Power Connections - Interlogix FlexZone Series Product Manual

Power connections

WARNING: DO NOT bring AC mains power into the FlexZone enclosure. If a
local power supply is being used, it must be installed in its own weatherproof
enclosure. Consult the local electrical code for information about the connection
of AC mains to your power supply.
Note: When a central low voltage power supply is being used for primary power,
it should be powered from an uninterruptible AC power source.
Power over sensor cables
Power can be supplied to a group of up to five FlexZone sensors by connecting
the central processor to a 48 VDC power supply, and then connecting its two
sensor cables (one on each side) to one of the sensor cables of the two adjacent
processors through splice kits. The second sensor cable of each adjacent
processor is then connected to one of the sensor cables of the two outside
processors. This configuration also enables data communication over the sensor
cables.
Setting up power distribution and data communication over the sensor cables is
done via the UCM. To enable alarm data communication over the sensor cables,
at least one processor requires a data link connection to the Silver Network
through a network interface card. Figure 73 illustrates the power and data over
the sensor cables concept.
Local power supply
It is possible to use a local DC power supply when a source of AC power is
readily available near the processor. The DC power supply must be installed in
its own weatherproof enclosure. The local supply can be mounted on the same
post as the processor to keep the wire runs to a minimum.
Figure 62: Silver Network power and data over sensor cables
second
processor
maximum 5 processors
per 48 VDC power supply
splice
first
processor
FlexZone™ Product Guide
third
processor
splice
NIC
48 VDC
power supply
UPS
AC
terminators
splice
NIU
Network
Manager
computer
Chapter 2: Installation
fourth
processor
splice
fifth
processor
53