12z Version 2.0

The 2nd round of electrical components are inbound...have I mentioned I hate the cost of electrical? :cussing: The price tag was getting out of control so I reeled it back in. I'm not really going hog wild on this stuff but I bet I'm north of $900. Part of that was re-wiring my single phase supply, I upped it to 4 wire 10 awg 30 amp 220 vac so some wire for the panel, a new 4 conductor twist lock outlet and plug, big ass heavy 28 foot flex cord, cord grips see that's how you get to $900 on this stuff.

When the smoke cleared I settled on a simple 3 push button configuration Forward, Reverse, Stop, with a pot for spindle speed. Of course as is typical with electrical you buy one thing then the other five things that one thing requires so push button enclosure, wire cable, relays, relay sockets, DIN rail. :cussing:

I did splurge on my spindle speed pot, I ordered this 22mm Eaton with the built in scale for $97.


After deleting the cable carrier from my cart several times, I felt the motor and push button cables were going to flop around otherwise so I bit the bullet and added that $118 item.



I decided this enclosure was the best fit...after already ordering another enclosure which again is typical of buying electrical.



I settled on these flush push buttons in red, green, and blue with the appropriate NO/NC contact blocks.


Of course a bunch of other stuff, cooling fan, wire duct, control cable, cord grips, terminal blocks. I think this setup will be high quality, the components will out live me, but its not fancy just for the sake of being fancy. No rows of DIN mounted terminal blocks I used the old fashion type at 1/4 the cost. No panel mounted tach, no jog button. We'll see how it comes together this weekend.
 
For your big enclosure, I recommend you get some of that plastic cable raceway duct stuff. Makes it so much easier to cram all the wires in there in a way that looks halfway decent. I am talking about the gray ducting below with all the wires running in through the individual fingers.

IMG_0087_zpswo3hhruj.jpg
 
Tmarks that looks like the control panel for the G0670 16x40 lathe, did you buy one? I did pick up some of that slotted wire duct.
 
I wish. Although I probably would have been happy with a G0506 (but I decided that I would save the $$ to buy Tormach's CNBC lathe).

No, that was the picture I took in Bellingham. It was just handy to explain what I meant.

You know, having the VFD really empties out the electrical cabinet. Since you don't need separate contactors for forward and reverse, etc. My g0709 has about 3x as much junk jammed in there.
 
The first batch of components arrived today, I'm pretty happy with the Eaton pot its turns smooth as butter, feels hydraulic, not too stiff or loose just right. The Danfoss pot on the VFD in comparison had three problems, its tiny, it only has about 180 degrees of rotation vs 270 for the Eaton. The Danfoss pot is also so loose it made fine adjustments pretty annoying.



Here's a pic for size comparison



Nurse, #2 scalpel please...
 
Well its coming together slowly but surely, I still haven't cleaned off the shipping grease.



Here's those laser cut legend plates I ordered after another member posted a link.



I picked up some garage hooks sold at Lowes to hang the power cord on.



The cabinet wiring is getting there, after buttoning up the motor and push button boxes tonight this should go pretty quick. Just the control wires and relays left. That enclosure fan was not that expensive and is quite the brute, cast aluminum and aluminum fan blades.
 
That is where the big cabinet helps. Really hard to stay neat when you try to shove it in too small of a cabinet... and then you end up with ventilation problems.

Looks great.
 
Coolidge,
What is the source of the cooling fan? Is it 110v?
Dave

Yes its 120vac, I selected it because at 28 decibels it was one of the quietest fans listed. Also I was wrong, the blades are steel not aluminum, $27, from McMasterCarr http://www.mcmaster.com/#1976k41/=wrapkn plus $4 for the stainless grill http://www.mcmaster.com/#19155k125/=wraqsa you will also want one of these I failed to order this and had to remove the quick disconnect leads on the fan and solder on some wires. http://www.mcmaster.com/#19155k142/=wraukv
 
Back
Top