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-CREW OXYGEN PRESSURE
T552 LOWER CREW OXYGEN PRESSURE TRANSDUCER (STA 680)
M7353 L-EIU (E2-6) T470 UPPER CREW OXYGEN PRESSURE TRANSDUCER (STA 620)
-CREW OXYGEN PRESSURE
M7352 C-EIU (E2-6)
-PASSENGER OXYGEN ON
-PASSENGER OXYGEN PRESSURE
M984 PASSENGER OXYGEN VOLTAGE
AVERAGING MODULE (STA 740) M7351 R-EIU
(E2-6)
Oxygen System Interface
Figure 72
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S211, S212, S213, S214 ENGINE 1,2,3,4 FIRE CUTOFF SWITCHES (P5)
S1626, S1627, S1628, S1629 ENGINE 1,2,3,4 COWL OVERHEAT TEMP SWITCHES (ENGINE)
M7906 LOWER CARGO COMPT F/EXT BOTTLE A (STA 950)
M7907 LOWER CARGO COMPT F/EXT BOTTLE B (STA 930)
M7908 LOWER CARGO COMPT F/EXT BOTTLE C (STA 910)
M6742 LOWER CARGO COMPT F/EXT BOTTLE D (STA 890)
M7819, M7820, M7821, M7822, M7825, M7826, M7827, M7828, M7829, M7830, M7842, M7843, M7844, M7845, BS1, BS3, CS1, CS2, DS1, DS2, FC1, FC2, FC3, FC4, DS3, DS4, 4U, 6U
-LAVATORY SMOKE DETECTION MODULE
M7420, M7421 DOOR 5 CREW REST SMOKE DETECTION (STA 2250, 2350)
M103 APU EXTINGUISH BOTTLE (STA 2645)
M230, M231 RIGHT FIRE EXTINGUISH BOTTLE A,B (ENGINE)
M228, M229 LEFT FIRE EXTINGUISH BOTTLE A,B (ENGINE)
R7419 R-DUCT LEAK RELAY (P415)
R7420 L-DUCT LEAK RELAY (P415)
M826 FIRE DETECTION CARD FILE
-ENG 1,2,3,4 FIRE/ENG 1,2,3,4 OVERHEAT SYS FAIL
-ENGINE 1,2,3,4 OVERHEAT
-ENGINE 1,2,3,4 FIRE
-ENGINE 1,2,3,4 TURBINE OVERHEAT
-APU DUCT OVERHEAT
-APU FIRE SYSTEM FAIL
-APU FIRE ALARM
-AFT CARGO FIRE ZONE 3,4
-AFT CARGO SMOKE SYSTEM FAIL
-FORWARD CARGO FIRE ZONE 1,2
-FORWARD CARGO SMOKE SYSTEM FAIL
-WHEEL WELL FIRE
SAME INPUTS AS L-EIU
SAME INPUTS AS L-EIU M7353 L-EIU (E2-6)
M7352 C-EIU (E2-6)
M7351 R-EIU (E2-6)
Fire Protection System Interface
Figure 73
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M. Ice/Rain Protection System Interface (Fig. 74)
(1)
Digital discretes are received by the EIUs on ARINC 429 data buses from the Window Heat Control Units (WHCU). This data is processed by EIUs for the generation of EICAS crew alerting and status messages.
(2)
Analog data is received by the EIUs as direct analog inputs. This data is processed by the EIUs for display on the EICAS primary and compacted formats, and the EICAS ECS synoptic format.
(3)
The data obtained from the interface is also processed by the EIUs for the generation of EICAS crew alerting and status messages.
N. Auxiliary Power Unit (APU) Interface (Fig. 75)
(1)
Digital inputs are received by the EIUs on an ARINC 429 data bus from the APU controller (APUCTL).
(2)
Data for APU EGT, N1, N2, and oil quantity is processed by the EIUs for display on the EICAS status format.
O. Weight and Balance Computer (WBC) Interface (Fig. 76)
(1) Digital discrete data from the Weight and Balance Computer (WBC) is received by the EIUs on an ARINC 429 data bus. This data is processed by the EIUs for the generation of EICAS crew alerting and status messages.
16. Miscellaneous Interfaces
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