Prototrak Plus Retrofit with Mesa 7i77 & 5i25 cards

new2linux wrote: This is the only info out there, on this model:

www.southwesternindustries.com/media/manuals/24923_manual.pdf

I am working to verify the voltage and amp settings, keeping in mind the max amp is no more than 2000 Ohms. as per Todd's suggestion.

Do not mix amps and ohms, first is current flowing through, second is resistance. Diferent things and diferent testing procedure.

Ok, looks like Prototrak is not giving on this thing. So you have three gray cables? How many wires in each? Three? How did you pick which wires to energize? Did you look inside the box?

I realize you are not well practiced with electrical circuits. But you really need to know what the wires do. It almost sounds like this has a differential input and you are applying voltage to ground and one leg. And that is why it is taking so much voltage to move the motor.

Best, Dan.

Dan, you are a complete and total gentleman to take time to help me out, I cannot miss lead you or others, please reference this link " forum.linuxcnc.org/12-milling/30954-retr...totrak-plus?start=10 " at about 1/2 way down page 3, Todd has started teasing out the old controller and this if you read all the way will tell you how not to plan well or to be careful and I did not get it correct!
My advise to anybody w/o a bunch of control experience or as you were so kindly put it " you are not well practiced with electrical circuits " to make you box with everything needed plugged in ready at one time (making shore you are correct) so if you move it for any reason it stays as a unit.

tommylight, I here what you are saying. Still working the answer.

Many thanks!!

There was a very long thread on this where we were helping this same individual figure out all of this same info. The thread is here:
forum.linuxcnc.org/12-milling/30954-retr...totrak-plus?start=40

Todd Zuercher wrote: There was a very long thread on this where we were helping this same individual figure out all of this same info. The thread is here:
forum.linuxcnc.org/12-milling/30954-retr...totrak-plus?start=40

I just went with the flow.

Ok, I've read most of the previous thread. I see.... I take it this Prototak sysem has rarely been hacked. I could find no conversation on the amp inputs, and I went to the end of the internet. Is it possible they did not use a standard +-10 volts to drive the amp? I can see in the past thread that this was up and running as a Prototak and there was an attempt to get some measurements.