Perimeter layout guidelines
4 - 16 • • • Intelli-FLEX II product guide
Figure 4-12 Cable connectors
Power source
Power source requirements can be determined after all other component
requirements have been met. There are two basic choices to power the
processors.
•
The DC power/float charger and backup battery provides 12 VDC for sites that
require one or two processors.
•
A centrally located low voltage DC power source is preferred for larger sites.
It can provide 24 or 48 VDC depending on the site requirements.
For sites in remote locations a UPS system may be required as the primary power
source.
Power distribution plan
The DC/DC converters on the Intelli-FLEX processors operate over an input range
of 18 to 56 VDC. The input is electrically isolated from the regulated 12 VDC
output. This allows the processors to operate reliably with long power
distribution runs.
Small installations can be operated from a 24 VDC power supply, whereas larger
installation with many processors, may require a 48 VDC power supply.
Intelli-FLEX II processors consume 3 Watts maximum
load (this includes the Configuration module).
terminator
Intelli-FLEX
processor
sensor cable
non-sensitive
feed cables
splices
sensor cable
terminator
1.5 m (5 ft.)
start point
overlap