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v Non-POE devices:
– The 12-volt AC power supplies (also called system (SYS) power supplies)
provide power to one management module and up to eight non-POE interface
modules. In the B08S, you can install a second 12-volt power supply for
redundancy. The B16S comes with and requires two 12-volt power supplies
and supports up to four 12-volt power supplies for redundancy.
v POE devices:
– The 12-volt AC power supplies (also called system (SYS) power supplies)
provide power to the management module, all non-POE interface modules (if
applicable), and all ports on POE modules that do not require POE power or
to which no power-consuming devices are attached. In the B08S you can
install a second 12-volt power supply for redundancy. The B16S comes with
and requires two 12-volt power supplies and supports up to four 12-volt power
supplies for redundancy.
– The 1250 W 48-volt POE power supplies provide power to the POE daughter
card, and ultimately to POE power-consuming devices. The number of POE
power-consuming devices that one 48-volt power supply can support depends
on the number of watts required by each power-consuming device. Each
48-volt power supply can provide a maximum of 1080 watts of POE power,
and each POE port supports a maximum of 15.4 watts of power per POE
power-consuming device. for example, if each POE power-consuming device
attached to the IBM device consumes 15.4 watts of power, one 48-volt supply
will power up to 70 POE ports. You can install a second 48-volt supply for
additional POE power.
– The 48-volt (220-volt input only) POE power supplies provide power to the
POE daughter card, and ultimately to POE power-consuming devices. The
number of POE power-consuming devices that one 220-volt power supply can
support depends on the number of watts required by each power-consuming
device. Each 220-volt power supply can provide a maximum of 2160 watts of
POE power, and each POE port supports a maximum of 15.4 watts of power
per POE power-consuming device. For example, if each POE
power-consuming device attached to the device consumes 15.4 watts of
power, one 220-volt supply will power up to 140 POE ports. You can install a
second 220-volt supply for additional POE power.
Note: The system powers on as many POE ports as the 48-volt POE power
supplies can handle. The system calculates the maximum number of POE
ports it can support based on the number of POE power supplies installed.
POE ports are enabled based on their priority settings. Keep in mind that the
system will reserve the maximum configured power per POE-enabled port,
even if the POE power-consuming device is drawing less power.
Attention:
The POE power supply is designed exclusively for use with the B08S
and B16S devices. The power supply produces extensive power to support 802.3af
applications. Installing the power supply in a device other than the ones
documented here will cause extensive damage to your equipment.
All power supplies are auto-sensing and auto-switching.
The power supplies are installed in the slots along the bottom of the chassis.
In the B08S the 12-volt (system) power supplies occupy slot numbers 3 and 4 on
the right, with the redundant supply in slot 4. The POE power supplies occupy slot
numbers 1 and 2 on the left. Figure 11 on page 20 shows power supply placement.
Chapter 2. Product Overview
19
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