DOC AIRBUS | AMM A320FCONTROL AND INDICATING SYSTEM - DESCRIPTION AND OPERATION
** ON A/C NOT FOR ALL
1. Starter
The starting control signals are acquired by the FADEC Engine Electronic Control (EEC) from the ENG panel (115VU), and the overhead panel via the EIU.
** ON A/C NOT FOR ALL The starting control signals are acquired by the FADEC Engine Electronic Control (EEC) from the ENG panel (115VU), and the overhead panel via the EIU.
Ignition and Starting System Engine 12. Component Description
(See chapter 74-30, para. 2).
** ON A/C NOT FOR ALL (See chapter 74-30, para. 2).
3. Operation
A. The ENG panel initial configuration is: FIN: 115-VU
- ENG/MODE selector switch in NORM position
- both MASTER control switches in OFF position.
(1) Engine dry cranking.
(2) Engine wet motoring.
(3) Engine starting (manual and automatic)
B. Start interruption
The interruption of automatic starting can be achieved if:
The interruption of automatic starting can be achieved if:
(1) You place the MASTER control switch back to OFF. This causes:
- the direct closure of the HP fuel SOV
- the starter pneumatic valve closure via the EEC
- the ignition exciters de-energization.
(a) The EEC aborts the starting sequence in case of detected incident:
- valve failure
- HP fuel SOV failure
- hot start
- stall
- overspeed.
(2) The monitoring of an engine start is described in 73-20-00.
C. Alternate Engine Start Sequence
The alternate start procedure is achieved by a dedicated logic module in the EEC which allows separate control of:
The alternate start procedure is achieved by a dedicated logic module in the EEC which allows separate control of:
- the pneumatic starter valve through ENG/MODE selector switch positioning and MAN START pushbutton switch
- the HP fuel SOV through the MASTER control switch.
(1) ENG panel initial configuration
(a) Selector in NORM position
(b) Both MASTER control switches in OFF position
(c) Both MAN START pushbutton switches released
(d) Engine not running
(2) Manual start of engine 1:
(a) ENG/MODE selector switch in IGN/START position
(b) ENG/MAN START/1 pushbutton switch pushed, ON legend comes on (engine 1 EEC opens engine 1 starter pneumatic valve) and an automatic dry crank sequence of 30 seconds is performed .
(c) Then, the MASTER 1 control switch is placed in ON position (the EEC opens the engine 1 HP fuel shut off valve and energizes the ignition exciters).
(3) Manual start of engine 2
(a) ENG/MODE selector switch in IGN/START position
(b) ENG/MAN START/2 pushbutton switch pushed, ON legend comes on (engine 2 EEC opens engine 2 starter pneumatic valve).
(c) Then, the MASTER 2 control switch is placed in ON position (the EEC opens the engine 2 HP fuel shut off valve and energizes the ignition exciters).
When both engines are running, ENG/MODE selector switch must be placed in NORM position and MAN START pushbutton switches released.
When both engines are running, ENG/MODE selector switch must be placed in NORM position and MAN START pushbutton switches released.
NOTE: If ENG/MODE selector switch is placed in NORM position after engine 1 starting and then back to IGN/START position prior to engine 2 starting, the continuous ignition is automatically selected on engine 1.
The MASTER control switch in ON position or the MAIN START pushbutton switch pushed (ON selected) with the ENG/MODE selector switch in NORM position has no effect on the corresponding engine (if it is not running).
The MASTER control switch in ON position or the MAIN START pushbutton switch pushed (ON selected) with the ENG/MODE selector switch in NORM position has no effect on the corresponding engine (if it is not running).
(4) Interruption of the alternate start procedure is obtained:
(a) before the MASTER control switch is set to ON, by switching the MAN START pushbutton switch to OFF.
(b) after the MASTER control switch is set to ON, by switching first the MAN START pushbutton switch to OFF and then the MASTER control switch to OFF.
D. Engine Relight
The automatic and alternate start procedures are both available for engine relight with the same procedure as on the ground.
