44
Figure 31
Loop Terminal Connections - Class X
(Formerly Style 7)
Note:
All power limited circuits must use type FPL, FPLR, or FPLP power limited cable.
Isolators need to be close nipple connected to the device being protected.
Loop wiring: maximum loop resistance is 40 ohms total. These lines are power-
limited and fully supervised.
LEGEND
Conventional Heat Sensors
and Manual Pull Stations
F
C
s
F
ADDRESSABLE
THERMAL
SENSOR
WITH
ISOLATOR
BASE
ADDRESSABLE
SMOKE DETECTOR
WITH ISOLATOR BASE
F
C
s
M
Addressable Smoke Detector
with Isolator Base
Addressable Thermal Sensor
with Isolator Base
Conventional Smoke Sensor
Addressable Manual Pull Station
Fault Isolator Module
Addressable Monitor Module
(Wire Class B only)
S
H
H
S
I
TWISTED PAIR WIRE
TWISTED PAIR WIRE
TWISTED PAIR WIRE
I
I
I
I
I
I
I
I
M
Class X: For Class X operation use isolator bases
for the detectors and use isolator modules (front
and back as shown in this diagram) for the
addressable pull stations, monitor modules, and
control modules.
ANALOG
LOOP
CONNECTIONS
4-WIRE
RESETTABLE
SUPPLY
+
-
2
P
O
O
L
B
A
+
-
+
-
MD-871A
MAIN FIRE ALARM BOARD
i
Summary of Contents for FX-MNS-6000
Page 2: ......
