EAU相关知识梳理

嘟嘟12 · 发表于 2021-12-5 18:36:04

结合SDS.AMM.FIM整理关于EAU的基础知识。如有不足请指正，谢谢！

参考手册
SDS 78-34-00-900 THRUST REVERSER CONTROL SYSTEM - EAU - TRAINING INFORMATION POINT
SDS 78-34-00-008 THRUST REVERSER CONTROL SYSTEM - ENGINE ACCESSORY UNIT (EAU)
AMM 78-31-00-700-804 Thrust Reverser Engine Accessory Unit (EAU) Test
FIM 78-31 TASK 801 Engine Accessory Unit (EAU) BITE Procedure

EAU（Engine Accessory Unit）
位置：电子舱  E3-2 设备号M528    件号：258A1300

EAU功能
The engine accessory unit (EAU) has these functions:
Controls the thrust reverser (T/R) auto-restow operation
Helps you do trouble-shooting of the T/R control system
Controls the REVERSER lights on the P5 aft overhead panel in the flight compartment.

EAU监控部件
The EAU monitors these component inputs from each T/R:
Left and right sleeve stow proximity sensors
Left and right sleeve lock proximity sensors
Hydraulic isolation valve (HIV) position (inside the T/R control valve module)
Directional control valve (DCV) position (inside the T/R control valve module)
Voltage at both sync locks.

发动机反推收放故障灯概述
The T/R DEPLOY FAULTS light comes on if a fault happens during a deploy operation. The T/R STOW FAULTS light comes on if a fault happens during a stow operation or after a stow operation. Both lights are red.

EAU记录
The EAU keeps faults in memory for the last five DEPLOY and STOW cycles. All of the data is shown together, and all of the data is cleared when the EAU is reset.

驾驶舱反推灯
After a STOW Fault is corrected, the REVERSER Fault Light on the Flight Compartment P5-68 Panel will go OFF. However, the T/R STOW FAULTS Light will stay ON until the EAU is reset.

After a DEPLOY Fault is corrected, the REVERSER Fault Light on the Flight Compartment P5-68 Panel and the T/R DEPLOY Fault Light will stay ON until the EAU is reset. The T/R must be in the DEPLOY position to reset the DEPLOY Faults in the EAU.

EAU面板
The EAU Front Panel also includes these items for Engine 1 and Engine 2：
T/R STOW FAULTS Light and Switch  (反推收上时故障，灯亮)
T/R DEPLOY FAULTS Light and Switch  (反推收上时故障，灯亮)
FAULT RESET Switch
EAU FAULT Light (EAU 故障时灯亮)

EAU检查
Do these steps to do a check of the EAU for the applicable engine:
Push and hold the T/R STOW FAULTS or the T/R DEPLOY FAULTS button on the EAU.
Make sure that all of the lights come on for one second.
After one second, make sure that all of the lights go out, but the green NO FAULTS DETECTED light.
按压按钮不动，所有灯亮一秒钟，一秒钟后所有灯熄灭，绿色的“无故障”亮，说明EAU时好的。
Release the T/R STOW FAULTS or the T/R DEPLOY FAULTS button
If the red EAU FAULT light stays on, then the check for the EAU failed.Replace the EAU
If other fault lights stay on ,查FIM

REF TO FIM BITE Procedure
If the T/R STOW FAULTS Light is ON, then do these steps to do the EAU BITE Procedure:
Push and hold the T/R STOW FAULTS Switch on the EAU for the applicable engine.
Record the maintenance messages that are related to the lights.
Release the T/R STOW FAULTS Switch.

Do these steps to show the current maintenance messages.
Push and hold the FAULT RESET button for a minimum of two seconds.
Wait for at least 30 seconds.
Record the current maintenance messages.
如果当前EAU上没有故障信息，绿色灯亮，则reset succeed，再收放反推后正常，则系统正常。
上面举例T/R STOW FAULTS Light，T/R DEPLOY FAULTS Light 类似。
特别注意：T/R DEPLOY FAULTS Light ：make sure that the Reverse Thrust Lever stays in the EXTEND (DEPLOY) position to reset the EAU.

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机务大神 · 发表于 2021-12-5 21:48:04

关键点在于
1故障代码按压后要记录拍照，后根据FIM排故，直接删除就看不到了
2代码收上收上清，放出放出清
3note写了测试完别走，等待15s看看是否又红灯点亮
4反推功能测试要严格按照手册，拔跳开关，启动电门放连续位

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zxl413044840 · 发表于 2021-12-5 22:45:20

机务大神发表于 2021-12-05 21:48
关键点在于  
1故障代码按压后要记录拍照，后根据FIM排故，直接删除就看不到了
2代码收上收上清，放出放出清
3note写了测试完别走，等待15s看看是否又红灯点亮
4反推功能测试要严格按照手册，拔跳开关，启动电门放连续位

收上的代码不要求要收上才能清吧

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嘟嘟12 · 发表于 2021-12-6 12:26:54

机务大神发表于 2021-12-05 21:48
关键点在于  
1故障代码按压后要记录拍照，后根据FIM排故，直接删除就看不到了
2代码收上收上清，放出放出清
3note写了测试完别走，等待15s看看是否又红灯点亮
4反推功能测试要严格按照手册，拔跳开关，启动电门放连续位

谢谢！程序有说要等30s

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嘟嘟12 · 发表于 2021-12-6 12:27:37

zxl413044840 发表于 2021-12-05 22:45
收上的代码不要求要收上才能清吧

收上代码应该是没有要求的

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萨满 · 发表于 2021-12-6 21:56:16

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[78反推] EAU相关知识梳理