Raytheon 138-119, Руководство оператора и по обслуживанию

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Change Over Box
138--119
6
3769DOC000002 Edition: April 06, 2005
Caption:
“A”
= Signal “A”
“B” = Signal “B”
“A In1” = Signal “A” at the output “System 1”
“B In2” = Signal “B” at the output “System 2”
“A Out” = switched signal “A”
“B Out” = switched signal “B”
“System Failure” = Failure message of “compass system 1”
NOTE
Some of the relay outputs are led via fuses from the
Change Over Box to the connected receivers.
This fuse protection serves to prevent effects to the
Change Over Box in case of a fault in a connected
heading receiver.
NOTE!
A.m. Figure 4 shows a principle of switch--over
The actual connections are shown in the appended wiring
diagrams.
The switch--over--relays in the Change Over Box are controlled with a switching voltage of
24 V DC. This switching voltage is generated in the Change Over Box, led to the Change
Over Switch.
The operation of the Change Over Box is possible with three different switch positions:
-- Automatic switch--over because of a fail.
-- Manual switch--over to system 1.
-- Manual switch--over to system 2.