8x4 Build based on plans by Joescnc Hybrid R&P

[GrahamWhite]

That would be great cheers :)
So far I have..
4 drivers https://www.omc-stepperonline.com/st...or-dm860t.html
Breakout board https://www.omc-stepperonline.com/st...kit-st-v2.html
UC300 eth - 5lpt http://cncdrive.com/UC300.html
24v PSU
5v PSU
toroidal psu with no bridge rectifier or caps as driver accept AC
stop/start button (1no 1nc) NVR
emergency stop button
2.2kw water cooled spindle with VFD
water pump for spindle
big enclosure

Still to buy - control cable?
limit/home switches- do you have them at each end or just for home position?

[JAZZCNC]

limit/home switches- do you have them at each end or just for home position?

My preference is to combine the Home-limit switches and have the switch travel with the axis sensing/hitting fixed targets at each end. This way fewer switches to go wrong and less wires running around machine.

Will you be using Micro switch type or proximity.? My pref is proximity NPN type.

[GrahamWhite]

just had a look and the proximity NPN type are cheap enough and I like the idea of less switches=less cost! lol

[JAZZCNC]

just had a look and the proximity NPN type are cheap enough and I like the idea of less switches=less cost! lol

Ok but due to BOB having a common Ground you'll have to go with PNP.

[GrahamWhite]

Ok thanks- I'll keep an eye out for that when I order!

[GrahamWhite]

So I've learned another lesson on ordering from the USA- again the metric /imperial beast raises it's head again in the form of spur gears on the reduction drives!
And with a local company wanting nearly £100 each to machine up the appropriate MOD 1.0 spur replacement, I'm having to go for an off the shelf spur, have it bored out and get a collar turned up to fit it instead!

[GrahamWhite]

So decided it was time to start laying out the control box

I'm gathering you try to keep the mains power stuff away from signal stuff as best as possible.
Want to try and keep VFD in there as well as I seem to have enough space ....unless I'm missing some bits! nothing big I hope!
Been looking at control cable and wondered how expensive you need to go?
4 core 0.75mm screened Flexible cable £4.13 per meter https://www.rapidonline.com/lappkabe...0-75mm-63-4774
or cheaper 809 cy flex at £2.98 per meter https://www.rapidonline.com/lappkabe...0-75mm-63-4331
Do I run the home/limit switches(magnetic PNP) in 3 core- screened also?