Chapter 4: Web configuration
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NS3562-8P-2S User Manual
Note:
Since the industrial managed switch PoE ports support 56 VDC PoE power
output, ensure that the PD’s acceptable DC power range is from 56 VDC. Otherwise, it
will damage the PD.
System configuration
In a PoE 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 may include a PSU
capable of supplying less power than the total potential power consumption of all the
PoE ports in the system. To keep the majority of the ports active, power management is
implemented.
The PSU input power consumption is monitored by measuring voltage and current, and
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
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 automatically 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: 4, 7, 15.4, and 30.8 W.
Class
Usage
Range of maximum power used by the PD
Class Description
0
Default
0.44 to 12.95 W
Classification unimplemented
1
Optional
0.44 to 3.84 W
Very low power
2
Optional
3.84 to 6.49 W
Low power
3
Optional
6.49 to 12.95 W (or to 15.4 W)
Mid power
4
Optional
12.95 to 25.50 W (or to 30.8 W)
High power
Note:
1. The maximum power fields have no effect in classification mode.
2. The PD69012 PoE chip is designed so that Class level 0 will be assigned to 15.4 W
by AF mode and 30.8 W by AT mode under classification power limit mode. It is
hardware limited.
Содержание NS3562-8P-2S
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Страница 19: ...Chapter 2 Installation NS3562 8P 2S User Manual 17 Physical dimensions Dimensions W x D x H 178 x 25 x 134 mm ...
Страница 116: ...Chapter 4 Web configuration 114 NS3562 8P 2S User Manual Multicast service Multicast flooding ...