Re: [Emc-users] Question on DM860 stepper drivers

It's mostly the same firmware on the full range (I use a lot of the DM422). the protuner utilities work with all model (a bunch of different program, one per model) The autotune (S4 dip switch) only tune current loop (PI), but most of my test showed way too aggressive tuning, making this

Re: [Emc-users] Question on DM860 stepper drivers

On Friday 22 April 2016 14:46:19 Dave Cole wrote: > On 4/22/2016 2:02 PM, Gene Heskett wrote: > > On Friday 22 April 2016 13:41:33 Todd Zuercher wrote: > >> Oh well, worth a look. Craigslist searches are nice that they are > >> relatively local. The down side, if your local isn't suited for >

Re: [Emc-users] Question on DM860 stepper drivers

On 4/22/2016 2:02 PM, Gene Heskett wrote: > On Friday 22 April 2016 13:41:33 Todd Zuercher wrote: > >> Oh well, worth a look. Craigslist searches are nice that they are >> relatively local. The down side, if your local isn't suited for the >> search you won't find much. > Thats true, so I

Re: [Emc-users] Question on DM860 stepper drivers

On Friday 22 April 2016 13:41:33 Todd Zuercher wrote: > Oh well, worth a look. Craigslist searches are nice that they are > relatively local. The down side, if your local isn't suited for the > search you won't find much. Thats true, so I expanded my search earlier but misseed this one because

Re: [Emc-users] Question on DM860 stepper drivers

- Original Message - From: "Gene Heskett" <ghesk...@wdtv.com> To: emc-users@lists.sourceforge.net Sent: Friday, April 22, 2016 1:20:40 PM Subject: Re: [Emc-users] Question on DM860 stepper drivers BTW, craigslist bombed on a lathe search, $2000 for a South Bend 14x30 that had to be a

Re: [Emc-users] Question on DM860 stepper drivers

On Friday 22 April 2016 11:59:09 Dave Cole wrote: > On 4/21/2016 10:05 PM, Gene Heskett wrote: > > On Thursday 21 April 2016 18:59:36 andy pugh wrote: > >> On 21 April 2016 at 23:45, Gene Heskett wrote: > >>> Are there such beasts available, perhaps in a .750" or 20mm bore? >

Re: [Emc-users] Question on DM860 stepper drivers

On 4/21/2016 10:05 PM, Gene Heskett wrote: > On Thursday 21 April 2016 18:59:36 andy pugh wrote: > >> On 21 April 2016 at 23:45, Gene Heskett wrote: >>> Are there such beasts available, perhaps in a .750" or 20mm bore? >>> What I've found didn't have the stroke. >> Bicycle

Re: [Emc-users] Question on DM860 stepper drivers

. - Original Message - From: "Gene Heskett" <ghesk...@wdtv.com> To: emc-users@lists.sourceforge.net Sent: Friday, April 22, 2016 5:32:46 AM Subject: Re: [Emc-users] Question on DM860 stepper drivers On Thursday 21 April 2016 23:29:21 Todd Zuercher wrote: > What length

Re: [Emc-users] Question on DM860 stepper drivers

On Friday 22 April 2016 05:29:08 andy pugh wrote: > On 22 April 2016 at 03:05, Gene Heskett wrote: > >> Bicycle pump? :-) > > > > I haven't seen one of those in 50 years on this side of the pond. > > I assume that they still exist, unless the US has switched back to > solid

Re: [Emc-users] Question on DM860 stepper drivers

t least capable of putting my GMC down on its snubbers. > - Original Message - > From: "Gene Heskett" <ghesk...@wdtv.com> > To: emc-users@lists.sourceforge.net > Sent: Thursday, April 21, 2016 6:45:49 PM > Subject: Re: [Emc-users] Question on DM860 stepper dr

Re: [Emc-users] Question on DM860 stepper drivers

On 22 April 2016 at 03:05, Gene Heskett wrote: >> Bicycle pump? :-) > > I haven't seen one of those in 50 years on this side of the pond. I assume that they still exist, unless the US has switched back to solid rubber tyres. A track pump would work:

Re: [Emc-users] Question on DM860 stepper drivers

ceforge.net Sent: Thursday, April 21, 2016 6:45:49 PM Subject: Re: [Emc-users] Question on DM860 stepper drivers On Thursday 21 April 2016 11:32:25 andy pugh wrote: > On 21 April 2016 at 16:17, Brent Loschen <brent.losc...@gmail.com> wrote: > > I'm curious if anyone has comp

Re: [Emc-users] Question on DM860 stepper drivers

That pipe is commonly known as the down tube. :) It runs from the bottom bracket to the bottom of the head tube. The others tubes are called; Head tube, it holds the head set for the steerer tube Seat tube, runs down from the seat post to the bottom bracket Top tube, runs horizontally between

Re: [Emc-users] Question on DM860 stepper drivers

On Thursday 21 April 2016 18:59:36 andy pugh wrote: > On 21 April 2016 at 23:45, Gene Heskett wrote: > > Are there such beasts available, perhaps in a .750" or 20mm bore? > > What I've found didn't have the stroke. > > Bicycle pump? :-) I haven't seen one of those in 50

