Retrofit, kira miyano KV-3MC

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13 Sep 2021 17:14 - 13 Sep 2021 17:15 #220468 by kt600v
This machine has been broken for 4 years, it has a problem  with the x,y servo amplifier that could not be repaired, also some parameters where lost, and never could get the original one plus I could not find  any electrical squematic or manual available.
Me and the owner decided to retrofit control with linux cnc and use new servo drives.

I'm thinking of using 5i25 AND 7i77.
I'll probably need advice, suggestions from you guys.

  Hello you all.
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Last edit: 13 Sep 2021 17:15 by kt600v.

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13 Sep 2021 17:23 #220473 by tommylight
Welcome,
Start here, it has also info on wiring and testing procedures for Mesa 7i77.
forum.linuxcnc.org/10-advanced-configura...ning-detailed-how-to
The following user(s) said Thank You: kt600v

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13 Sep 2021 18:14 #220481 by kt600v
Replied by kt600v on topic Retrofit, kira miyano KV-3MC
I've been looking for some servo drives models to replace the original ones.
Original one is a fanuc dual axis model  a06b-6050-h203 
it's power stage works at 185Vac 3p input ,  the motors are fanuc model 5. wich are rated at 110V (see picture).

I've found the Mitsubishi General-Purpose AC Servo MR-JR-A have similar electrical and torque specs, however I'm still worried about the voltaje input wich is 200V on the mitsubishi.

any sugestion or advice about this would be very welcome.

 
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13 Sep 2021 19:21 #220488 by Henk
Replied by Henk on topic Retrofit, kira miyano KV-3MC
Hi. Mesa 8i20 drives should be a good fit for those motors, however, it is probably a good idea to change the encoders. Not sure If those pulse coders can be interfaced with linuxcnc.

To set up the 8i20 properly takes is a bit more challenging though.

The cost of Chinese servo drives and motors aren't that high and I've had good results with them. That is probably the easiest solution.

Henk

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13 Sep 2021 20:16 #220498 by kt600v
Replied by kt600v on topic Retrofit, kira miyano KV-3MC
8i20 is new for me I'll take a closer look

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