Best Mesa Cards/ Combo for DELTA ASD-A2 drive/motor

Bandar
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27 Jun 2020 16:28 - 27 Jun 2020 16:32 #172864 by Bandar

Best Mesa Cards/ Combo for DELTA ASD-A2 drive/motor was created by Bandar

Hi everone in the forum,

I'm new to Linuxcnc and this is my first post in the forum. I'm in the process of buying DELTA ASD-A2 servo drive and motors. I have been searching around for the best MESA card for my DELTA drives and I have found that many people use the 7i77 with the 5i25 or the 6i25. For that reason, I was hoping if you could share your wiring diagram just to understand what I need to do before hand

And if anyone want to suggest a different Mesa cards /combo, I would be more than happy to hear it.

I'm building 4x8 cnc router and I want to add grating scale (Linear encoder scale) later when the build is about to finish. I will definitely share my build and wiring later on.

I hope no one has posted something like this before. If someone did post, sorry for the redundancy.

Regards,

Bandar

Last edit: 27 Jun 2020 16:32 by Bandar. Reason: misspelling

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tommylight
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27 Jun 2020 16:58 #172875 by tommylight

Replied by tommylight on topic Best Mesa Cards/ Combo for DELTA ASD-A2 drive/motor

There is also the Mesa 7i97 that does not need a 5i25 or 6i25 as it has ethernet connectivity. So everything is in one package.
forum.linuxcnc.org/10-advanced-configura...ning-detailed-how-to
Have a read there, plenty of info on how to properly wire and test a 7i77

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Bandar
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27 Jun 2020 21:23 - 27 Jun 2020 21:28 #172917 by Bandar

Replied by Bandar on topic Best Mesa Cards/ Combo for DELTA ASD-A2 drive/motor

Hi tommy,

Thanks for your reply. Yes, I have checked your post. It's very nice. I still don't know what all these Hall and ini files do, and what is tuning but I kind of understand tuning

. Furthermore, I searched the post for any wiring diagrams and couldn't find any except for your original post on how encoder should be connected and how to connect the analog output. Is there an actual wiring diagram that can be followed?

However, I've checked both the 7i77 and 7i97, the 7i77 has more I/Os than the 7i97. Is that a good thing? Because I will be using an ATC spindle with tool changer and I will add touch plate with a probe, plus the limit switches. So, is the 7i97 enough for that?

If the decision was up to you, what would you chose for this build? I'm asking this question to you because obviously you have more knowledge in Linuxcnc than me.

Regards,

Last edit: 27 Jun 2020 21:28 by Bandar. Reason: misspelling

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tommylight
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28 Jun 2020 10:19 #172965 by tommylight

Replied by tommylight on topic Best Mesa Cards/ Combo for DELTA ASD-A2 drive/motor

Wiring diagrams are not very helpful for these types of things as there is no way of knowing what hardware you or any other user is going to use, but that is easy to do if you can find the specs for the encoders and drives. It is doable even without specs and schematics but takes longer and there is the risk of messing up something.
Find us the wiring for the encoders and drives, then we can make drawings easily.
7i77 and 7i97 should be the same thing in regards of IO pins and axis they can control, but i have no 7i97 so i might be mistaken. I do have 2 of 7i77, one waiting to be installed on a Mazak retrofit and the other for testing, and i have installed several of them on industrial machines. They never fail!
If i was to do a retrofit now, i would go for the 7i97 for sure, although there is no difference from the 7i92M/7i77 combo that i usually use as the 7i92M plugs directly to a 7i77.
Basically these two are the same thing.

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Bandar
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28 Jun 2020 13:32 - 28 Jun 2020 13:33 #172988 by Bandar

Replied by Bandar on topic Best Mesa Cards/ Combo for DELTA ASD-A2 drive/motor

Thanks Tommy for the reply. So, you are using the 7i92M in order to avoid using the 5i25 or 6i25 PCI board. This way you don't have to use a PC, you just use a laptop with linuxcnc software in it. (I like this idea).

I like to buy a new version of Mesa cards, but as you said 7i97 is relatively new and I will not find many help or builds around.

So, if I bought the 7i97, do I need to (later) buy 7i85s? I want to create a closed loop system by using linear encoders from HEIDENHAIN.

Regards,

Last edit: 28 Jun 2020 13:33 by Bandar.

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Aciera
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28 Jun 2020 13:43 - 28 Jun 2020 13:48 #172989 by Aciera

Replied by Aciera on topic Best Mesa Cards/ Combo for DELTA ASD-A2 drive/motor

The 7i97 has six encoder inputs so closed loop is not a problem but as you already noticed it comes with only with 16 inputs and 6 outputs but there is also an expansion connector for daughter cards so you could add more I/O if needed.
How many I/O you need is something you will have to figure out. I use the 7i76e that has 32 inputs/16 outputs and I usually fill those up pretty good. But I also like to have machine panels with push buttons rather than just using the GUI.

[edit]
I'm not suggesting you use the 7i76e. That does not do analog drives.

Last edit: 28 Jun 2020 13:48 by Aciera.

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tommylight
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28 Jun 2020 15:34 #172999 by tommylight

Replied by tommylight on topic Best Mesa Cards/ Combo for DELTA ASD-A2 drive/motor

Bandar wrote:
Thanks Tommy for the reply. So, you are using the 7i92M in order to avoid using the 5i25 or 6i25 PCI board. This way you don't have to use a PC, you just use a laptop with linuxcnc software in it. (I like this idea).

I am not avoiding those at all, currently i have 1x 5i25 and 2x 6i25, but i tend to use them for retrofits of industrial machines and put the PC with everything else in the cabinet.
I was not aware of such differences between 7i77 and 7i97, thank you Aciera.
In that case a single 7i84 would get you 32 inputs and 16 outputs, and wiring it to the 7i97 is very easy as explained in the user manual (page 10 for 7i77)

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0x2102
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28 Jun 2020 22:15 - 29 Jun 2020 16:34 #173041 by 0x2102

Replied by 0x2102 on topic Best Mesa Cards/ Combo for DELTA ASD-A2 drive/motor

I personally wouldn't use a 7i77 or 7i97 (analog -10V to 10V) for the Delta A2 servo drive. Those modern servo drives support step/dir input (in addition to analog).

A 7i76e + 7i85 or a 7i95 + a SmartSerial Card for extra inputs / outputs is probably a better choice. That way you could start using them in open-loop and later on add linear scales for full closed-loop system.

An analog card like the 7i77 or 7i97 requires linear scales right from the start.

Edit Post:
Forgot that the servo drive has an encoder, so no need for linear scales - just encoder feedback.

Last edit: 29 Jun 2020 16:34 by 0x2102.

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Bandar
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29 Jun 2020 01:06 #173049 by Bandar

Replied by Bandar on topic Best Mesa Cards/ Combo for DELTA ASD-A2 drive/motor

There are many Mesa cards and it's not quite easy to figure which one is the one

but I get that each board can work with any machine, I just need to figure out what I actually need.

0x2102 Can you confirm this? Or anyone...
0x2102 An analog card like the 7i77 or 7i97 requires linear scales right from the start.

If the 7i77/or 7i97 require a linear scale from the start, that is not good. Because I want to add these linear scale later when I see movement and actually cut some aluminium.

Regards

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tommylight
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29 Jun 2020 05:54 #173053 by tommylight

Replied by tommylight on topic Best Mesa Cards/ Combo for DELTA ASD-A2 drive/motor

0x2102 wrote:
An analog card like the 7i77 or 7i97 requires linear scales right from the start.

That is correct, none of those work without encoder feedback.

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