...
John
On 5/24/2012 11:53 AM, Kirk Wallace wrote:
On Thu, 2012-05-24 at 10:05 -0500, John Thornton wrote:
I've built several rotary phase converters using plans from the web but
they all seem to stop at adding a few caps to balance the voltage and
the auto start circuit with the potential relay
the generated leg.
John
On 5/24/2012 12:42 PM, Jon Elson wrote:
John Thornton wrote:
I've built several rotary phase converters using plans from the web but
they all seem to stop at adding a few caps to balance the voltage and
the auto start circuit with the potential relay.
Have you ever peeked
I wonder why they don't publish their prices or show you the open cabinet?
John
On 5/24/2012 1:11 PM, Ralph Stirling wrote:
I'm surprised nobody has mentioned the solution to this problem
I always see over at Practical Machinist CNC forum. The preferred
solution to creating 3 phase power
Be interesting to find out the prices...
John
On 5/24/2012 3:08 PM, Dave wrote:
On 5/24/2012 2:11 PM, Ralph Stirling wrote:
I'm surprised nobody has mentioned the solution to this problem
I always see over at Practical Machinist CNC forum. The preferred
solution to creating 3 phase power
/download/f55b9d8378
Nothing inexpensive about them.
Dave
On 5/24/2012 4:26 PM, John Thornton wrote:
Be interesting to find out the prices...
John
On 5/24/2012 3:08 PM, Dave wrote:
On 5/24/2012 2:11 PM, Ralph Stirling wrote:
I'm surprised nobody has mentioned the solution to this problem
I
transformer commutating reactor infeed
unit (power supply)]
On 5/24/2012 8:37 PM, Jon Elson wrote:
John Thornton wrote:
This is the third motor I've tried on this beast. The current one is a
15hp 1750 rpm very heavy built with a large multi-belt pulley on the
shaft. I've tried cap combinations out
Jon,
Thanks for that lead, a quick search and I found a 6 page instructions
for making a 10hp and tuning it up as well. He goes into great detail
and makes it simple to try. I see his start circuit is a bit different
than mine as he uses a control transformer but I have a large box of
phase
to compaire at least one line phase to the generated phase.
Thanks
John
On 5/24/2012 9:17 PM, gene heskett wrote:
On Thursday, May 24, 2012 09:59:35 PM John Thornton did opine:
My research shows that a suitable single phase motor to drive a
generator does not exist above 7.5 hp and even at that level
Do you have an example circuit of this that I can drool over?
Thanks
John
On 5/24/2012 11:50 PM, Erik Christiansen wrote:
On 24.05.12 20:31, Jon Elson wrote:
Kirk Wallace wrote:
I would think an Aurdino like processor could measure the voltage
and current on each phase and switch
I have 2 10hp and 1 15hp motors and enough parts to make 3 rotary phase
converters. Total capital invested is in the $750-$1000 range. That size
motor used is cheap around here. As for turning it back into cash that
would be more difficult as there is not much demand for phase converters
that
That's a neat solution... how will you mount the disk? I assume the disk
is a mask for a dark background?
John
On 5/25/2012 7:09 AM, andy pugh wrote:
I have built a motor.
Internal space is quite tight, so I am using the Avago AEDR8340K
encoder detector
I sent perfect phase an email with a bunch of questions so we will see
what they say. In the mean time I'll try the Fitch tuning method for the
rotary phase converter.
John
On 5/25/2012 6:45 AM, andy pugh wrote:
On 25 May 2012 11:42, John Thorntonbjt...@gmail.com wrote:
Thanks for the price
Totally missed the second paragraph... no I've not checked to see if it
works on single phase. I'll get the model number in a bit. If you can
decipher the Siemens documents my hat is off to you sir as it is really
confusing to me.
John
On 5/25/2012 6:45 AM, andy pugh wrote:
On 25 May 2012
Andy,
The infeed unit is a 6SN1145-1BA00-0BA0
If you can shed any light in that tunnel that would great
Thanks
John
On 5/25/2012 6:45 AM, andy pugh wrote:
On 25 May 2012 11:42, John Thorntonbjt...@gmail.com wrote:
Thanks for the price sheet. That is over double what I can get a diesel
Ok, what I had been running was 4x60uf caps between 1 and 3 and 1x60uf
cap between 2 and 3 (generated leg on 3 then) and that seemed to work
the best.
at the phase converter
to ground 1 = 120v, 2 = 120v, 3 = 226v
phase to phase 1 + 2 = 244v, 2 + 3 = 248v, 1 + 3 = 262v
at the 380v taps on the
John's shop and the 3 phase is hanging on the pole 50' from his shop.
