Sunday,22-September-2024
DMU50 - 3D probe issues
EN
Before even start that topic, here are the main “characters”:
With yellow rectangle, that is the receiver of the 3D probe, and the probe itself.
What is is the actual issue here, perhaps you`ll ask? Here is your answer:
When I start actively using the 3D probe, first 5-6 months it was working flawless. Then at some point we got randomly error - Probe not ready, but the overall issue was quite fast battery draining.
As you can see, the probe have three “windows” , and inside IR diodes. Also the sensor is above them on angle not on the usual wall mount point. That been said, I change the probe initial measure angle as so as it “looked” straight toward the sensor and none of that metal “pillars” was blocking in that direction.
That fix the problem for a while and later on it brought that message:
and it got stuck there. No alarm reset manage to get rid of it. Now was a good time to check few things.
Wires! Yep, quite often on that machine we had wire or plug quality issues. Wire loom must be something like that one:
But before testing wire conductivity, I have to take the sensor out:
The process is absolute simple, and take no time at all. But once I got it out, and split it the whole story move to different kind of issue:
It was the oil that cause all of that… So, let me explain in a few words:
Drops and splashes of spindle oil were sliding onto the outside of the cable. Then found their way down to the connecting plug and end up inside the connector.
The current and voltage are not high, and frankly quite easy make extra load or shortage via the oil spill.
Simple opening and extra clean with proper solution will solve the case, and thus so it did it for me.
One tiny advice - do not open the rear side of the sensor! There is no wire between the PCB board inside and the pins! Instead, there is similar to copper ribbon cable , but quite hard in some areas and this mean easy to break similar as you cut it with knife. Just clean it properly on the plug side and that is.
Also, in my case to be on the safe side, I check plug to plug the sensor`s wire loom, but it was absolute fine! No bad or split contact or defective wire cable.
Hope that will be helpful to someone else..
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