There seems to be some misunderstanding regarding the PDM frequency for a
7i33. The Integrators manual, V2.5, p140 states that the frequency is in Hz.
The 7i33 manual recommends 6 MHz.
Pncconf gives a message that a PDM frequency of 6000 is required and puts
that into the HAL file. Should it not
--- On Sun, 4/28/13, Peter C. Wallace wrote:
> I dont think the case for servo systems is very good without
> some additional hardware. The BBB has just three possible
> hardware encoder counters. Software encoder counters could
> be done by the PRU but they would not be comparable to
> hardware
--- On Sun, 4/28/13, Michael Haberler wrote:
> ad 1): Kent was the first to try and confirmed the BBB does
> NOT boot this image; however, it doesnt boot the BBW
> Angstrom card supplied with the BBW either, so we're in good
> company and I am pretty sure this is a trivial issue to
> resolve once
On 29 April 2013 06:33, Cecil Thomas wrote:
> My only
> real concern is going to be integrating spindle speed control because
> the existing control utilizes two huge rheostats to control the drive
> motor field and the generator field. I might just lash up a servo or
> stepper with a belt to
A chap contacted me about my Arduino boards for resolvers.
He has a pair of ABB robots he got for a steal. He is talking in terms
of breaking for parts (specifically the harmonic drives).
I think that the robots have DC motors + Resolvers. The original
drives apparently work, but not the rest of
>From: Andrew
>Sent: Sunday, April 28, 2013 11:55 AM
>To: Enhanced Machine Controller (EMC)
>Subject: Re: [Emc-users] Mesa Board Configuration
>
>2013/4/28 RogerN
>
>> I’m preparing for a conversion of a mill that has servos and encoders.
>> It
>> currently has 3 axis but I want to add spindle co
On 29 April 2013 11:51, RogerN wrote:
> Six axis sounds great to me, I just didn't want to use up all 4 axis using
> the spindle and then not have a rotary option in the future.
5i25 + 7i77 can easily be expanded with a second 7i77 for another 6
axes anyway.
--
atp
If you can't fix it, you don
On 4/29/2013 5:11 AM, Gregg Eshelman wrote:
> --- On Sun, 4/28/13, Michael Haberler wrote:
>
>> ad 1): Kent was the first to try and confirmed the BBB does
>> NOT boot this image; however, it doesnt boot the BBW
>> Angstrom card supplied with the BBW either, so we're in good
>> company and I am pr
Greg -
Am 29.04.2013 um 11:11 schrieb Gregg Eshelman :
> --- On Sun, 4/28/13, Michael Haberler wrote:
>
>> ad 1): Kent was the first to try and confirmed the BBB does
>> NOT boot this image; however, it doesnt boot the BBW
>> Angstrom card supplied with the BBW either, so we're in good
>> compa
On 4/29/2013 7:35 AM, Michael Haberler wrote:
> Greg -
>
> Am 29.04.2013 um 11:11 schrieb Gregg Eshelman :
>
>> --- On Sun, 4/28/13, Michael Haberler wrote:
>>
>>> ad 1): Kent was the first to try and confirmed the BBB does
>>> NOT boot this image; however, it doesnt boot the BBW
>>> Angstrom card
On Mon, 29 Apr 2013, Rudy du Preez wrote:
> Date: Mon, 29 Apr 2013 09:17:40 +0200
> From: Rudy du Preez
> Reply-To: "Enhanced Machine Controller (EMC)"
>
> To: emc-users@lists.sourceforge.net
> Subject: Re: [Emc-users] Hostmot2-PDM frequency
>
> There seems to be some misunderstanding regar
Micro HDMI - no sweat ... Micro HDMI to HDMI for $5.00 on Amazon.. The
brick and mortar stores around me also attempt robbery when it comes to
cables
:-)
http://www.amazon.com/s/ref=nb_sb_ss_sc_3_9/182-5664315-3225654?url=search-alias%3Daps&field-keywords=micro%20hdmi%20to%20hdmi%20adapte
On 4/29/2013 1:18 AM, Michael Haberler wrote:
> as these things go.. I've learned hours after announcing the starterkit that:
>
> 1. this image will *not* boot on the Beaglebone Black
> 2. the 3.2.21/2.6 Xenomai patch used in the starterkit kernel does have a
> serious issue
>
> ad 1): Kent was th
On Mon, Apr 29, 2013, at 06:00 AM, andy pugh wrote:
> On 29 April 2013 06:33, Cecil Thomas wrote:
>
>
> > My only
> > real concern is going to be integrating spindle speed control because
> > the existing control utilizes two huge rheostats to control the drive
> > motor field and the generat
On 29 April 2013 15:16, John Kasunich wrote:
> Discarding the DC motor will almost certainly mean
> a significant performance penalty. Keeping the DC
> motor and driving it with either a DC drive, or the
> existing motor-generator set, will keep the performance.
