Re: [Emc-users] Ethernet data collector?

On Friday, March 11, 2011 02:47:34 AM Igor Chudov did opine: > any thoughts about thus Bulgarian card? > > http://www.denkovi.com/product/8/snmp-ethernet-controller-with-24-digita > l-analog-i-o.html > > al-analog-i-o.htm

Re: [Emc-users] Current Feedback from PWM Amp

On Thu, 2011-03-10 at 20:53 -0600, Jon Elson wrote: ... snip > A current-sense resistor could be added outside the amp in series with > the motor wires, and then you'd get both polarities of motor current. > That would be an analog signal, then you could feed it to whatever ADC > you like. > > Jon

Re: [Emc-users] Single Phase Lathe spindle motor question

I thought I would throw in my two cents also... I have a home built rotary phase converter based on a 10 hp 200/400 volt 3 phase motor. Due to the odd nameplate voltage (for the US), the motor was very cheap to purchase. I run a variety of machines off this phase converter from time to time.

Re: [Emc-users] Ethernet data collector?

any thoughts about thus Bulgarian card? http://www.denkovi.com/product/8/snmp-ethernet-controller-with-24-digital-analog-i-o.html i On Thu, Mar 10, 2011 at 9:09 PM, Igor Chudov wrote: > Oops, I cannot u

Re: [Emc-users] Ethernet data collector?

Oops, I cannot use a card, I have only one PCI slot... taken by the parallel port card... crap On Thu, Mar 10, 2011 at 9:04 PM, Igor Chudov wrote: > Jon, it looks like there are "ANALOG INPUT PCI CARDS" for PCs that are > available. > > They should fit the bill, no? > > Are there linux drivers f

Re: [Emc-users] Ethernet data collector?

Jon, it looks like there are "ANALOG INPUT PCI CARDS" for PCs that are available. They should fit the bill, no? Are there linux drivers for those? i On Thu, Mar 10, 2011 at 8:57 PM, Jon Elson wrote: > Igor Chudov wrote: > > I want to collect a few analog data pieces, like 5-6 current values (

Re: [Emc-users] Ethernet data collector?

Igor Chudov wrote: > I want to collect a few analog data pieces, like 5-6 current values (AC and > DC), some temperatures, voltages etc. is there some thing that lets me do it > and disseminate it somehow to my Linux PC, via ethernet or USB or whatever. > My current favorite for anything like th

Re: [Emc-users] Current Feedback from PWM Amp

Kirk Wallace wrote: > Jon, how hard would it be to get a current output (SPI?) from your PWM > amps? I guess remote reset would be good too, but that's easy. > Pretty hard. You really don't want to mess with the high-current loop. There might be a couple things you could do. There are a pair o

Re: [Emc-users] Curious toolholder

On Thursday, March 10, 2011 07:16:28 PM Martin Dobbins did opine: > You could make one yourself there's a couple of places online showing > how: > > http://www.gadgetbuilder.com/ToolHolders.html He must have a steel QCTP. > http://mikesworkshop.weebly.com/tangential-tool-holder.html > This lat

Re: [Emc-users] Ethernet data collector?

On 11 March 2011 00:25, Igor Chudov wrote: > I want a finished product, the last thing I want is mess with a soldering > iron to get this done. How much do you want to spend? You can't go far wrong with NI kit: http://sine.ni.com/nips/cds/view/p/lang/en/nid/207483 -- atp "Torque wrenches are f

Re: [Emc-users] Ethernet data collector?

On Thu, Mar 10, 2011 at 5:59 PM, Fox Mulder wrote: > First question is what speed do you need from measurement to delivery in > the pc? > no hard and fast requirement, 0.1 second would be enough. > A range within Mikroseconds would be much more complex than within > milliseconds. If a few mill

Re: [Emc-users] Ethernet data collector?

First question is what speed do you need from measurement to delivery in the pc? A range within Mikroseconds would be much more complex than within milliseconds. If a few milliseconds is fast enough than an ad converter with multiplexer and a little microcontroller could do the work and deliver it

[Emc-users] Ethernet data collector?

I want to collect a few analog data pieces, like 5-6 current values (AC and DC), some temperatures, voltages etc. is there some thing that lets me do it and disseminate it somehow to my Linux PC, via ethernet or USB or whatever. --

Re: [Emc-users] Curious toolholder

You could make one yourself there's a couple of places online showing how: http://www.gadgetbuilder.com/ToolHolders.html http://mikesworkshop.weebly.com/tangential-tool-holder.html There are others, Google can sometimes be your friend. Martin > > On Thursday, March 10, 2011 04:32:36 PM dave

Re: [Emc-users] Single Phase Lathe spindle motor question

- Original Message - From: "gene heskett" To: Sent: Thursday, March 10, 2011 9:30 AM Subject: Re: [Emc-users] Single Phase Lathe spindle motor question > On Thursday, March 10, 2011 10:25:58 AM RogerN did opine: > >> >- Original Message - >> >From: "andy pugh" >> >To: "Enhance

Re: [Emc-users] SPI on ModIO?

