Hello Guest it is July 08, 2020, 12:45:42 AM

Author Topic: Anybody help me?  (Read 437 times)

0 Members and 1 Guest are viewing this topic.

Anybody help me?
« on: August 30, 2018, 12:29:51 AM »
Hi all,

Last year I did a complete rebuild of my control box for my wood router. I was wondering what`s the best way to
test for servo faults. My new system has a 70 volt power supply that runs with Geckos and 600 oz-in servo motors.
The machine seems more reliable and is faster. But I`d like to test it to see what the maximum ipm would be.
Not certain what the best type of g-code would be to check the machine.

Thanks!
Re: Anybody help me?
« Reply #1 on: August 30, 2018, 12:57:28 AM »
Hi,
more important than speed is acceleration.

If you had some Gcode that makes an axis go backwards and forwards at maximum acceleration.
Then up the acceleration in Machs motor tuning and do it again. Keep upping the acceleration until
you get an overcurrent fault from the Gecko. Back off the max acceleration by about 25%.

Is your machine in inches or metric? How long are the axes?

If in inches I'd try something like:
G0 X4
X0
X4
X0
X4
X0
X4
X0
X4
X0

Which will make the X axis go backwards and forwards by 4 inches as fast as it can, up to the max velocity
you have set. What you are hoping is that the axis is still accelerating by the time it has to start slowing down
again, ie it never gets to Vmax but is in a reversing but maximum continous acceleration phase.


Craig
My wife left with my best friend...
     and I miss him!