Perimeter layout guidelines
FlexZone Product Guide Page 21
Power over Ethernet
Silver Network based processors using Ethernet communications have the option of using Power
over Ethernet (Figure 73:
illustrates an Ethernet based Silver Network). To use this powering
option requires a PoE class 3 switch that is located within 100 m (328 ft.) of the processor, and
minimum Category 5 network cable. Power over Ethernet is supplied to the processor’s Network
Interface card (NIC) and the power output on the NIC is connected to the power input on the
processor. Each processor receiving PoE requires an earth ground connection.
Grounding considerations
A stable low resistance earth ground connection is required by each processor that is connected
directly to a power supply. Use a short length of heavy gauge copper wire to connect the ground
lug on the bottom of the processor’s enclosure to an approved earth ground. Processors receiving
PoE also require a ground connection via the enclosure ground lug. Processor’s receiving power
over the sensor cables do not require a direct ground connection. These processors use the
ground of the processor that is connected to the network power supply as their ground reference.
Consult the local electrical code for grounding information.
Alarm data communications
There are two selectable control modes for the FlexZone processor’s inputs and outputs (I/O) local
control mode and remote control mode. You set the control mode in software, via the Universal
Configuration Module (UCM) which is a Windows-based software application. The default setting
is local control mode, in which the processor controls the on-board relays to signal alarm and
supervision conditions. In local control mode, the two Aux (auxiliary) inputs are self-test inputs to
the processor. In remote control mode, the alarm data is carried over the Silver Network to a host
security management system (SMS). Remote control mode enables the SMS to control the
processor’s relays as output points to operate other security equipment. The two Aux inputs
provide inputs to the host SMS for reporting the status of auxiliary devices. In both modes, you can
configure the processor’s input/output response according to your site-specific requirements.
• local control mode - hard-wired contact closure alarm data connections and self-test input
wiring connections are made between the processor and the annunciation equipment
(4 output relays, 2 self-test inputs) (the optional Relay Output card provides 4 additional
outputs for reporting alarm conditions)
• remote control mode - the alarm data communications are via the Silver Network - EIA-422
copper wire data paths or fiber optic cables connect one or two processors to the Network
Interface Unit (NIU), the remaining processors can be connected via EIA-422 wiring, fiber
optic cable, or data can be carried between processors via the sensor cables the 4 output
relays are available as output control points from the host system (the optional Relay Output
card provides 4 additional relays, which are also available as output control points), the 2
auxiliary device inputs are available for reporting the status of auxiliary equipment to the host
system (the optional dry contact input card provides 4 additional inputs, which are also
available for connecting auxiliary equipment to the host system)
Note Senstar recommends using a fully managed PoE switch, to supply
power to a FlexZone processor.
Note Senstar recommends setting up a Silver Network, even when using
Local control mode. This enables remote calibration, maintenance
and diagnostic access to your FlexZone processors from a central
control facility.
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