Schematic of the Passenger/Crew Doors and Emergency Exits
Figure 005A
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CABIN PRESSURE Warning Light Panel
Figure 006
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R (Ref. Fig. 006A)
R **ON A/C ALL
(1) Each CABIN PRESSURE warning light panel gets the following data :
-Slide disarmed. This data corresponds to a logic 1.
-Oil pressure drop on one of the 2 engines or on the 2 engines. If one of the 2 engines or the 2 engines are shut down, 2 in-parallel contactors send a signal to the CABIN PRESSURE warning-light panel and relays 18WN1 and 18WN2 are de-energized.
-Overpressure indication from the cabin-pressure detection pressure switch 14WN. When the passenger cabin overpressure is greater than 2.5mb, a ground signal is sent to the CABIN PRESSURE warning-light panel. This signal is delayed 5 seconds to prevent any unwanted warning. When these 3 data are present simultaneously, the CABIN PRESSURE warning-light panel flashes.
4. Power Supply
____________
A. Emergency Escape Slide Warning The circuit which indicates that the escape slide is armed gets its supply :
-from the battery busbar 301PP
- or when this busbar is no longer supplied, from the hot busbar 702PP which in this case warns the maintenance or other teams.
B. Overpressure Warning
(1) The CABIN PRESSURE warning-light panels are supplied through the SLIDE ARMED indicator lights, from the battery busbar 301 or the hot bus bar 702PP.
5. Component Description
_____________________
A. Emergency Escape Slide Warning
(1) Circuit breakers (13WN, 15WN) The two circuit breakers are monitored. They enable supply of the circuit with 28VDC and are installed on the panel 121VU.
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R CABIN PRESSURE Warning Light Panel
R Figure 006A
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1 1
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(2)
Relay (12WN) This relay is installed in the panel 103VU. It enables power supply changeover from the battery busbar to the hot busbar. It is supplied by the battery busbar.
(3)
SLIDE ARMED indicator lights (1WN1, 1WN2, 2WN2, 2WN1, 3WN1, 3WN2)
R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,
(Ref. Fig. 007)
**ON A/C 301-399,
(Ref. Fig. 007A)
**ON A/C ALL
They warn any person who tries to open a door with the escape slide
in the armed configuration.
The bus bars 301PP or 702PP supply continuously the electronic system
of these indicator lights.
The consumption (with the lamps off) of each indicator light is less
than 10mA.
These indicator lights include:
-1 relay which supplies the proximity switches: either with 6VDC (relay energized) from the batteries of the WL circuit or with 28VDC (relay de-energized) from the battery or the hot busbars
-terminals which are used to: send data to the ECAM system supply the other indicator lights send slide disarmed data to the CABIN PRESSURE warning-light panels.
**ON A/C 001-049, 051-099, 101-149, 201-299,
(4) Proximity switches (4WN1, 4WN2, 13WV1, 13WV2, 5WN1, 5WN2, 19WV1, 19WV2, 6WN1, 6WN2, 21WV1, 21WV2, 7WN1, 7WN2, 17WV1, 17WV2). (Ref. 52-71-00)
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SLIDE ARMED Indicator Light
Figure 007
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