Machine Operation and axis test

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16 Jan 2015 00:35 #55036 by jjharley
When operating on axis test (velocity and acceleration tuning) the machine runs very quiet and smooth,
but when running the "Linux CNC' logo in gcode you get a lot more noise.

Could it be an effect of the 'decay' setting (slow), or is it a factor of the gcode itself.

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16 Jan 2015 02:58 #55039 by andypugh

Could it be an effect of the 'decay' setting (slow), or is it a factor of the gcode itself.


I would imagine that if _everything_ else is the same then it must be the slightly different motion from the G-code. The LinuxCNC logo has a fair bit of starting and stopping.

However, it _might_ be because your power supply is marginal when it comes to trying to move more than one axis..
The following user(s) said Thank You: jjharley

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16 Jan 2015 04:32 #55044 by jjharley
Thanks
24.4 V but have noticed that it will drop to 24.3V, keep a digital voltage meter attached and on when cutting.
(this is only a 24V max power supply but they tend to have a little 'play'.)
two 2.5A and one 2.8A NEMA 23's all of them set to 1.6A
driver board is TB6560AHQ chips

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