On Fri, 2011-03-11 at 08:03 +1100, Peter Homann wrote: > Hi Kirk, > > Unfortunately not. It does an an i2c interface, but found it too unleliable > for industrial control applications. > > Cheers, > > Peter. > > On 11/03/2011 4:15 AM, Kirk Wallace wrote: > > Peter H., is there a way to get an

Re: [Emc-users] Curious toolholder

On Thursday, March 10, 2011 04:32:36 PM dave did opine: > Look in Home Shop Machinist. Should be at least a couple of vendors. > Dave That rag I have seen, but it doesn't get to the bookstores here in WV. Dammit. So what I do have were picked up by a friend at a thrift shop & mailed to me at

Re: [Emc-users] thoughts on synergy

On Thursday, March 10, 2011 04:15:25 PM dave did opine: > You missed by a factor of 10. Try $250 for 2d and wireframe. > 3d, wireframe, and gcode output that would carve a solid model, and I'll buy it. 2d, with no z data, doesn't cut it. > On Wed, 2011-03-09 at 20:27 -0500, gene heskett wrote: >

Re: [Emc-users] SPI on ModIO?

Hi Kirk, Unfortunately not. It does an an i2c interface, but found it too unleliable for industrial control applications. Cheers, Peter. On 11/03/2011 4:15 AM, Kirk Wallace wrote: > Peter H., is there a way to get an SPI feature on the ModIO. I have a > tool changer that will use an SPI absolu

[Emc-users] Current Feedback from PWM Amp

Jon, how hard would it be to get a current output (SPI?) from your PWM amps? I guess remote reset would be good too, but that's easy. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA -

Re: [Emc-users] SPI on ModIO?

On Thu, 2011-03-10 at 09:15 -0800, Kirk Wallace wrote: > Peter H., is there a way to get an SPI feature on the ModIO. I have a > tool changer that will use an SPI absolute encoder, so SPI would be > handy. Added a diagram here: http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?ModIO -- Kirk Wallace ht

Re: [Emc-users] Single Phase Lathe spindle motor question

gene heskett wrote: > > > Bring in the VFD, and of course you are right. The VFD may in fact have > more amps per leg flowing but with careful design, can recover much of that > which isn't actually used to turn the motor, I've seen that in the > discussion so far. > > Which leads me to believe

Re: [Emc-users] Single Phase Lathe spindle motor question

andy pugh wrote: > I think we are discussing different things. > > I am saying that if a motor takes 200A per phase on 3 wires out of the > VFD and that power comes into the VFD on 2 wires, then the current in > the 2 wires will be more than 200A each. > OK, that is a whole different thing. Ind

Re: [Emc-users] Single Phase Lathe spindle motor question

andy pugh wrote: > On 10 March 2011 01:24, gene heskett wrote: > > >> But that was a 20HP motor, running on 235V 3 phase, and drew 39 amps/phase >> at rated power output. So a 100 HP motor would have needed only 195 amps, >> not 330/phase. >> > > 195A per phase on 3-phase input. Wouldn't

Re: [Emc-users] Help with PWM spindle control

On 10 March 2011 22:28, Tony Zampini wrote: > Am I correct to assume that the PWM output is different > than the other outputs (like step X, dir X, etc.), in that I > *must* write hal code to get it to work? Not as far as I know. I am pretty sure that Stepconf ought to do all that is needed. How

[Emc-users] SPI on ModIO?

Peter H., is there a way to get an SPI feature on the ModIO. I have a tool changer that will use an SPI absolute encoder, so SPI would be handy. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA --

Re: [Emc-users] thoughts on synergy

You missed by a factor of 10. Try $250 for 2d and wireframe. On Wed, 2011-03-09 at 20:27 -0500, gene heskett wrote: > On Wednesday, March 09, 2011 08:25:07 PM dave did opine: > > > Synergy works well for me but since I had no drafting/cad training it > > came up slow. However, it is very powerf

Re: [Emc-users] Curious toolholder

Look in Home Shop Machinist. Should be at least a couple of vendors. Dave On Wed, 2011-03-09 at 20:35 -0500, gene heskett wrote: > On Wednesday, March 09, 2011 08:33:49 PM dave did opine: > > > On Wed, 2011-03-09 at 18:02 +, andy pugh wrote: > > > Not such a bad idea... > > > http://www.yout

Re: [Emc-users] Help with PWM spindle control

Thanks to Jon, Gene, and Andy for your responses. I've been using EMC for 3-axis milling, but I've never had to get involved with HAL. I simply used the step config wizard to set things up, and everything worked. I also set up the PWM spindle control in step config wizard. Am I correct to assume