Plus they have a minimum monthly charge that would buy a phase perfect
rather fast.
John
On 5/25/2012 8:13 AM, gene heskett wrote:
On Friday, May 25, 2012 09:04:33 AM John Thornton did opine:
It's hard to say but I think
Gene,
The scope is a Tektronix 2232 if you can shed any light on how to
capture two waves with it I'm all ears.
Thanks
John
On 5/24/2012 9:17 PM, gene heskett wrote:
On Thursday, May 24, 2012 09:59:35 PM John Thornton did opine:
My research shows that a suitable single phase motor to drive
Could this be part of the issue? chapter 7 harmonics bouncing back from
the caps in the rotary phase converter perhaps? so maybe a filter...
real early here so only partially awake
John
When the requirements regarding system fault level are observed and when
using the appropriate line supply
That does sound like a cheaper alternative. I used to do that trick with
Hatachi drives to power up vibratory feeder bowls that came tuned to 50
herz and would not run in the US on 60 herz.
I think I try and tune my 10hp phase converter using the new information
I have on tuning a rotary phase
The coop never had meter readers, you used to have to read your own
meter. Now they are automagic and report back to the mother ship over
the wires.
John
On 5/25/2012 3:24 PM, gene heskett wrote:
On Friday, May 25, 2012 04:16:35 PM John Thornton did opine:
It's two miles away up
I should be able to get a screen shot of the front panel from the manual
when I get back from the big city this afternoon... now I just have to
remember that long.
John
On 5/25/2012 3:34 PM, gene heskett wrote:
On Friday, May 25, 2012 04:25:36 PM John Thornton did opine:
Gene,
The scope
When I monitored the DC buss it was rock steady at 600-601v while running.
John
On 5/25/2012 9:00 PM, Jon Elson wrote:
gene heskett wrote:
However, if the problem is related to the spikes on the line caused by slow
recovery characteristics of the diodes in this kits high voltage DC supply,
John
On 5/25/2012 9:08 PM, Jon Elson wrote:
John Thornton wrote:
Ok, what I had been running was 4x60uf caps between 1 and 3 and 1x60uf
cap between 2 and 3 (generated leg on 3 then) and that seemed to work
the best.
You may just need to up these capacitors.
at the phase converter
to ground 1
Gene,
The scope is a Tektronix 2232 if you can shed any light on how to
capture two waves with it I'm all ears.
Thanks
John
On 5/24/2012 9:17 PM, gene heskett wrote:
On Thursday, May 24, 2012 09:59:35 PM John Thornton did opine:
My research shows that a suitable single phase motor to drive
inbalance
and tripping out on a phase loss error. The Elk Grove guys might know a way
to get around that situation.
Dave
On 5/26/2012 7:04 AM, John Thornton wrote:
Could this be part of the issue? chapter 7 harmonics bouncing back from
the caps in the rotary phase converter perhaps? so
Gene,
The phaseperfect install guide did mention that when you need balanced
voltage to ground to use a delta wye transformer after their device. So
I have to assume they are out there but so far my google only turns up
descriptions of the beast.
John
On 5/27/2012 4:09 PM, gene heskett
I've been searching for isolation transformer but they all seem to be
480 to 240 or similar. Not had any luck so far on finding a 240-240
transformer.
John
On 5/28/2012 5:00 AM, gene heskett wrote:
On Monday, May 28, 2012 05:46:09 AM andy pugh did opine:
On 28 May 2012 09:39, gene
At least I know what an autotransformer is now after following your
links... and a little google work.
An autotransformer is an electrical transformer with only one winding.
The auto prefix refers to the single coil acting on itself rather than
any automatic mechanism. In an autotransformer
a small line reactor that I
plan on hooking up just to scope what it might do. Line reactors are
cheap compared to other options...
Thanks
John
On 5/28/2012 12:37 PM, Jon Elson wrote:
John Thornton wrote:
I've been searching for isolation transformer but they all seem to be
480 to 240
as drive isolation transformers.
