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26 MS-9200UDLS PN 52750:E1 01/27/09
Wiring Distance Calculation Example:
Suppose a system is configured with the following ANN-BUS modules:
• 3 ANN-80 Remote Fire Annunciators
• 1 ANN-S/PG Serial/Parallel Printer Interface Module
The total worst case current is calculated as follows:
Using this value and referring to the Wiring Distance Table 1.1 on page 25, it can be
found that the available options are:
926 feet maximum using 22 Gauge wire
2,344 feet maximum using 18 Gauge wire
3,731 feet maximum using 16 Gauge wire
5,906 feet maximum using 14 Gauge wire
1.8.7.1.2 Wiring Configuration
Figure 1.3 illustrates the wiring between the FACP and ANN-BUS devices.
ANN-80 Current Draw = 3 X 0.040 amps = 0.120 amps
ANN-S/PG Current Draw = 1 X.0.040 amps = 0.040 amps
Total Worst Case Current Draw = 0.160 amps
Figure 1.3 FACP wiring to ANN-BUS Device
ANN-BUS Device
MS-9200UDLS
ANN-BUS and power wiring are
supervised and power-limited
24 VDC
nonresettable
ANN-BUS/ACS BUS
92udlstoann80.cdr