Re: [Emc-users] Question on DM860 stepper drivers

On 4/21/2016 5:59 PM, andy pugh wrote: > On 21 April 2016 at 23:45, Gene Heskett wrote: >> Are there such beasts available, perhaps in a .750" or 20mm bore? What >> I've found didn't have the stroke. > Bicycle pump? :-) > Bimba air cylinder 3/4" diameter double acting can have

Re: [Emc-users] Question on DM860 stepper drivers

On 21 April 2016 at 23:45, Gene Heskett wrote: > Are there such beasts available, perhaps in a .750" or 20mm bore? What > I've found didn't have the stroke. Bicycle pump? :-) -- atp "A motorcycle is a bicycle with a pandemonium attachment and is designed for the especial

Re: [Emc-users] Question on DM860 stepper drivers

On Thursday 21 April 2016 11:32:25 andy pugh wrote: > On 21 April 2016 at 16:17, Brent Loschen wrote: > > I'm curious if anyone has compared moving mass (pulley/cable/mass) > > vs springs for counter weighting a G0704. Other than ease of > > implementation, space

Re: [Emc-users] Question on DM860 stepper drivers

On Thursday 21 April 2016 11:17:05 Brent Loschen wrote: > On 4/21/2016 7:09 AM, Gene Heskett wrote: > > On Thursday 21 April 2016 04:04:16 Gregg Eshelman wrote: > >> Belt drive from the stepper? If there's enough metal in the pulley, > >> drill and tap three holes into the face then get six

Re: [Emc-users] Question on DM860 stepper drivers

> On 21 April 2016 at 16:17, Brent Loschen wrote: > > I'm curious if anyone has compared moving mass (pulley/cable/mass) vs > > springs for counter weighting a G0704. Other than ease of > > implementation, space requirements, etc., any real world > >

Re: [Emc-users] Question on DM860 stepper drivers

2016 11:17:05 AM Subject: Re: [Emc-users] Question on DM860 stepper drivers McMaster has a nice selection of 3' long springs of various OD's, wire diameters, and spring rates. They seem reasonably priced (~$5-$10) in sizes likely used for this type of application - http://www.mcmaster.com/#extension-

Re: [Emc-users] Question on DM860 stepper drivers

On 21 April 2016 at 16:17, Brent Loschen wrote: > I'm curious if anyone has compared moving mass (pulley/cable/mass) vs > springs for counter weighting a G0704. Other than ease of > implementation, space requirements, etc., any real world > advantages/disadvantages of

Re: [Emc-users] Question on DM860 stepper drivers

On 4/21/2016 7:09 AM, Gene Heskett wrote: > On Thursday 21 April 2016 04:04:16 Gregg Eshelman wrote: > >> Belt drive from the stepper? If there's enough metal in the pulley, >> drill and tap three holes into the face then get six flanged rubber >> bushings. Mill out a circle of metal with three

Re: [Emc-users] Question on DM860 stepper drivers

On Thursday 21 April 2016 04:04:16 Gregg Eshelman wrote: > Belt drive from the stepper? If there's enough metal in the pulley, > drill and tap three holes into the face then get six flanged rubber > bushings. Mill out a circle of metal with three holes. Put bushings in > holes, bolts through

Re: [Emc-users] Question on DM860 stepper drivers

: Gene Heskett <ghesk...@wdtv.com> To: emc-users@lists.sourceforge.net Sent: Wednesday, April 20, 2016 5:19 AM Subject: Re: [Emc-users] Question on DM860 stepper drivers On Wednesday 20 April 2016 05:23:22 Sarah Armstrong wrote: > simply drop the high microstepping , you dont need

Re: [Emc-users] Question on DM860 stepper drivers

Hi, One of the advantages of Geckodrives over other drives is that they morph from microstepping to full stepping after the speed gets above a a few RPS. That way, at low speed you get very smooth motion, and at high speed the=re is no torque lose due to microstepping. BTW, microstepping

Re: [Emc-users] Question on DM860 stepper drivers

On Wednesday 20 April 2016 11:40:44 Jon Elson wrote: > On 04/20/2016 06:04 AM, Gene Heskett wrote: > > Halscope shows a very small amplitude ripple, perhaps 5% > > of the instant output at pid.z.output > > Look at PID..error, it will magnify the deviation. > Although, I guess, if the PID output

Re: [Emc-users] Question on DM860 stepper drivers

On Wed, 20 Apr 2016, Gene Heskett wrote: > Date: Wed, 20 Apr 2016 14:13:38 -0400 > From: Gene Heskett <ghesk...@wdtv.com> > Reply-To: "Enhanced Machine Controller (EMC)" > <emc-users@lists.sourceforge.net> > To: emc-users@lists.sourceforge.net > Su

Re: [Emc-users] Question on DM860 stepper drivers

On Wednesday 20 April 2016 11:36:58 Jon Elson wrote: > On 04/20/2016 03:20 AM, Nicklas Karlsson wrote: > >> Greetings; > >> > >> One of the things I am noticing, when running this crippled Z drive > >> at various speeds, is that up to about 3/4 rps at its shaft, it > >> moves dead silently, but

