What is the difference between these two circuits?
Well, if I were an expert… that's why I'm asking. It's about an ABB E232-230 stairwell light switch. In both cases, four cables are connected. In the 4-wire version, the button and lamps are separate, so contact 4 is connected to L with the button on the switching relay. And contact 3 is connected directly to N. So 4 = L and 3 = N. I don't understand the 3-wire version. Why are contacts 4 and 3 suddenly L? There's no setting option on the switch. Can someone please explain this to me?
The 4-wire circuit with a switching relay doesn't work, but I just swapped the cables around and labeled them beforehand.
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Once you need an additional phase on the buttons, there is a 4th wire necessary, or the existing N is scanned, and the additional phase is omitted (3 wires)
Thanks for thinking, I just can't do it. I understood your statement and looked through it. The 3-wire system is built because the 4 goes to N via the Eltako. It doesn't work with that. Then the new switch is broken, right?
What I don't understand is how it can be that contact 4 changes polarity and goes to L once and to N once?
What if the 3-wire screen is incorrectly drawn on the switch?
It's not drawn wrong… The evaluation electronics, which are supplied over 1/2 permanently, recognize this reliably….
That's what you found.
Can be, but can also be due to other causes…
Right, that should be in the instructions, exactly. The nice OBI staff gave me the switch from the shelves, without packaging and nothing. In www I did not find any assembly instructions. And anyway, you didn't see it either, that calms me. Still, I'm ashamed. Well, the next switch…
I didn't pay attention to the picture. This should also be the guide. If it works now, it's great. :
That with the "three" is such a thing. The "can" is close to it. You shouldn't overdo it with the skill.
You're sure sometimes that your brain can't start with an info. And then suddenly. Our Mitdenker timestyle is right, in fact, the rotary switch is located at the bottom left between 3 and 4. Looks at the photo with the ladder variants. Who knows is clearly in advantage. And learned something again.
Did you think the Ader is N? If necessary, blue is also used as a return conductor for scanned L… Color alone says NOT! Therefore ALWAYS measure two poles! With so many questions/ignorance, a specialist on site would be much better, strictly allowed You don't even…
I'm sure you're right, with the evaluation electronics, as layman is incomprehensible to me.
I got off the renovation of the apartment (where Yellow/Green was covered with L, I fell off the short by the ladder) still a 10-m test cable with a croco. I connected this to 4 = blue and searched. Is on the Eltako and then on N. Because 4 is on N it must be the 3-wire system, or ? In other words, 4-wire does not go because 4 is on N. And if I go from 4 to L the switch does.
After that, I rebuild the circuit and drive to OBI. What do you mean?
In short, in the case of the 4 conductor system, the phase is scanned, in the case of the 3 conductor system of the N which you are anyway due to the lamps or consumers need
Thanks for thinking, I'll copy my answer from above. And go to bed, enough for today.
I have understood your statement and read it through. The 3-wire system is built because the 4 goes to N via the Eltako. It doesn't work with that. Then the new switch is broken, right?
What I don't understand is how it can be that contact 4 changes polarity and goes to L once and to N once?
What if the 3-wire screen is incorrectly drawn on the switch?
For this, the rotary switch is on the relay. This will switch between 3 and 4 👌🏼
I think so
So this is not okay, my hymn of praise on you is gone. You're right, look at the side with the circuits, left down in the corner is 4 and 3, this is the rotary switch. And works.
No, there's no rotary switch to change, that's what evades me.