Thread: Limits, homes, override switch
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26-02-2016 #21
I think all the inputs are 5V. How would I wire the resistor (I mean, I know it's a simple wiring diagram), but how do you actually wire it. Is there any kind of "terminal resistor" ?
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26-02-2016 #22
I saw only once a special resistor socket to be inserted in terminal block. And there are terminal blocks with resistors, diodes, electronics fitted inside.
The simple way is to solder the resistor to the wire end. The third method is not recommended unless you solder the input wires together.
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19-10-2016 #23
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19-10-2016 #24
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19-10-2016 #25
So the best option is to use resistor and take 24v straight to bob?
Išsiųsta naudojantis SM-G900F Tapatalk 4 Lt
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19-10-2016 #26
The LJ12A3-4-Z/BX sensors I use with this board are NPN - the output of the sensor goes to GND when triggered - which is what you want. The board has pull-up resistors so that the untriggered state is strapped to 5v. You don't need resistors as the 24v power to the sensor is limited in current to 2.4mA and in voltage by an internal zener diode in the switching circuit.
These sensors have been designed to make connection simple and to have wide application, why do people then have to make things complicated. If you complicate you introduce the possibility of design faults and unreliability.
I lose the will to live every time someone mentions a relay in a homes circuit.
For Pete's sake, there is plenty of info and advice on t'Interweb. Do a bit of searching online before you regurgitate the same old questions.
Happy bloody christmas !!!!
Rob
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