Installation

ANN-BUS Devices

Wiring Distance Calculation Example:

Suppose a system is configured with the following ANN-BUS modules:

•2 ANN-80 Remote LCD Annunciators

•1 ANN-S/PG Serial/Parallel Printer Interface Module

•1 ANN-I/O LED Driver Module

The total worst case current is calculated as follows:

ANN-80 Current Draw

= 2 X 0.040 amps

= 0.080 amps

 

 

 

ANN-S/PG Current Draw

= 1 X.0.040 amps

= 0.040 amps

 

 

 

ANN-I/O Current Draw

= 1 X.0.200 amps

= 0.200 amps

 

 

Total Worst Case Current Draw

= 0.320 amps

 

 

 

Using this value and referring to the Wiring Distance Table 2.1 on page 31, it can be found that the available options are:

463 feet maximum using 22 Gauge wire

1,172 feet maximum using 18 Gauge wire

1,866 feet maximum using 16 Gauge wire

2,953 feet maximum using 14 Gauge wire

2.7.1.2 Wiring Configuration

Figure 2.15 illustrates the wiring between the FACP and ANN-BUS devices.

FACP

TB3

ANN-BUS and power wiring are supervised and power-limited

ANN-80

Figure 2.15 FACP wiring to ANN-BUS Device

aan80toRP2001.cdr

32

MRP-2001 & MRP-2001E PN 53040:A 4/16/2007