Electronics for New Machine + Chinese Spindle + VFD

[Clive S]

I have made some more space in my enclosure. The 48V PSU now mounts on the outside of the enclosure back panel. I have made up a box with appropriate venting to enclose it. I even painted it the same colour. This will make a big difference to the space I have to play with inside.
I decided it was "Out of the box thinking". LOL

Have you thought about taking the VFD out of the box instead of the 48V PS.

[mturneruk]

Yeah Clive. But it won't work so nicely.

This way the whole thing stays all as one unit with the controls for the VFD on the front.
I 3d printed the white cover, which when removed allows me to access the terminals without taking the box off completely.



Cheers
Martin

[JAZZCNC]

If your going to have Inaccurate home switches then there's no point having them at all really.! . . The whole point is accurecy and repeatabilty and you'll lose this thru a relay.

If the KK01 can accept 24V then it's simple just drop the relay and put resistor in series. It's the weak 5v signal that's the main issue so removing this removes the problems with sharing switches and complexity of using a relay.

If your planning on sharing switches for both then make it even simpler and make the Switches Travel with axis then sense adustable Targets at each end. This way only need 3 switches and one Input total.

Prox swithces are much better than Micro switches and cost about £1.50 so it's cheap as chips.!

[uli12us]

Where can I buy Prox switches for £1.50?

[JAZZCNC]

Where can I buy Prox switches for £1.50?

Well here's one £1.40 http://www.ebay.co.uk/itm/LJ12A3-4-Z...kAAOSwvt1WQ~SR

Look harder and you'll buy several of them working out at roughly £1

Here's the very switch I tested to show how well they work on a router.

[mturneruk]

Excellent. I like your idea that sounds better and much more accurate.
What confused me was this diagram in the KK01 manual showing that I might need to put extra resistors in the driver wiring as well if I was running 24v through the KK01.
That put me off.



Excuse me for being dumb again, what are the prox switches actually looking for - a magnet (target wise)?
I've looked and can't find any info.

Look what I got this afternoon - happy days!



My cousin cut them for me in his engineering shop.
The CNC mills he's got are serious.
They are perfect the bearings have dropped in beautifully.
So I can start building my machine now.

Thanks Jazz for your excellent input.
Martin

[uli12us]

Strange, i have asked Ebay (but only for P. switch without sensor) and the lowest price was £3.60.

[JAZZCNC]

Strange, i have asked Ebay (but only for P. switch without sensor) and the lowest price was £3.60.

Maybe your asking the wrong question.!!

What you mean P switch without sensor.? PNP with no LED.?

[JAZZCNC]

Excuse me for being dumb again, what are the prox switches actually looking for - a magnet (target wise)?
I've looked and can't find any info.

Nothing dumb in not under standing. Would be dumb if you didn't understand and Didn't ask.!!

They are Inductive sensors so they sense Metal. You can get Sensors that detect Magnets Called HALL Affect sensors. Both are used to do the same job in different conditions.
Inductive are good for routers because no flying metal chips but on a Mill not so good.!

[JAZZCNC]

What confused me was this diagram in the KK01 manual showing that I might need to put extra resistors in the driver wiring as well if I was running 24v through the KK01.
That put me off.

Talkiing about Different things there.! Drives use OUTPUT signals meaning they recieve signals being OUTPUT from the BOB.
INPUTS are expecting to see signals coming INTO the BOB. They are different and separate to each other.