ANN-BUS Devices

Installation

2.7.1.3 Powering ANN-BUS Devices from Auxiliary Power Supply

Figure 2.16 illustrates the powering of ANN-BUS devices from an auxiliary power supply such as the FCPS-24FS6/8, when the maximum number of ANN-BUS devices exceeds the ANN- BUS power requirements.

Cut Ground Fault Detection jumper JP1 (FACP monitors for ground faults)

TB3

FACP

ANN-BUS

-24 VDC

+24 VDC

ANN-80

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

ann80toFCPSrp2001.cdr

FCPS-24FS6/8

Figure 2.16 Powering ANN-BUS Devices from FCPS-24FS6/8

2.7.2 ANN-BUS Device Addressing

Each ANN-BUS device requires a unique address (ID Number) in order to communicate with the FACP. A 5-position DIP switch on each device is used to set this address. The address set for these devices must also be programmed at the FACP for the specific device (refer to the programming section titled "ANN-BUS" on page 71).

A maximum of 8 devices can be connected to the FACP ANN-BUS communication circuit. Device addresses do not need to be sequential and can be set to any number between 01 and 08. Note that 00 is not a valid address. The following table shows the DIP switch setting for each address.

Note: address (ID Number) DIP switches on some devices may have more than 5 switch positions. Unless otherwise specified in the documentation supplied with each device, switch positions 6 and above must be set to OFF.

Address

Switch 5

Switch 4

Switch 3

Switch 2

Switch 1

not valid

OFF

OFF

OFF

OFF

OFF

01

OFF

OFF

OFF

OFF

ON

02

OFF

OFF

OFF

ON

OFF

03

OFF

OFF

OFF

ON

ON

04

OFF

OFF

ON

OFF

OFF

05

OFF

OFF

ON

OFF

ON

06

OFF

OFF

ON

ON

OFF

07

OFF

OFF

ON

ON

ON

08

OFF

ON

OFF

OFF

OFF

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

33