Jump to content

Dry relay help


Recommended Posts

Hi all, 

im trying to link our keypad access control into the dry relay to trigger the power coming on to the room when the keypad is unlocked. I thought It would be a case of connecting the yellow wire to the n/c wire on the pad then to sw1 on the relay however nothing happens. I’ve tried various different ways however nothing. Can anyone shed a light on what I’m doing wrong? Thanks! 

 

image.jpg

Link to comment
Share on other sites

Just so I understand the process here on what you want to try to do. 

when the door is opened or you put a key into the keypad, do you want the power to come on in the room? The SW will then change the input state of the relay to add power to the room. 



 

  • Like 1
Link to comment
Share on other sites

ok I might know but a test would need to be done. 

im guessing you just need to find the right cable that triggers the SW to change the relay input state. My first guess would be the 12v current that is sent to the lock to open the lock. This should then change the state of the relay. You should be able to hear the relay open and close or see the state change on the device. 

the only question I have is if the current sent to the door latch is a that would also be sent to the SW1. But there should be a setting in the APP that allows for the signal input. I don't have any of these type of devices at my house so I cant test it myself I would need to go to the store to get a simular setup. 

Link to comment
Share on other sites

What you are saying is exactly what I’ve been thinking/doing. The lock strike powers when the keypad is open. I’ve taken a wire from the lock to sw1 thinking that when It triggers the relay would work however nothing. I was also thinking that there might be a setting on the unit however there isn’t or not that I can find. I’m sure other will have done something similar some how. It’s driving me mad not knowing 

Link to comment
Share on other sites

  • Administrators

The SW inputs on the Pro1 are not without potential, there is approx. 1/2 of the input voltage on L.

It's dangerous to think you can just use SW for this case.

It is helpful to provide better pictures and more information as well as a connection sketch - as you planned.


But I now think that either a coupling relay (or comparable) is necessary or perhaps a Shelly Plus Uni with an additional contactor may be the better choice

 

Link to comment
Share on other sites

Thanks @Olsche I thought that the pro was decoupled from the mains power and could be considered dry contacts? 
 

I was trying to eliminate any further things being added to the system and was hoping I could get this working this way some how. 

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...