Machsupport Forum
Mach Discussion => General Mach Discussion => Topic started by: Myk3 on June 18, 2018, 01:47:20 PM
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I am fairly new to the build your own controller field.. I am converting a ISEL 3020 to Mach3 and I have the X and Y running but am unsure on how to calculate the microstepping and the section for motor tuning (Steps per, velocity, Acceleration, and Pulse). Is there a formula to use to calculate these?
The ISEL 3020 has these (https://en.nanotec.com/fileadmin/files/Datenblaetter/Archiv_Datenbl%C3%A4tter/Schrittmotoren/st5818m3008.pdf) motors installed.
I installed these (https://www.amazon.com/STEPPERONLINE-Digital-Stepper-1-0-4-2A-20-50VDC/dp/B06Y5VPSFN) drivers and this (https://www.amazon.com/SainSmart-Breakout-Board-Stepper-Driver/dp/B0093Y897A/ref=sr_1_4?s=hi&ie=UTF8&qid=1529333874&sr=1-4&keywords=cnc+breakout+board) BoB.
video of the thing moving (https://youtu.be/iSry6ZRe8bI)
(https://preview.ibb.co/e3grcy/35643413_1952852038358724_8100752673277476864_n.jpg) (https://ibb.co/cV5HHy)
Thanks for any advice..
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Further research I found these on the documentation..
(https://preview.ibb.co/jQnd7y/IMG_20180618_134844.jpg) (https://ibb.co/nrOwud)
(https://preview.ibb.co/e5Ly7y/IMG_20180618_134839.jpg) (https://ibb.co/dSk9Ed)
(https://preview.ibb.co/cxU87y/IMG_20180618_133604.jpg) (https://ibb.co/fAOCZd)
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With microstepping it is usual to select 1/8 if your machine parts and workings are going to be in Imperial units and 1/10 if it is going to be in Metric units.
Here is a calculator which will help you calculate the Steps per Unit for each axis; http://www.machsupport.com/forum/index.php?action=dlattach;topic=16315.0;attach=23771
Velocity and acceleration are a ‘trial and error’ thing…
Increase Velocity in steps until an axis regularly stalls (squealing noise) then reduce it by 30% saving the changes as you go. Acceleration is set in a similar manner. Then they are both finely adjusted for optimum performance.
Tweakie.
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Ahh! thanks a bunch!