On Tue, 6 Sep 2011 09:45:52 +0300, you wrote:
Kim, I am trying to build industrial machines with EMC. Explaining to
client, why do they need to specify S word in g-code file for a
welding robot, where it does not make any sense at all, is very very
difficult, after I have been telling them, how
On Tue, 6 Sep 2011 03:12:00 -0500, you wrote:
Have you tried the RS274NGC section of the ini file as
described by section 4.2.4 of the integrators manual?
---
4.2.4 [RS274NGC] Section
PARAMETER_FILE = file.var The file which contains the
parameters used by
On 09/05/2011 11:58 PM, Jon Elson wrote:
Andrew wrote:
Both motors and drives.
I have pretty low-cost drives for the Keling brushless motors (they will
drive a variety
of other motors as well.) $150 per axis for up to 20 Amps and 120 V
DC. These take
PWM signals as the
On 6 September 2011 04:58, Jon Elson el...@pico-systems.com wrote:
I have pretty low-cost drives for the Keling brushless motors (they will
drive a variety of other motors as well.)
With software translation of the feedback device (whether alternative
Hall sensor arrangements, encoders or
I have made a servo PSU. It simply rectifies mains voltage to give me 325V DC.
https://picasaweb.google.com/lh/photo/HdNJXBD5wPqDUi9E8C46HQ?feat=directlink
https://picasaweb.google.com/lh/photo/dTcU2i7GYh53xSrqjh--BQ?feat=directlink
There is a bit of extra componentry in the box to discharge the
On Tue, 6 Sep 2011, andy pugh wrote:
Date: Tue, 6 Sep 2011 14:34:24 +0100
From: andy pugh bodge...@gmail.com
Reply-To: Enhanced Machine Controller (EMC)
emc-users@lists.sourceforge.net
To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net
Subject: [Emc-users] Servo PSU
Hi Andy;
Some years ago the US code requires earth ground and common line to be
isolated. This prevents voltage drop in the common line jacking up voltage
on the equipment. The transformer will isolate the common return for you so
your equipment will stay at earth ground and you won't glow in the
On 6 Sep 2011, at 15:21, Don Stanley dstanley1...@gmail.com wrote:
The transformer will isolate the common return for you so
your equipment will stay at earth ground and you won't glow in the dark when
you touch it.
Which transformer?
Does the Drive care that the DC is not referenced to
On Tue, 6 Sep 2011, Andy Pugh wrote:
Date: Tue, 6 Sep 2011 15:47:01 +0100
From: Andy Pugh bodge...@gmail.com
Reply-To: Enhanced Machine Controller (EMC)
emc-users@lists.sourceforge.net
To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net
Subject: Re: [Emc-users] Servo
On 9/5/2011 4:24 PM, Andrew wrote:
Hi everybody,
I'm looking for inexpensive servos for plasma table. I know DMM and Keling.
There are also used Mitsubishi/Yaskawa etc. on ebay.
What else can you suggest?
Thanks a lot,
Andrew
Andy,
looks like a neatly made power box. Rectifying AC line power without
potential insulation, however, is unusual and bears some risks.
- Be aware that both of your DC lines will have potential to ground,
none can be grounded.
- Be sure that every metallic enclosure that is powered by this
Mark Wendt wrote:
Jon,
Just curious - on your Accessories page, what's the MISC for $1.00? ;-)
If somebody needs to send me a cash amount for some miscellaneous
service rendered, like
repairing a board they damaged, this allows them to pay in $1
increments. It has no weight
set in the
andy pugh wrote:
On 6 September 2011 04:58, Jon Elson el...@pico-systems.com wrote:
I have pretty low-cost drives for the Keling brushless motors (they will
drive a variety of other motors as well.)
With software translation of the feedback device (whether alternative
Hall sensor
On 09/06/2011 12:24 PM, Jon Elson wrote:
Mark Wendt wrote:
Jon,
Just curious - on your Accessories page, what's the MISC for $1.00? ;-)
If somebody needs to send me a cash amount for some miscellaneous
service rendered, like
repairing a board they damaged, this allows them to
andy pugh wrote:
I have made a servo PSU. It simply rectifies mains voltage to give me 325V DC.
https://picasaweb.google.com/lh/photo/HdNJXBD5wPqDUi9E8C46HQ?feat=directlink
https://picasaweb.google.com/lh/photo/dTcU2i7GYh53xSrqjh--BQ?feat=directlink
There is a bit of extra componentry in the
On 6 September 2011 17:15, Peter Blodow p.blo...@dreki.de wrote:
- Think about the effects that plugging the mains plug 180 degrees
turned over could have, don't rely on wires having seemingly no
potential in one case!
This isn't possible with UK wiring.
Also, UK 240V single phase is neutral
On 6 September 2011 17:36, Jon Elson el...@pico-systems.com wrote:
No, if you rectify the mains, the -V terminal will NOT be anywhere near
neutral. It will
essentially be floating near whichever mains terminal is currently more
negative than
the other. So, it will be swinging 120 times a
2011/9/6 Jon Elson el...@pico-systems.com
Andrew wrote:
Both motors and drives.
I have pretty low-cost drives for the Keling brushless motors (they will
drive a variety
of other motors as well.) $150 per axis for up to 20 Amps and 120 V
DC. These take
PWM signals as the command from
On 6 September 2011 18:09, Andrew parallel.kinemat...@gmail.com wrote:
The less expensive - the better. This is rather DIY than industrial grade
plasma. Up to $500 per axis would be nice. We also consider steppers, but
servos looks preferable.