Re: [Emc-users] Single Phase Lathe spindle motor question

On Wed, 2011-03-09 at 23:51 -0600, Jon Elson wrote: > Peter Blodow wrote: > > > > I think it would be worth wile to build up a powerful lobby in the US to > > enforce decent power supply for everyone - what a shame for the most > > powerful and most technically oriented country in the world to di

Re: [Emc-users] Single Phase Lathe spindle motor question

On Thursday, March 10, 2011 10:42:07 AM andy pugh did opine: > On 10 March 2011 15:24, gene heskett wrote: > >> 195A per phase on 3-phase input. Wouldn't it be 50% more on > >> single-phase input? (Or would it be 3x as much?) > > > > I don't have a mathematical basis, but it seems to me that to

Re: [Emc-users] Single Phase Lathe spindle motor question

On 10 March 2011 15:24, gene heskett wrote: >> 195A per phase on 3-phase input. Wouldn't it be 50% more on >> single-phase input? (Or would it be 3x as much?) > > I don't have a mathematical basis, but it seems to me that to get that same > 100 horse out of a single phase, one would have to facto

Re: [Emc-users] Single Phase Lathe spindle motor question

On Thursday, March 10, 2011 10:25:58 AM RogerN did opine: > >- Original Message - > >From: "andy pugh" > >To: "Enhanced Machine Controller (EMC)" > > Sent: Thursday, March 10, 2011 4:59 > >AM > >Subject: Re: [Emc-users] Single Phase Lathe spindle motor question > > > >On 10 March 2011 01:

Re: [Emc-users] Single Phase Lathe spindle motor question

On Thursday, March 10, 2011 09:27:37 AM andy pugh did opine: > On 10 March 2011 01:24, gene heskett wrote: > > But that was a 20HP motor, running on 235V 3 phase, and drew 39 > > amps/phase at rated power output. �So a 100 HP motor would have > > needed only 195 amps, not 330/phase. > > 195A per

Re: [Emc-users] Single Phase Lathe spindle motor question

On Thursday, March 10, 2011 09:23:17 AM Mark Wendt did opine: > On 03/10/2011 12:51 AM, Jon Elson wrote: > > Peter Blodow wrote: > >> I think it would be worth wile to build up a powerful lobby in the US > >> to enforce decent power supply for everyone - what a shame for the > >> most powerful and

Re: [Emc-users] Single Phase Lathe spindle motor question

>- Original Message - >From: "andy pugh" >To: "Enhanced Machine Controller (EMC)" >Sent: Thursday, March 10, 2011 4:59 AM >Subject: Re: [Emc-users] Single Phase Lathe spindle motor question > >On 10 March 2011 01:24, gene heskett wrote: > >> But that was a 20HP motor, running on 235V

Re: [Emc-users] comedi parallel port

Thanks for the great ideas, I think I will try the HALscope first. Cheers Bob On Thu, Mar 10, 2011 at 7:34 PM, andy pugh wrote: > On 10 March 2011 11:11, andy pugh wrote: > > > Searching the site there is some talk of compiling comedi for Debian > > Etch, but the only other information is discu

Re: [Emc-users] comedi parallel port

On 10 March 2011 11:11, andy pugh wrote: > Searching the site there is some talk of compiling comedi for Debian > Etch, but the only other information is discussion of creating a HAL > interface for Comedi (Which is a good idea, something I have > considered doing, but as far as I know has not be

Re: [Emc-users] comedi parallel port

On 10 March 2011 08:00, Bob Lasure wrote: > I'm running Emc on the Lucid distro, and cannot get the comedi driver to > configure for the parallel port. I tried comedi_config /dev/comedi0 > comedi_parport as root, but only get a file not found error. I don't think that EMC2 uses, or is compatible

Re: [Emc-users] Single Phase Lathe spindle motor question

On 10 March 2011 01:24, gene heskett wrote: > But that was a 20HP motor, running on 235V 3 phase, and drew 39 amps/phase > at rated power output.  So a 100 HP motor would have needed only 195 amps, > not 330/phase. 195A per phase on 3-phase input. Wouldn't it be 50% more on single-phase input? (

Re: [Emc-users] Can you help me identify and control my spindle motor?

On 10 March 2011 01:34, Alan Kilian wrote: > I've posted photos of the PCBs at: > https://picasaweb.google.com/AlanKilian/Misc# At a guess, the spindle can plug in to either of the two D-sub sockets on the underside of that board? So it looks like the relay switches between two possible spindle

Re: [Emc-users] Single Phase Lathe spindle motor question

On 03/10/2011 12:51 AM, Jon Elson wrote: > Peter Blodow wrote: >> >> I think it would be worth wile to build up a powerful lobby in the US to >> enforce decent power supply for everyone - what a shame for the most >> powerful and most technically oriented country in the world to discuss >> about ho

[Emc-users] comedi parallel port

I'm running Emc on the Lucid distro, and cannot get the comedi driver to configure for the parallel port. I tried comedi_config /dev/comedi0 comedi_parport as root, but only get a file not found error. Any suggestions? Thanks ---