Nearly crashed my denford triac machine and not sure what went wrong, help please?

**Boyan Silyavski** · 06-06-2015

I have seen that happen to me in 2 scenarios.
-while when machine is cutting i forget about that and cut something with the plasma cutter outside the room. I know right away that the machine misses a step, cause i have connected loudspeakers to the pc, cause when not cutting i am listening to music. So when it skips a step from inteference there is a "piu" sound in the garage

-i have one slippery, to say, collet for my 3mm bits. Some times i will not tighten it well, so the bit would dig and make something like that. but this machine is flimsy so i dont know if that could be your case

**JAZZCNC** · 06-06-2015

Originally Posted by silyavski

I have seen that happen to me in 2 scenarios.
-while when machine is cutting i forget about that and cut something with the plasma cutter outside the room.

Get your self a Cslabs controller.!!!. . . . I can cut with Plasma, weld with TIG or Mig right next to my machine while it's cutting and it doesn't even flinch.!!

Originally Posted by silyavski

-i have one slippery, to say, collet for my 3mm bits. Some times i will not tighten it well, so the bit would dig and make something like that. but this machine is flimsy so i dont know if that could be your case

That crossed my mind Boyan but Wouldn't explain the shift to right thou would it unless it stalled motors first then ploughed on thru. Only Suesi will know for sure if he watched it close enough.
Also the cutter would be stuck out further from collet which would be sign. As would it not going back to same height or back to zero in Z but he didn't check that I've already asked.!

**suesi34e** · 06-06-2015

Hi silyavski,

Many thanks for the reply here. I was not welding as don't know the first thing about welding. I have no speakers connected to my computer. I may have had a vacuum running but I doubt it as I was hardly intending to cut much the only other thing on would have been a Makita radio and dehumidifier.
I don't think tool slippage was an issue in this case but thank you for the thought. One of my jobs on the horizon mind is to make a part to hold my tool holders.

As for an update on what happened I was stood right in front of the mill it started to go south and before I got to hit the E Stop the electric supply tripped and I was in the dark.

All the best

Suesi

**magicniner** · 06-06-2015

The fact that the breaker/fuse for the mill didn't blow before the entire workshop power went out would worry me more than the mill running off.
Do you know why the shop supply tripped out first?

- Nick

**suesi34e** · 06-06-2015

Hi magicniner,

Thank you for your msg. What you have said about why the shop supply has tripped out first has got me thinking for sure. I think it was because I have the shop supply plugged into a circuit breaker. Thanks for the thought Nick.

All the best

Suesi

**JAZZCNC** · 06-06-2015

Originally Posted by suesi34e

As for an update on what happened I was stood right in front of the mill it started to go south and before I got to hit the E Stop the electric supply tripped and I was in the dark.

That's pretty big detail you left out there Suesi sue.!! If you don't give all the details then it makes helping very difficult.!

When the Machine went wrong did the Spindle jam.? Being a DC motor this is about the only thing that would possibly hit the breaker hard as the converter ramps up the amps to try and maintain speed. Steppers would just stall and trip the drive rather than mains elecy.

Still doesn't explain why it went Awol but would explain the trip.!

**magicniner** · 06-06-2015

"Plugged in" or "Wired in"? And with what cable running to the shop?
If your machine can draw enough current to throw the breaker is it possible that you're getting mains voltage drop in your shop when the mill is running?
Ideally you should have a breaker on the wall which will trip before the mill can throw the supply breaker,

Regards,
Nick

**suesi34e** · 06-06-2015

Hi Nick,
Thank you for your msg. What I have is a two way socket in a shed in that has a plug in circuit breaker, from there I have approximately 70 meters of 1.5mm 3 core cable to a container where I have my machine plugged in just the normal 3 pin plug. I only have one machine in the container so I am not running lathes, saws or any other machines just the mill. I used the circuit breaker in hope it would help protect my mill.
Many thanks
Suesi