On 03/08/2011 01:28 PM, Kirk Wallace wrote:
On Tue, 2011-03-08 at 05:56 -0500, Mark Wendt wrote:
... snip
see things in a certain order or configuration. All the rows of LED
lights/radio buttons after row 100 have the ON radio button on top of
the OFF radio button, which is typically how we
On 9 March 2011 02:54, Clint Washburn cl...@clintandheidi.com wrote:
What would be the best way to get the voltage up to 400v DC?
You can use a voltage doubler. I have a 700VDC PSU I made which I was
going to make an Arduino-controlled VFD out of.
But then I got scared, and bought one instead.
I would recommend against putting 240 VAC into a transformer
winding originally designed for 120 VAC. While it would seem
that a transformer is a simple ratio device, this assumption
falls apart if the iron core cannot support the resulting
magnetic flux density. Too little iron and it will
For what it's worth, I have a lathe with a 7.5HP motor and used a 10HP
Hitachi VFD like this:
http://www.driveswarehouse.com/Drives/AC+Drives/Variable+Torque+VFD/X200-075LFU.html?osCsid=04e47b5d74f9275e98232b165be36c89
The Hitachi website gives directions on using the larger drives with single
On 3/9/2011 7:23 AM, RogerN wrote:
For what it's worth, I have a lathe with a 7.5HP motor and used a 10HP
Hitachi VFD like this:
...
One time I let the lathe just idle, not cutting anything, the VFD showed 13A
3 phase to the motor, the input to the drive was ~5A single phase, the VFD
Hi all,
I'm attempting to set up EMC2 to generate a PWM
signal for spindle speed control. I put a DVM on the
PWM parallel port pin in hopes to see an average
voltage of the PWM signal. But all I see is about 90mV,
and it never changes.
I tried MDI commands like:
M03 S100
and
M03 S2000
I'm
On 9 March 2011 13:55, Tony Zampini zampi...@cox.net wrote:
I'm attempting to set up EMC2 to generate a PWM
signal for spindle speed control. I put a DVM on the
PWM parallel port pin in hopes to see an average
voltage of the PWM signal. But all I see is about 90mV,
and it never changes.
I
Hello everybody,
Has anybody ever made a PWM triac control hal module/component or assemble one
from existing hal modules/components? There should be one input signal for zero
cross detector and one output signal to control the triac gate.
If not, do you think this can this be easily done
On 9 March 2011 15:21, Klemen Dovrtel klemen_dovr...@yahoo.com wrote:
Hello everybody,
Has anybody ever made a PWM triac control hal module/component or assemble
one from existing hal modules/components? There should be one input signal
for zero cross detector and one output signal to
On Wednesday, March 09, 2011 10:14:39 AM Tony Zampini did opine:
Hi all,
I'm attempting to set up EMC2 to generate a PWM
signal for spindle speed control. I put a DVM on the
PWM parallel port pin in hopes to see an average
voltage of the PWM signal. But all I see is about 90mV,
and it
Clint - I have an older Allen Bradley 1336S drive (courtesy of ebay) -
the collection of 5hp units I got without operator panels, and then
finding a panel, probably ran me about $150. I don't see those drives
at that price ($40 each!) on ebay currently. The motor was a 5hp
Craigslist find, about
On Wed, 2011-03-09 at 06:48 -0500, Steve Stallings wrote:
... snip
Using a transformer for voltages lower than rated is generally
OK as is running them in reverse. The ratio may prove
to be slightly off because the manufacturer may have
adjusted the stated ratio to compensate for the losses in
On Wednesday, March 09, 2011 11:26:57 AM Klemen Dovrtel did opine:
Hello everybody,
Has anybody ever made a PWM triac control hal module/component or
assemble one from existing hal modules/components? There should be one
input signal for zero cross detector and one output signal to control
Kirk Wallace wrote:
It might be hard to find a VFD rated higher than a few HP that can run
on 240VAC input.
http://www.automationdirect.com/adc/Overview/Catalog/Drives/GS2_%28115_-z-_230_-z-_460_-z-_575_VAC_V-z-Hz_Control%29
Short URL: http://alturl.com/qhdpo
I am running an 11 KW
Viesturs requested this so he could display a functional diagram in gladevcp
window, with HAL widgets placed at arbitrary positions over the image.
This is easy to do - a note is in the HAL Widgets Wiki page
(http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?HalWidgets at the very end)
example code
Kent A. Reed wrote:
Still, Roger's comment intrigues me. A home-based shop could cause
mystifying problems in the household if the power factor gets out of
hand. Do VFDs really make this a non-issue?
Unless you have REALLY marginal power, such as a 60 A 240 V feed, and
central air
gene heskett wrote:
It is my finding that the line sequence counts.
IOW:
S100
M3
or
S2500
m3
Always works. You must set the speed at least a line prior to issuing the
M3 command.
