Rob,
Thanks for such a detailed reply.
Why have yo got Limits Over-Ride input enabled... without a pin ref, with a hotkey
(what are you trying to do as there may be another way?)
My understanding of the limit override is that when the machine hits the limit switch (embarrassingly happens a lot at the moment!) when you press this switch it will disable teh limit switches so you can jog the machine back (is this correct?). I don't have a physical switch to do this so I have assigned the key next to the number 1 key to do this job instead.
Why have you got the CW spindle setup as Output 2.... and CCW spindle as Output 1..... but ou have defined only one spindle output?
I do not use spindle relays as I have a VFD which is controlled over serial. I believe I need the 'Disable Spindle Relays' tickbox unchecked though for my spindle to work. I don't recall changing the Output #'s for the CW and CCW.
Why have you set the acceleration at 150mm/s/sec .... and the limiting velocity at 1000mm/s/min (16.667mm/s)
Have you tried to lower the acceleration ... maybe say start at something like 50mm/s/s and then increase the machine speed up to 3000mm/min (50mm/sec)
You are running 5mm pitch ballscrews I presume? depending upon your setup voltage it can "probably" handle 50mm/sec max velocity..... but that acceleration seems a little quick to me (but I don't know your setup enough! [moving mass / weight etc of gantry]).
That is a very good question. I guess I was stupidly plugging in numbers and not really thinking about their actual meaning. Yes it's a 5mm pitch ballscrew. I'll try the numbers you suggest now
change the lookahead to 200 (2nd column from left)
un-check the watchdog checkbox (1st column from left)
I would suggest changing your job increments (given your max resolution at 200 steps / mm = 1/200 or 0.005mm/step... hence something like
10, 5, 1, 0.5, 0.1. would probably be more workable (or whatever else you choose... all your choice!)
Okay will do, could you briefly explain what these settings do?
The drivers are up to 50v but I have a 36v power supply hooked up.
After changing all those and restarting it still sounds the same. It's weird because if I hadn't noticed that the problem went away when I rotated the toolpath display, I would totally be blaming the bearings as it really sounds like they're making graunching noises but as soon as I move the toolpath it sounds perfect...
Many thanks