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Chapter
Figure 7-8
1
1
BPX 8620 AC power module
Connecting Power for DC Systems
This section describes how to connect DC power to the MGX 8220 shelf.
Warning
The power to the shelf is OFF at this point. DO NOT apply power by pressing the black button until
later.
DC Power to the Shelf
To connect DC power, perform the following steps:
Press the red button on each power entry module (PEM) so that their black buttons are in the out
Step 1
position. This opens the circuit breakers in the power entry modules.
Each power entry module has a Euro-block 3-pin male power receptacle for connecting the 48V DC
Step 2
power sources. The mating female connector is supplied by Cisco with the PEM.
Release 5.0, Part Number 78-6430-03 Rev. D0, November 2003
Multisystem Racks
Plenum or spacer
MGX 8220 shelf
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MGX 8220 shelf
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Main cooling
module
MGX 8220
AC power module
ESP
ESP
BPX 8620
Plenum or spacer
MGX 8220 shelf
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Booster cooling
module
MGX 8220 shelf
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MGX 8220 shelf
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Main cooling
module
AC power module
BPX 8620
BPX 8620 AC power module
Cisco MGX 8220 Installation and Configuration
Connecting Power for DC Systems
7-13
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Troubleshooting