The automatic and alternate start procedures are both available for engine relight with the same procedure as on the ground.
(1) When the automatic start is selected in flight, the EEC identifies windmilling or starter-assisted relight conditions according to flight environmental parameters or engine parameters.
(2) When the alternate start is selected in flight the EEC always commands a starter assisted relight.
(3) Continuous ignition is selected whenever the selector switch is placed in IGN/START position.
E. Engine Flameout
In case of engine flameout the EEC is designed to:
In case of engine flameout the EEC is designed to:
(1) Detect unscheduled sub-idle engine operation.
(2) Transmit a message for cockpit display indicating a probable flameout condition.
(3) Activate the continuous ignition.
Engine relight following a flameout message is accomplished by manually initiating engine shutdown and relight procedures.
Engine relight following a flameout message is accomplished by manually initiating engine shutdown and relight procedures.
F. Warnings
When a fault occurs during engine start, warning messages appear on the upper ECAM display unit. They warn the crew about the failure and indicate the procedure to perform.
When a fault occurs during engine start, warning messages appear on the upper ECAM display unit. They warn the crew about the failure and indicate the procedure to perform.
| ------------------------------------------------------------------------------- |
| ! FAILURE ! OPERATIONAL CONSEQUENCE ! WARNING/CAUTION MESSAGE ! |
| !-------------------------!-------------------------!-------------------------! |
| ! ! !- ENG1 (2) AUTO START ! |
| ! Starter SOV ! ! FAULT ! |
| ! fails closed ! !- START VALVE NOT OPEN ! |
| ! ! !- XBLEED ... OPEN ! |
| ! ! !- APU BLEED ... OPEN ! |
| ! ! !- ENG MASTER 1 (2) .. OFF! |
| !-------------------------! !-------------------------! |
| ! ! - MASTER CAUT light on !- ENG1 (2) AUTO START ! |
| ! Starter SOV ! ! FAULT ! |
| ! fails open ! - FAULT legend on !- START VALVE NOT CLOSED ! |
| ! ! !- START AIR SUPPLY ... ! |
| ! ! ! ISOL ! |
| ! ! !- ENG MASTER 1 (2) .. OFF! |
| !-------------------------! !-------------------------! |
| ! ! !- ENG1 (2) AUTO START ! |
| ! HP fuel SOV ! ! FAULT ! |
| ! fails closed ! !- HP FUEL VALVE NOT OPEN ! |
| ! ! !- ENG MASTER 1 (2) .. OFF! |
| !-------------------------!-------------------------!-------------------------! |
| ! Engine stall !Increased engine starting!- ENG1 (2) STARTING ! |
| ! during starting ! duration ! RECOVERY IN PROCESS ! |
| !-------------------------!-------------------------!-------------------------! |
| ! Hung start !Increased engine starting!- ENG1 (2) STARTING ! |
| ! ! duration ! RECOVEY IN PROCESS ! |
| !-------------------------!-------------------------!-------------------------! |
| ! ! !- ENG1 (2) AUTO START ! |
| ! High EGT during ! ! FAULT ! |
| ! starting ! !- ENG1 (2) EGT OVERLIMIT ! |
| ! ! !- ENG MASTER 1 (2) .. OFF! |
| !-------------------------! - MASTER CAUT light on !-------------------------! |
| ! ! - FAULT legend on !- ENG1 (2) AUTO START ! |
| ! Engine stall ! - Start abort ! FAULT ! |
| ! during starting ! !- ENG1 (2) STALL ! |
| ! ! !- ENG MASTER 1 (2) .. OFF! |
| !-------------------------! !-------------------------! |
| ! ! !- ENG1 (2) AUTO START ! |
| ! No engine light- ! ! FAULT ! |
| ! off ! !- ENG1 (2) IGNITION FAULT! |
| ! ! !- NEW START IN PROGRESS ! |
| ! ! !- AUTO DRY CRANK PROCESS ! |
| ! ! !- ENG MASTER 1 (2) .. OFF! |
| ------------------------------------------------------------------------------- |