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


 
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uzi9mm

from United Kingdom

Joined: 01 Jan 2005
Posts: 3
Location: United Kingdom

PostPosted: Sat Jan 01, 2005 3:51 am Reply with quote

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.
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Tom.

from United Kingdom

Joined: 07 Apr 2004
Posts: 190
Location: United Kingdom

PostPosted: Sat Jan 01, 2005 4:09 am Reply with quote

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?
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plugwash

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PostPosted: Sat Jan 01, 2005 4:12 am Reply with quote

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
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uzi9mm

from United Kingdom

Joined: 01 Jan 2005
Posts: 3
Location: United Kingdom

PostPosted: Sat Jan 01, 2005 4:53 am Reply with quote

plugwash wrote:
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


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
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breezer

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PostPosted: Sat Jan 01, 2005 8:57 am Reply with quote

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)
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uzi9mm

from United Kingdom

Joined: 01 Jan 2005
Posts: 3
Location: United Kingdom

PostPosted: Sat Jan 01, 2005 1:22 pm Reply with quote

breezer wrote:
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)


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.
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breezer

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PostPosted: Sat Jan 01, 2005 1:30 pm Reply with quote

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)
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