Zenford Zeigler Retrofit

Thanks for that, we have the same wiring at the driver as this, I think what you say about a fault line to the controller could be correct, the guage of the wire means it can only be signal of some sort. I think the issue maybe the we currently are not using contacter K4 and just have it hard wired, or our 0v signal from the cs labs is putting out some voltage. the other problem we can only put out +ve voltage, so will need to add polarity inverting, fun and games. Appreciate your help.

There is 3 pairs of small red and white wires on the left side. These are Analog inputs for drive, spindle speed meter on front of cabinet and tacho. 2 small orange wires are external fault, coming from limit switches and the axis drives. Hope this might help.

haha. didnt realize you had replied already...
Sounds like a bit of fun for ya.

Well 10 weeks has come and gone, havnt heard from Mesa yet in regards to building 2 x 7i29's. Hoping to hear something soon. I did manage to test my spindle motor and drive (just in open loop). Happy that went without any problems, also hooked up axis and spindle resolver feedback signals to the 7i49.

Slow going, but i guess its not a race.......

Well, over the last few months, i have been working on changing my little router from GRBL based system to Linuxcnc. Started with a simple Parport setup, then went with a 7i76e, that i got from fellow Aussie Rodw. I initially bought the 7i76e to learn linuxcnc setup with a simple hardware configuration. I really enjoyed the progressive setup of this small machine. I was n enjoyable way to learn, without fear of damaging expensive larger mechanical and electrical components. It runs great. Just need to make a nice little pendant for it.

Looks great. Glad my spare card is being put to good use

A wired pendant using the 7i76e MPG inputs and a couple of switches for axis selection and scale would not be that hard to do.
I installed an extravagant wireless pendant that has a relay box/receiver in the control box that resulted in another mass of wires as part of my learning journey. But it cost me about $500 ex China. Might be overkill for your machine.