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Smart Home Forum by FIBARO Team

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FGS 224 smart module problem





I have my sliding gate hooked up to the double smart module.

It's set up as a dry contact (normally open) so one wire to IN and one wire to Q1.

That works fine.


Now i want also control the gate by a physical button.

I thought i could do that with the S1 input but the S1 needs to be connected to the L wich means (i think) the S1 has a voltage of 220V (in my case)

How can i do that ? I cannot put any voltage through the wires, that will blow up my gatemotor !!

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@Lode You can use the double smart module with 100-240 Volt AC or  24-30V DC, not both. Look below.


If your gatemotor can run with 24 Volt DC, than also power the FGS-224 module with 24 Volt DC. After you can use a momentary switch as a physical button connected to S1.


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Edited by Fabir
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  • Inquirer
  • Posted (edited)

    Thx for your reply.


    Maybe i didn't make myself clear.

    The module is powered by 220V.

    IN is not connected to any voltage because it's a dry contact.

    The diagrams of Fibaro are not always that clear because you don't need to connect the live to IN for use as a relay.

    So my question is how to hook up S1 to use it as dry contact for a physical button (no voltage !!)

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    Edited by Lode
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    @Lode Terminal S1 must be connected to the potential with which you power the module.

    Yes, you say the Fibaro manuals are always so clear.

    So, according to the manual, connect the same potential to terminal S1 via your button (in your case, 230VAC from terminal L).

    You wrote yourself that no voltage is connected to the IN terminal, so there is a dry relay contact between Q1 and IN, which is separated from S1.

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  • Inquirer
  • Posted (edited)

    Thx for your reply @Fabir and @Martin_N

    That is the solution.
    I installed dozens of fibaro modules but that were all single or double switches.
    This one is slightly different but it works now.


    Besides that the documentation of fibaro hardware is downright bad.
    But the hardware itself is as far as i know one of the best on the market.


    I left fibaro and went to Home Assistant.

    I only use my HC3 to do the z-wave handling because zwave handling by HC3 is rocksolid !!

    HA is connected with HC3 through MQTT.

    You should give it a try.....a whole new world opens.......

    Thanks again 

    Edited by Lode
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