Aluminium profile cnc build

[valdis034]

Hello. Coming back with some updates from my build.

So the news shortly are that mechanically machine is done, and partially wired. Now it will be time for the electrical drawings, laying out components buying some of them, mounting everything into electrical boxes..
Some progress photos:


At the moment I ended up with some cables which will need to go to two control cabinets. Two because one is not enough which I got initially, so I got another one the same size, so I am thinking to have mains voltage distribution, for pump, powers supply, and vfd in one box and all the electronics to have in another one.

Now I will be doing a bit more reading about electrical side, try to draw some drawings. Have couple of questions for now
1. About x axis (long one ) home and limit sensors. As I am using one sensor for homing and limits I will have senor traveling with the gantry (one sensor on each side of the gantry) and it will see a bolt in the extrusion channel in each end of the machine. How will I make them bolts in each side to be in exactly the same position so gantry will be square when it reach the sensors?


2. As my vfd is a bit different I don't rellly get how to control it with external signal from mach? That Chinese manual is not very clearly written. Lets say I want to start spindle . Do I need to short RUN terminal with GND terminal or I need to use 5v or maybe 12v inputs and then to set it in parameters? Jazz said he used one of them before, might remember it. Heres the drawing:


3. Bought 13 liters tank for coolant I think should be ok? I had a tiny aquarium pump 1000l/h wich probably will not be powerful enough to lift the water all the way to the spindle, so might be looking for something bigger. I was thinking use car antifreeze and mix it with distilled water, so the system will be clean, and in the coldest times in the winter it will not freeze inside the spindle. What are your suggestions on that?


Thank you and I am sure I will get back wit more questions! :)