Wiring two pir alarm sensors in series confusion help!

Discussion in 'Electricians' Talk' started by Tintin77, Aug 22, 2013.

  1. Tintin77

    Tintin77 New Member

    Hello.

    i Am having a bit of a headache about an alarm box I am changing. I have got everything working except two pirs that are connected together and on different zones. The pirĀ  sensors have six terminals+ - nc nc tamp tamp and the cable is 6 core. The cable comes from the panel to the first pir then links to the next . I understand ( could be wrong) that the +- needs to be wired in parellel and the tamper and alarm contacts need to be wired in series. I realise this is simple and commonly done but I am having a brain freeze. Can anyone explain in laymens terms please. The alarm is optima/accenta with led keypad
     
  2. FatHands

    FatHands Well-Known Member

    Hi Tintin,

    You are correct that the supply to the PIR's are in parallel and the detection and tamper goes in series but this is for things on the same Zone mate.

    Let me know if you need a diagram to help.

    Cheers
    Fats
     
  3. Tintin77

    Tintin77 New Member

    HI there, thanks for the response inwould love a diagram please
    Thanks
     
  4. Sean_ork

    Sean_ork Screwfix Select

    if you've got nc contacts wired in parallel you'd need both alarms to be triggered to signal the box
     
  5. FatHands

    FatHands Well-Known Member

    Hiya,

    Not the clearest of diagrams, but n/c is normally closed - the alarm trigger, TA - Tamper

    Hope this helps.

    Fats

    [​IMG]
     
  6. Tintin77

    Tintin77 New Member

    Thanks for the diagram most appreciated.

    tintin
     
  7. Lectrician

    Lectrician Screwfix Select

  8. FatHands

    FatHands Well-Known Member

    Thats a better diagram than my crayon effort Lec ;)
     
  9. Lectrician

    Lectrician Screwfix Select

    I remember posting it a while ago, so found it again!
     
  10. FatHands

    FatHands Well-Known Member

    Good call! The OP may have a better chance of getting his alarm working now!

    Cheers
    Fats
     
  11. Gregrae

    Gregrae New Member

    On the circuit where do the 2K 2 resistor go
     
  12. Garry1974

    Garry1974 New Member

    could i get a copy the diagram pls as i want add a second pir to the same zone the existing one is on
     

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