NFW-50X Manual —
P/N LS10129-001NF-E:C 7/25/2018
33
Optional Module Installation
Installation
Figure 2.18 illustrates the wiring between the FACP’s Secondary ANN-BUS and ANN-BUS devices.
Powering Both ANN-BUS Circuits Simultaneously
When simultaneously using the Primary and Secondary ANN-BUS circuits on the FACP, power can be shared from the Nonresettable
Power output on TB11. Alternately, one ANN-BUS can be powered by the Resettable Power output (TB11 Terminals 3 and 4) once it is
reconfigured as Nonresettable Power in panel programming. This provides the benefit of independently acting power-limiting for the
two ANN-BUS circuits.
Powering ANN-BUS Devices from an Auxiliary Power Supply
Figure 2.19 illustrates the powering of ANN-BUS devices from an auxiliary power supply such as the FCPS-24S6/8, when the total
ANN-BUS power requirements exceed the panel’s DC Power Output capability.
TB1
4 3 2 1
+ -
Figure 2.18 Secondary ANN-BUS wiring to ANN-BUS Device
ANN-BUS Device
NFW-50X
ANN-BUS and power wiring are
supervised and power-limited
24 VDC
nonresettable
Secondary
ANN-BUS
e
s
5
0
to
a
n
n
8
0
2
.w
m
f
TB1
4 3 2 1
1 2 3 4 5 6 7 8
ON
SW1
TB4
JP3
J3
TB5
TB2
JP1
JP2
OUT4
- NAC4 +
OUT3
- NAC3 +
OUT2
- NAC2 +
OUT1
- NAC1 +
8 7 6 5 4 3 2 1
3 2 1
10
9
8
7
6
5
4
3
2
1
AUX -
IN2-
IN2+
OUT1-
OUT1+
IN1-
IN1+
SYNC IN -
SYNC IN +
AUX +
NO
NC
AUX TBL
COM
-
Figure 2.19 Powering ANN-BUS Devices from FCPS-24S6/8
N-ANN-80
NFW-50X
FCPS-24S6/8
-24 VDC
+24 VDC nonresettable
Cut Ground Fault Detection jumper JP1
(FACP monitors for ground faults).
ANN-BUS and power wiring are
supervised and power-limited
e
s
5
0
to
fc
p
s
to
a
n
n
.w
m
f
Primary
ANN-BUS
