MC 500V Minimaster retrofit

Ldguinn1 wrote: Well ok then. Since it is a Yasnac i guess I need to figure out the encoder and spindle drive.

I think that PCW has suggested a simple voltage-divider to connect 12V encoders to the Mesa card 5V inputs in the past.

Ok sorry i've been MIA.

Carpal tunnel surgery sux.

So I finally got my mesa boards, 6i25, 7i77. Started tracing wiring, realized its probably time to start pulling the boards such as the yasnac motherboard, memory boards and such.that would help with wire tracing, the wires are bundled about an inch thick. I need to order optocouplers for the encoders. i have cpcr-mr 052gyo b servopacks, I ifgured out the output but not the input yet. and what looks like a cps-25 for power distribution to the packs. So baby steps, but at least they are steps.

Lyle

Cps 25 is a 5,12 ,24 vdc supply for the original.control and machine logic, relays sensors ect. If you have transistor drives, they will have a separate 100vdc supply. If you have the older scr drives they will be fed with AC and have contactors on them. The I/ o is handled by two other boards which are usually jancd - something. Out put will be the huge rack of ice cube relays in the door. The yaskawa encoders use some weird signals and if I remember, are not differential. Did you have an mx-1 or 3000g?

We are at the starting stages of converting our matsuura. It is a yasnac mx1 control. The documentation we have seems to show 5v differential encoders. (Have not physically looked at them..)

sam

Page 16

www1.yaskawa.com/site/dmcontrol.nsf/link...7.32.pdf?OpenElement

sam

We have wo matsuura 760v with mx1 controls. Both use the same encoders.




If you have transistor drives drives, you will have a DC power supply like so





Your inputs run into two boards like these. .





The mx1 interconnect manuals are online. How much luck you will have getting each plug/pin signal is iffy. The wiring diagrams should say.