Today i was in the middle of a job when i saw some sparks on the ammeter terminals. Stupidly enough i touched one of the wires of the ammeter and i got electrocuted. One of the wires came apart from the ammeter.
Luckily i am still alive and here writing to all of you people.
Unfortunately my ruida 6445G was not so lucky like me.
After the initial shock i shut down the machine and took some time to recover mentally and i powered the machine on again just to discover that the controller has stuck to the boot screen.
I am pretty sure it’s toasted.
Now my question is what went wrong.
Is it possible to get electrocuted from the cathode?
Why does the controller toasted?
What should i check to ensure my safety if i want to continue working with my machine.
Not my kind of machine, but I can answer this. YES. If the component between the cathode and ground, your ammeter I expect, opens up or burns out, you will have the anode potential on the cathode.
Possibilities:
Shunt burns out
Loose connection on the ammeter
Bad ground connection.
Cardinal Rule: Do not touch anything in an electronic device when the power is on.
If this seems critical of you you work, I think it needs to be. We are here to help and keep you safe…
Clarify here, that to be electrocuted, it involves your death. So you weren’t electrocuted… shocked, bit, attitude adjustment or whatever, likely. We’d all be writing condolence letters to your family if you were electrocuted. If you’re from another country, then just note it.
Likely, improper maintenance (wire came loose) and definitely operator error.
The improper response.
Proper response would be to hit or press the Emergency Switch, E-Switch … that should shut off power to the machine. When an emergency arises, hit the button and put a safe distance between you and the emergency. Then you can debug it safely.
On a properly wired machine, no, as it’s only mV above ground level. Even on a mis-wired machine, like yours, you got across it and were not electrocuted.
The meter completes the cathode ground path from the anodes high voltage. If you open this end of the path up, then there could be anything on that terminal. To get across the tube it’s got to be at the tubes trigger voltage, assuming a complete path… You can probably attest to it from personal experience it’s likely not recommended.
The high voltage takes time to bleed off the laser power supply (lps).
when you put you hand in an operating machine, plugged into the mains and sparking?
Don’t stick any body parts inside a operating machine.
My best advise is before you operate one of these, you must engage your brain, that is the only real thing that makes these the safest.
No good reason and I’m surprised it has a problem. The reason I used the is that when it comes to hv, there is no telling where it can end up… other than, we know, it will following the path of least inductance.
I’d suggest you check all the power supplies first to ensure you’re getting power to all the parts.
Next, if you can, ensure you’ve backed up the Ruida, if you can talk to it from your pc, that even better.
We NEVER recommend a factory reset as it looses the data your vendor put in your controller to personalize it to your hardware. If you can’t get it to operate and it’s going into the trash, there is no reason not to attempt a factory reset.
I’d suggest you do not do this until you get some feedback from the troops here.
This brings up other questions… such as how did you see the spark, let alone get a hold of it’s wire? Most of these won’t operate with the cover(s) open?
Now that we’ve (I’ve) beat you up, does what we say make sense?
You can probably attest to it from personal experience it’s likely not recommended.