On Tue, Aug 10, 2010 at 07:53:48PM -0700, Neil Baylis wrote:
Chris,
would you care to hazard a guess at how much phase shift you see from the
7i48 input to the velocity input at the servo amp?
I tried to measure the delay in this setup. I scoped the real
tachometer (which is now hooked to
On Tue, 2010-08-10 at 22:19 -0500, Chris Radek wrote:
On Tue, Aug 10, 2010 at 07:53:48PM -0700, Neil Baylis wrote:
would you care to hazard a guess at how much phase shift you see from the
7i48 input to the velocity input at the servo amp?
There's at least a millisecond delay between the
On Wed, Aug 11, 2010 at 07:47:21AM -0700, dave wrote:
Hi Chris,
Indeed that is exciting. Far better results than I would have expected.
I wonder if decreasing the servo cycle would decrease the following
error? Not that 0.0005 on acceleration is bad. That is about 13 counts
at the motor
Hi all,
I have a VMC with low inertia servos and 25 amp 270 volt velocity mode
servo amps. It has tachometers and 1/25400 inch (micron) resolution
rotary encoders on the motors.
I have been struggling with a bad tachometer on Y for a while now - it
would come and go - and when people started
Chris,
would you care to hazard a guess at how much phase shift you see from the
7i48 input to the velocity input at the servo amp?
Neil
On Tue, Aug 10, 2010 at 7:19 PM, Chris Radek ch...@timeguy.com wrote:
Hi all,
I have a VMC with low inertia servos and 25 amp 270 volt velocity mode
On Tue, Aug 10, 2010 at 07:53:48PM -0700, Neil Baylis wrote:
would you care to hazard a guess at how much phase shift you see from the
7i48 input to the velocity input at the servo amp?
There's at least a millisecond delay between the motion and the amp
seeing the corresponding tach signal,
