Electronics for New Machine + Chinese Spindle + VFD

[JAZZCNC]

Fingers.!!!. . .Then under wear.. .

[mturneruk]

lol. Cheers Chaps. I assume you have never done it then...

[njhussey]

I've jogged the Z axis into the frame sides slowly and caused the drives to fault but never (yet...) full on crashed it. Slapped the "OH SHITTTTTT" button a few times after forgetting to re-zero and the machine's taken off in an unexpected direction....

[JAZZCNC]

lol. Cheers Chaps. I assume you have never done it then...

Many many times. My old machine used long timing belt which were uncovered this grabbed my shirt and half ripped it from my back before de-railing it's self. Even the Oh Shite button wasn't saving me that day because I couldn't reach it.!! . . . Now all my machines have several Oh shite buttons dotted around.!!

DONT Under estimate the power of steppers when connected to ballscrews. They will happily crush or rip your hand off just has easy they cut thru metal.!!

[mturneruk]

Yeah been thinking about that would love to have my moving parts and ball screws covered really, but my design does not lend itself to that easily.
Been looking at brush bars to see if that would help. Still working on it.

[uli12us]

That have not much to do with Ballscrews, the same can happen with acme screws.

The Spindle have a diametre of 12mm and your motor a torque of 2,5Nm. If something was wrapped around the spindle, so it pulls with 2500Nmm/6mm~400N or 40Kg. Thats impossible to hold, especially if it happened surprisingly.

[mturneruk]

Duplicate. Please remove.

[mturneruk]

It only bloody works. Managed to get the 24v psu powered up today along with the relay to prove your latching circuit Jazz. It worked and nothing blew up!
Top shout thank you!

I was able to power up the 48v PSU via the relay and then when pressing the Estop the relay would switch and the 48v PSU would power down. After releasing the Estop, pressing the momentary would then fire the 48V PSU back up again.

Great idea!

Here are some pics of my wiring. I used a 2 Amp fuse for the 24v / 5v PSU's and a 10Amp fuse for the 48V PSU. Hope that's right. Does everything look ok to you ?




Here is the shelf that will carry the UC300 / KK01.



Right onto the 48v Stuff now. Leaving the VFD out of the equation for now.

Thanks again.
Martin

[Clive S]

Martin A mute point but I might have used Brown and Blue for the 230V cables and red and black for the DC stuff. Its very easy to get mixed up later. Or now it has been done use a different colour for the DC stuff

[cropwell]

Fingers.!!!. . .Then under wear.. .

Two fingers and knickers to you !