AC voltage measurements where the measurement range is between 0 and 160VRMS. Between 10 and 160V, the transmitted value is proportional to the voltage. A failure warning coded SSM, bits (30,31)=(0,0) indicates the absence of an AC input voltage and an offset voltage of less than -10V.
J. Frequencies
The same input terminal as high level AC is used. On the output label, the frequency is transmitted when it is between 300 and 500Hz for a voltage between 80 and 200V. When the input voltage is less than 80V, zero is transmitted.
K. Resistances
The parameters to be transmitted are temperatures. The measurement range is between 68.27 and 242.70 ohms. An NCD coded SSM, bits (30,31)=(1,0) on the output labels corresponding to these parameters, indicates an open circuit on the input or a short-circuit.
L. Power Supplies and Miscellaneous
Power supply for concentrator and pins dedicated to maintenance.
3. Interface_________ All the input/output signals are given in tabular form in the ECAM System Logic Data (ESLD) (SDAC Signals).
R 1EFF : 001-049, 062-099, 101-149, 151-199, 1 31-54-00Page 4 1201-299, 301-399, 401-499, 1Config-2 Aug 01/05 1 1 1CES 1 CONCENTRATOR - SYSTEM DATA ACQUISITION (SDAC) (1WV1,1WV2)
_________________________________________________________ REMOVAL/INSTALLATION
____________________
TASK 31-55-34-000-001
Removal of the SDAC (1WV1,1WV2)
1.
Reason for the Job
__________________
Self Explanatory
2.
Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------
REFERENCE QTY DESIGNATION
-------------------------------------------------------------------------------
No specific blanking caps
No specific circuit breaker(s) safety clip(s)
No specific access platform 1.6 m (5 ft. 3 in.)
B. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
R 52-41-00-410-002 Close the Avionics Compartment Doors after Access 31-55-34-991-001 Fig. 401
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3. Job Set-up
__________
Subtask 31-55-34-865-050
A. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------FOR 1WV1
49VU SDAC/1 AND 2/28VDC/ESS BUS 12WV F05 49VU SDAC/1/SPLY 3WV F04 49VU SDAC/1/26VAC SYNC/AC ESS BUS 5WV F02 121VU EIS/SDAC/1/BUS1/26VAC SYNC AC 9WV Q04 121VU EIS/SDAC/1/BUS2/26VAC SYNC AC 7WV Q03
FOR 1WV2 49VU SDAC/1 AND 2/28VDC/ESS BUS 12WV F05 49VU SDAC/2/26VAC SYNC/AC ESS BUS 6WV F03
121VU EIS/SDAC/2/SPLY 2WV Q06 121VU EIS/SDAC/2/BUS1/26VAC SYNC AC 10WV Q05 121VU EIS/SDAC/2/BUS2/26VAC SYNC AC 8WV Q02
Subtask 31-55-34-010-050
B. Get Access
(1) Put the access platform in position at the access door 824 in zone
128.
R (2) Open the access door 824 (Ref. TASK 52-41-00-410-002).
4. Procedure
_________
(Ref. Fig. 401/TASK 31-55-34-991-001)
Subtask 31-55-34-020-050
A. Removal of the SDAC
(1)
Loosen the nuts (3) on the front of the rack (2).
(2)
Lower the nuts (3).
(3)
Pull the SDAC (5) on its rack (2) to disconnect the electrical connectors (1).
(4)
Remove the SDAC (5) from its rack (2).
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System Data Acquisition Concentrator (SDAC)
Figure 401/TASK 31-55-34-991-001
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1 1 Feb 01/98
1 1
1CES 1
(5) Put blanking caps on the disconnected electrical connectors (1).
1EFF : ALL 1 31-55-34Page 404 1 1 Feb 01/98 1 1 1CES 1 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：A320飞机维护手册 AMM 指示/记录系统 6(165)