Huh? I have NEVER done this, I ALWAYS code it on the same line, either
in my .ngc program
or with
Not such a bad idea...
http://www.youtube.com/watch?v=xUAPrkC7Q-Qfeature=feedrec_grec_index
--
atp
Torque wrenches are for the obedience of fools and the guidance of wise men
--
Colocation vs. Managed Hosting
A question
I have been tinkering with a V90 I bought in December learning to write gcode
and using hand written programs making gadgets
Now I would like to try CAD/CAM apps
I have no experience with either
The only hard fast requirement is it run under Linux
Synergy seems a good match
Opinions???
Richard
Synergy works well for me but since I had no drafting/cad training it
came up slow. However, it is very powerful which is one reason for the
steep learning curve. The embedded demos are very helpful. There is a 30
day free demo that I would suggest you try.
It has taken me a while but now I
On Wed, 2011-03-09 at 18:02 +, andy pugh wrote:
Not such a bad idea...
http://www.youtube.com/watch?v=xUAPrkC7Q-Qfeature=feedrec_grec_index
Not so new. Been in the hobby world for years.
Dave
--
Colocation
how much does it cost?
On Wed, Mar 9, 2011 at 1:16 PM, dave dengv...@charter.net wrote:
Synergy works well for me but since I had no drafting/cad training it
came up slow. However, it is very powerful which is one reason for the
steep learning curve. The embedded demos are very helpful. There
On Wed, 9 Mar 2011, Igor Chudov wrote:
how much does it cost?
I did not see a price for Synergy, only contact customer support
Another interesting CAM app is SheetCAM
Synergy works well for me but since I had no drafting/cad training it
came up slow. However, it is very powerful which is
I just talked to Bob Schuppel at Synergy.
$250 will now get you 2D plus 3D wireframe.
It does not get you Solids ( aka parasolids with extensions)
Wireframe is more difficult to use than Solids but pretty powerful.
Bob was telling me about a case in Solidworks that would not machine.
In
On Wed, 2011-03-09 at 08:32 -0800, Kirk Wallace wrote:
On Wed, 2011-03-09 at 06:48 -0500, Steve Stallings wrote:
... snip
Using a transformer for voltages lower than rated is generally
OK as is running them in reverse. The ratio may prove
to be slightly off because the manufacturer may
On Wed, 2011-03-09 at 11:12 -0600, Jon Elson wrote:
Kirk Wallace wrote:
It might be hard to find a VFD rated higher than a few HP that can run
on 240VAC input.
http://www.automationdirect.com/adc/Overview/Catalog/Drives/GS2_%28115_-z-_230_-z-_460_-z-_575_VAC_V-z-Hz_Control%29
Short
On Wed, 2011-03-09 at 11:45 -0500, gene heskett wrote:
On Wednesday, March 09, 2011 11:26:57 AM Klemen Dovrtel did opine:
Hello everybody,
Has anybody ever made a PWM triac control hal module/component or
assemble one from existing hal modules/components? There should be one
input
On 9 March 2011 20:05, dave dengv...@charter.net wrote:
I have 3 Fanuc servo drives (SCR) just sitting on the shelf. They are
available cheap after I take off the contactor. They need ( IIRC ) 90
volts 3ph AC and 18 v dc(?).
For DC servos, or Brushless? (Yellow or red cap)
The reason I ask
On Wed, 9 Mar 2011, dave wrote:
I just talked to Bob Schuppel at Synergy.
$250 will now get you 2D plus 3D wireframe.
It does not get you Solids ( aka parasolids with extensions)
Wireframe is more difficult to use than Solids but pretty powerful.
Bob was telling me about a case in Solidworks
On 9 March 2011 20:21, kqt4a...@comcast.net wrote:
Synergy is capable of reading DXF ASCII data files in a limited way. You can
not export DXF files from Synergy.
This seems quite restrictive
DXF is nasty anyway. Not even AutoCAD can reliably read DXF files
created by their own software.
On Wed, 2011-03-09 at 14:21 -0600, kqt4a...@comcast.net wrote:
On Wed, 9 Mar 2011, dave wrote:
I just talked to Bob Schuppel at Synergy.
$250 will now get you 2D plus 3D wireframe.
It does not get you Solids ( aka parasolids with extensions)
Wireframe is more difficult to use than
On Wed, 2011-03-09 at 11:12 -0600, Jon Elson wrote:
Kirk Wallace wrote:
It might be hard to find a VFD rated higher than a few HP that can run
on 240VAC input.
http://www.automationdirect.com/adc/Overview/Catalog/Drives/GS2_%28115_-z-_230_-z-_460_-z-_575_VAC_V-z-Hz_Control%29
Short
On Wed, 2011-03-09 at 11:16 -0800, dave wrote:
Synergy works well for me but since I had no drafting/cad training it
came up slow. However, it is very powerful which is one reason for the
steep learning curve. The embedded demos are very helpful. There is a 30
day free demo that I would
- Original Message -
From: Kent A. Reed knbr...@erols.com
To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net
Sent: Wednesday, March 09, 2011 7:31 AM
Subject: [Emc-users] [OT] power factor and VFDs (was Single Phase Lathe
spindle motor question)
On 3/9/2011 7:23 AM,
Kirk Wallace schrieb:
I'm looking forward to see how this story ends.
