Notifier N-ANN-80 - Manual (Page 2)

Page 2 of 2 — dn-7114:c • 5/22/09
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This document is not intended to be used for installation purposes.
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Made in the U.S. A.
ANN-BUS DEVICE ADDRESSING
Each ANN-BUS device requires a unique address (ID Number)
in order to communicate with the FACP. A maximum of 8 devices
can be connected to the FACP ANN-BUS communication circuit.
See the FACP manual for more information.
WIRE REQUIREMENTS: COMMUNICATIONS CIRCUIT
The N-ANN-80 connects to the FACP ANN-BUS communica-
tions circuit. To determine the type of wire and the maximum wir-
ing distance that can be used with FACP ANN-BUS accessory
modules, it is necessary to calculate the total worst case current
draw for all modules on a single 4-conductor bus. The total worst
case current draw is calculated by adding the individual worst
case currents for each module.
NOTE: For total worst case current draw on a single ANN-BUS
refer to appropriate FACP manual.
After calculating the total worst case current draw, the following
table specifies the maximum distance the modules can be
located from the FACP on a single wire run. The table ensures
6.0 volts of line drop maximum. In general, the wire length is lim-
ited by resistance, but for heavier wire gauges, capacitance is
the limiting factor.
These cases are marked in the chart with an asterisk (*). Maxi-
mum length can never be more than 6,000 feet (1,800 m),
regardless of gauge used. See table below.
WIRE REQUIREMENTS: POWER CIRCUIT
• 14 to 18 AWG (0.75 - 2.08 mm 2 ) wire for 24 VDC power cir-
cuit is acceptable.
• All connections are power-limited and supervised.
• A maximum of eight N-ANN-80 modules may be connected
to this circuit.
WIRING CONFIGURATION
The following figure illustrates the wiring between the FACP and
ANN-BUS devices.
FACP Wiring to ANN-BUS Device
ORDERING OPTIONS:
N-ANN-80: Black 80 character LCD Annunciator.
N-ANN-80-W: White, 80 character LCD Annunciator.
ANN-SB80KIT-B: Black surface mount backbox with angled
wedge.
ANN-SB80KIT-W: White surface mount backbox with angled
wedge.
Communication Pair Wiring Distance: FACP to Last ANN-BUS Module
Total Worst Case
Current Draw (amps)
22 Gauge 18 Gauge 16 Gauge 14 Gauge
0.100 1,852 ft. 4,688 ft. * 6,000 ft. *6,000 ft.
0.200 926 ft. 2,344 ft. 3,731 ft. 5,906 ft.
0.300 617 ft. 1,563 ft. 2,488 ft. 3,937 ft.
0.400 463 ft. 1,172 ft. 1,866 ft. 2,953 ft.
0.500 370 ft. 938 ft. 1,493 ft. 2,362 ft.
0.600 309 ft. 781 ft. 1,244 ft. 1,969 ft.
0.700 265 ft. 670 ft. 1,066 ft. 1,687 ft.
0.800 231 ft. 586 ft. 933 ft. 1,476 ft.
0.900 206 ft. 521 ft. 829 ft. 1,312 ft.
1.000 (max.) 185 ft. 469 ft. 746 ft. 1,181 ft.
ANN-BUS and power
wiring are supervised
and power-limited.
ANN-BUS Device
NFW-50