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Conventional detector
Conventional Detector Base (CDB)
Addressable
Conventional zone line input
Output unit
Output / Control output
Short circuit isolator (ISO)
Remote Display Unit (RDU)
COM loop
Control Unit / C.U. / FDCIE
Fire Brigade Panel (FBP)
Control panel (CP)
Nuisance alarms
LED
External Indicator / RIL
Display / LCD
Door open (Door / Key switch)
A detector with only two statuses, i.e. normal or fire alarm. The
detector has a "closing contact" and a series alarm resistor
(560 Ohm). Normally plugged in a conventional detector base
CDB (see below), which is connected to a conventional zone
line input. Some types are water proof types and cannot be
plugged in the standard base, it is connected directly to a zone
line. An end-of-line device has to be connected in the last unit
on the conventional zone line.
A conventional detector is plugged in a CDB, connected to a
conventional zone line input.
A unit with a built-in address device. Each unit is individually
identified, handled and indicated in the FDCIE. (The unit can
be an I/O unit with a zone line input, to which one or more
conventional "alarm points" can be connected.)
Input intended for one or more conventional alarm points. End-
of-line device in the last alarm point on the zone must be fitted.
Addressable unit with programmable control outputs.
Connected to the COM loop (see below).
Defined or programmable function. Relay output or voltage
output (supervised or non-supervised), in the FDCIE or an
output unit connected to the COM loop.
Addressable unit for automatic disconnection of a COM loop
segment (see below) in case of short circuit on the loop. As per
AS1670.1, one isolator is required every 40 alarm points on the
COM loop or every zone.
Addressable unit (RS485 line) for fire alarm presentation
(including user definable alarm text), alert annunciation, etc.
Two types are normally used: External presentation unit 1728
(EPU) and alert annunciation unit 1736 (AAU).
Note: An optional RS485 communication module (chip) must
be fitted in order to interface up to 8 display units (1728 /
1736), end of line resistor must be set via a jumper link on the
last unit. For more information, refer to the technical manual of
1728 and 1736
Loop = twisted pair cable, to which all the addressable units
can be connected. Starts in the FDCIE and returns back to the
FDCIE.
Control Unit = Fire Detection Control and Indicating Equipment
(FDCIE) = Unit to which the alarm points are connected (via
e.g. a COM loop). Indicates on the front fire alarm, fault
conditions, etc.
The fire brigade panel is an integral part of FT128 intended for
fire alarm, fault and disablement presentation, etc. The FBP
compromises the top part of the front display. Intended for fire
alarm presentation and for the fire brigade personnel.
A part of the FT128 front display, intended for the building
occupier / officer, service personnel, etc., to "communicate"
with the Control Unit. It comprises the bottom part of the front
display.
False or unwanted alarms
LED (Light Emitting Diode) = Yellow, green or red optical
indicator ("lamp").
A unit with a red LED connected to a base (ASB / CDB) or a
detector with an output for a remote indicator RIL.
Lit when the built-in LED in the detector / base is lit.
LCD (Liquid Crystal Display) = Display (in the FDCIE or Display
unit) for presentation of fire alarms, fault messages, etc.
Normally alphanumeric characters and backlight.
In FT128 there is a door switch, which is activated when the
FDCIE door is open. Door open feature can be used to disable
9
Operation Manual
FT128 Rev 2.4
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