Tree Journeyman 325 (Dynapath)

 
Hi,
My local makerspace has a pair of donated Journeyman 325s. I am retrofitting one with LinuxCNC. We have a small form factor PC that should work with a 7I97T I purchased a while back.
My plan is to leave the wiring alone as much as possible. Using 3 DB37 breakouts and a DB15 breakout. Later I will use more of the existing wiring to wire front panel switches.
The number of IOs seems very limited with only 5 relay outputs and maybe 10 inputs. The input wiring is not very clear in the machine drawings so I will have to trace them out for verification.

I have two different wiring diagrams if anyone needs them.

Linked is a Google Sheet with wiring notes.
docs.google.com/spreadsheets/d/1l1su5IxQ...SPE/edit?usp=sharing
 

First attempt at physically fitting everything together.


Need to work on the 24V and 5V power supply mounting.

Got LinuxCNC installed along with MESA CT. Took me a bit to figure out the mesaflash version situation. Everything is talking now, so yay.

I am a bit leery of energizing the drives as analog control is a bit more unforgiving than step/dir.

Is there any reason why I should not set my analog limits far below ±10VDC? I was thinking as low as ±2VDC to start. Definitely going to just try X first as it has the most travel.

It's often best to de-couple the linear axis when doing initial tests
so no harm is done with a runaway. (there's about a 50% chance of getting
the feedback reversed = runaway at first startup.

It's also important to have the drive enables working so a following
error will disable the drives.

forum.linuxcnc.org/10-advanced-configura...ning-detailed-how-to

It's also important to have the drive enables working so a following
error will disable the drives.

I have two relay outputs I need to get wired up. The default wiring does not give direct control of the drive enable relay which in turn energizes the main contactor. There is a reset relay that latches the enable relay and an error/e-stop relay that interrupts the enable relay.

I will pull the belts off all three servos. Need to figure out the ratio in any case.