Greetings,
I am now setting up my new X axis servo with an AMT 102 encoder.
The motor is normally dithering between 0.0003 and 0.0006 inches.
But every now and then - for no obvious reason it jumps up to 0.02+ inches and
doesn't attempt to return to the correct location. It just jumps
On 26 May 2012 09:26, Jeshua Lacock jes...@3dtopo.com wrote:
I wish I had a magnet implant like this guy that can feel magnetic fields:
Get careless enough with the swarf on your machine and it is likely to happen.
(I have had painful shocks from 5V which has led me to locate bits of
embedded
how many wires is your encoder Jeshua?
j.
On Sat, May 26, 2012 at 10:26 AM, Jeshua Lacock jes...@3dtopo.com wrote:
Greetings,
I am now setting up my new X axis servo with an AMT 102 encoder.
The motor is normally dithering between 0.0003 and 0.0006 inches.
But every now and then - for
did you twist the powerwires of the motor together to minimize stray
magnetic fields from the cable?
j.
On Sat, May 26, 2012 at 12:48 PM, Jan de Kruyf jan.de.kr...@gmail.comwrote:
how many wires is your encoder Jeshua?
j.
On Sat, May 26, 2012 at 10:26 AM, Jeshua Lacock jes...@3dtopo.com
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 on the
On Saturday, May 26, 2012 06:46:14 AM Pablo Valbuena did opine:
Hello to you all:
My name is Pablo Valbuena. Some years ago I followed the activity of
the EMC group. I even attended the 2004 annual meeting in Ann Arbor.
There I met many of the great contributors, among them Ray Henry. I
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,
I'm going to put the 10hp back in and tune the phase converter using the
Fitch method. I've never seen using a cap across A and B before. He uses
both amps and volts to tune and the instructions are very good and seems
worth a good try.
http://www.practicalmachinist.com/FitchWConverter.pdf
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
On Saturday, May 26, 2012 07:12:02 AM Jeshua Lacock did opine:
Greetings,
I am now setting up my new X axis servo with an AMT 102 encoder.
The motor is normally dithering between 0.0003 and 0.0006 inches.
But every now and then - for no obvious reason it jumps up to 0.02+
inches and
If line filters are used that SIEMENS has not certified for use with
SIMODRIVE
6SN11xx/6SLxx, this can result in harmonics being fed back into the line
supply. These harmonics can damage/disturb other equipment connected to
this line supply.
What they are talking about here is that if you do not
On Sat, 2012-05-26 at 02:26 -0600, Jeshua Lacock wrote:
Greetings,
I am now setting up my new X axis servo with an AMT 102 encoder.
The motor is normally dithering between 0.0003 and 0.0006 inches.
But every now and then - for no obvious reason it jumps up to 0.02+ inches
and doesn't
First, the Hurco is alive! I carved emc/axis into a piece of aluminum
yesterday; thanks to all the participants for creating supporting
emc/lcnc/linuxcnc/etc.
Now to the next level - I'm using a hall sensor to detect spindle rpm; I
get a clean low-going pulse each revolution, as expected.
Jeshua Lacock wrote:
Greetings,
I am now setting up my new X axis servo with an AMT 102 encoder.
The motor is normally dithering between 0.0003 and 0.0006 inches.
But every now and then - for no obvious reason it jumps up to 0.02+ inches
and doesn't attempt to return to the correct
John Thornton wrote:
Looking at his diagram is there a way to tell which is A B and C on the
motor? does that translate to the wire numbers 1, 2 and 3? Is there a
way to meter the wires to tell which is A, B and C?
It doesn't really matter, but I guess the phase rotation does matter.
John Thornton wrote:
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.
In the box labeled vertical, there is a mode switch, set it to both.
To the right, set the
switch to alt, it will alternate between the two channels.
On 26 May 2012 16:21, lloyd wilson llwilso...@rochester.rr.com wrote:
The velocity output always reports as a negative number
I don't know why it does that, but setting the encoder scale to a
negative number will fix it.
--
atp
If you can't fix it, you don't own it.
could you negate the scale of the encoder counter?
sam
On 05/26/2012 10:21 AM, lloyd wilson wrote:
First, the Hurco is alive! I carved emc/axis into a piece of aluminum
yesterday; thanks to all the participants for creating supporting
emc/lcnc/linuxcnc/etc.
Now to the next level - I'm
negativity should work, understanding would be more satisfying.
