Problem with 7i92+7i78

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19 Jan 2023 19:25 - 19 Jan 2023 19:38 #262429 by COFHAL
I have my lathe running with a 7i92 card plus a 7i78. Initially I used it because the spindle motor was a BLDC and the speed was controlled with 5 volts. Now replace that motor with a servo motor. Initially I did the tests of the servo motor using one of the user files size 83 to control the servo in speed and orientation, for that I used the 7i96 and 7i96s cards and without problem I was able to control the servo. The only changes I made to the original Talla83 file was to change the name of the card in the HAL file and use another pin to enable the servo motor. Once this is done I installed the servo motor in my lathe and tried to control it using the 7i92 7i78 card but the servo motor does not respond to any command and the only change I made to the original file that worked for me was to replace 7i92 or 7i96s with 7i92 , I'm really lost and I can't find a logical reason for this to happen.
Attach the HAL and ini files.
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Last edit: 19 Jan 2023 19:38 by COFHAL.

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19 Jan 2023 21:30 #262435 by PCW
Replied by PCW on topic Problem with 7i92+7i78
Are you sure you have 7I78 firmware in the 7I92?

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20 Jan 2023 12:47 #262480 by JT
Replied by JT on topic Problem with 7i92+7i78
You can use my Mesa Configuration Tool to flash the correct firmware on the 7i92.

gnipsel.com/linuxcnc/mesact/index.html

JT

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20 Jan 2023 13:55 - 20 Jan 2023 13:58 #262492 by COFHAL
Replied by COFHAL on topic Problem with 7i92+7i78
Yes, I use the 7i92_7i78x2d firmware, additionally with the 7i73 card and everything works correctly for me, the only thing is that it is not possible to control an AC servimotor.
 
Last edit: 20 Jan 2023 13:58 by COFHAL.

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20 Jan 2023 15:49 - 20 Jan 2023 15:59 #262500 by PCW
Replied by PCW on topic Problem with 7i92+7i78
What drives the pin spindle-pwm-switch.out?

net pwm-switch-out spindle-pwm-switch.out => hm2_7i92.0.stepgen.02.velocity-cmd

EDIT: OK I see its driven by a mux for orient/normal_spindle changeover

Can you verify that hm2_7i92.0.stepgen.02.velocity-cmd is at the expected value when
you command normal spindle rotation?
Last edit: 20 Jan 2023 15:59 by PCW.

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20 Jan 2023 16:09 #262502 by COFHAL
Replied by COFHAL on topic Problem with 7i92+7i78
Thanks for your support, I reconfigured it and it worked, I really don't know what was happening, possibly a bad contact of one of the outputs.

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