Interlogix FlexZone Series Product Manual page 18

Chapter 1: System planning
Figure 7: Single processor, double cable pass configuration
A side cable
matching
start points
B side cable
For a multi-processor FlexZone installation with a double pass of sensor cable
using software zoning, precise target locating, as well as power and data over
the sensor cables there are a number of requirements that must be observed.
Figure 8 illustrates a 1.8 km FlexZone perimeter with six processors and a
double pass of sensor cable.
• Each 48 VDC power supply can power to up to five processors over a
maximum length of 1.5 km of sensor cable. The power supply must be connected
to the central processor.
• The processors must be divided into blocks of two with network interface cards
(NIC) carrying the data between adjacent bocks (use multi-mode fiber optic NICs
to isolate the sensor blocks).
• The detection start points of each processor's sensor cables must match, and
both cables must be of equal length and have identical features (e.g., service
loops, sensitivity loops, zone demarcation loops, etc.).
• Power flow, data flow and synchronization must be setup for each block of
sensors via the UCM.
Figure 8: Multi-processor, double pass ranging sensors with isolated power groups
300 m
NIC
NIU
bi-directional data flow
power shared between
processors over both sensor cables
12
300 m
1/3 fence height
1/3 fence height
1/3 fence height
power supply group
300 m 300 m
FlexZone
processor
mmfo NIC
48
VDC
end points
identical features
300 m 300 m
mmfo NIC
48
VDC
FlexZone™ Product Guide
terminator
matching
terminator
power supply group
300 m
NIU