-ldw
On 05/26/2012 12:12 PM, sam sokolik wrote:
could you negate the scale of the encoder counter?
sam
On 05/26/2012 10:21 AM, lloyd wilson wrote:
First, the Hurco is alive! I carved emc/axis into a piece of aluminum
2012/5/26 lloyd wilson llwilso...@rochester.rr.com:
Now to the next level - I'm using a hall sensor to detect spindle rpm; I
get a clean low-going pulse each revolution, as expected. This is fed as
input to the A channel of a hostmot2 encoder (running in counter mode).
My apologies, if I am
On Sat, 26 May 2012, lloyd wilson wrote:
Date: Sat, 26 May 2012 12:20:38 -0400
From: lloyd wilson llwilso...@rochester.rr.com
Reply-To: Enhanced Machine Controller (EMC)
emc-users@lists.sourceforge.net
To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net
Subject: Re:
On 05/26/2012 12:52 PM, Peter C. Wallace wrote:
snip
2. Some configurations do not have B inputs as they are just used for counting
applications. In this case the counter will always count down (since
unconnected inputs are terminated in a 0 state internally in the FPGA)
Peter Wallace
On May 26, 2012, at 4:50 AM, Jan de Kruyf wrote:
did you twist the powerwires of the motor together to minimize stray
magnetic fields from the cable?
I did not know about that!
I guess that will be my first cause of action….
Best,
Jeshua Lacock
Founder/Engineer
3DTOPO Incorporated
On May 26, 2012, at 5:44 AM, gene heskett wrote:
On Saturday, May 26, 2012 07:12:02 AM Jeshua Lacock did opine:
Greetings,
I am now setting up my new X axis servo with an AMT 102 encoder.
The motor is normally dithering between 0.0003 and 0.0006 inches.
But every now and then - for
On May 26, 2012, at 9:49 AM, Jon Elson wrote:
Jeshua Lacock wrote:
Greetings,
I am now setting up my new X axis servo with an AMT 102 encoder.
The motor is normally dithering between 0.0003 and 0.0006 inches.
But every now and then - for no obvious reason it jumps up to 0.02+ inches
On 26 May 2012 21:10, Jeshua Lacock jes...@3dtopo.com wrote:
http://3DTOPO.com/CNC-enclosure.png
Don't judge me too harshly, I was making sure everything works before I
finish tiding things up! Any suggestions would be greatly appreciated!
You could try routing the power and encoder in
On May 26, 2012, at 2:16 PM, andy pugh wrote:
On 26 May 2012 21:10, Jeshua Lacock jes...@3dtopo.com wrote:
http://3DTOPO.com/CNC-enclosure.png
Don't judge me too harshly, I was making sure everything works before I
finish tiding things up! Any suggestions would be greatly appreciated!
Dave,
Thanks for the info on the Elk Park guys. After I go through tuning my
10hp phase converter I'll give them a call on Wednesday (let the ones
with read problems have Tuesday).
John
On 5/26/2012 7:28 AM, Dave wrote:
If line filters are used that SIEMENS has not certified for use with
On Saturday, May 26, 2012 08:30:46 PM Jeshua Lacock did opine:
Sorry for the late reply, I rebooted this box because it was getting laggy
early this morning, an the whole darned nvidia-current chain took a dump on
me. Just now got it back among the living.
On May 26, 2012, at 5:44 AM, gene
On Sat, 2012-05-26 at 13:45 -0600, Jeshua Lacock wrote:
... snip
Interesting. So the pull down resistor would go on the encoder ground?
No, between the encoder input terminal for each input having a problem
to the ground associated with the input. This will lower the input
impedance so the noise
On May 26, 2012, at 2:16 PM, andy pugh wrote:
On 26 May 2012 21:10, Jeshua Lacock jes...@3dtopo.com wrote:
http://3DTOPO.com/CNC-enclosure.png
Don't judge me too harshly, I was making sure everything works before I
finish tiding things up! Any suggestions would be greatly appreciated!
Jeshua Lacock wrote:
On May 26, 2012, at 9:49 AM, Jon Elson wrote:
Does this position change show up on the LinuxCNC DRO display, or are
you reading
it with a mechanical indicator?
Yes, it shows up on the DRO and the machine physically moves. So I guess they
agree.
Oh, well,
On May 26, 2012, at 7:55 PM, Kirk Wallace wrote:
On Sat, 2012-05-26 at 13:45 -0600, Jeshua Lacock wrote:
... snip
Interesting. So the pull down resistor would go on the encoder ground?
No, between the encoder input terminal for each input having a problem
to the ground associated with the
Kirk Wallace wrote:
On Sat, 2012-05-26 at 13:45 -0600, Jeshua Lacock wrote:
... snip
Interesting. So the pull down resistor would go on the encoder ground?
No, between the encoder input terminal for each input having a problem
to the ground associated with the input. This will
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