You have a step up transformer in your machine right now though, prior
to your Siemens 611U power input module (fancy DC power supply); How
is that wired?
Dave
On 5/28/2012 8:05 AM, John Thornton wrote:
Gene,
The phaseperfect install guide did mention
Actually the docs should/will say Cutter Diameter Compensation to avoid
that confusion. And yes your correct the radius is calculated from the
diameter information to do the actual offsetting.
Do you have a link to the example that is confusing?
John
On 5/29/2012 2:13 AM, charles green wrote:
I filled out the quote form to see what they say.
John
On 5/28/2012 11:12 AM, gene heskett wrote:
On Monday, May 28, 2012 11:53:29 AM John Thornton did opine:
Gene,
The phaseperfect install guide did mention that when you need balanced
voltage to ground to use a delta wye transformer after
29, 2012 07:33:26 AM John Thornton did opine:
While laying on the floor to change taps yesterday on the step up
transformer I noticed it says INPUT WYE. The transformer has 3 sets of 3
lugs for input 208, 220, 240. The only other wires on the transformer
are 3 lugs for 390v to the infeed unit
Well I'll be a monkeys uncle, the step up transformer does have a N lug
but nothing is connected to it.
Voltages at the drive input are
UV 525
UW 512
VW 508
Ug 225
Vg 225
Wg 370
John
On 5/29/2012 6:44 AM, gene heskett wrote:
On Tuesday, May 29, 2012 07:33:26 AM John Thornton did opine
Yea, the tool table is diameter as well as all the G codes no matter if
your in lathe mode or not.
John
On 5/29/2012 7:03 AM, andy pugh wrote:
On 29 May 2012 12:30, John Thorntonbjt...@gmail.com wrote:
Actually the docs should/will say Cutter Diameter Compensation to avoid
that confusion.
It seems that phase perfect works together with
http://www.transformeronline.com/prices/threephasetransformer.htm
The have several sizes of 240 delta to 208 Y... how do you pick a size?
John
On 5/29/2012 7:09 AM, gene heskett wrote:
On Tuesday, May 29, 2012 07:48:08 AM John Thornton did opine
-users] cutter radius compensation versus tool table data
To: Enhanced Machine Controller (EMC)emc-users@lists.sourceforge.net
Date: Tuesday, May 29, 2012, 5:03 AM
On 29 May 2012 12:30, John Thornton
bjt...@gmail.com
wrote:
Actually the docs should/will say Cutter Diameter
Compensation to avoid
heskett wrote:
On Tuesday, May 29, 2012 09:02:11 AM John Thornton did opine:
It seems that phase perfect works together with
http://www.transformeronline.com/prices/threephasetransformer.htm
The have several sizes of 240 delta to 208 Y... how do you pick a size?
John
Is there a nameplate
I assume that I should be able to see some resistance between N and H1,
H2, and H3 if it is on the input side?
John
On 5/29/2012 9:18 AM, andy pugh wrote:
On 29 May 2012 13:16, John Thorntonbjt...@gmail.com wrote:
Well I'll be a monkeys uncle, the step up transformer does have a N lug
but
On 5/29/2012 9:04 AM, gene heskett wrote:
On Tuesday, May 29, 2012 09:02:11 AM John Thornton did opine:
It seems that phase perfect works together with
http://www.transformeronline.com/prices/threephasetransformer.htm
The have several sizes of 240 delta to 208 Y... how do you pick a size
N reads 2.5m ohms to ground and 0 ohms to every other terminal on the board.
John
On 5/29/2012 9:18 AM, andy pugh wrote:
On 29 May 2012 13:16, John Thorntonbjt...@gmail.com wrote:
Well I'll be a monkeys uncle, the step up transformer does have a N lug
but nothing is connected to it.
Do you
N to each X is.1 ohm
X to X is .2 ohm
John
On 5/29/2012 9:57 AM, gene heskett wrote:
On Tuesday, May 29, 2012 10:39:54 AM John Thornton did opine:
This is a shot of the stepup transformer. All the taps are for the input
side... I kinda wondered about jacking with the hot leg but didn't try
Where should the 208v be? The mains are 244vac.