Good point, I didn't think of th
We used a dc drive to run the rotor - then used the (IIRC) existing
large adjustable resistor to drop the field as you increased the speed..
(from simple rectified dc).This is still a manual lathe. I
think though it would be pretty easy to use 2 dc drives - one for the
rotor and one fo
Hi Kent,
Date: Mon, 29 Apr 2013 07:57:47 -0400
From: "Kent A. Reed"
Subject: Re: [Emc-users] warning on the Beaglebone LinuxCNC starterkit
:-/
To: "Enhanced Machine Controller (EMC)"
> I can accept this cost-cutting measure. It's harder for me to accept
> that the uSD socket is v
On Mon, 29 Apr 2013, Gregg Eshelman wrote:
> Date: Mon, 29 Apr 2013 01:51:22 -0700 (PDT)
> From: Gregg Eshelman
> Reply-To: "Enhanced Machine Controller (EMC)"
>
> To: "Enhanced Machine Controller (EMC)"
> Subject: Re: [Emc-users] [utf-8] Beaglebone LinuxCNC starterkit: ready-to-run
> S
Am 29.04.2013 um 15:33 schrieb Dave :
> On 4/29/2013 1:18 AM, Michael Haberler wrote:
...
>> - do not waste time trying to run the starterkit image on the BBB yet until
>> I have a replacement known to work on the BBB
>> - dont use the BBW/starterkit config for something critical _yet_. It is
>
On 29 April 2013 16:04, sam sokolik wrote:
> I
> think though it would be pretty easy to use 2 dc drives - one for the
> rotor and one for the field. (seems easy enough to control it from hal..)
And the Mesa 7i29 has two channels...
--
atp
If you can't fix it, you don't own it.
http://www.if
Michael Haberler wrote:
> as these things go.. I've learned hours after announcing the starterkit that:
>
> 1. this image will *not* boot on the Beaglebone Black
> 2. the 3.2.21/2.6 Xenomai patch used in the starterkit kernel does have a
> serious issue
>
> ad 1): Kent was the first to try and con
Gene Heskett wrote:
>
> It sounds as if its a 3 phase AC motor turning a DC generator which in turn
> powers a DC motor that actually drives the spindle?
>
Essentially right.
> For those DC controls, I'd think it would be a lot more power efficient to
> toss the rheostats in favor of pwm contr
andy pugh wrote:
>
> It has to make more sense to couple a 3-phase motor and
> single-phase-input VFD directly to the spindle?
>
The motor is an odd frame, and also has MASSIVE torque at low
speed. So, the 10EE has no back gear. It probably works MUCH
better at low speed than a VFD and typical
> -Original Message-
> From: Jon Elson [mailto:el...@pico-systems.com]
> Sent: Monday, April 29, 2013 1:00 PM
> To: Enhanced Machine Controller (EMC)
> Subject: Re: [Emc-users] converting Monarch 10EE
>
> andy pugh wrote:
> >
> > It has to make more sense to couple a 3-phase motor and
IIRC, Monarch threw all the silly stuff out and used AC motors + VFDs for
the late 10EEs. Supposedly 7.5hp w/ backgear, 10hp w/o. Im sure a 5+hp ac
system would beat the stuffings out of one of the orig monarch drive
systems.
CNC spindles do need to change speed rapidly for facing using CSS.
