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Author Topic: The never ending THC Saga !!  (Read 4826 times)

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Re: The never ending THC Saga !!
« Reply #10 on: October 25, 2010, 02:07:23 PM »
Quote
It depends on what your max speed in motor tuning is set to

yes.
my mistake. i forget about max speed.
thx for Correct my mistake and sorry for it.

Amir
**Even a clock that does not work is right twice a day**

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Re: The never ending THC Saga !!
« Reply #11 on: October 25, 2010, 02:43:43 PM »
he he - that's ok Amir  ;D

so what is your max speed set to? and do you use a THC300 or similar? I think it would be useful if we could share settings and experiences.

Cheers

Ian
Re: The never ending THC Saga !!
« Reply #12 on: October 25, 2010, 03:53:09 PM »
yes, i build my THC300 and use it.
i set velocity for Z axis about 100IPM.

THC would not work with the Smooth Stepper.
i think we can use modbus+SS for plasma machine


Amir
« Last Edit: October 25, 2010, 03:57:18 PM by manmeran »
**Even a clock that does not work is right twice a day**
Re: The never ending THC Saga !!
« Reply #13 on: October 25, 2010, 08:26:25 PM »
My current setup is as follows:

z-axis is  direct drive rack and pinion 848 steps per rev.

THC300

accel is set @ 100 in/s

velocity is set @ 200 ipm

THC rate is set @ +20


My setup is currently off site.  I will tune later on in the week and ill report back with my findings.    In the meantime would others like to post there z axis specifics and info!!!!

I think this will help me and other people tune, their machine.   

Surely  some of us have struggled with this in the past


Thanks
Re: The never ending THC Saga !!
« Reply #14 on: October 31, 2010, 11:49:40 AM »
With a Z velocity of 200IPM, your THC Rate needs to be much lower than 20.  My Z velocity is 30 on a lead screw and a THC Rate of 10 - 15 works best.  With your Z velocity, I would start at 10 and work back from there.  That, or slow down your Z velocity in Mach.  Why do you need 200IPM on the Z?
Re: The never ending THC Saga !!
« Reply #15 on: November 06, 2010, 11:40:56 PM »
Thanks everyone for all the help.   I successfully got my THC tuned    !!!!! ;D      My final numbers were as follows:

acel  = 75ipm
velocity = 75ipm
thc rate =  9




Thanks again to anyone who had input !!!