John
On 5/29/2012 12:11 PM, Jon Elson wrote:
gene heskett wrote:
I have another wild idea, your Vab, Vac, Vbc voltages would appear to be
moderately well balanced, as they should be. The generated C, measured to
ground, is quite hot as is also
When it trips it is so fast you can't see any change on the meter, if
only I had an analog meter I could watch the needle swing.
John
On 5/29/2012 12:14 PM, Jon Elson wrote:
John Thornton wrote:
I spent the day swapping out the 15hp idler in the RPC for my 10hp idler
(much quieter by far
The spindle drive is 6,000 rpm.
I've not tried tap hopping yet... any downside to that?
John
On 5/29/2012 12:17 PM, gene heskett wrote:
On Tuesday, May 29, 2012 01:05:21 PM John Thornton did opine:
N to each X is.1 ohm
X to X is .2 ohm
Damn, another good what if shot to hell. I hate
or cad?
John
On 5/29/2012 2:45 PM, gene heskett wrote:
On Tuesday, May 29, 2012 03:10:01 PM John Thornton did opine:
Where should the 208v be? The mains are 244vac.
That means your wall socket voltage is about 122. Using the same math in
kcalc, I get 211.310198523, but the meter will be great
wrote:
On Tuesday, May 29, 2012 03:46:29 PM John Thornton did opine:
The spindle drive is 6,000 rpm.
I've not tried tap hopping yet... any downside to that?
John
I think the trip off will tell you that. So far, IIRC, you've managed to
hit half speed, and when you lowered it by choosing
The largest motor on the VMC is 20 amps so the name plate says... and I
assume that is the spindle servo.
John
On 5/29/2012 9:34 PM, Jon Elson wrote:
gene heskett wrote:
So, we're probably back to an about 30 KVA isolation transformer.
Oh, MY! If he needs a 30 KVA transformer, then he
as low as possible on L1.
John
On 5/29/2012 9:51 PM, Jon Elson wrote:
John Thornton wrote:
Where should the 208v be? The mains are 244vac.
If you measure from the mains neutral (which is NOT the center point
of the 3-phase system) to the generated leg, it should be about 208 Volts
/29/2012 9:53 PM, Jon Elson wrote:
John Thornton wrote:
When it trips it is so fast you can't see any change on the meter, if
only I had an analog meter I could watch the needle swing.
Right, that's why I was suggesting making the spindle accelerate to just
less than what
causes it to trip. I
in some more caps when the load increases has some merit.
John
On 5/29/2012 10:24 PM, gene heskett wrote:
On Tuesday, May 29, 2012 11:04:48 PM Jon Elson did opine:
John Thornton wrote:
Where should the 208v be? The mains are 244vac.
If you measure from the mains neutral (which is NOT the center
Neat!, but a different wiz...
John
On 5/30/2012 6:49 AM, andy pugh wrote:
On 30 May 2012 12:26, John Thorntonbjt...@gmail.com wrote:
I just discovered last night that my neighbor is a wiz at running a
scope
This Wiz?
http://www.eeggs.com/items/11778.html
Hi Dennis,
I have a 2.5 diameter facing mill that I use and I don't notice any
difference when using that. My machine lights do not dim during
acceleration which I assume is a good thing. I'm in the same canoe as
you with 240v single phase my only option to work with.
Before all the
(just to make sure in case of an abort)
o100 repeat [45]
Position tool at start of cut
Slot cutting
Position tool at safe Z
G0 X0 Y0
#current-r = [#current-r + 8]
G10 L2 P1 R#current-r
o100 endrepeat
M2
On 5/30/2012 6:59 AM, gene heskett wrote:
On Wednesday, May 30, 2012 07:15:28 AM John Thornton did
Only on a LinuxCNC machine will that work... this one is still the DX32
control.
John
On 5/30/2012 8:07 AM, andy pugh wrote:
On 30 May 2012 13:45, John Thorntonbjt...@gmail.com wrote:
Before all the experiments I could get 0 to 2k with no problems and
would structure my programs around
Thanks Alex
John
On 5/30/2012 7:55 AM, Alex Joni wrote:
http://en.wikipedia.org/wiki/RC_circuit
from there:
http://en.wikipedia.org/wiki/File:RC_Series_Filter_(with_V%26I_Labels).svg
and the response:
http://en.wikipedia.org/wiki/File:Series_RC_capacitor_voltage.svg
Regards,
Alex
, 2012 07:15:28 AM John Thornton did opine:
I don't have a pole can... I live out in the woods and all the services
are underground and I'm serviced with a pad mounted transformer that
only feeds my house and shop. I have a 200 amp service that is split
between my house and the shop and both have
into the newer VFDs so they can run off a Delta supply.
