46131-0598 <90-00018>
P
AGE
11
W
IRING
CAUTION:
To avoid possible damage to the unit, do not make any
connections to the APU if the power is connected and turned
on.
NOTE:
When cabling to the APU, leave sufficient slack in the cabling
to permit the internal printed circuit board to slide out from
the front panel (refer to Fig. 5). This allows replacement of the
circuit board without having to rewire the connectors.
If the wire bundle extending out one side of the unit is too thick
to permit closing the plastic front cover, divide the wiring so
some of it comes out the right side of the unit and some of it
extends out the left side of the unit.
F
IG
. 5 - W
IRE
S
ERVICE
L
OOP
INSTALLATION
CONTINUED
. . .
Wire Loop
Wire Loop
Extended
for Service
APU MOUNTED IN RACK
OPERATION
MODE
SERVICE
MODE
APU
APU
Rack
Rack
Front
Wire Wrap
Pins
Front
Printed
Circuit
Board
Wire Loop
FRONT VIEW
SIDE VIEW
Wire connectors P1, P2, and P3:
Refer to the Functional Schematic, Fig. 1, if necessary.
1.
Wire connector P1 (refer to Fig. 6) according to Table F and Fig. 7.
Wire P1 to discrete alarm inputs 1-24 (all options) and 33-64 (op-
tions -01 and -21). Wire the inputs to equipment that puts out a
ground signal when there is an alarm. P2 is available for ground
reference.
F
IG
. 6 - C
ONNECTOR
LOCATIONS
FOR
W
IRING
56
55
ALARM
PROCESSING UNIT
46131
GND
-BATT
READOUTS
PUSHBUTTONS
C1
MODEM
FUNCTIONS
RCV
CD
XMT
LV
L
AUXILIARY
FUNCTIONS
TST
RCV
XMT
XMT
A
B
C
D
E
1
2
3
4
5
C1
F1
FA
F2
P3
P2
P1
P2
P3
P1
56
55
56
55
2
1
2
1
2
1
F1
FA
F2
-BATT
GND
