Ness D8 Home Alarm wiring help

[Jason]

Am currently wiring-up a Ness D8 in my new home. When powering-up the unit
(non-programming mode) the system goes into immediate alarm (siren
sounding) state. I have removed wires from the tamper (tamp) connector to
eliminate those, so only have 5 PIR's connected.

Quantum PIR's are using 6 wires (tamper wires disconnected like stated), so
am at a loss as to why the alarm is sounding on immediate power-up? The
other 3 zone inputs are 'completed' with 2K2 EOL resistors as instructed,
as are the 5 PIR's.

Anyone able to lead me in the right direction? My next step tomorrow (had
enough tonight) will be to disconnect all PIR's and then test if alarm
sounding is immediate, then re-test as each PIR is connected.


Cheers,
Jason

 

[Unbeliever]

Am currently wiring-up a Ness D8 in my new home. When powering-up the unit
(non-programming mode) the system goes into immediate alarm (siren
sounding) state. I have removed wires from the tamper (tamp) connector to
eliminate those, so only have 5 PIR's connected.

Quantum PIR's are using 6 wires (tamper wires disconnected like stated), so
am at a loss as to why the alarm is sounding on immediate power-up? The
other 3 zone inputs are 'completed' with 2K2 EOL resistors as instructed,
as are the 5 PIR's.

Anyone able to lead me in the right direction? My next step tomorrow (had
enough tonight) will be to disconnect all PIR's and then test if alarm
sounding is immediate, then re-test as each PIR is connected.


Cheers,
Jason

Sorry, can't find my manual just now but:

1) Instead of guessing, why don't you check the memory of the machine to
determine which sector is causing the thing to go off. How to do this in
the manual I can't find.
2) removing the PIRs will definitely cause the alarm to sound (unless the
circuit is completed with 2k2 resistors).
3) Check if the tamper switch is normally closed or normally open. If it's
normally closed, removing it from the circuit is likely to be what's causing
the alarm.
4) refer to 1)

I installed one of these with no problems at all. For your sanity, I
suggest trying it with the siren disconnected.

Cheers,

 

[alc]

Prog tamp jumper J1 - check status of this link

 

[Jason]

Prog tamp jumper J1 - check status of this link

Thanks for help all, but still an issue. (Have removed siren and top-hat
screamer to save my sanity <g>)

Have checked Prog Tamper J1 (opening of cover or removal from wall) and it
appears to working fine. If I hold switch in, no tamper alarm but if I
allow it out, then there's a tamper alarm (This is with all other tamper
wire connectors for the PIR's removed from the controller). If I leave the
switch out or disconnected whilst powering on, then the system goes into
programming mode as it's supposed to.

I have 5 Quantum PIR's using the 6 wire connectors (power and ground, zone
alert and common/ground, tamper and common/ground). Each PIR connected to
it's own zone (1-5) and zone's 6-8 empty but 'completed' with 2K2 EOL
resistors. (one side of resistor in zone connector and other in the
common/ground connector for that zone) The tamper wire of each PIR then
feeds into the tamper connector of the controller (thus there is 5 of them)
- this is where I feel my cause of the tamper alert is (since if I remove
all tamper connector wires from the PIR's and ensure the Prog Tamp J1
switch for the controller cover is closed, normal operation occurs and
there is no tamper alarm)

So, I have the tamper wire from 5 PIR's going into the single TAMPer
connector on the controller. As per wiring instructions in the manual, each
of the PIR's has a 2K2 EOL resistor on the tamper wire at the PIR end.

I asked a question a fornight or so ago in aus.electronics about the alarm
installation specifically about the the 2K2 EOL resistors (I didn't know
about them and someone kindly gave me a great post with good information).
In that posting, the person mentioned that there should only be 1(one) 2K2
EOL resistor per zone connector if I was to wire multiple PIR's to a single
zone, and that the PIR with the maximum wire distance should be the one to
have the resistor. Does/should this apply to the tamper connector also? and
thus by having the tamper swicth of 5 PIR's, each with their own resistor,
connected to the tamper connector that is the problem and cause of the
tamper alert? If so, then this doesn't agree with what the alarms
installation manual says/shows, or perhaps I have wired the PIR tamper's to
the wrong connector?

Thanks,
Jason

 

[Unbeliever]

Thanks for help all, but still an issue. (Have removed siren and top-hat
screamer to save my sanity <g>)

Have checked Prog Tamper J1 (opening of cover or removal from wall) and it
appears to working fine. If I hold switch in, no tamper alarm but if I
allow it out, then there's a tamper alarm (This is with all other tamper
wire connectors for the PIR's removed from the controller). If I leave the
switch out or disconnected whilst powering on, then the system goes into
programming mode as it's supposed to.

I have 5 Quantum PIR's using the 6 wire connectors (power and ground, zone
alert and common/ground, tamper and common/ground). Each PIR connected to
it's own zone (1-5) and zone's 6-8 empty but 'completed' with 2K2 EOL
resistors. (one side of resistor in zone connector and other in the
common/ground connector for that zone) The tamper wire of each PIR then
feeds into the tamper connector of the controller (thus there is 5 of them)
- this is where I feel my cause of the tamper alert is (since if I remove
all tamper connector wires from the PIR's and ensure the Prog Tamp J1
switch for the controller cover is closed, normal operation occurs and
there is no tamper alarm)

So, I have the tamper wire from 5 PIR's going into the single TAMPer
connector on the controller. As per wiring instructions in the manual, each
of the PIR's has a 2K2 EOL resistor on the tamper wire at the PIR end.

I asked a question a fornight or so ago in aus.electronics about the alarm
installation specifically about the the 2K2 EOL resistors (I didn't know
about them and someone kindly gave me a great post with good information).
In that posting, the person mentioned that there should only be 1(one) 2K2
EOL resistor per zone connector if I was to wire multiple PIR's to a single
zone, and that the PIR with the maximum wire distance should be the one to
have the resistor. Does/should this apply to the tamper connector also? and
thus by having the tamper swicth of 5 PIR's, each with their own resistor,
connected to the tamper connector that is the problem and cause of the
tamper alert? If so, then this doesn't agree with what the alarms
installation manual says/shows, or perhaps I have wired the PIR tamper's to
the wrong connector?

Thanks,
Jason

Hi Jason,
You've probably got this sorted by now, but you should only have one 2k2
resistor in the TAMP line. If the tamper switches in your PIRs are normally
closed you must put them all in series, with a 2k2 resistor somewhere in the
chain and only have one wire from each end of your chain going into your
panel (one end to TAMP, the other to 0V). If (less likely) the tamper
switches are normally open, you must wire them all in parallel with a single
2k2 resistor across the lot - You'd thus have one end of each tamper switch
and one end of the resistor going to the TAMP input, the other end of each
tamper switch (and the other end of the resistor) go to the 0V terminal.

How to tell if they're normally open or normally closed? Check with a
multimeter across one of the PIR tamper switches when in the "untampered"
position. If the reistance is high (open circuit), it's a normally open
switch that closes when tampered with, if the resistance is low or zero,
it's a normally closed switch that opens when tampered with.

HTH
Alf
[email protected]
www.micromagic.net.au