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« on: July 14, 2021, 04:37:39 AM »
Unfortunately I didn't get around to running it again. I just built the enclosure for the mill and had a few small leaks I wanted to deal with before I made another mess on the floor.
As I stated before I haven't really had much for problems with the machine before however I should point out that I have made a lot of changes to the machine lately.
I am running a brand new VFD because my previous one did not support a braking resistor. I have also transplanted all of my controls into a much larger cabinet. For the most part everything is the same inside the cabinet. The larger cabinet finally gave me the space to completely separate all of my high voltage and low voltage components and wiring.
Three things I think could potentially be problems:
1) The wires running from my VFD to the spindle motor are currently running directly next to all three axis motor wires for approximately a foot before splitting off in different directions. The spindle motor wires are not shielded however all of the stepper wiring is shielded and attached to the panel. Is this ok? Previously the spindle wires exited the enclosure away from everything else.
2) My windows 10 computer that runs Mach has been moved inside the enclosure. This I could potentially see as a problem. The pc is inside an enclosure however at the moment the top cover is missing due to a clearance issue with the cpu cooling fan. Another concern I have here is the pc itself is powered externally so it is grounded to a different circuit than everything else. This is just temporarily the case because I don't currently have a neutral inside the cabinet just two hots and a ground, everything else in the cabinet is able the run on 220v.
3) Both my touchscreen and pendant run to a usb hub located outside my enclosure. The single usb wire running from the hub to the pc was just dangling below my panel within an inch or so of the VFD and stepper wires. I'm unsure how susceptible usb cables are to noise and if that noise could have an effect on Mach4? Today I did run a piece of conduit for the usb cable just to clean things up a bit so if it is an issue it should be resolved.
The pc is the issue I'm the most concerned about. I do currently have the case of the computer isolated from the enclosure ground since it gets it's ground from a separate circuit.
Sorry for rambling on but this is the first time I have ran into an issue that I haven't been easily able to resolve. If anyone has some feedback on the things I pointed out above it would be appreciated.