Kirk Wallace wrote:
>
> What are the issues with choosing a PWM frequency? I would think that
> efficiency would be one, where you would balance switching losses and
> iron or copper losses? Evidence of this might be seen as higher motor or
> amp temperatures? Lower frequencies might produce noise
On Thu, 2008-06-05 at 21:19 -0500, Jon Elson wrote:
...snip
> If you have a spindle encoder, you could make HAL read the encoder
> velocity and add a correction to the PWM output.
>
> Jon
It was talked about before, but I don't remember the outcome. The
software encoder has a velocity output pin
Aram,
i talk to company that manufacture encoder with 5 000 000 pulses per rev.
> the problem is that that encoder has MAXIMUM rpm less than 200 rpm!!!
> so that encoder can be speen faster than 200 rpm because frequences not
> enogh to keep so much pulses.
> if you want speen faster get lower re
On Thu, 2008-06-05 at 21:19 -0500, Jon Elson wrote:
> Kirk Wallace wrote:
> > A while back I played with a KBIC speed controller which demonstrated
> > fairly good torque at high and low speeds. I was curious about how a PWM
> > amp would do, so I set up a Pico amp to a parport PWM signal at about
Jon Elson wrote:
> Stephen Wille Padnos wrote:
>> Jon Elson wrote:
>>
>>> A very good point! It seems there would be a 25.4 X benefit
>>> then by using mm as the user unit instead of inches, in the case
>>> of these very high resolution encoders. (I think you mean + 0.5
>>> * 10 ^ -23 in the a
Kirk Wallace wrote:
> A while back I played with a KBIC speed controller which demonstrated
> fairly good torque at high and low speeds. I was curious about how a PWM
> amp would do, so I set up a Pico amp to a parport PWM signal at about
> 25kHz and was surprised to find that low end torque was mu
Matt Shaver wrote:
> On Thu, 2008-06-05 at 00:18 -0500, Jon Elson wrote:
>
>>I don't think there is truly ONE way to do things. You pretty
>>much have to use safety-rated controls from Pilz, Crouzet,
>>Schaffner, Faulhaber, etc., and then set them up so they can
>>function correctly to stop mot
Stephen Wille Padnos wrote:
> Jon Elson wrote:
>
>
>>Jeff Epler wrote:
>>
>>
>>
>>>In emc2 there are practical limits on the precision of position values due to
>>>the use of "float" as the fundamental type for "analog" values such as
>>>encoder positions. For instance, the values 1.0 and 1.0 +
A while back I played with a KBIC speed controller which demonstrated
fairly good torque at high and low speeds. I was curious about how a PWM
amp would do, so I set up a Pico amp to a parport PWM signal at about
25kHz and was surprised to find that low end torque was much less. I
thought the PWM f
I would second Ray on .deb files. Another thing to consider is that
since EMC2 is primarily supported on Ubuntu, and I would guess EMC2
users would be your main linux customers, it might may the most sense to
primarily target the same platform. A plus is that the ubuntu .deb
should install fine o
Never actually seen one, but this gadget looks sort of like
the middle ground between a full up spectrum analyzer
and just waving around an AM radio.
http://www.saelig.com/miva/merchant.mvc?Screen=PROD&Product_Code=EMC006
Cheers,
Steve Stallings
> -Original Message-
> From: [EMAIL PROTE
Matt Shaver wrote:
> The most basic test for RFI is to tune around the AM radio band on a
> receiver with the antenna close to the equipment under consideration,
> listening for changes in the level of "static". I'm just hoping to
> improve on this; to take it to the next step. Maybe build some so
On Thu, 2008-06-05 at 00:18 -0500, Jon Elson wrote:
> I don't think there is truly ONE way to do things. You pretty
> much have to use safety-rated controls from Pilz, Crouzet,
> Schaffner, Faulhaber, etc., and then set them up so they can
> function correctly to stop motion, even after a compon
Jon Elson wrote:
>Jeff Epler wrote:
>
>
>>In emc2 there are practical limits on the precision of position values due to
>>the use of "float" as the fundamental type for "analog" values such as
>>encoder positions. For instance, the values 1.0 and 1.0 + 0.5**23
>>(approximately 1.001) are bo
Jeff Epler wrote:
> In emc2 there are practical limits on the precision of position values due to
> the use of "float" as the fundamental type for "analog" values such as
> encoder positions. For instance, the values 1.0 and 1.0 + 0.5**23
> (approximately 1.001) are both exactly representable,
On Thu, 5 Jun 2008, Howard Chan wrote:
> Date: Thu, 05 Jun 2008 23:22:39 +0800
> From: Howard Chan <[EMAIL PROTECTED]>
> Reply-To: "Enhanced Machine Controller (EMC)"
>
> To: "Enhanced Machine Controller (EMC)"
> Subject: Re: [Emc-users] How can I connect servo encoder to 5I20?
