Help please, how to connect 4 wire PIR to alarm panel.

Discussion in 'Electrics UK' started by uzi9mm, 1 Jan 2005.

  1. uzi9mm

    Joined:
    1 Jan 2005
    Messages:
    3
    Thanks Received:
    0
    Country:
    United Kingdom
    As dumb as it sounds, I need help. I had an alarm already fitted in a house a recently moved into. The control panel is knackered so I brought a new one and disconnected all the wires without making a note of which goes where.

    I`ve figured out which wires are the PIR`s aound the house. The PIR`s have 4 wires -+ and 2 others. The question is how do I connect this to the new alarm panel I have brought an an Rx8.

    Tried making sense of the instruction manual but refers to PIR`s with 6 wires, which I dont have.

    Happy New year to all and please help me.
     
  2. Tom.

    Joined:
    7 Apr 2004
    Messages:
    190
    Thanks Received:
    3
    Country:
    United Kingdom
    My alarm system uses a different coding of wires for every single device.

    You'd better check that yours doesn't before you wire everything in. Would the 2 extra wires be a tamper-switch?
     
  3. plugwash

    Joined:
    28 Mar 2004
    Messages:
    8,818
    Thanks Received:
    265
    Country:
    United Kingdom
    seems like you don't have a seperate pair of tamper wires

    + and - from every pir to the power outputs in paralell

    other two wires either way round on the zone terminals if wiring multiple detectors on a zone they should be wired in series

    some panels may require unused zones to be linked accross
     
  4. uzi9mm

    Joined:
    1 Jan 2005
    Messages:
    3
    Thanks Received:
    0
    Country:
    United Kingdom
    Thanks. I have a veritas 8.

    It has AUX - + so i guess i need to connect the pir into that for the power.

    and has Z1 Z2 Z3 Z4 Z5 Z6 Z7 Z8 meaning 8 zones.

    Is it as simple as connecting the plus and minus from the PIR to the AUX plus and minus and connection the other 2 wires to a zone?

    Help appreciated people
    [/img]
     
  5. breezer

    Joined:
    3 Jan 2003
    Messages:
    23,326
    Thanks Received:
    30
    Location:
    Sussex
    Country:
    United Kingdom
    best thing to do is to open a pir and see how they are connected in that.

    for example

    Red+
    black-

    yellow C
    blue NC

    in this case the red and blacks should be connected to the auxilary supply (as mentioned , all reds in + all balcks in -)

    the yellow and blue from each into one zone (one into each terminal of the zone)

    you then will have the fun of programming it (refer to manual)

    this assumes that the origonal owner did not use a panel which had shunt/ end of line resistors (but you will find this out when you look in a pir, but it is unlikely)
     
  6. uzi9mm

    Joined:
    1 Jan 2005
    Messages:
    3
    Thanks Received:
    0
    Country:
    United Kingdom
    Thanks. If they do have end of line resistors can I easily take them out, or will I have to buy new pir`s.

    Also can new PIR`s been used on a four core wire, if I buy news PIR`s dont really wish to renew the wiring.
     
  7. breezer

    Joined:
    3 Jan 2003
    Messages:
    23,326
    Thanks Received:
    30
    Location:
    Sussex
    Country:
    United Kingdom
    there are three types of panel
    those with EOL/ shunt resisors and those without (and those that can have both)

    Ideally all detectors should be wired in 6 core, if NOT using a EOL based panel
    this is so that any one removing a cover /cutting a wire will set the alarm off when it is unset
    it does this by having the following connections (MOST detectors have the connections, it depends if you use them)
    supply (+ & -)
    circuit / alarm pair (C & NC or aalrm)
    A.T./ tamper/anti-tamper

    by only having 4 wires and not using a EOL based panel, you have no choice, you just ignore the tamper connections in the detector.
    It will not comply to B.S 4737, but then you are installing it for yourself so it doesnt matter (that much)
     

Share This Page