CFM56-5B TRAINING MANUAL

 
FADEC INTERFACES
Each ECU interfaces with the aircraft systems, through its corresponding EIU. Each EIU is an interface concentrator, which collects information to be used by the ECU from various aircraft systems and also sends information from the engines to the aircraft systems.
The EVMU receives analog signals from the engine speed and vibration sensors for vibration monitoring and recording.
The ECU entirely supervises the thrust reverser operation. In case of malfunction, the reverser doors are commanded stowed (LGCIU, HCU).
The ADIRS sends air data parameters to the ECU for power management and engine control.
The ECU manages power according to 2 thrust modes : - Manual mode, depending on Throttle Lever Angle. - Autothrust mode, according to the autothrust
function generated by the Auto-Flight System
(AFS).
The FMGC computes the autothrust order and sends it to the ECU, via the FCU and EIU. The FCU is the interface for transmission of engine data from the FMGC to the EIU. Thrust limit computation is performed by the ECU, except if the alpha floor protection is activated.
EFFECTIVITY
ALL CFM56-5B ENGINES FOR A319-A320-A321
CFMI PROPRIETARY INFORMATION
 
 
CFM56-5B TRAINING MANUAL

 
CONTROL
/ MONITOR
SENSORS
 

 
OIL QTY
OIL PRESS TX
OIL LO PRESS SW
 

CTC-231-008-00 FADEC INTERFACES

EFFECTIVITY
ALL CFM56-5B ENGINES FOR A319-A320-A321
CFMI PROPRIETARY INFORMATION INTERFACES
FAULT DETECTION
& ANNUNCIATION Page 5
Nov 02
  
 
  CFM56-5B TRAINING MANUAL

 
FADEC INTERFACES
The FADEC system is closely integrated into the aircraft ECAM system to provide cockpit fault indication and warnings.
Propulsion system survey parameters are directly displayed on dedicated Engine Warning and System Displays.
Information contained on the ECU output buses includes: - Engine rating parameter information.
- Parameters used for engine control.
- FADEC system maintenance data.
- Engine condition monitoring parameters.
- ECU status and fault information.
- Propulsion system status and fault information.
This data is sent to :
- The EIU for use in the aircraft systems logic and transmission to the DMU (AIDS).
- The FWC for fault warning messages.
- The DMC for parameter displays.
 
The ECAM monitors operational data in order to display warnings and system information. FADEC system data is processed by the SDAC’s, FWC’s and DMC’s before being presented on the ECAM Engine Warning Display (EWD) and System Display (SD).
The EWD is dedicated to the primary engine parameters and engine warning messages. The SD is dedicated to the propulsion system parameters when the engine system page is called either automatically, or manually.
　
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