Al
On 4/29/2013 9:28 AM, Dave wrote:
> Micro HDMI - no sweat ... Micro HDMI to HDMI for $5.00 on Amazon.. The
> brick and mortar stores around me also attempt robbery when it comes to
> cables
>
> :-)
>
> http://www.amazon.com/s/ref=nb_sb_ss_sc_3_9/182-5664315-3225654?url=search-alias%3Daps&fiel
On Mon, Apr 29, 2013, at 02:20 PM, Stephen Dubovsky wrote:
> Also, inverter drive induction motors can do 3:1+ constant hp range.
Sure, you can get 3:1 constant power range from an AC motor, but only
if you are using a motor that was designed and specified for that application.
Typically has a
On Sun, 28 Apr 2013 12:55:17 -0500
Jon Elson wrote:
> Is there a consensus about BeagleBone vs. Raspberry Pi?
I feel the need to defend the Pi, Cubie, Olimex, et al boards, since it
appears that no one else will :)
Several areas of concern are worthy of our attention, which argue for a
more cir
Hi,
Just wondering which BBB to choose: $42 or $44
https://specialcomp.com/beaglebone/
I have the USB cable, but is it a problem that eMMC Storage is blank
instead of Angstrom Distribution?
On the other hand, Restricted Use for Feasibility Evaluation Only vs.
Intended for Commercial Use - aren't th
Gentlemen,
Am 29.04.2013 um 20:16 schrieb Matt Shaver :
> On Sun, 28 Apr 2013 12:55:17 -0500
> Jon Elson wrote:
>
>> Is there a consensus about BeagleBone vs. Raspberry Pi?
>
> I feel the need to defend the Pi, Cubie, Olimex, et al boards, since it
> appears that no one else will :)
let me s
Oh yes,
I would be interested in an old ABB robot for a reasonable price. I live
within easy travel distace from ABB if the robots are there.
> A chap contacted me about my Arduino boards for resolvers.
>
> He has a pair of ABB robots he got for a steal. He is talking in terms
> of breaking for p
Thanks for all the inputs. I did quite a bit of research concerning
the effectiveness vs the amount of work vs the expense of getting the
machine on line and making chips.
1. Tossing the entire drive train and replacing with a 10 hp 3ph
motor and vfd to run from 220 single phase.. can't be
On 4/29/2013 2:55 PM, Andrew wrote:
> Hi,
> Just wondering which BBB to choose: $42 or $44
> https://specialcomp.com/beaglebone/
> I have the USB cable, but is it a problem that eMMC Storage is blank
> instead of Angstrom Distribution?
> On the other hand, Restricted Use for Feasibility Evaluation
FWIW, Solution to #1 is typ easy. Large VFDs typ bring out the DC bus for
more filtering caps if needed. Add additional external caps (need appox
double whats internal) and add a large external rectifier to the caps.
Basically, feed the VFD dc. You'll need to disable phase loss detection
just li
On 29 April 2013 20:18, Cecil Thomas wrote:
> 300 VDC from 220 VAC is a challenge.
Actually, 300VDC is pretty much exactly what you get by rectifying 220V AC.
--
atp
If you can't fix it, you don't own it.
http://www.ifixit.com/Manifesto
On Monday 29 April 2013 15:50:03 Jon Elson did opine:
> Gene Heskett wrote:
> > It sounds as if its a 3 phase AC motor turning a DC generator which in
> > turn powers a DC motor that actually drives the spindle?
>
> Essentially right.
>
> > For those DC controls, I'd think it would be a lot more
The 7i77 is 6 analog out for servo control, I thought you wanted PWM out.
- Original Message -
>From: Andrew
>Sent: Sunday, April 28, 2013 11:55 AM
>To: Enhanced Machine Controller (EMC)
>Subject: Re: [Emc-users] Mesa Board Configuration
>
>2013/4/28 RogerN
>
>> I’m preparing for a conver
2013/4/29 Kent A. Reed
> How much is your time worth? If the eMMC storage is blank you'll need to
> download an image file, burn it to a microSD card, plug it in, and boot
> from it (the BBB Angstrom distribution automagically transfers itself to
> the eMMC storage; Robert Nelson provides a scrip
--- On Mon, 4/29/13, andy pugh wrote:
> The Ward-Leonard arrangement is fairly elaborate in itself,
> but running it from a rotary phase converter is just excessive.
