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Figure 14: Connecting AC Power to the Ethernet Appliance
4.
Connect Power to a DC-Powered Ethernet Appliance
WARNING: The device must be properly grounded before you connect the DC power
cables.
Table 2: DC Power System Input Voltage
CAUTION: You must ensure that power connections maintain the proper polarity.
The power source cables might be labeled
Snap the wire bail over the power cord as shown in Figure 14 on page 17
c.
to prevent the power cord from accidentally disengaging.
Dress the power cord appropriately. Verify that the power cord does not
d.
block the air exhaust and access to device components or drape where
people could trip on it.
If sufficient power is available and the AC power supply is correctly installed,
the power supply powers up automatically. If the AC power supply is installed
correctly, the
LED on the SFB lights steadily.
PWR
If the
PWR
LED indicates that the power supply is not functioning normally,
repeat the installation and cabling procedures.
Item
Specification
DC input voltage
Operating range: –40.5 to –72 VDC
Step 5: Connect the Ground and Power Cables
and
to indicate their polarity. There
(+)
( )
Step 5: Connect the Ground and Power Cables
17
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