Gentlemen,
When a control requests a speed from a motor it will send a signal to the
drive ex 500 rpm.
The drive wants to put out 500 rpm of current to the motor but it cannot
because the motor is not turning. The drive knows this because the tach
feedback is zero (the motor is not turning).
@lists.sourceforge.net
Subject: Re: [Emc-users] tach feedback
Gentlemen,
When a control requests a speed from a motor it will send a signal to the
drive ex 500 rpm.
The drive wants to put out 500 rpm of current to the motor but it cannot
because the motor is not turning. The drive knows this because
On Thu, 2013-03-28 at 07:05 -0500, Stuart Stevenson wrote:
Gentlemen,
snip
Everyone says the drive/motor servo tuning is the best but if that is
the case why is there tuning capability in LinuxCNC? Obviously, it is
not good enough or no effort would be expended in making it better.
I will
Gentlemen,
The ultimate goal is simplification. When I am tuning a servo system I am
not tuning the motor as much as I am tuning the already tuned servo/motor
system. This piles tuning upon tuning and seems more complicated than it
needs to be.
I am trying to dumb down the drive so the
Stuart Stevenson wrote:
I ask this because I want to remove the drive tuning from the system.
Everyone says the drive/motor servo tuning is the best but if that is the
case why is there tuning capability in LinuxCNC? Obviously, it is not good
enough or no effort would be expended in making it
Jon,
Will your amps handle the motors on my Cinci?
thanks
Stuart
On Thu, Mar 28, 2013 at 11:10 AM, Jon Elson el...@pico-systems.com wrote:
Stuart Stevenson wrote:
I ask this because I want to remove the drive tuning from the system.
Everyone says the drive/motor servo tuning is the best
On Thu, Mar 28, 2013 at 10:51:12AM -0500, Stuart Stevenson wrote:
I am trying to dumb down the drive so the LinuxCNC tuning is directly
effecting the motor motion instead of manipulating the tuned servo system.
My VMC uses velocity mode amps with tachs, and I had one tach that
would
Heh, I have been getting practice with the soldering iron removing parts
BUT that is on a board with no intention of it ever working again. I am
just harvesting plugs to use.
I would be very afraid to try this on a board with any life left. :)
On Thu, Mar 28, 2013 at 11:19 AM, Chris Radek
Stuart Stevenson wrote:
Jon,
Will your amps handle the motors on my Cinci
I may get your machines confused, but I think the Cinci has Gettys motors
and amps. The motors are 8 pole DC brush, and very low voltage and very
high current. My understanding of the Gettys history is they used huge
On Thu, Mar 28, 2013 at 11:19 AM, Chris Radek ch...@timeguy.com wrote:
My VMC uses velocity mode amps with tachs, and I had one tach that
would sometimes give a bumpy output that would cause a banging
once per screw revolution.
Maxon and Escap motors are made with exactly the
Gentlemen,
If I am wanting to remove the servo tuning from a velocity loop would I
be able to jumper the +/- 10 volts to the tach feedback into the drive and
to the speed request into the drive.
Would this cause the drive to not respond?
Would this cause the drive the immediately output the full
On 03/27/2013 10:43 PM, Stuart Stevenson wrote:
Gentlemen,
If I am wanting to remove the servo tuning from a velocity loop would I
be able to jumper the +/- 10 volts to the tach feedback into the drive and
to the speed request into the drive.
Would this cause the drive to not respond?
On Wed, 2013-03-27 at 22:43 -0500, Stuart Stevenson wrote:
Gentlemen,
If I am wanting to remove the servo tuning from a velocity loop would I
be able to jumper the +/- 10 volts to the tach feedback into the drive and
to the speed request into the drive.
Would this cause the drive to not
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