Which combination of mesa cards should I use?
- rainbowkoala49
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24 Feb 2025 06:31 - 24 Feb 2025 06:42 #322459
by rainbowkoala49
Which combination of mesa cards should I use? was created by rainbowkoala49
I have an existing SBZ 130 i want to retrofit by keeping the original motors+drives, the motors all (3 axis and spindle) are AC 3PH servos with integrated 2 pole resolvers (6 wires - sin, cos, excitation pairs) for their feedback, aside from that I have about 42 inputs and 36 outputs as per the machines original schematics, but I might not use every single one. Moreover, I also want to add a separate rotary milling head for chamfers at different angles later down the line, so how would I go about adding/changing the combination of mesa cards.
The same machine I've seen a successful retrofit using combination of 6i25 7i77 7i70 7i71 7i74, but that system all the motors had absolute encoders
Mine is slightly different model (1998, mine is 2001) and I was recommended from a different person to go with 6i24 (do i need 6i24-16 or 25 and whats the difference??), 7i49 for the resolvers and controlling the drives with 10v analog, but would this work? I'm a complete beginner to this field so I'd like to know before purchasing any hardware. Moreover, do I need the other cards as well? (7i70 7i71 7i74) I understand the first two are for extra I/O digitals but im not sure what the 7i74 does, if someone can explain I would greatly appreciate it.
Edit : I just found out that the 6i24 has about 70 I/O pins, I think that covers my need so I dont need the extra 7i70 and 7i71 right?
The same machine I've seen a successful retrofit using combination of 6i25 7i77 7i70 7i71 7i74, but that system all the motors had absolute encoders
Mine is slightly different model (1998, mine is 2001) and I was recommended from a different person to go with 6i24 (do i need 6i24-16 or 25 and whats the difference??), 7i49 for the resolvers and controlling the drives with 10v analog, but would this work? I'm a complete beginner to this field so I'd like to know before purchasing any hardware. Moreover, do I need the other cards as well? (7i70 7i71 7i74) I understand the first two are for extra I/O digitals but im not sure what the 7i74 does, if someone can explain I would greatly appreciate it.
Edit : I just found out that the 6i24 has about 70 I/O pins, I think that covers my need so I dont need the extra 7i70 and 7i71 right?
Last edit: 24 Feb 2025 06:42 by rainbowkoala49.
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- PCW
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24 Feb 2025 16:04 #322500
by PCW
Replied by PCW on topic Which combination of mesa cards should I use?
If the resolvers connect to the drives (expected with AC servos) ,
a 7I49 is not needed (or useful)
a 7I49 is not needed (or useful)
The following user(s) said Thank You: azim4411, rainbowkoala49
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- rainbowkoala49
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25 Feb 2025 04:09 #322556
by rainbowkoala49
Replied by rainbowkoala49 on topic Which combination of mesa cards should I use?
I see, so 7i49 is meant for standalone resolvers yes?
also in that case could you let me know what combination I can try?
my teammate on this project has requested the same information on another thread, along with some other documents and images that might help
forum.linuxcnc.org/30-cnc-machines/31792...1-retrofit?start=150
we're both interns working on this project with no experience, completely fresh to the field, so help would be greatly appreciated.
Thanks!
also in that case could you let me know what combination I can try?
my teammate on this project has requested the same information on another thread, along with some other documents and images that might help
forum.linuxcnc.org/30-cnc-machines/31792...1-retrofit?start=150
we're both interns working on this project with no experience, completely fresh to the field, so help would be greatly appreciated.
Thanks!
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