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Hardware & Machines
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Driver Boards
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Mesa 5i25 & 7i77 bios
Mesa 5i25 & 7i77 bios
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17 Feb 2020 13:04 #157598
by barisduzenli
Hello tommy,
Your pid tutorial was perfect until we tried to achieve rotary delta kinematics with encoder scale. Could you suggest an article about scaling like yours "Servo Tuning detailed How To". I thought you may write about scaling but I could not find. Or you may give some tips. Even I could not find encoder pulse countings to check how many pulse equals to one turn.
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17 Feb 2020 14:20 #157614
by tommylight
Detatch the motor from the machine, no need to do that for spindle:
Start Linuxcnc
In the machine menu click on calibration
Set the encoder scale for the axis you are testing to what you think it should be, like 2000,
Go to MDI after you home all axis and type:
G0 X 2000 ( or Y or Z )
That should do 1 turn lf the motor, if it does not, repeat with other values while noting how much the motor actually moves.
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19 Feb 2020 10:15 #157826
by barisduzenli
Hello tommy,
When I set encoder scale 100, G0 X 100 command turns 1 turn. Thank you. This was my first meaningful movement in LinuxCNC. But isnt it so small for a servo. I find a full closed loop resolution parameter in ASDA-A2 manual. It is P1-72 and 5000 as default. I expected 5000 as encoder scale.
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19 Feb 2020 12:05 #157846
by tommylight
Nasilinsen abey ?
Can you please attach the hal and ini files here.
If the encoders are 5000 ppr, the setting in the ini file should be 20000 due to quadrature nature of the signal.
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19 Feb 2020 12:22 - 19 Feb 2020 12:24 #157850
by barisduzenli
İyi değilim abey?
I am trying to understand about scaling last 7 days.
I changed encoder scale to 20000. Servos jumped when I power on on the LinuxCNC
And you are not turkish arent you?
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19 Feb 2020 12:28 - 19 Feb 2020 12:28 #157852
by tommylight
barisduzenli wrote: And you are not turkish arent you?
No, i am a Kosovar Albanian. I was in Istanbul some 25 years ago and i learned about 15 words in Turkish.
Will have a look later....
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19 Feb 2020 12:42 - 19 Feb 2020 12:44 #157853
by barisduzenli
25 years before is perfect time to be in Istanbul
Okey thank you tommy. And I add my test setup. It is just servos, drivers, 5i25 and 7i77.
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06 Feb 2021 19:23 #197867
by ashour33
hi
i would liek your help with same control
i have same drive and need your wiring steps
i am almost lost with it could you help me
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09 Feb 2021 18:00 #198172
by ashour33
ashour33 wrote: hi
i would liek your help with same control
i have same drive and need your wiring steps
i am almost lost with it could you help me
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Hardware & Machines
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Driver Boards
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Mesa 5i25 & 7i77 bios
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