55
Figure 33
Quad SLC Loop Terminal Connections - Class B
Notes:
• All power limited circuits must use type FPL, FPLR, or FPLP power limited cable.
• Loop wiring: maximum loop resistance is 40 ohms total. These lines power-limited
and fully supervised.
Conventional Heat Sensors
and Manual Pull Stations
2 Pair
F
LEGEND
Addressable Smoke Sensor
with Standard Analog Base
Addressable Thermal Sensor
with Standard Analog Base
Conventional Smoke
Sensor
Addressable Manual
Pull Station
Combination
Horn/Strobe
Addressable
Monitor Module
(Wire Class B only)
Addressable Supvr.
Output Module
End-Of-Line-Resistor
TWO WIRES
S
H
S
C
s
C
s
C
s
F
F
H
H
S
S
H
C
s
C
s
F
M
M
TWISTED PAIR WIRE
TWISTED PAIR WIRE
M
ANALOG
LOOP 2
B
A
ANALOG
LOOP 1
+
-
+
-
4-WIRE
RESETTABLE
SUPPLY
+
+
+
-
-
-
INDICATING
CIRCUIT
NAC 0
FX-4000
MAIN FIRE ALARM BOARD
ALCN-960MISO or ALCN-4792MISO
QUAD LOOP ADDER MODULE
S
S
B
A
+
-
+
-
ANALOG
LOOP 4
B
A
ANALOG
LOOP 3
+
-
+
-
S
S
B
A
+
-
+
-
ALCN-960D or ALCN -792D
DAUGHTER BOARD
SO
SO
The ALCN-960D is mounted over the
ALCN-960MISO Quad Loop Adder board to
provide four SLC loops total.
The ALCN-792D board is mounted over the
ALCN-4792MISO Quad Loop Adder board to
provide four SLC loops total.
Wire loops 3 and 4 in the same manner as
loops 1 and 2.
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