H...
What are you going to do next?
Perhaps I missed something; Did you figure out if that transformer in your
machine is a Delta-Wye transformer or not?
Dave
On 5/30/2012 11:26 AM, John Thornton wrote:
Dave and everyone who
On 5/30/2012 11:30 AM, gene heskett wrote:
On Wednesday, May 30, 2012 12:06:22 PM John Thornton did opine:
A subroutine using a coordinate system rotate might be the simplest
method. Establish the center of your disk as X and Y0 and do a G10 L2 R
between slots. Something like the following
I'm guessing I don't need near that size perhaps 9-10 KVA?
John
On 5/30/2012 12:20 PM, Dave wrote:
On 5/30/2012 12:34 PM, andy pugh wrote:
On 30 May 2012 17:15, Davee...@dc9.tzo.com wrote:
Perhaps I missed something; Did you figure out if that transformer in your
machine is a Delta-Wye
On 5/30/2012 12:56 PM, gene heskett wrote:
On Wednesday, May 30, 2012 01:46:13 PM John Thornton did opine:
On 5/30/2012 11:30 AM, gene heskett wrote:
On Wednesday, May 30, 2012 12:06:22 PM John Thornton did opine:
A subroutine using a coordinate system rotate might be the simplest
method
Unfortunately it is still running the old DX32 control.
John
On 5/30/2012 1:00 PM, Jon Elson wrote:
John Thornton wrote:
The resistor/capacitor would be a low cost experiment. How do you
calculate what the values are for the resistor and the cap? Did you put
the resistor in series with one
doesn't even have a neutral connection
and neither does the machine.
From the tone of the tech's voice he hears this problem a lot with 611
drive and rotary phase converters.
John
On 5/30/2012 1:12 PM, Jon Elson wrote:
John Thornton wrote:
I just got off the phone with Siemens tech support
Those both show an isolating transformer with a bonded neutral on the
secondary side as well as a line filter.
Is the isolating transformer depicted a delta wye?
John
On 5/30/2012 2:37 PM, andy pugh wrote:
On 30 May 2012 20:19, John Thorntonbjt...@gmail.com wrote:
In that manual after a
That's a good idea, I don't hang out at the Zone any more but it's worth
a shot.
John
On 5/30/2012 9:02 PM, Jon Elson wrote:
John Thornton wrote:
From the tone of the tech's voice he hears this problem a lot with 611
drive and rotary phase converters.
Well, have you checked on CNCZone
As an electrician I would agree with you normally. When you leave the
world of power distribution and enter the world of electronics the
rules might change. In any case I know Andy was just pulling my leg.
John
On 5/30/2012 8:29 PM, fritz wrote:
On 05/29/2012 12:07 PM, andy pugh wrote:
On 29
converters.
The 611 drives are very popular. Many machine manufacturers used them for
many years. Those guys have pretty much heard it all.
Dave
On 5/30/2012 3:19 PM, John Thornton wrote:
When we ran the generator we connected the 3 hots as usual and I don't
recall if we grounded
to find out
the price. Input taps for 220 and 240?
How is the encoder disk coming along?
John
On 5/31/2012 7:21 AM, gene heskett wrote:
On Thursday, May 31, 2012 07:34:36 AM John Thornton did opine:
Interestingly I had a bit of time last night and did some more voltage
measurements
A little update this morning after last night's experiments I built on
that a bit this morning. I upped the MFD's on the B-C and A-C caps a
little at a time till I got close to what I think I wanted in voltage.
This is what I ended up with...
Phase === A-BB-CA-C
Caps
I've caused my 10hp to grunt with a big load and it appears to slow
down then get back up to speed. I've drawn my 3hp RPC down so far the
potential relay kicked the start caps back in... it was at that point I
knew I could not run my Enco in high speed from the 3hp RPC. The 15hp
has a sizable
to attach it. It would help the motor supply surge current
to the 611 drive.
