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Double relay FGS-224 (FGS-223) to operate two solenoid valves


assosboy
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Hello to everyone.

I want to control two solenoid valves for irrigation in my garden. The valves are 24 Vac.

Can i use double relay switch (FGS 224 or FGS 223) to do that?

I'm thinking the below connection diagram. 

Please login or register to see this attachment.

Is this connection going to work?

I mean, is ot possible to connect 24Vac to "IN" or i must only connect 24Vdc?

 

Thanks a lot.

 

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At the Q1 and Q2 terminals you will have 230V. You would have to use 230V relays and an external 24V power supply.

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It might seem logical to do as you suggest, but the manual does state "always use the same power source for L and IN".  Seperate slave relays are the way to go as @coonrado suggests.  There is another reason for this - the manual states that the load should be resistive only. Your inductive load solenoids may overwhelm the contacts in the FGS, causing them to weld together.

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10 hours ago, assosboy said:

Hello to everyone.

I want to control two solenoid valves for irrigation in my garden. The valves are 24 Vac.

Can i use double relay switch (FGS 224 or FGS 223) to do that?

I'm thinking the below connection diagram. 

Please login or register to see this attachment.

Is this connection going to work?

I mean, is ot possible to connect 24Vac to "IN" or i must only connect 24Vdc?

 

Thanks a lot.

 

The answer is definitely yes, you can use it.

I use same configuration for my solenoids also. Just in my case I have 12V.

Works fine for almost 4 years.

4 hours ago, coonrado said:

At the Q1 and Q2 terminals you will have 230V. You would have to use 230V relays and an external 24V power supply.

At Q1 and Q2 terminals you'll have whatever connected to the IN terminal.

The common practice is that we connect 220V to IN, but it is dry relay....

Edited by cag014
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@assosboy ...and other.

These questions are repeated over and over again. Dude, they don't know the electrical profession, I'm not sure even after reading the instructions. Anyway, I gave advice on a similar question on the oredchozi post:

 

 

 

In my opinion, why it is stated in the FGS manual that you have to connect the same voltage to the IN terminal as you use to the L terminal (when L=230VAC then IN=230VAC, or when L=24VDC THEN IN=24VDC) is simple.
This is about the insulation strength of the particles on the flat connection inside the FGS, and the regulation on the same type of voltage ensures sufficient protection. Maybe someone from Fibaro development can respond to this, whether this is really the case.
Don't take my word for it now.
It is similar to a relay with more contacts. At first glance, you have separate circuits, but the working contact gaps, for example, do not provide sufficient insulation strength against jumping of bumps/interference.

 

eM.

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