TRAINING MANUAL CFM56-5B ENGINE SYSTEMS 培训手册 CFM56-5B 发动机系统(86)

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VIBRATION SENSING
EVMU description.
The EVMU, which is located in the aircraft electronic bay, receives analog signals from the engine (speed and vibration), and communicates with the other computers (CFDS, AIDS) through ARINC 429 data busses.
The EVMU performs the following tasks:
-Rotor vibration extraction from the overall vibration signals received.
-Vibration sensor configuration, through CFDS menu. The #1 bearing vibration sensor is the default sensor.
-Computing of position and amplitude of the unbalanced signal. -Communication with the CFDS (CFDIU) in normal and maintenance mode. -Communication with the AIDS (DMU) for vibration monitoring.
-Fan trim balance calculations for the positions and weights of balancing screws to be installed on the engine rear spinner cone (latest EVMU’s only).

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CTC-201-247-01
EFFECTIVITY

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ALL CFM56-5B ENGINES FOR A319-A320-A321
ENGINE SYSTEMS Jan 03

CFMI PROPRIETARY INFORMATION
CFM56-5B TRAINING MANUAL
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VIBRATION SENSING
EVMU operation.

The normal mode of operation allows the system to:
-Display the vibration information on the ECAM.
-Provide fault information when advisory levels are
reached, or exceeded.

-Provide flight recordings.
Vibration recordings are made at five different engine speeds to provide information for fan trim balance procedures and frequency analysis.
They are also transmitted to the AIDS system to be included in the printing of all the reports, such as cruise, or take-off.

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EFFECTIVITY
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ALL CFM56-5B ENGINES FOR A319-A320-A321
ENGINE SYSTEMS Jan 03

CFMI PROPRIETARY INFORMATION
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