Interlogix NS3502-8P-2S User Manual - Manual (Page 325)

IFS NS3502-8P-2S User Manual
325
3~12 watts
PoE Splitter
PoE Splitter split the PoE 56V DC over the Ethernet cable into 5/12V DC power
output. It frees the device deployment from restrictions due to power outlet
locations, which eliminate the costs for additional AC wiring and reduces the
installation time.
12~25 Watts
High Power PoE Splitter
High PoE Splitter split the PoE 56V DC over the Ethernet cable into 12/24V DC
power output. It frees the device deployment from restrictions due to power
outlet locations, which eliminate the costs for additional AC wiring and reduces
the installation time.
4.16.2 Power Configuration
In a power over Ethernet system, operating power is applied from a power source (PSU-power supply
unit) over the LAN infrastructure to powered devices (PDs), which are connected to ports. Under some
conditions, the total output power required by PDs can exceed the maximum available power provided
by the PSU. The system must be paired with a PSU capable of supplying enough power for the total
potential power consumption of all the PoE ports in the system. In order to maintain the majority of
ports active, power management is implemented.
The PSU input power consumption is monitored by measuring voltage and current .The input power
consumption is equal to the system’s aggregated power consumption .The power management
concept allows all ports to be active and activates additional ports, as long as the aggregated power of
the system is lower than the power level at which additional PDs cannot be connected .When this value
is exceeded, ports will be deactivated, according to user-defined priorities. The power budget is
managed according to the following user-definable parameters: maximum available power, ports
priority, maximum allowable power per port.
Reserved Power determined by
There are five modes for configuring how the ports/PDs may reserve power and when to shut down
ports.

Classification mode
In this mode each port automatic determines how much power to reserve according to the class
the connected PD belongs to, and reserves the power accordingly. Four different port classes exist
and one for 4, 7, 15.4 and 30.8 Watts.
Class Usage
Range of maximum power used by
the PD
Class Description
0 Default 0.44 to 12.95 Watts
Classification
unimplemented