Help needed to get my 7i76E + 7i85S + 7i73 on my mill going.

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8 years 10 months ago #103600 by PCW
All PID tuning parameters are pins so can be connected to signals and updated dynamically

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8 years 10 months ago #103601 by rodw

PCW wrote: All PID tuning parameters are pins so can be connected to signals and updated dynamically


Peter, thats not what the 2.7 docs say
linuxcnc.org/docs/2.7/html/hal/rtcomps.html#_pid
"The PID gains, limits, and other tunable features of the loop are implemented as parameters."

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8 years 10 months ago - 8 years 10 months ago #103603 by PCW
Take a look at the PID manpage, the html documentation is out of date.
Last edit: 8 years 10 months ago by PCW.

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8 years 10 months ago #103611 by rodw

PCW wrote: Take a look at the PID manpage, the html documentation is out of date.


In that case Bengt needs to change
Code:
setp pid.s.FF0 [SPINDLE_9]FF0
to
Code:
setp gearbox2.maxrpm 2500 net gbox-ratio <= gearbox2.speedratio net gbox-ratio => pid.s.FF0

where 2500 is the correct top speed for his device

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8 years 2 months ago #115597 by tecno
Time flies and a lot of water has flown under the bridges :)

I have been looking at this to simplify S commanded speed to settings needed. VFD to control min to max in each gear setting
This VFD range is 40% of max and as I see it will not affect the torque very much so this is the way to get this mill going.

So in short it should be like this.

GearShift Hi
Gear A 1501 to 2500 rpm
Gear B 1251 to 1500 rpm

GearShift Lo
Gear A 751 to 1250
Gear B 451 to 750
Gear C 271 to 450
Gear D 161 to 270
Gear E 80 to 160


To be honest I have not tried the comp files due to my health reasons etc.. but would like to get back on the horse again and get this rpm control to work.

Is the comp still valid or any other solution?

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8 years 2 months ago #115793 by tecno
Can anybody give me a hint on what to do next?

I think that above new *table* of gear handling may need changes in gearcomp2 ?

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