I just set up a new CO2 100W Ruida rdc6442s Controller Laser Max Machine. I’m using all the default settings. Homing is enabled for X,Y and Z axes. I’m using a 9L water cooler and air assist is turned on. I did not do any reset action. I have lubricated the rails. I am running a job but the laser engaves out of position and the makes a lot of noise as if its bumping into something along the rails. The rails are cleaned and lubricated.
Wise man… go to Edit → Machine settings and save the information to a file, as is, from the factory as a backup… Put it away for safekeeping. When you break it, you can just reload the original…
This and
doesn’t give me much to go on … Can you post a video and/or photos of what it’s doing.
This being a new machine, I wouldn’t expect any issues.
I assume it homes properly?
Yes it does home. X=0,Y=0,Z=3000. During engraving, it starts making noises as if its rubbing on the rails but there is nothing obstructing it. Also the LED light 14 is blinking.
From what you are telling us, it is homing properly and the values look correct.
I hope you have no Z axes as it’s at maximum.
It’s always nice to have this information, but you could save us time by identifying it as the run led… light 14 makes me have to look at my controller manuals or pictures and see what that leds function is.
Many people don’t know about these… we don’t learn by osmosis, unfortunately.
Notice how these a labeled on the controller… I hope… 
This is led 13 photo which you can see is actually the error led, but you can see 14 is associated with run led.
I think you’re OK as the run led on mine flashes… I think it goes solid during a run…
It seems pretty clear you have something mechanical obstruction or binding somewhere in the drive chain while it’s engraving…
Determine if possible, where is the general location of the head when it makes the problem sound/vibration…
You mention rubbing on the rails, is that when it’s at the center, right, left over the entire rail?
Power it off and by hand move the head around that area and feel for any kind of different feel, like it’s hitting or dragging on something.
Be aware that stepper motors will generate power when moved by hand… they are PM motors. I tend to not shove them around at high speed to reduce the amount of power generated by them… I’ve lit the Ruida machine console up doing this…
Some of these noises can be generated by the setting in the machine itself, although on a new machine or one that’s been working, I’m skeptical.
You can modify the acceleration values and make a racket…
Any chance you could post a video (or link to) with sound to help us isolate electric vs mechanical… I’d bet it’s a mechanical issue.
Good luck
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