Dave
On 5/31/2012 10:04 AM, John Thornton wrote:
A little update this morning after last night's experiments I built on
that a bit this morning. I upped the MFD's on the B-C and A-C caps a
little at a time till I
and borrow one first.
Know of any plants where you do work that has a spare transformer lying
around?
I've put a couple of them together before to get the right voltage.. IE
240 to 480 and then 480 to 380 etc.
Dave
On 5/31/2012 12:06 PM, John Thornton wrote:
I just ran another program
, 2012 11:28:24 AM John Thornton did opine:
I'm sure fresh bearings would help the 15hp and it is a heavy duty TEFC
motor. I might pull it apart today and order some new ones...
I didn't measure the temperature of the 10hp and only ran a few minutes
but I'll keep an eye on it.
I didn't ask
Well that and for fun too... but I do have a backlog of money to make...
John
On 5/31/2012 11:56 AM, gene heskett wrote:
On Thursday, May 31, 2012 12:53:37 PM John Thornton did opine:
A little update this morning after last night's experiments I built on
that a bit this morning. I upped
Not too long ago I replaced every cap in the infeed unit, so I know they
are all fresh.
John
On 5/31/2012 12:27 PM, Jon Elson wrote:
John Thornton wrote:
The interesting
thing that I discovered is if I start up the Samson lathe with the 611
on I get a fault and have to reset the drive
Dunno where you read that but I use G92 for every cutting operation on
my plasma table... making sure to clear them when done. I jog to the
start point and that becomes XY 0 for the duration of the cut.
John
On 5/31/2012 12:29 PM, mjb1...@gmail.com wrote:
I've written a subroutine that starts
I'm not sure what the drives are as they are all in one modular unit and
have interconnecting communications between the infeed unit and all the
drives. My local voltage is 240 on the mains with 120 to neutral. I've
not seen any inverters designed to take single phase in larger than 3hp,
I
That is a very old link and is no longer there. The online docs are here:
http://linuxcnc.org/index.php/english/documentation
On 5/31/2012 2:37 PM, Viesturs Lācis wrote:
Little OT, regarding homepage: I got curious to find out, what exactly
does G92 do and went to search the web.
I found out
That is just stale goo cash I assume... none of the old links are any
good due to the restructuring of the manuals for 2.5.
Best is to use the goo site search like this G21 site:linuxcnc.org
John
On 5/31/2012 3:29 PM, Viesturs Lācis wrote:
Thank You!
Any chance to put redirect or something?
yea, non of those pertain to LinuxCNC... I have started a LinuxCNC G
code tutorial but it is in it's quite small but is for LinuxCNC exclusively.
John
On 5/31/2012 3:43 PM, Mike Bennett wrote:
It was this thread that made me question it:
the width
between the slots?
John
On 5/31/2012 10:43 PM, gene heskett wrote:
On Thursday, May 31, 2012 11:29:49 PM John Thornton did opine:
Are you tapering the slots so the edges are perpendicular to the center?
That was I believe the general idea, John.
I have the next one about 1/3rd done
the slots could be done with less than 30 lines of code
and using rotate. One bad thing I noticed is the arcs are using radius
which is known to not be perfect in some cases.
On 5/31/2012 10:43 PM, gene heskett wrote:
On Thursday, May 31, 2012 11:29:49 PM John Thornton did opine:
Are you tapering
Gene,
I used debug to capture the path of the first slot and put it into my
subroutine. Run the following in sim and see what you think. Even at F2
and 0.001 DOC one slot only takes a smidgen over 2 minutes to cut in my
sim.
F2
T1 M6 G43
#z-final = -0.025
#z-step = 0.001
G0 X1.1 Y0 Z0.05
On 6/1/2012 7:28 AM, gene heskett wrote:
On Friday, June 01, 2012 07:20:37 AM John Thornton did opine:
No wonder that file takes so long it makes one pass at the OD
:) To check fixture clearances.
then
rapids to a slot makes one pass then rapids to the next slot... then
rapids
why I would try and borrow one first.
Know of any plants where you do work that has a spare transformer lying
around?
I've put a couple of them together before to get the right voltage.. IE
240 to 480 and then 480 to 380 etc.
