I am using the Mesa 5i20/7i33 system to retrofit my knee mill. I just finished
installing a 500 line (2000 ppr) encoder on the spindle, it is connected to the
Enc03 quadrature inputs on P2.
My timing settings in my ini file are:
BASE_PERIOD =35000
SERVO_PERIOD = 1
Tom wrote:
>I am using the Mesa 5i20/7i33 system to retrofit my knee mill. I just finished
>installing a 500 line (2000 ppr) encoder on the spindle, it is connected to the
>Enc03 quadrature inputs on P2.
>My timing settings in my ini file are:
>BASE_PERIOD =35000
>
>
Unless you'
Tom wrote:
>Tom writes:
>
>
>>I will look at
>>the outputs on the scope tomorrow. Also, I connected my cable shield to power
>>ground in the computer ribbon cable, so that may be causing excessive noise
>>feedback.
>>You have to jumper the Mesa 7i33 for differential inputs, and I think it has
Stephen Wille Padnos wrote:
> The newer Mesa drivers have an estimated velocity output, which should
> be pretty accurate. The scaling (*60) should be able to run in the
> servo thread just fine. I'm not sure when the velocity output was
> added, but I'm pretty sure it's in the hostmot2 driver
Tom wrote:
> Sebastian Kuzminsky writes:
>
>> Stephen Wille Padnos wrote:
>>
>> The hostmot2 driver in 2.2.8 has the new velocity estimation code.
>>
>
>
> Is there a new signal name for this?
The new pin is called "encoder.XX.velocity".
It's documented in the hostmot2 manpage, which gets ins
On Tue, Dec 16, 2008 at 05:57:06AM +, Tom wrote:
>
> Sebastian,
>
> My machine control computer is not networked and I only have a USB thumbdrive
> to
> transfer files. I am going to have to either rip it out of the machine to
> upgrade it, or jump through hoops to install the build essentia
Tom wrote:
>
> But... the dependencies make a non-networked install/upgrade very difficult.
>
> It might be easier to run a network cable 100ft out to the barn.
>
OK, my tact filter is on overload, but so be it.
(begin-rant)
Free Software comes from the internet.
The operating system that
On Tue, Dec 16, 2008 at 07:02:38PM +, Tom wrote:
>
> I stand corrected, Chris.
>
> But... the dependencies make a non-networked install/upgrade very difficult.
Only if upgrading between major versions. I didn't see whether that's
the case for you or not.
> It might be easier to run a net
On Tuesday 16 December 2008, John Kasunich wrote:
>Tom wrote:
>> But... the dependencies make a non-networked install/upgrade very
>> difficult.
>>
>> It might be easier to run a network cable 100ft out to the barn.
>
>OK, my tact filter is on overload, but so be it.
>
>(begin-rant)
>
>Free Softwar
Tom wrote:
> How do I check to make sure that quadrature filtering is turned on? Is this a
> "config modparam" statement that goes in the ini file?
> Can you give an example?
Are you using m5i20 (hostmot) or hm2_pci/hm2_5i20 (hostmot2)? If you're
using hostmot2, you enable encoder filtering in
On Wed, Dec 17, 2008 at 12:14:13PM -0700, Sebastian Kuzminsky wrote:
> I'm not sure how the m5i20/hostmot driver handles this...
the old driver simply has this setting hardcoded, and can't chage it
without a recompile. I forget what value is hardcoded, though.
Jeff
-
On Wed, 2008-12-17 at 19:06 +, Tom wrote:
... snip
> What you are pointing out seems to imply that
> you are concerned about noise in the lines. It looks like I am going to
> physically connect some test pigtails to the 5i20 in the controller so I can
> scope what is happening in the signal li
Kirk Wallace writes:
>
> If you are using a VFD on your spindle (or coolant pump), having one a
> filter on the power input solved my noise problems.
>
> http://www.eastek-intl.com/images/PreoSeriesEB.pdf
> http://www.wallacecompany.com/cnc_lathe/HNC/00024-1a.jpg
>
> If not, using a filter or
On Thu, 2008-12-18 at 06:26 +, Tom wrote:
> Kirk Wallace writes:
>
> >
> > If you are using a VFD on your spindle (or coolant pump), having one a
> > filter on the power input solved my noise problems.
> >
> > http://www.eastek-intl.com/images/PreoSeriesEB.pdf
> > http://www.wallacecompany.
Kirk Wallace writes:
... I learned this from
> trial and error rather than informed design, which is not the best way
> to do things connected with high voltages, currents, mass, dollars, etc.
>
Chuckle. OK Kirk. I will exercise due caution. Yes, the vfd is switching up to
350Vdc/25 amps in the
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