Cerberus
Lavatory and Crew Rest Smoke
Detection System
KTA 2400
D Overview
This system has been designed to meet the FAA Rule 14 CFR -- Part 121 -- Airplane
Cabin Fire Protection and similar regulations in countries outside of the USA.
The KTA 2400 System is QAC 101 (DGAC), AR--514 (CAA) and TSOC1C (FAA)
approved and was certified as BFE equipment by Boeing and Mc Donnell Douglas
for B737, B747--400 and MD11 aircraft respectively.
Each toilet compartment is fitted with an optical smoke detector installed on the ceiling and connected to a control panel generally located in the galley area.
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Three types of control panels are available:
TRA 72--20 with up to 2 channels (2 detectors).
TRA 72--60 and TRA 73--60 with up to 6 channels (6 detectors).
All these types use the aircraft 28VDC. They are fitted with 2 to 6 alarm indicator
lamps, 1 audible alarm (buzzer), 3 pushbuttons:
1 for test of the entire system,
1 for audible alarm cancellation and 1 for reset.
Also two 28V/1A alarm outputs are provided on each panel to monitor devices such
as cabin attendant call system, a remote lamp in the flight deck, etc.
Two Types of Smoke Detectors can be used:
FTA 719--01 without provision for a response indicator or FTA 720--01 with provision for
a response indicator to be fitted outside the toilet above the door.
Both detectors are of the latest generation of optical smoke detectors which introduce
the latest technologies in photo--optics and ensure significant reduction of false alarms
and enhanced smoke detection.
They are installed in the ceiling of each toilet (one detector per toilet).
Key features
-- The Control Panel is separated from the Smoke Detectors. Hence it can be mounted
at any suitable remote location in the aircraft. Most likely in the galley area.
-- A complete functional test of the system and its connections can be performed with
simple Push to Test button on the Control Panel.
-- Clear indication of the alarm / fault locations on the Control Panel.
-- The Control Panel is provided with an Alarm Horn (90dB at 1 meter) and a Horn Off
Pushbutton.
-- Two Alarm outputs are available, one flashing and one steady.
-- Cigarette smokers detection.
-- Possibility to connect a remote light indicator which may be placed on the outside of
the Lavatory / Crew Rest door.
-- New generation optical type smoke detectors.
-- The KTA 2400 is certified FAA TSOC1C for all civil aircraft types applications.
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Smoke detection principle
LATEST TECHNOLOGIES IN
PHOTO--OPTICS AND OPTIMISED
LABYRINTH TO AVOID FALSE
ALARMS.
System schematic
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TRA 72--60 -- TRA 73--60
6 Channels / 6 Canaux
TRA 72--20
2 Channels / 2 Canaux
6 screws on dia.
123 at 60G angle
DJ1191
FTA 719--01
FTA 720--01
Dimensions in mm
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System characteristics
Physical Characteristics
Electrical Characteristics
Dimensions: see figure
Weight
Control Panel
P/N TRA72--20/21
P/N TRA72--60/61
P/N TRA73--60
380g (0.844lbs)
530g (1.177lbs)
Smoke Detectors
P/N FTA719--01
P/N FTA720--01
265g (0.590lbs)
265g (0.590lbs)
Remote Indicator
P/N DJ1191
40g (0.088lbs)
Power Supply voltage
Control Panel
Aircraft 28VDC (22 to 32 V)
Smoke Detectors
18 to 22VDC supplied by the Control Panel
to each detector
Remote Indicator
6 VDC supplied by Smoke Detector
P/N FTA720--01
Alarm Signals
P/N TRA72--20/21 & P/N TRA72--60/61
-- Steady Alarm Output
-- Flashing Alarm Output
28V / 1A
28V / 1A (Reset when the “horn off” button is
depressed)
-- Chime and light indicators
P/N TRA73--60
Environmental
Characteristics
Conform to RTCADO160B
(Specific to A330 & A340 Lower Deck Movable
Crew Rest)
-- SMOKE Output
-- DO NOT OPEN HATCH Output
-- PTT LD--MCR (Test Signal) Output
GND / OC -- 100 mA (to SDCU)
28V / OC -- 1A
GND / OC --100 mA (to SDCU)
Normal Operating Temperature
--15G C + 55G C (+5G F to 131G F)
Ground Survival Temperature
--55G C to + 85G C (--67G F to 188G F)
Normal Operating Pressure
750 to 1059 mbar (10.882 to 15.217 psi)
Humidity
95% at 50G C for 6 hours
85% at 38G C for 16 hours
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Imp. GRAPH 2000 -- Design CL Com
Subject to change
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Fire
Safety no. 094530 -- Ind. B
Document
Siemens Building Technologies Group
Edition 05.2003
E Siemens Building Technologies