I'd take off the vintage Rube Goldberg (or Heath Robinson for thos on the other
side of the globe) original setup and replace it
When I converted my Anilam lathe to EMC2, I used the 5i20 + 7i33 + 7i37. If
I understand correctly, the external boards convert the PWM signal from the
5i20 into a +/- 10V signal. I was thinking that the boards produced an
analog output from a PWM signal, not an actual D-A converter. That's w
--- On Mon, 4/29/13, Peter C. Wallace wrote:
> > From: Gregg Eshelman
> > What about the network port? Don't use the video and
> use network for control.
> > Could you multiplex encoder data to make two work like
> four, albeit at a slower rate?
>
>
> You could multiplex encoder data using a
On Mon, 29 Apr 2013, RogerN wrote:
Date: Mon, 29 Apr 2013 17:02:50 -0500
From: RogerN
Reply-To: "Enhanced Machine Controller (EMC)"
To: "Enhanced Machine Controller (EMC)"
Subject: Re: [Emc-users] Mesa Board Configuration
When I converted my Anilam lathe to EMC2, I used the 5i20 + 7i33 +
--- On Mon, 4/29/13, Steve Stallings wrote:
> Sorry for the run-on URL, but I could not find a shorter
> one.
>
> Steve Stallings
http://www.practicalmachinist.com/vb/attachments/f10/19126d1263689447-backgear-monarch-10-ee-3-hp-motor-back-gear.jpg
--
--- On Mon, 4/29/13, Cecil Thomas wrote:
> 5. Replace the 3 ph motor with a 5 hp single phase motor..
> Probably the neatest solution but the motor and generator
> are a single unit so the single phase motor would have to actually
> spin both the motor and generator IF... there was room enou
On 4/29/2013 1:16 PM, Matt Shaver wrote:
> On Sun, 28 Apr 2013 12:55:17 -0500
> Jon Elson wrote:
>
>> Is there a consensus about BeagleBone vs. Raspberry Pi?
>
> I feel the need to defend the Pi, Cubie, Olimex, et al boards, since it
> appears that no one else will :)
Excellent points...I have
On Mon, 29 Apr 2013 21:05:41 +0200
Michael Haberler wrote:
> Am 29.04.2013 um 20:16 schrieb Matt Shaver :
>
> > On Sun, 28 Apr 2013 12:55:17 -0500
> > Jon Elson wrote:
> >
> >> Is there a consensus about BeagleBone vs. Raspberry Pi?
> >
> > I feel the need to defend the Pi, Cubie, Olimex, et
On Monday 29 April 2013 20:12:27 Gregg Eshelman did opine:
> --- On Mon, 4/29/13, andy pugh wrote:
> > The Ward-Leonard arrangement is fairly elaborate in itself,
> > but running it from a rotary phase converter is just excessive.
>
> I'd take off the vintage Rube Goldberg (or Heath Robinson for
Steve Stallings wrote:
>
>
>
>> -Original Message-
>> From: Jon Elson [mailto:el...@pico-systems.com]
>> Sent: Monday, April 29, 2013 1:00 PM
>> To: Enhanced Machine Controller (EMC)
>> Subject: Re: [Emc-users] converting Monarch 10EE
>>
>> andy pugh wrote:
>>
>>> It has to make
On Mon, 2013-04-29 at 20:28 -0500, Jon Elson wrote:
> Steve Stallings wrote:
> >
> >
> >
> >> -Original Message-
> >> From: Jon Elson [mailto:el...@pico-systems.com]
> >> Sent: Monday, April 29, 2013 1:00 PM
> >> To: Enhanced Machine Controller (EMC)
> >> Subject: Re: [Emc-users] conv
gene did say
The day of picking up a
defunct treadmill, or a surplus motor from one, seem to now be in the
distant past, with one that I saw on fleabay, clearly well abused, 6 months
ago that still had 3 days to go and was above 200USD then
my results from flea bay are different and 2 of my 3 mach
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