Can't use very low adjustment speed for THC

[jolbas]

I found there is a limitation for how slow the height adjustment speed can be. After some testing the limit seems to be at around 1kHz pulse rate. That is slowest. I can increase the amount of microsteps on the stepper driver to get a lower adjustment speed but then I sacrifice maximum speed on Z. I like to keep the adjustment speed at around 10% of feed and now it's not possible for thick material low speed cutting.

Bj rn

 

[jcoldon]

masso has a long way to go to fix there thc and add controlls to the screen this is why oem given up on the controller

 

[jolbas]

@jcoldon.

Hm. I don t find that helpful at all.

My THC actually works very well now. This is A small problem and I was looking for someone who maybe have similar issue and then maybe even a workaround.

 

[masso-support]

@jolbas are you using the F command with M667 to set your required feedrate in THC mode?

please see this: https://www.masso.com.au/masso-documentation/?section=m667-plasma-turn-thc-function-on

 

[jolbas]

Yes.

M667 F200 works as expected but M667 F100, M667 F50 or M667 F20 don't. All last three results in the same adjustment speed that is around 140 mm/min.

 

[masso-support]

what's your Z axis max feedrate and acceleration settings in F1 screen, will do some tests with the same settings.

 

[jolbas]

Z max speed is 5000 mm/min. Acceleration is 3000mm/s^2. The pulse rate at max speed is around 22kHz

 

[masso-support]

thanks @jolbas and we checked and yes it does not work on a very low feedrate. Have fixed the bug, can you please let us know your controller serial number and will email you the test software.

 

[jolbas]

Great. Thanks.

5A-1838

 

[Ross]

Hi Masso,

I will try it as well,

Thank you from Ross.

5A-2594

 

[masso-support]

thanks @jolbas and @ross, email has been sent.

 

[jolbas]

The adjustment speed is perfect now down to at least 1mm/min which is more than enough. Thanks.

 

[rcrclr]

Hello Masso

Can you please send me that fix also #5A-2730

Thanks

 

[masso-support]

thanks @jolbas and just emailed you the software @rcrclr

 

[ae_mike]

May I get that patch as well? my controller is 5A-3110 with v3.40.12pre. I'm just in the bring process now and plan to have the THC operational by the end of next week.

 

[masso-support]

@ae_mike software emailed.

 

[Ross]

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