I was taking some photos of the inside of the J325 cabinet today to help document things for the new owner and to guide me in doing the Centroid conversion on my J425.
Here's the photo of the cabinet with Centroid parts. It could be even less packed. The circled contactors are for flood coolant and the fan on the spindle motor. I ended up hooking the fan into terminals on the spindle drive and if I ever want to use flood I've got one of those $100 remote tank/pump things from Enco which will be manually switched. So far I've only used the MicroDrop or squirt bottles/brushes.
If I'd known I wouldn't use them I wouldn't have bought them which probably would have saved $30-50, and then I could have moved the DC3IO up higher and had an easier time running cables into the bottom terminals on that.
You can see there's plenty of empty space in the upper- and middle-left of the cabinet too.
The two transformers at the top were in the J325. I reused as many components as I could but a lot of the contactors were 120v where the Centroid wanted 24v.
The J425 has a single 240 to 120/24 transformer that combines those into one block, and that currently sits on the bottom right of the cabinet floor. I don't know if it will stay there. It is nice to have the heavy stuff sitting flat on a horizontal surface.
I tried to have power come in to the top right to the fuses, then to the transformers, then down to that horizontal terminal strip with devices below that. I'm sure there must be some sort of industry protocol but I'd never done this before so I tried to put it in some sort of order that made a little sense. There's a bit of a jumble at the bottom of the cabinet but I preferred to leave the cables to the servo motors on the long side for "just in case."
That is one big backplane and they didn't skimp on the steel. The 425 cabinet appears to have several smaller ones which will be much easier to handle.
Light colored paint inside the cabinet makes it convenient to put on Sharpie labels for the different fuses, transformers, contactors, etc.
There proved to be no need for the mouse that is sitting on the CPU, and now that Centroid can use a USB port there's no need for the floppy drive I added on to the CPU case.
The main DC power supply transformer lives under the cabinet. You can see a reinforcing plate and some of the bolts for mounting it on the cabinet floor.
The CT-Emerson drive and braking resistors mount on the back/outside of the upper right corner of the cabinet, behind the machine column.