In that case, get motors from eBay and drives
2011/9/6 andy pugh bodge...@gmail.com
I paid £50 for three AC servos from eBay (500W) and they will be
running with Mesa 8i20 drives. (around E200)
Wow! I'll run through ebay once more. I guess you mean £50 per motor, not
for all three =)
Do all AC motors have similar connectors? I.e. MESA
On 6 September 2011 18:44, Andrew parallel.kinemat...@gmail.com wrote:
I paid £50 for three AC servos from eBay (500W) and they will be
running with Mesa 8i20 drives. (around E200)
Wow! I'll run through ebay once more. I guess you mean £50 per motor, not
for all three =)
No, I mean £50 for
On Tue, 6 Sep 2011, Peter Blodow wrote:
Date: Tue, 06 Sep 2011 18:15:33 +0200
From: Peter Blodow p.blo...@dreki.de
Reply-To: Enhanced Machine Controller (EMC)
emc-users@lists.sourceforge.net
To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net
Subject: Re: [Emc-users]
On Tue, 2011-09-06 at 17:57 +0100, andy pugh wrote:
On 6 September 2011 17:15, Peter Blodow p.blo...@dreki.de wrote:
- Think about the effects that plugging the mains plug 180 degrees
turned over could have, don't rely on wires having seemingly no
potential in one case!
This isn't
2011/9/6 andy pugh bodge...@gmail.com
You need to try a number of different search terms. I just tried
brushless in Business and Industrial on eBay US.
This looks good, it would make a great spindle motor for a
toolchanger-mill or live-tool lathe.
On 6 September 2011 20:40, Andrew parallel.kinemat...@gmail.com wrote:
Andy, I noticed that some of the motors are brushless *DC* servo. It's not
the same as *AC* servo, is it?
I have no idea what the difference is (or even if there is one) They
both work in the same way with the same drives.
On Tue, 2011-09-06 at 22:40 +0300, Andrew wrote:
... snip
Andy, I noticed that some of the motors are brushless *DC* servo. It's not
the same as *AC* servo, is it?
... snip
I believe the only difference is in the shape of the relative magnetic
fields between the armature and stator. Brushless
On 6 September 2011 21:07, Kirk Wallace kwall...@wallacecompany.com wrote:
Since we
tend to use feedback loops for EMC2 servos, AC or DC type motors should
work the same since non-ideal torque will be corrected, but I haven't
done much work with brushless motors so I'm not an expert.
More to
2011/9/5 Andrew parallel.kinemat...@gmail.com
Hi everybody,
I'm looking for inexpensive servos for plasma table. I know DMM and Keling.
There are also used Mitsubishi/Yaskawa etc. on ebay.
What else can you suggest?
Nice prices, but only expensive shipping available
Andy;
Sorry for being cryptic. The 1:1 isolation transformer you considered.
It could be a step up or step down if you wanted different DC voltage.
Consider that the DC output of the rectifier and filter will be about
1.5 times the AC voltage
Hook the input power to the transformer input leads
On 6 September 2011 23:14, Steve Blackmore st...@pilotltd.net wrote:
I've regularly seen much higher than a few volts. I think it depends a
lot on location and local wiring condition/type and ground conditions.
I am not sure I want to think to hard about this, because then I will
end up
I am trusting to cleverer folk than myself for that part.
Also, make sure the motor connections are very
well-made,
The motor connector plugs cost more than the motors. They ought to be
up to the job.
http://sineco.3dcartstores.com/assets/images/PDFs/DataSheets/MB1CKN0600.pdf
On Tuesday, September 06, 2011 10:16:17 PM andy pugh did opine:
I have made a servo PSU. It simply rectifies mains voltage to give me
325V DC.
https://picasaweb.google.com/lh/photo/HdNJXBD5wPqDUi9E8C46HQ?feat=direc
tlink
https://picasaweb.google.com/lh/photo/dTcU2i7GYh53xSrqjh--BQ?feat=direc
andy pugh wrote:
It's UK single phase, and neutral is only ever a few volts from earth.
OK, then the V- is swinging 50 times a second between -168 V from
neutral and approximately
equal to neutral.
Obviously you have full galvanic isolation between the power transistors
and the
On Tuesday, September 06, 2011 10:19:35 PM Andy Pugh did opine:
On 6 Sep 2011, at 15:21, Don Stanley dstanley1...@gmail.com wrote:
The transformer will isolate the common return for you so
your equipment will stay at earth ground and you won't glow in the
dark when you touch it.
Which
Helping Dan Field with a question on setting up the Tool table (in another
forum).
He is using the tool offset commands and cutting with a 60 degree v bit.
Does the tool table care if its a v bit or just the overall diameter?
http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?ToolTable
The wiki does
BRIAN GLACKIN wrote:
Helping Dan Field with a question on setting up the Tool table (in another
forum).
He is using the tool offset commands and cutting with a 60 degree v bit.
Does the tool table care if its a v bit or just the overall diameter?
And, if properly built, they all can be considered as industrial machines.
Chris, thank You very much for the suggestion, I will check it out,
when I have a spare moment and will let You know, if any other
questions will arise.
Viesturs
If it ends up not setting the HAL pins at the
37 matches
Mail list logo
