Just had a Woah WTF! moment…not happened before
I’m reasonably proficient with the use of a laser and have many years experience
I currently have a Chinese 80w - looks very similar to a rebranded Omtech
Ruida Controller
Running Lightburn 1.6.03
So I ran a quick acrylic jobbie and lifted the lid to retrieve it
and then reached over to turn the extractor fan off. I didn’t catch anything like usb cable or anything - nothing is in the way - the plug for my extractor is on the wall about 1 foot to the right
Just as I reached to turn it off I heard a whirring - it was the laser head moving
and it proceeded to cut a 6mm circle…completely before the open lid sensor kicked in and it errored out
Now the thing is my lid was open and I don’t allow laser to run without it being shut
My question(s) then…
is there a delay before the disable kicks in?
has anyone noticed a job repeating itself without the instruction to do so - it cut in exactly the same place - it actually ran long enough to cut a 6mm circle at 20mm/sec - I know…that only takes about a second but…if it is a delay thing then I need to know. I always thought it was something like this: 1) send info to laser and get cutting 2) laser checks water is running and lid is shut and if both yes…proceeds to cut
The delay should be effectively zero. This is indicative of a failure of some sort, likely either in the door switch/sensor itself, in the wiring from the sensor to the controller, or in the controller.
What type of switch/sensor is used for the door? If it’s inductive is it possible that as you were leaning over you had something that could have gotten close enough to the sensor to create a false positive door closure signal?
If not, it’s possible that the sensor is in the process of failing. Check the sensor and wiring to make sure there’s no physical damage. Go to the diagnostics screen on your controller and run various close/open scenarios to see if you can reproduce the issue.
If the issue is not with the sensor or wiring itself then it could indicate an issue with the controller.
Did the machine console give you a lid open error message? I assume you’ve enabled the lid protection within the Ruida?
These are pretty much instantaneous, at least much faster than you are speaking of. On mine if one of the become active, it instantly shuts down the whole machine.
Sensor for door is a push down spring thing that the lid pushes down.
No - nothing would have affected that sensor - I have to side step the laser machine and then reach for it - but it’s a spring thing anyway.
Doesnt appear faulty - not sticking
Yes - Ive had the error a few times when the lid was actually open - cant remember the exact wording but it was the same
but this time to actually go ahead and work…was a bit scary
and…why would it run on its own I’m wondering?
Just curious. Did you hear the end of job beep from the machine before opening the lid? Is it possible that there is a duplicate shape in your design that it went to after you thought it was done?
No - I’m quite meticulous with my files
Just double checked and its fine
The job had finished with the usual Beep Beep and green light
(I have a fancy stand up green (ok to open lid) or red light (if you open lid I will stop) on this one which is actually really good)
I had green light and a beep beep. The job finished exactly as I wanted it.
Yeah - that’s what I thought
To see the laser head move (origin was very close - only a small part)
back AND THEN start cutting was quite disconcerting
From Lightburn
I never thought I’d convert as I used RDworks with CorelDraw with my last laser for years
But thought i’d see what all the hullabaloo is about…love it!
It will never replace Corel but as an interface its exceptional
That might be the cause of your issue. On my diode laser, which requires the start button, if the start button was the last thing clicked hitting the space bar will restart. It might operate the same with Ruida, not sure. It would be easy enough to test.
I typically send the file and start from the controller. Sometimes using send can have data errors.
My only guess is some type of voltage/interference when you shut down your ventilation system is getting into the Ruida. This isn’t it’s normal operation.
