SFP-5UD & SFP-10UD Series Manual— P/N 52879:C2 1/24/2012 45
ANN-BUS Devices Installation
Powering ANN-BUS Devices from Auxiliary Power Supply
Figure 2.21 illustrates the powering of ANN-BUS devices from an auxiliary power supply such as
the FCPS-24S6/8, when the maximum number of ANN-BUS devices exceeds the ANN-BUS
power requirements.
2.8.2 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 82).
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.
Figure 2.21 Powering ANN-BUS Devices from FCPS-24S6/8
N-ANN-80
SFP-5UD/SFP-10UD
FCPS-24S6/8
+24 VDC
-24 VDC
ANN-BUS
Cut Ground Fault Detection jumper JP1 (FACP monitors for ground faults)
ANN-BUS and power wiring are
supervised and power-limited
TB3
ann80tofcps5x.wmf
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
To Next Page
Loading...
Need help?
General
