R 1EFF : 001-049, 051-099, 101-105, 151-199, 1 32-46-00Page 1 1201-220, 301-399, 1Config-1 May 01/05 1 1 1CES 1
BITE System - Specifications
Figure 001
R 1EFF : 001-049, 051-099, 101-105, 151-199, 1 32-46-00Page 2 1201-220, 301-399, 1Config-1 May 01/05 1 1 1CES 1
-
the functional test of the braking system,
-
the functional test of the nosewheel steering system.
(1)
Functional test of the braking system.
(Ref. Fig. 002)
The test is performed as indicated below:
-functional test of the braking on the engaged system,
-transfer of the system 2 after dialogue by the discretes reserved to the test,
-functional test of the braking on the engaged system.
(2)
Functional test of the nosewheel steering
(Ref. Fig. 003)
The test is performed as indicated below:
-functional test of N/W steering SYS 2,
-SYS 1 return,
-functional test of N/W steering SYS 1 until touchdown of the main gear wheels.
C. BSCU Internal Monitoring Devices A procedure that monitors the microprocessor activity is installed on each microprocessor board and called hardware watchdog. The software sequencing is also monitored by a software watchdog.
D. Dialogue with the Centralized Fault Display System (CFDS). At a line stop, the Centralized Fault Display System permits to check most of the aircraft systems from the cockpit. The electronic functions of the BSCU are designed as BITE systems, i.e. they are capable of a certain self-diagnosis. The CFDS includes: (Ref. Fig. 004)
-
a Centralized Fault Display and Interface Unit (CFDIU) which ensures the junction with the BITE of each system and manages the display of messages,
-
a Multifunction Control and Display Unit (MCDU),
The BSCU is connected to the CFDS by a bi-directional ARINC 429 link
(type 1 system).
The type 1 system comprises one ARINC 429 bus input and output which
enables bi-directional dialogue.
(Ref. Fig. 004)
The system has the capability to memorize data which concern the faults
detected over a maximum of 64 flights.
The system BITE comprises non volatile memory zones (EEPROM of BSCU).
This link permits to transmit the failure messages in 2 operating modes:
- operation in the Normal mode,
- operation in the Menu mode.
R 1EFF : 001-049, 051-099, 101-105, 151-199, 1 32-46-00Page 3 1201-220, 301-399, 1Config-1 May 01/05 1 1 1CES 1
Braking - Functional Test
Figure 002
R 1EFF : 001-049, 051-099, 101-105, 151-199, 1 32-46-00Page 4 1201-220, 301-399, 1Config-1 May 01/05 1 1 1CES 1
N/W Steering Functional Test - Chronogram
Figure 003
R 1EFF : 001-049, 051-099, 101-105, 151-199, 1 32-46-00Page 5 1201-220, 301-399, 1Config-1 May 01/05 1 1 1CES 1
CFDIU/BSCU Interface
Figure 004
R 1EFF : 001-049, 051-099, 101-105, 151-199, 1 32-46-00Page 6 1201-220, 301-399, 1Config-1 May 01/05 1 1 1CES 1
(1) Operation in the Normal mode (Ref. Fig. 005) During a flight, as soon as a failure is detected by the BITE of the BSCU, it is sent to the CFDIU. These failures are sent in plain english in accordance with the ISO 5 encoding, through the ARINC 429 link, under the label 356.
R 1EFF : 001-049, 051-099, 101-105, 151-199, 1 32-46-00Page 7 1201-220, 301-399, 1Config-1 May 01/05 1 1 1CES 1
Fault Messages - Text Transmissions to the CFDS (Label 356) from the BSCU
Figure 005 (SHEET 1)
R 1EFF : 001-049, 051-099, 101-105, 151-199, 1 32-46-00Page 8 1201-220, 301-399, 1Config-1 May 01/05 1 1 1CES 1
Fault Messages - Text Transmissions to the CFDS (Label 356) from the BSCU
Figure 005 (SHEET 2)
R 1EFF : 001-049, 051-099, 101-105, 151-199, 1 32-46-00Page 9 1201-220, 301-399, 1Config-1 May 01/05 1 1 1CES 1
Fault Messages - Text Transmissions to the CFDS (Label 356) from the BSCU
Figure 005 (SHEET 3)
R 1EFF : 001-049, 051-099, 101-105, 151-199, 1 32-46-00Page 10 1201-220, 301-399, 1Config-1 May 01/05 1 1 1CES 1
Fault Messages - Text Transmissions to the CFDS (Label 356) from the BSCU
Figure 005 (SHEET 4)
R 1EFF : 001-049, 051-099, 101-105, 151-199, 1 32-46-00Page 11 1201-220, 301-399, 1Config-1 May 01/05 1 1 1CES 1
Fault Messages - Text Transmissions to the CFDS (Label 356) from the BSCU
Figure 005 (SHEET 5)
R 1EFF : 001-049, 051-099, 101-105, 151-199, 1 32-46-00Page 12 1201-220, 301-399, 1Config-1 May 01/05 1 1 1CES 1R
(2) Transmission in the Menu mode
中國航空網 www.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：A320飛機維護手冊 AMM LANDING GEAR 起落架8(6)
