On 4/22/2011 5:26 PM, Robert Pabon wrote:
Man my head is starting to spin! No wonder people just go with steppers and
call it a day. Maybe my vision is clouded by ignorance but it doesn't seem
like it should be that hard to pick up a brushless DC motor, a suitable amp
and make it work.
On 4/23/2011 6:57 AM, Mark Wendt (Contractor) wrote:
On 4/22/2011 5:26 PM, Robert Pabon wrote:
Man my head is starting to spin! No wonder people just go with steppers and
call it a day. Maybe my vision is clouded by ignorance but it doesn't seem
like it should be that hard to pick
On Saturday, April 23, 2011 10:05:00 AM Dave did opine:
On 4/23/2011 6:57 AM, Mark Wendt (Contractor) wrote:
On 4/22/2011 5:26 PM, Robert Pabon wrote:
Man my head is starting to spin! No wonder people just go with
steppers and call it a day. Maybe my vision is clouded by ignorance
but it
Yeah, the 80v is the only real downer for me as well but everything else looks
good. The PWM command eliminates the need for a pwn to analog conversion card
so that is good. cost wise I am waiting on a final answer but they are cheap.
My budget is minimal and I am trying to do champagne on a
On Sat, 2011-04-23 at 06:57 -0400, Mark Wendt (Contractor) wrote:
On 4/22/2011 5:26 PM, Robert Pabon wrote:
Man my head is starting to spin! No wonder people just go with steppers and
call it a day. Maybe my vision is clouded by ignorance but it doesn't seem
like it should be that hard to
Mark, It isn't that dire, I don't think. I just think that there are a lot of
nuances and compromises. I think if you are willing to live with some
compromises it isn't that bad, but then again I am just getting started.
Here is my understanding of what I need so far:
A PC to run EMC.
I will
I am trying to do champagne on a soda budget
You are not alone. :-)
I am looking at about $70 per axis for those amps.
That is really cheap.
How much power or torque do you need?
There was a guy selling brushless drives and motors out of Canada (Vancouver?)
for a while on Ebay and his
On Saturday, April 23, 2011 11:13:32 AM Robert Pabon did opine:
Yeah, the 80v is the only real downer for me as well but everything else
looks good. The PWM command eliminates the need for a pwn to analog
conversion card so that is good. cost wise I am waiting on a final
answer but they are
Mach3 works ok for open loop if you don't modify it.
If you do..start doing macros, etc you will spend an inordinate amount
of time overcoming bugs, and undocumented features.It can be a
real time eater working around issues. And oftentimes things will pop
up out of no where and bite
you
I ran my numbers through a calculator and I needed 38 ounce inches on each
axis. That was using some pretty high numbers for my table weights and speeds
for my little smithy machine. I think I gave myself 150lbs on the table to
account for a tool turret in the future. My motors are rated for
Thanks gene, but I actually want to do the closed loop bldc/ac route for the
learning experience. I guess I always have the stepper route if I manage to
really much things up!
--- On Sat, 4/23/11, gene heskett ghesk...@wdtv.com wrote:
From: gene heskett ghesk...@wdtv.com
Subject: Re:
On 4/23/2011 11:12 AM, dave wrote:
Okay, I'm getting a bit overwhelmed here too. I'm currently using
steppers on my saw beveler, but have future thoughts of upgrading to a
servo based system. So, if what Robert shows as necessary, for one axis
I'd need a servo, an amp, a driver, a bunch of
On Fri, 2011-04-22 at 16:02 +0100, Kev James wrote:
Just got to test it. X-axis is working fine but I don't seem to be getting
any power to the y/z outputs. I have assigned amplifier enable to the three
enable pins for the three axes. I get about 1.5v across A/!A and B/!B for
the X axis, but
On 23 April 2011 16:14, Robert Pabon robertpa...@corseusa.com wrote:
If I choose an amp which requires a sinusoidal signal, I am not sure what to
do since I haven't shopped for an available
The only amp I know of which requires a sinusoidal input (or three
PWMs) is the Mesa 7i39.
However,
I'm not sure I follow.
What I was referring to was something like this amp:
http://www.a-m-c.com/download/datasheet/sx25a20.pdf
Which requires two sine waves with a 120 degree phase shift. The phase angle
corresponds to motor angle and the amplitude corresponds to torque. My
understanding of
On Sat, 2011-04-23 at 07:49 -0700, Robert Pabon wrote:
Yeah, the 80v is the only real downer for me as well but everything
else looks good. The PWM command eliminates the need for a pwn to
analog conversion card so that is good. cost wise I am waiting on a
final answer but they are cheap. My
On 4/23/2011 2:52 PM, Kirk Wallace wrote:
On Sat, 2011-04-23 at 07:49 -0700, Robert Pabon wrote:
Yeah, the 80v is the only real downer for me as well but everything
else looks good. The PWM command eliminates the need for a pwn to
analog conversion card so that is good. cost wise I am
On 4/22/2011 5:26 PM, Robert Pabon wrote:
Servo dynamics recommends the 1224-BLS driver for this motor. The 1224BL is
the comparable amp:
http://www.servodynamics.com/Specs/1224bl_spec.pdf
Servo dynamics says I am fine driving with either sinusoidal or trapezoidal.
Ah, well then
CMOS battery died on my EMC pc and I lost my bios settings.
IIRC, I want the parallel port on EPP?
and all power saving off...
is there anything else I'm forgetting in a typical setup?
thanks!
fg
--
Fulfilling the
I already have the BLDC servos so I am headed down that path already ;)
--- On Sat, 4/23/11, Dave e...@dc9.tzo.com wrote:
From: Dave e...@dc9.tzo.com
Subject: Re: [Emc-users] Motion control cards
To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net
Date: Saturday, April 23,
On Sat, 2011-04-23 at 15:15 -0500, forget color wrote:
CMOS battery died on my EMC pc and I lost my bios settings.
IIRC, I want the parallel port on EPP?
... snip
You only need EPP if you want to run an EPP type device on the port,
such as an FPGA hardware signal generator-I/O board. Just
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