Dave
On 5/31/2012 12:06 PM, John Thornton wrote:
I just ran
I just pulled that feed rate out of my ear, assuming if you actually
tried to cut you would replace it with a feed rate that worked for you.
John
On 6/1/2012 5:44 PM, gene heskett wrote:
John T.: I did a short pass with your code, cutting 2 slots. Feed way too
fast, the slots were badly S
/2012 5:52 PM, gene heskett wrote:
On Friday, June 01, 2012 06:50:05 PM John Thornton did opine:
I posted on the C(ommerical)NCZone and a guy there says those drives are
rated for a 3% inductance wye isolation transformer.
John
BS alert there John. 3% of what? Without a frame of reference
Currently with the 10hp idler and the Samson lathe running as a second
idler and the 611 in the BP 308 on I have the voltage balanced at 245
between all three phases give or take one volt. The VMC will make parts
and run at 2k with full rapid speeds or ramp up with G code to 6k and
run about
On 6/2/2012 2:14 PM, Dave wrote:
Unfortunately if he buys a transformer it still might not work. That
is why I would try and borrow one before opening my wallet for $1400.
I hope to borrow one before dumping more cash into this machine, as
stiff as the phase converter is not I'm wondering
an
hour our of it.
Still, a drive isolation transformer might clear up these problems entirely
(assuming the infeed unit is not malfunctioning)
Dave
On 6/3/2012 9:08 AM, John Thornton wrote:
Currently with the 10hp idler and the Samson lathe running as a second
idler and the 611
with disabling
regeneration might solve your problems?
Dave
On 6/3/2012 9:29 AM, John Thornton wrote:
On 6/2/2012 2:14 PM, Dave wrote:
Unfortunately if he buys a transformer it still might not work. That
is why I would try and borrow one before opening my wallet for $1400.
I hope to borrow one
distorted sine waves (with harmonics), perhaps putting the infeed into
square wave mode would
make it much more tolerant of line noise ??
Or perhaps turning on square wave input mode along with disabling
regeneration might solve your problems?
Dave
On 6/3/2012 9:29 AM, John Thornton wrote
I make some parts.
John
On 6/3/2012 1:50 PM, Jon Elson wrote:
John Thornton wrote:
Currently with the 10hp idler and the Samson lathe running as a second
idler and the 611 in the BP 308 on I have the voltage balanced at 245
between all three phases give or take one volt. The VMC will make
.
Dave
On 6/3/2012 11:43 AM, John Thornton wrote:
My infeed looks like Fig 6-2 on page 6-143.
John
On 6/3/2012 9:44 AM, Dave wrote:
What is your S1-3 dipswitch switch settings on the infeed module? Do
you have regeneration back into the line turned on?
That might be a situation
stuff) is rated for 600
volts. Most good DVM leads are rated for at least 600 volts. That
way perhaps you can glance at the meter when you hear the tone change.
Dave
On 6/4/2012 6:40 AM, John Thornton wrote:
Yesterday I made some parts and had a giant fan on the drive to see
.
. A multimeter, like an old Simpson 260, will gradually start reading
high, but eventually will pin the needle and let all the magic smoke out.
Don't ask me how I know. :)
On 6/4/2012 6:40 AM, John Thornton wrote:
Yesterday I made some parts and had a giant fan on the drive to see if
it is a cooling
You should have seen that redneck circus... that was funny trying to
keep the power unit running anything near 1800 RPM with no frequency
feedback.
John
On 6/4/2012 1:12 PM, Jon Elson wrote:
ceen...@in-front.com wrote:
Hi John,
Too bad you can't connect your machine to a solid 3-ph line to
On 24 Jul 2007 at 12:46, [EMAIL PROTECTED] wrote:
Based on the description of the board, I see no reason why it would
not work with emc's hal_parport in I or O mode.
It would not work with boards like the Universal Stepper Controller or
Pluto Servo Controller which use the parallel port
Is it possible to change the EMC2 Interface? For example I'm used to having an
X,
Y, Z Zero button. Only one interface has a X Zero button.
Thanks
John
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Still grepping
I do know about the Axis Slider on TkEMC as far as setting the jog speed.
Does the number indicate the jog speed in inches per minute when your units are
Inches?
I found the tkemc.tcl file and it appears to be a basic like language.
What language is it?
Is the file read each time you load
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