Besides the 4 limit switches, which few people use, the Ruida only has two machine protect inputs that I’m aware of… that’s WP (CN5-4) and DRPROC (CN2-3), water protect and door protect respectively.
One of these is not active and preventing the machine from operating.
As @LaserCuttingPro pointed out. It’s one of the two…
Both of these must be low, on mine, for it to operate. Unfortunately there is no led indicator for drprot, but the wp1/2 inputs each have an led that illuminates when active…
You can also go to Z/U → Diagnosis on the Ruida console… this should give you all the states of the ports… in this photo, the Y home switch is active. I think protection on is for the door switch…
I believe these can be enabled or disabled via the machine settings in Lightburn. My door protect was disabled the day I got it…
Good luck