>
> I should
I should set the jumpers in the "UP" position in my case. It is because
the encoder is RS-422 type, is it correct??
Howard
> On Thu, 5 Jun 2008, Howard Chan wrote:
>
> No, you connect the A,/A B,/B and Z,/Z wires from the encoder to the 7I33T.
> The 7I33T has the 3486 line reciever for the diff
On Thu, 2008-06-05 at 14:43 +0100, Leslie Newell wrote:
> Thanks. It is a real pity that installation is so hard. IMHO this needs
> to be solved before Linux can take over the world ;-)
I'm not certain that we want to blame the install issues on Linux.
These kinds of things tend to be more of a
On Thu, 5 Jun 2008, Howard Chan wrote:
> Date: Thu, 05 Jun 2008 22:21:06 +0800
> From: Howard Chan <[EMAIL PROTECTED]>
> Reply-To: "Enhanced Machine Controller (EMC)"
>
> To: "Enhanced Machine Controller (EMC)"
> Subject: Re: [Emc-users] How can I connect servo encoder to 5I20?
>
> Is it me
> Dear All,
> I am using AC-Servo Motor(SANYO DENKI) which have a encoder. The encoder
> provide A and /A phase, B and /B phase, Z and /Z phase. The Pin assembly
> of HAL, there are not any pins about /A, /B and /Z phases, but there are
> provided in the 7I33T. If I would like only using 5I20 to do
Is it mean that I only connect A , B and Z phases to 5I20 or I should
use IC(DS3486) to combine A and /A and connect to 5I20?
Thank you!
Howard
> On Thu, 5 Jun 2008, Howard Chan wrote:
>
>
>> Date: Thu, 05 Jun 2008 20:46:17 +0800
>> From: Howard Chan <[EMAIL PROTECTED]>
>> Reply-To: "Enhanced
> If used incorrectly autopackage installs can go pear shaped. Very.
>
Yes. I am finding that out the hard way :-(
> .run/.sh/.bin have worked well here. I don't know how difficult this might be.
>
Yes, that is the route I am intending to go. Nixstaller looks to be a
good bet. It has the
On Wed, Jun 04, 2008 at 09:57:53PM -0600, [EMAIL PROTECTED] wrote:
> Hi
> Servo Dynamic told me that have encoder with too much resolution is not
> help because drive will not be able to process or use too much pulses from
> encoder. Are there a MAXIMUM limits of pulses from encoder?
Typically the
Gentlemen,
At www.mpm1.com:8080/machines/cinci/emc2-stuart.tgz is my directory
I built the cinci and viper machines. I updated it this morning and
ran the machines.
Have fun.
thanks
Stuart
-
Check out the new SourceForge
On Thu, Jun 05, 2008 at 08:46:17PM +0800, Howard Chan wrote:
> Dear All,
>
> I am using AC-Servo Motor(SANYO DENKI) which have a encoder. The encoder
> provide A and /A phase, B and /B phase, Z and /Z phase. The Pin assembly
> of HAL, there are not any pins about /A, /B and /Z phases, but there ar
On Thu, 5 Jun 2008, Howard Chan wrote:
> Date: Thu, 05 Jun 2008 20:46:17 +0800
> From: Howard Chan <[EMAIL PROTECTED]>
> Reply-To: "Enhanced Machine Controller (EMC)"
>
> To: EMC User
> Subject: [Emc-users] How can I connect servo encoder to 5I20?
>
> Dear All,
>
> I am using AC-Servo Motor
Dear All,
I am using AC-Servo Motor(SANYO DENKI) which have a encoder. The encoder
provide A and /A phase, B and /B phase, Z and /Z phase. The Pin assembly
of HAL, there are not any pins about /A, /B and /Z phases, but there are
provided in the 7I33T. If I would like only using 5I20 to do the cont
Leslie Newell <[EMAIL PROTECTED]> writes:
>
> Hi Matt,
>
> It is rather sad that it is easier to install the Windows version on
> Linux than the native Linux version
>
> SheetCam is a closed source commercial app so I am afraid can't provide
> the source. I have had so many problems with Au
That explains my problems trying to install I'm using 6.06
John
On 4 Jun 2008 at 20:16, Leslie Newell wrote:
> The moderators of this list have kindly allowed me to announce the
> release of SheetCam for Linux. SheetCam is a general purpose 3.1/2D
> CAM package. It was originally aimed towards r
Thanks for the info. I gave it a try, but am missing too many
dependencies. Guess I'll have to switch to OpenSuse or so. The SuSE
enterprise desktop is stable, but isn't really setup for development
Alex Joni wrote:
> Compiling sim should work fairly easy, once you installed all dependencies.
> Ru
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