Gentlemen,
as I mentioned before, telling from the (for me) amazingly immense
response to this topic (which actually has nothing to do with emc2), I
see a tremendous need for decent power supply in the US, probably
I've had one of the Diamond toolholder for years and I love it!! It
also comes with an adapter to hold the toolbit at the proper angle when
resharpening, making such a task a snap.
The ONLY time I don't use it is when the particular job calls for a
carbide bit, otherwise, the Diamond
On 9 March 2011 22:34, Peter Blodow p.blo...@dreki.de wrote:
I mailed to this list about a year ago
that here in Germany (and in most of Europe), every house, new built or
less than 30 to 40 years old, has a 3 phase electric supply
Not in the UK, more's the pity. If you want three phase you
On Wednesday, March 09, 2011 08:02:40 PM Jon Elson did opine:
Kirk Wallace wrote:
It might be hard to find a VFD rated higher than a few HP that can run
on 240VAC input.
http://www.automationdirect.com/adc/Overview/Catalog/Drives/GS2_%28115
_-z-_230_-z-_460_-z-_575_VAC_V-z-Hz_Control%29
On Wednesday, March 09, 2011 08:25:07 PM dave did opine:
Synergy works well for me but since I had no drafting/cad training it
came up slow. However, it is very powerful which is one reason for the
steep learning curve. The embedded demos are very helpful. There is a 30
day free demo that I
On Wednesday, March 09, 2011 08:33:49 PM dave did opine:
On Wed, 2011-03-09 at 18:02 +, andy pugh wrote:
Not such a bad idea...
http://www.youtube.com/watch?v=xUAPrkC7Q-Qfeature=feedrec_grec_index
Not so new. Been in the hobby world for years.
Dave
Now thats cute, where can I
I inherited a Dental Mill and I have it working with EMC2, but
I'm having some small problems with the spindle motor.
Sometime it doesn't want to start. It turns about 120-degrees
over and over but doesn't spin up. Sometimes it spins up fine.
I can always get it started by toggling the spindle
Peter Blodow wrote:
I think it would be worth wile to build up a powerful lobby in the US to
enforce decent power supply for everyone - what a shame for the most
powerful and most technically oriented country in the world to discuss
about how to get motors and machines running!
The
Peter Blodow wrote:
VFD's should only be used when varying frequency is desired and to
convert single phase to three phase current on a low level base, say
below 1 kW, if a three phase supply doesn't seem economical. That's what
they are made for. Analyzing costs, a decent three phase power
gene heskett wrote:
On Wednesday, March 09, 2011 08:02:40 PM Jon Elson did opine:
The current draw of
a 100 Hp motor on 240 V is about 330 A per line! Yikes, the transistors
must be the size of a brick!
Jon
I am wondering where you got those figures Jon?
OK, I was
On Wed, Mar 9, 2011 at 11:57 PM, Jon Elson el...@pico-systems.com wrote:
gene heskett wrote:
On Wednesday, March 09, 2011 08:02:40 PM Jon Elson did opine: The
current draw of
a 100 Hp motor on 240 V is about 330 A per line! Yikes, the transistors
must be the size of a brick!
I am
I got mine here...
http://www.eccentricengineering.com.au/
I use it on a 9x20 I just CNCed. I accidently got the programming wrong
turning 150mm diameter mild steel interrupted cut of 2mm depth, and it had
no problem.
There is a lot of overhang though and causes some movement with my AXA
On Thu, 2011-03-10 at 00:09 -0600, Igor Chudov wrote:
... snip
Look at this baby:
http://goo.gl/QBuc1
100 HP motor by Baldor
They say it takes 224 amps at 230v.
i
This one is cheaper :)
http://www.surpluscenter.com/item.asp?item=10-1977catname=electric
but runs 460V. I think Gene
On Thursday, March 10, 2011 01:13:26 AM Jon Elson did opine:
gene heskett wrote:
On Wednesday, March 09, 2011 08:02:40 PM Jon Elson did opine:
The current draw of
a 100 Hp motor on 240 V is about 330 A per line! Yikes, the
transistors must be the size of a brick!
Jon
I
On Thursday, March 10, 2011 01:49:45 AM Igor Chudov did opine:
On Wed, Mar 9, 2011 at 11:57 PM, Jon Elson el...@pico-systems.com
wrote:
gene heskett wrote:
On Wednesday, March 09, 2011 08:02:40 PM Jon Elson did opine:
The
current draw of
a 100 Hp motor on 240 V is about 330
On Thursday, March 10, 2011 02:11:29 AM Frank Tkalcevic did opine:
I got mine here...
http://www.eccentricengineering.com.au/
I use it on a 9x20 I just CNCed. I accidently got the programming wrong
turning 150mm diameter mild steel interrupted cut of 2mm depth, and it
had no problem.
On Thursday, March 10, 2011 02:21:13 AM Kirk Wallace did opine:
On Thu, 2011-03-10 at 00:09 -0600, Igor Chudov wrote:
... snip
Look at this baby:
http://goo.gl/QBuc1
100 HP motor by Baldor
They say it takes 224 amps at 230v.
i
This one is cheaper :)
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