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SENSOR CELL
FIGURE 7, MC-4231 (4 WIRE ADDRESSABLE SENSOR)
J1
J2
J3
J4
J5
TEST/CAL SWITCH
TX +
RX -
+28VDC
TB1
SON
A
L
E
R
T
SON
A
L
E
R
T
RES
E
T
AL
A
R
M
TX -
RX +
FIGURE 8, 4 WIRE ADDRESSABLE MONITOR THRU BARRIERS
BLUE REMOTE
TX LINE
20 VDC
BARRIER 1
BARRIER 2
MC-4231-CO
1
2
3
4
1
2
3
4
RX LINE
20 VDC
BARRIER 1, 2, 3 = CLASS J DUAL CIRCUIT, MTL 768+
NOTE: CABLE CONNECTIONS FROM BARRIERS
TO SENSORS MUST BE SHIELDED
12 AWG GND WIRE
MINIMUM
RX LINE
BARRIER 3
1
2
3
4
TX LINE
PERMISSIBLE AREA
+
+
-
-
