Specifications

Castle Care-Tech Ltd. Engineering
Page 11 - 8 Chapter 11
HINT: It will be found beneficial
for subsequent maintenance and
faultfinding purposes, to have a
simple record of the cable layout
and biscuit order available, eg:
iD JUNCTION BOX TYPES:
T
Basic junction box for
extending cables, spurring,
etc.
IL
The ‘IL’ type junction box
is now OBSOLETE.
DP
Provides double pole circuit
to interface to window foil,
or other detectors that
cannot be located close to
the biscuit, for multiple
contacts connected to the
same biscuit, etc.
NOTE: The original ‘DP’
Junction box was designed
for 24 Hour tamper, and
similar circuits only, and
does NOT separately
identify a tamper circuit.
This can be distinguished by
having a socket for a ‘plug-
in’ biscuit – the new type,
with correctly identified
tamper circuit, has
terminals for a ‘wired’
biscuit.
Reminders for successful
installation of an iD system:
1. Ensure that all biscuits are
correctly connected
2. Ensure that safe wiring
distances are not exceeded
and cable runs are correctly
terminated.
3. Ensure that all biscuits are
wired directly to the
detector
4. Ensure that cabling
specifications are carefully
followed (see page 11-2).
5. Ensure that the resistance
measurements are correctly
checked and recorded (see
next page).
Castle Care-Tech
Ltd. cannot be held
responsible for
problems arising
from failure to
follow these
specifications.
NOTE: When a Zone Expander
is used in iD mode, it is essential
that it be plugged onto an
Intelligent Power Supply, unless
used within 10 metres of the End
Station (or other power supply).