Led on the duet mother board lights up
-
Hi I have had a duet wifi for a wile now but recently have had a problem with the led lighting up when I move my y axis and x axis even when there's no power going to the board I use a ac relay for a keenovo 800 watt silicone bed
-
Can you give us some more detail?
See here for how to help us help you: https://forum.duet3d.com/topic/5909/guide-for-posting-requests-for-helpWhen you move the axis by hand, the motors become generators and create a current of their own which flows back into the board and lights up the LEDs. If you do this too fast you can generate enough current to cause damage.
Otherwise I can't figure out what issue you're trying to describe.
-
@phaedrux ill try to explain it a little better i have had this duet 2 wifi for over a year working great but recently i tried to hook up a a berd air part cooling pump directly to the pwm fan output and i think i blew the fan port or something because now ever time that turn off the power compleatly and i then try to move my x/y axis manually with my hand the little red led illumates near the usb in and i hear like high pitched wine as well when the led iillumantes
-
Yes it sounds like something isn't right. Does it work when the berd air is not running? If so, I would stop using that until you figure this out to prevent more permanent damage.
How exactly do you have the pump connected?
-
@bigwood247 said in Led on the duet mother board lights up:
Hi I have had a duet wifi for a wile now but recently have had a problem with the led lighting up when I move my y axis and x axis even when there's no power going to the board I use a ac relay for a keenovo 800 watt silicone bed
That's normal. When you move the motors by hand they act as generators. The stepper driver chips feed the power they generate into the fused side of the VIN supply.
