TRAINING MANUAL CFM56-5B FAULT DETECTION & ANNUNCIATION 培训手册 CFM56-5B 故障探测与指示(17)

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T25. T12. T3.
TEO. TECU.
N1 and N2 signals.
Dual power :  Engine alternator.
 
When the signal is less critical, only one source sends a signal, which is connected to both channels.
Shared inputs :
EGT.
T Case.
Fuel flowmeter. HMU OSG switch. ID plug inputs.
Non-critical control inputs are only sent to one channel.
Single inputs :
PS13 to channel A (PMUX option). T5 to channel A (PMUX option). P25 to channel B (PMUX option).
 

EFFECTIVITY
ALL CFM56-5B ENGINES FOR A319-A320-A321
CFMI PROPRIETARY INFORMATION ECU SIGNALS
FAULT DETECTION
& ANNUNCIATION Page 8
Nov 02
  
 
SINGLE
PS13 (PMUX) T5 (PMUX)

SHARED
EGT
TC
FUEL FLOWMETER HMU OSG SW
ID PLUG

SINGLE
P25 (PMUX)

EFFECTIVITY
ALL CFM56-5B ENGINES FOR A319-A320-A321
CFMI PROPRIETARY INFORMATION ECU SIGNALS
FAULT DETECTION
& ANNUNCIATION Page 9
Nov 02
  
 
  CFM56-5B TRAINING MANUAL

 
ECU INPUTS
Identification plug parameters.
The engine identification (ID) plug provides the ECU with engine configuration information. It is plugged into connector J14 on the ECU and attached to the fan case by a metal strap. It remains with the engine even after ECU replacement.
It consists of a plug connector and a coding circuit. The coding circuit is welded to the plug connector pins and is equipped with fuse and push-pull links, which are used to ensure, or prohibit connection between the different plug connector pins.
 
Fuse links.
The fuse links are configured at production and cannot be changed. They are used to define engine thrust parameters :
- Rating.
- Bump.
- Plug type.
Push-pull links.
The push pull links are made by a switch mechanism located between two contacts. These links can be manually opened, or closed, according to requirements. These links are configured at the time of installation on the aircraft and define :
- Engine configuration : -5B, or 5B/P.
- System configuration : SAC, DAC.
- Trim level : 0 to 7.
- Monitoring parameters : With, or without PMUX. - Tool : Engine serial number programming tool.
- EGT monitoring : EGT monitoring selection.
 

EFFECTIVITY
ALL CFM56-5B ENGINES FOR A319-A320-A321
CFMI PROPRIETARY INFORMATION ECU SIGNALS
FAULT DETECTION
& ANNUNCIATION Page 10
Nov 02
  
 

 
  CFM56-5B TRAINING MANUAL

 
AIRCRAFT TO ECU INPUTS
The aircraft provides the electrical power supplies for the ECU and also the ignition system.
The aircraft normal and emergency buses supply the ECU with 28Vdc, through the EIU.
　
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