Palo Alto Networks
Installing the Hardware •
37
Connect Power
Connect Power
The PA-7050 firewall can use either four AC or four DC hot-swappable power supplies that are inserted
into the front of the chassis. With AC power supplies, the power cords and switches are located on the
back of the chassis; with DC power supplies, the DC power cables are connected to the front of the
power supply. In both configurations, at least two power supplies must be powered on before the
chassis will operate. During normal operation, all four power supplies should be connected for
redundancy and power circuit maintenance purposes.
The following topics describe the required procedures for AC and DC connections:
•
“Connect AC Power” on page 37
•
“Connect DC Power” on page 39
Connect AC Power
When connecting the PA-7050 to power, it is recommend that 240V circuits are used and that each pair
of AC power supplies is on a different circuit. During normal operation, all four power supplies should
be connected to provide redundancy. See Figure 19 for an illustration of the AC power connection.
IMPORTANT:
When the front chassis slots are fully populated, you must have a minimum number of
power supplies operational for the chassis to stay powered on. For 240V AC or -48V DC power, at least
two power supplies must be powered on at all times. This is important to consider for redundancy and
for scheduled electrical circuit maintenance.
Connecting the AC power:
1.
Ensure that all AC power switches are in the off position.
2.
Remove the two nuts over the grounding lug bolts located on the back of the chassis on the upper
left side.
3.
Use the provided two post grounding lug and crimp it to a 6 AWG cable of the correct length that
connects to your ground source.
Note: The power configuration can be changed in the field. For example, if you
order a chassis with DC power supplies, you can change it to an AC configuration.
When changing the power supply type, you must power down the chassis before
switching power modules.
WARNING: The chassis is designed to user either AC or DC power supplies, not
a combination of the two. Do not attempt to mix power supply types (AC/DC).
