes. > >>> http://p.sf.net/sfu/appdyn_d2d_ap1 > >>> _______________________________________________ > >>> Emc-users mailing list > >>> [email protected] > >>> https://lists.sourceforge.net/lists/listinfo/emc-users > >>> > >>> > >>> > >> > >> > >> > ------------------------------------------------------------------------------ > >> Introducing AppDynamics Lite, a free troubleshooting tool for Java/.NET > >> Get 100% visibility into your production application - at no cost. > >> Code-level diagnostics for performance bottlenecks with<2% overhead > >> Download for free and get started troubleshooting in minutes. > >> http://p.sf.net/sfu/appdyn_d2d_ap1 > >> _______________________________________________ > >> Emc-users mailing list > >> [email protected] > >> https://lists.sourceforge.net/lists/listinfo/emc-users > >> > >> > > > ------------------------------------------------------------------------------ > > Introducing AppDynamics Lite, a free troubleshooting tool for Java/.NET > > Get 100% visibility into your production application - at no cost. > > Code-level diagnostics for performance bottlenecks with<2% overhead > > Download for free and get started troubleshooting in minutes. > > http://p.sf.net/sfu/appdyn_d2d_ap1 > > _______________________________________________ > > Emc-users mailing list > > [email protected] > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > > > > > ------------------------------------------------------------------------------ > Introducing AppDynamics Lite, a free troubleshooting tool for Java/.NET > Get 100% visibility into your production application - at no cost. > Code-level diagnostics for performance bottlenecks with <2% overhead > Download for free and get started troubleshooting in minutes. > http://p.sf.net/sfu/appdyn_d2d_ap1 > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ Introducing AppDynamics Lite, a free troubleshooting tool for Java/.NET Get 100% visibility into your production application - at no cost. Code-level diagnostics for performance bottlenecks with <2% overhead Download for free and get started troubleshooting in minutes. http://p.sf.net/sfu/appdyn_d2d_ap1 _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
