Guest
Show Posts
1
SmoothStepper USB / Help with SS and Servo drives please :(
« on: April 22, 2010, 07:34:31 PM »
I have everything setup up and my friend has made me a g-code test file, but for some odd reason it keeps losing track of where it thinks the spindle is and loses its true soft limits. the smoothstepper is driving a cnc4pc's C10 BOB and thats connected to me servo drives.
When i ran the file that my friend did for me, i zeroed in my tool to my work piece then set the program off. initially the first line of code told the tool to do +10.000 then go down to a depth of -2.000. mach thinks its done this but in reality its only moved about -5mm from the original +10.000. if you leave it to run, it moves again to -4.000 as if it were doing a second pass but then goes all loopy and plows my tool through the table more or less.
On a second run of the same file it did not try to kill my table but to kill my X axis. as i have two motors moving X (A setup as a slave to X). For some bizarre reason tried moving A in the opposite direction of X.
One last thing is when i move the Z up and down then run abit of code, then stop and try to manually jog the Z in the + direction, there is no movement but mack thinks there is. the Z - works fine. I have to restart mach 3 and it works again.
My Servo drives do give of a large amount of interference when i enable them to "run", i have yet to successfully get my limit switches working because of this.
Altering de-bounce does not effect anything in anyway.
At the moment i have the SS board by my PC and the BOB is located in the cabinet with the Servo Drives and spindle inverter. setup is like this ... PC --- usb cable --- SS ---- parallel cable --- C10 BOB --- screened cable --- Servo Drives
Heres a pic of my servo drive and bob.
hope someone can help
Cheers
When i ran the file that my friend did for me, i zeroed in my tool to my work piece then set the program off. initially the first line of code told the tool to do +10.000 then go down to a depth of -2.000. mach thinks its done this but in reality its only moved about -5mm from the original +10.000. if you leave it to run, it moves again to -4.000 as if it were doing a second pass but then goes all loopy and plows my tool through the table more or less.
On a second run of the same file it did not try to kill my table but to kill my X axis. as i have two motors moving X (A setup as a slave to X). For some bizarre reason tried moving A in the opposite direction of X.
One last thing is when i move the Z up and down then run abit of code, then stop and try to manually jog the Z in the + direction, there is no movement but mack thinks there is. the Z - works fine. I have to restart mach 3 and it works again.
My Servo drives do give of a large amount of interference when i enable them to "run", i have yet to successfully get my limit switches working because of this.
Altering de-bounce does not effect anything in anyway.
At the moment i have the SS board by my PC and the BOB is located in the cabinet with the Servo Drives and spindle inverter. setup is like this ... PC --- usb cable --- SS ---- parallel cable --- C10 BOB --- screened cable --- Servo Drives
Heres a pic of my servo drive and bob.
hope someone can help
Cheers
