Evening,
When sending every job from lightburn or the controller an error pops up each time:
Water prot 1
Work paused
It only means pressing enter but I assume this is because the machine is starting the water cooler up so there is a slight delay. I know I can turn the check off in the controller but ideally don’t want to do this. Does anyone know a way around this?
It is detecting no water flow, as you note.
This can be turned off in the controller but not recommended.
You can also turn off your ‘door protection’ in the controller.
You may loose other ‘protections’ also as some wire other ‘error’ issues to one of the two inputs for error, water and/or door.
There are some threads of users with 6445 Ruida that have a delay before start option via RDWorks, but about as many don’t seem to be able to pull it off.
My chiller runs all time time. Maybe a switch would be more simple…sorry…
Are you pressing ‘esc’ when this occurs?
Good luck
Hi, I had a similar problem with mine yesterday, i had to turn it off in vendor settings in Lightburn.
I ordered a new water flow meter.
After an hour or so, decided to check around the laser and found that in the water tank i use, the hose had kinked, straightened it out and all working fine.
hope yours is this same simple problem.
I had a similar problem with a new laser and it turned out that the factory had programmed it for 2 laser tube, though only 1 tube was installed. Disabling the 2nd laser tube in settings resolved the issue.
I would say the chiller’s pump should not be turned on only while the Ruida is cutting, I’ve not heard of anyone doing that. The flow needs to be continuous. It shouldn’t be a burden to keep the pump on for hours, and it keeps the tube at a regular temp.
Typically this means you either have a separate switch for the chiller, or the chiller is on the same switch and turned on for the entire time the Ruida is powered.
The Ruida is designed for an on/off flow sensor. It can be a pressure switch- which unfortunately still reads high if a coolant line is kinked after the sensor and has no flow. Also can be connected to the chiller’s “alarm” port if you have one, but again, can’t necessarily guarantee flow.
I mention that because I got a true flow meter that pulses on off as impeller turns that will guarantee flow not just pressure, they’re quite common actually on all the laser engraver supply websites.
But it turns out Ruida does not like these true flow meters. It just samples the WP input and it might see the pulse at the moment or it might not, but retrying after the error might also run, just inconsistently. You might have this problem. Also, I suspect since they’re Hall effect, an impeller that isn’t moving can probably stop at a point where it reads a fixed high or low and Ruida could see the “low” and think the WP is ready when there is no flow.
In my case, I was building a system manager anyways with an Arduino ATMega2560, and just hooked the flow sensor into a pulse counter. When the pulse count is greater than like 25/sec, it pulls down the Ruida’s WP pin to let it run. I also have a CLI so I can query the flow count in a Putty terminal. I feel this is safer since it will detect a blockage (most likely kinked line)
Didn’t take flow sensor apart that came with the machine. Wired up my chiller to the flow switch wires on the machine and the chiller does trigger an alarm if the flow drops.
I also monitor flow rate.
Was surprised to find the tube itself was the most restrictive to the flow…
Figured it was a good idea when I added Propylene Glycol to the coolant for freeze protection.
Someone wired one up to a 555 timer circuit, triggered by each pulse. If it is not ‘re-triggered’ within so long it’s output goes high… Another circuit…
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