Rotary Delta Robot 4 axis

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18 Jul 2019 13:05 #139797 by slckzbn
Rotary Delta Robot 4 axis (xyza)

4x Servo motor (ASDA-A2-M 750W)

3x Reducer (1:25 Liming FE-90)

Software is a LinuxCNC 2.8.0-pre0

I need motion control card. Is there a card that you can recommend that meets these specifications?

And what else do I need?

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18 Jul 2019 13:17 #139799 by tommylight
Two options:
You can use the step and direction type of control as your drives most probably can use that. It is simple to wire and configure if the drives are already tuned, it works perfectly but if for any reason the motors loose position there is no feedback to know by how much it is off just the drive fault. For this type you can use the following Mesa cards:
5i25 with 7i76 for PCI slot
6i25 with 7i76 for PCI-E slot
7i92 with 7i76 for ethernet to PC
7i96 for ethernet
7i76E for ethernet
The cheapest option it 7i96, i think.

For complete controll from Linuxcnc you can use +-10V analogue controll if your drives support it. This gives full feedback and controll to Linuxcnc so even when you get position errors you know exactly what axis and by how much.
Mesa boards:
5i25 with 7i77
6i25 with 7i77
7i92M with 7i77
Personally i use the 7i77 version always with servo systems.
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19 Jul 2019 08:11 #139853 by slckzbn
Replied by slckzbn on topic Rotary Delta Robot 4 axis
Do I need anything other than a control card?

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19 Jul 2019 09:33 #139858 by tommylight
Power supply, cables, connectors, isolating tape, a lot of reading, and patience.

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25 Jul 2019 22:35 #140578 by andypugh
Replied by andypugh on topic Rotary Delta Robot 4 axis

tommylight wrote: Power supply, cables, connectors, isolating tape, a lot of reading, and patience.

And a PC
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