R --------------------------------------------------------------
R For any cell, if there are greater than 2 pairs of probes with an R invalid capacitance (except for pairs 2-4 and 3-4 in the center R tank), then that cell shall be set to failed. R R FQIC Signal Conditioner Failure R If there are greater than 20 probes with an invalid capacitance in R all cells, then the Signal Conditioner that these connect to is R considered to have failed. The failure status is set to Degraded. R R Fuel Offset Errors
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 301-399, ∞∞28-42-00∞∞∞∞∞∞∞∞∞∞Page 334
May 01/04 CESR NOTE : The fuel offset value (A) is a fuel characteristic dependent
____ R on density and permittivity.
R If the cell fractional volume is greater than 15% then the calculated R Fuel Offset will be given a status which will be dependent on the R Dielectric Computation status and the Fuel Offset status. The Fuel R Offset status is determined as shown in the table that follows:
R --------------------------------------------------------------R | Fuel Offset Status | R |--------------------------------------------------------------| R | Status Inputs | Output Status | R |-----------------------------------------|--------------------| R | Fuel Offset(1) | Dielectric Computation | Fuel Offset Status | R |----------------|------------------------|--------------------|
R | Measured | High | Normal |
R | Measured | Inferred | Normal |
R | Measured | Default | Normal |
R | Default | High | Normal |
R | Default | Inferred | Normal |
R | Default | Default | Degraded |
R | | | |
R --------------------------------------------------------------
R NOTE : The Fuel Dielectric Grades are as follows:
____
R - High - at least one value measured and validated
R - Inferred - measured values not validated, value computed
R from measured temperature
R - Default - cannot be determined, set to a default value.
R
R If the cell fractional volume is less than 15% then the Fuel
R Offset Status is set to Normal
R R Final Tank Grades R The grades for the Left, Right, and Center tanks are calculated as R follows: R - the grade for each tank will be updated to Degraded if the Signal R Conditioner failure Status is Degraded or if the Fuel Offset Status R is Degraded when a tank was previously at Normal, otherwise no R change is made R - the grade obtained from the Double Probe Failure calculation R overrides the others when it is the lowest. R R The total fuel grade is set to the lowest grade of any tank (cell) R fitted.
R (7) FLSS STATUS R The selection of the FLSS STATUS gives the results of the last FLSS R BITE test. See R (Ref. Fig. 307) R Each part of the BITE test has three possible results:
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 301-399, ∞∞28-42-00∞∞∞∞∞∞∞∞∞∞Page 335
May 01/04 CESR CFDS(FUEL) - INPUT PARAMETERS, Page 3 (FQIS DISCRETE INPUTS) R Figure 306A
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 301-399, ∞∞28-42-00∞∞∞∞∞∞∞∞∞∞Page 336
May 01/04 CESR FLSS Status - BITE Test Results and Group Test Identification Cross Reference R Figure 307
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 301-399, ∞∞28-42-00∞∞∞∞∞∞∞∞∞∞Page 337
May 01/04 CES
R - P = PASSED
R - F = FAILED
R - * = PREVIOUS RESULT. This part of the BITE test was not carried out
R as the correct conditions did not exsist. The result given is that
R from a previous BITE when the conditions for that part of the BITE
R were correct and the test was performed.
R If any of the BITE tests has FAILED, then the more-to-come symbol (an
R arrow) will be shown. Selection of the NEXT PAGE will cause a list of
R defective FLSS LRUs to be shown. See
R (Ref. Fig. 308)
R
R All FLSS LRUs failure classes are reported.
R
R Each failed LRU is identified by its:
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本文鏈接地址：A320 Trouble Shooting Manual 排故手冊(cè) FUEL 燃油4(24)
