I would first look on eBay for DC drives within the 90V 40A range. All
the drives I have worked with have current limit adjustment, you could
use a 100A drive adjusted to 40% current limit. You may have to get a
higher voltage drive and limit the output voltage by with the Max Speed
On Wed, 2007-10-31 at 20:15 -0600, Jon Elson wrote:
Kirk Wallace wrote:
What is the best way to drive a 4hp, 90VDC, 40A spindle motor on a
Hardinge CHNC? Some of the large DC motors I have seen, look like
universal motors which would operate on AC or DC. Does anyone know if
the CHNC
On Wed, 2007-10-31 at 21:50 -0500, Ray Henry wrote:
I've got several of these motors out in the garage and I don't think any
of them would handle AC. The ones I've got are real DC motors with
quite a few windings and a massive commutator.
There were at least two DC motors used in these,
Do those ARM processors include floating point? My guess is not. Those
70+ MIPs might not go as far as you think if you have to do floating
point in software. I'd rather not go to the alternative of converting
everything to fixed point.
Ken
On Tue, Oct 30, 2007 at 12:31:18PM -0600, Jon Elson
Is this what your looking for?
http://linuxcnc.org/docs/EMC2_Integrator_Manual.pdf
Integrators Manual / Chapter 14 / Internal Components / 14.1 Stepgen
On Thu, 2007-11-01 at 17:53 +, Alan Condit wrote:
I read the article in the wiki that SWP pointed out recently. It generated a
question.
Ops. I forgot to mention, I think you do a setp in your HAL
configuration file(s) to set these parameters. I haven't actually set
these before, so I am guessing.
On Thu, 2007-11-01 at 11:17 -0700, Kirk Wallace wrote:
Is this what your looking for?
On Thursday 01 November 2007 13:01, Stephen Wille Padnos wrote:
Um, what about the search box at the bottom of every wiki page?
One other trick that works just about anywhere, including the wiki - the
Google site: command.
To use it you simply enter the following into the Google search box:
The following emc2.rules file, which is installed when you install a
.deb of emc2 (but not by 'make install), makes the rtai_shm device
accessible to all users:
~/emc2-src/debian/extras-Ubuntu-6.06/etc/udev/rules.d$ cat emc2.rules
KERNEL==RTAI_SHM SYMLINK==rtai_shm MODE=0666
Jeff
Gentlemen,
I am working on a kinematics module. This is an outline of what I
want to do.
Comments, suggestions, concerns?
Here goes.
**
Added to the .ini file:
-
[TRAJ]
tool/pivot length
-
in each [AXIS_*]
x axis offset
y axis offset
z axis
Alan Condit [EMAIL PROTECTED] writes:
I read the article in the wiki that SWP pointed out recently. It generated a
question. What file does one find the variables steplen, stepspace, dirsetup
and dirhold in?
Alan
On Thu, 2007-11-01 at 12:18 -0700, Andrew Ayre wrote:
Another thought - does permissions need to be set on a file somewhere to
allow the shared memory to work for all users? I did:
./configure options
make
make install
I didn't run make setuid. Is that still needed for a make install?
These items would be in .hal files.
Usually the default values (1 BASE_PERIOD) are OK for most stepper
drivers, so they are omitted from the default configuration files.
If you add these lines, they would be of the form
setp stepgen.0.steplen VALUE
where VALUE is the number of BASE_PERIODs
Stephen Wille Padnos wrote:
Jon Elson wrote:
Cecil Thomas wrote:
Steve,
That's not the one I remember but it looks like it might be even better.
I just spent the last 3 hours thinking I was searching the wiki for
stuff like this and basically came up with nothing.
I guess I don't
Ray Henry wrote:
On Thu, 2007-11-01 at 20:07 -0600, Jon Elson wrote:
Stephen Wille Padnos wrote:
Jon Elson wrote:
Um, what about the search box at the bottom of every wiki page?
(Blush) Exposing my inexperience to the whole world in
writing! Isn't the internet
Alex,
Sorry, yes, I ran all the commands as root. Constantly typing in sudo
annoys me so I enable the root account. Old skool perhaps...
Andy
Alex Joni wrote:
On Thu, 2007-11-01 at 12:18 -0700, Andrew Ayre wrote:
Another thought - does permissions need to be set on a file somewhere to
allow
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