Specifications

Castle Care-Tech Ltd. Engineering
Page 11 - 6 Chapter 11
F: iD Wiring
Castle Care-Tech Ltd. is a permitted user of iD.
See wiring specifications on
page 11-2.
System response cannot
be guaranteed if these
specifications are not
followed.
For details of zone numbering,
see page 4-5.
The use of SCREENED cable is
specified to minimise any
problems from RFI, especially
taking into account the lack of
control over any wiring
installed after the alarm system
is commissioned.
iD is NOT a detection system,
but a means of simplifying
wiring by individually
addressing a number of
detectors wired to the control
in parallel.
A small interface, known as a
‘biscuit’ – actually a silicon
microchip - is used to achieve
this, and wires directly into the
terminals of any detector.
Each device has its own
identification number, from 01
to 30, which must NOT be
duplicated on the same
network.
A new network (ie each new
ZEM) has a new sequence of
biscuits starting from 01.
The system polls the devices
continuously for two signals:
a) A diagnostic signal showing
that the device is correctly
connected and functional –
and that the tamper switch
is correctly closed.
b) A signal to report the status
of the detector being
monitored.
The devices wire in any order
and any parallel configuration,
requiring two cores only for
communication plus the supply
for detectors.
It is essential that the
connections are correctly
made, or serious malfunction
of the entire iD network could
result.