Connecting Of Signal Lines - Raytheon 138-119 Operator's And Service Manual

3.2.2 Connecting of the signal lines
The output signal lines of DU 1 are connected to the break contact element of the respect-
ive relay, because of a switching through of the dropped--out relay status.
The output signal lines of DU 2 are connected to the normally open contacts of the relay,
because of lead over from the Change Over Box after switching--over to the activated
switching status.
All relays are activated at the same time (with applying the switch--over voltage).
There is no assignment of the signal lines to the relays.
3769DOC000002
Change Over Box
138- -119
ATTENTION!
While connecting the signal lines it is important to pay attention
that identical signal outputs of the Distribution Units have to be
connected to the same relay.
17
COMPASS
STD22
Edition: April 06, 2005