2 Speed Fan

[Tw1zzel]

Assuming the PIR changeover contacts dry contacts..   {A lot of PIRs are just a changeover relay}

i.e. you have to wire a strap the the 'c' common to get your voltage out on 'Norm Closed' or 'Norm Open'?  then you can do it without a relay I think....

IF YES..

then you could wire the 'NC'-'C' contacts in series with each other to the trickle input

So if one PIR is already working there is no need for the other PIR to apply power as the fan is already on boost!!

and just strap the 'NO' contacts to the boost IP 

see "rough" sketches below...

fan1.JPG

fan2.JPG

Guinness

Thanks SL did a bench test and worked well, awaiting on some 6 way connecting boxes and will then install 

 

[SPECIAL LOCATION]

Thanks SL did a bench test and worked well, awaiting on some 6 way connecting boxes and will then install 

Glad to hear it...

thats what forum is all about..

question is asked...

various members bat a few ideas about...

Bit more feedback from the originator of the question..

then a solution is (hopefully)  found...

unfortunately occasionally a person asking the question hasn't got a clue about anything

and won't provide any additional feedback so you cant resolve the issue for them..

In those situations there isn't much anyone can do!!!!

And its always good to hear back when the originator has got the actual solution wired up and working on the real job!

so thanks for the feedback.

Guinness   Guinness Guinness  Guinness   Guinness   Guinness

 

[Tw1zzel]

All installed working fine, a bit of a job sitting room only in loft, some crawling and a 6 way junction box to play with!!. Again thank you SL and every one else.