RE: individual velocities

[Tim Goldstein <tgoldstein-at-mlh-services.com>]

I have a similar situation. X & Y good for 60 + ipm, but Z maxes out around
24 ipm (30% greater steps per inch and a drive mechanism with a LOT more
drag). The problem with setting MAX_VELOCITY to 60 is any G0 move on the Z
axis will be implemented as a move at 60 ipm.

Matt had mentioned that you are suppose to be able to throttle back an axis
now (as of the Jan-2000 build) by putting a parameter in the individual axis
entries under MIN_OUTPUT and MAX_OUTPUT. I have tried this on my Z axis, but
it just seems to cause me follow errors that I can't get around.

Tim
[Denver, CO]

> -----Original Message-----
> From: Jon Elson [jmelson-at-artsci.wustl.edu]
> Sent: Tuesday, February 08, 2000 10:26 PM
> To: Multiple recipients of list
> Subject: Re: individual velocities
> 
> 
> 
> 
> Clint Bach wrote:
> 
> > What do you think the possibilities of getting individual ramp,
> > acceleration, and maximum speed for each axis added to the 
> EMC are? On
> > my current machine Z will do about 10 IPM but X and Y can 
> do 90 IPM with
> > the AHHA controller.  It just breaks my heart to waste 80 IPM,
> > especially when the Z axis isn't even moving!!!
> 
> Why don't you set the max velocity to 90 IPM, but remember to not ask
> for Z moves greater than 10 IPM?  You can easily do this in 
> all programs,
> and just turn the jog rate down before jogging Z.
> 
> Of course, another fix might be to improve the drive on your Z axis.
> 
> Jon
> 
>