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LinuxCNC
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General LinuxCNC Questions
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7i76ED+7i77 for analog signal
7i76ED+7i77 for analog signal
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07 Mar 2021 19:46 #201342
by PCW
Yes, the fallback configuration is only used if the normal user configuration fails to load
Doesn't look like the analog out is connected to the drive at all
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Hamel2020
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07 Mar 2021 20:23 - 07 Mar 2021 20:23 #201352
by PCW
7I77 AOUT --> DRIVE AIN+
7I77 AGND --> DRIVE AIN-
7I77 ENA+ and 7I77 ENA- are the two terminals of a switch
that should enable the drive when "on"
Last edit: 07 Mar 2021 20:23 by PCW.
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07 Mar 2021 22:42 #201379
by Hamel2020
As I understand , the connection could be like this ?
correct me if I'm wrong please
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08 Mar 2021 01:50 #201385
by PCW
That look basically right except you have ENA- and ENA+ swapped
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08 Mar 2021 02:39 #201387
by Hamel2020
I noticed that ... really thanks ...
I will check the wiring , and see the issue for the encoder feedback error , maybe have some wiring issues ...
Thanks a lot ...
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08 Mar 2021 02:50 #201388
by PCW
Note that you have a 50% chance of having the feedback reversed
so you get an instant runaway
If the encoder direction and scale are correct
you fix reversed feedback by changing the sign
of the analog output (the scalemax parameter)
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LinuxCNC
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General LinuxCNC Questions
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7i76ED+7i77 for analog signal
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