Re: [Emc-users] Question on DM860 stepper drivers

rom: "Gene Heskett" <ghesk...@wdtv.com> To: emc-users@lists.sourceforge.net Sent: Wednesday, April 20, 2016 1:03:13 PM Subject: Re: [Emc-users] Question on DM860 stepper drivers On Wednesday 20 April 2016 10:25:47 Claude Froidevaux wrote: > Hi, > > Your are most probably in

Re: [Emc-users] Question on DM860 stepper drivers

On Wednesday 20 April 2016 11:00:57 Thomas Powderly wrote: > if > the stepper is direct coupled to screw > > can a damper be put on the far end of the transmission > ( end of leadscrew vs end of motor)? > > may not be optimal but may help > > ( hmmm maybe a belt drive is auto damped ? ;-) > >

Re: [Emc-users] Question on DM860 stepper drivers

On Wednesday 20 April 2016 10:25:47 Claude Froidevaux wrote: > Hi, > > Your are most probably in some mechanical resonance. You can try to > tune the DM860 for this, using the tools from leadshine "protuner" > > http://www.leadshine.com/productdetail.aspx?type=products=ste

Re: [Emc-users] Question on DM860 stepper drivers

On Wednesday 20 April 2016 07:38:39 John Thornton wrote: > Is that a Leadshine drive? I thought they were pretty good. I do like > my G203V's they run smooth and fast. > > http://www.geckodrive.com/geckodrive-step-motor-drives/g203v.html > > JT Where do you program the microsteps it uses? Ah,

Re: [Emc-users] Question on DM860 stepper drivers

On 04/20/2016 06:04 AM, Gene Heskett wrote: > Halscope shows a very small amplitude ripple, perhaps 5% > of the instant output at pid.z.output Look at PID..error, it will magnify the deviation. Although, I guess, if the PID output is only varying by 5%, then the step rate should not be varying

Re: [Emc-users] Question on DM860 stepper drivers

On 04/20/2016 03:20 AM, Nicklas Karlsson wrote: >> Greetings; >> >> One of the things I am noticing, when running this crippled Z drive at >> various speeds, is that up to about 3/4 rps at its shaft, it moves dead >> silently, but by 2 rps, its rattling tools off the table, exactly as if >> is was

Re: [Emc-users] Question on DM860 stepper drivers

if the stepper is direct coupled to screw can a damper be put on the far end of the transmission ( end of leadscrew vs end of motor)? may not be optimal but may help ( hmmm maybe a belt drive is auto damped ? ;-) tomp On 04/20/16 22:25, Claude Froidevaux wrote: > Hi, > > Your are most

Re: [Emc-users] Question on DM860 stepper drivers

Hi, Your are most probably in some mechanical resonance. You can try to tune the DM860 for this, using the tools from leadshine "protuner" http://www.leadshine.com/productdetail.aspx?type=products=stepper-products=stepper-drives=DM=DM870 Claude Le 20.04.2016 06:33, Gene Heskett a écrit : >

Re: [Emc-users] Question on DM860 stepper drivers

Is that a Leadshine drive? I thought they were pretty good. I do like my G203V's they run smooth and fast. http://www.geckodrive.com/geckodrive-step-motor-drives/g203v.html JT On 4/19/2016 11:33 PM, Gene Heskett wrote: > Greetings; > > One of the things I am noticing, when running this

Re: [Emc-users] Question on DM860 stepper drivers

On Wednesday 20 April 2016 05:23:22 Sarah Armstrong wrote: > simply drop the high microstepping , you dont need it , high > microstepping = missing steps , and decreaced Torque > Microstepping should only really be used for removing resonance . > In my playing with the 2m542's and 400+ oz/in nema

Re: [Emc-users] Question on DM860 stepper drivers

On Wednesday 20 April 2016 04:20:14 Nicklas Karlsson wrote: > > Greetings; > > > > One of the things I am noticing, when running this crippled Z drive > > at various speeds, is that up to about 3/4 rps at its shaft, it > > moves dead silently, but by 2 rps, its rattling tools off the table, > >

Re: [Emc-users] Question on DM860 stepper drivers

simply drop the high microstepping , you dont need it , high microstepping = missing steps , and decreaced Torque Microstepping should only really be used for removing resonance . On 20 April 2016 at 09:20, Nicklas Karlsson wrote: > > Greetings; > > > > One of the

Re: [Emc-users] Question on DM860 stepper drivers

> Greetings; > > One of the things I am noticing, when running this crippled Z drive at > various speeds, is that up to about 3/4 rps at its shaft, it moves dead > silently, but by 2 rps, its rattling tools off the table, exactly as if > is was being full stepped, and it doesn't become at all

[Emc-users] Question on DM860 stepper drivers

Greetings; One of the things I am noticing, when running this crippled Z drive at various speeds, is that up to about 3/4 rps at its shaft, it moves dead silently, but by 2 rps, its rattling tools off the table, exactly as if is was being full stepped, and it doesn't become at all smooth again