Installing A Dc-Input Power Supply - Cisco SCE8000 Installation And Configuration Manual

Chapter 9 Removal and Replacement Procedures
Figure 9-4 Handling a DC-Input Power Supply
P W R -2
7 0 0 -D C
/4
Power Supply 1

Installing a DC-Input Power Supply

This section covers the DC-input power supply installation procedure for the Cisco SCE8000 chassis.
Note The DC return is to remain isolated from the system frame and chassis (DC-I).
Warning Before performing any of the following procedures, ensure that power is removed from the DC circuit.
Step 1 Power supply ground is required. Install the PWR-2700-DC/4 power supply ground as described in this
procedure.
Note The system ground connection with the PWR-2700-DC/4 power supply in a Cisco SCE8000 is provided
by the PWR-2700-DC/4 power supply ground. Additionally, you can connect a system (earth) ground.
Note You must always connect the PWR-2700-DC/4 power supply ground.
Note You must connect the PWR-2700-DC/4 power supply ground for both power supplies.
OL-16478-03
Power Supply 2
(redundant)
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/4
+V E- 1
-V E- 1
+V E- 2
-V E- 2
AL L FA
ST EN ER
PR IO R
S MU ST
TO OP
BE FU
ER AT ING LL Y EN
TH E PO
WE R SU
+V E- 1
INP UT
1 INP UT
+V E- 1 OK 2 FA N
OU TP UT
OK
48 V-6 0V
-V E- 1 OK
48 V-6 0V FA IL
=4 0A
=4 0A
-V E- 1
+V E- 2
+V E- 2
-V E- 2
-V E- 2
AL L FA
ST EN ER
PR IO R
S MU ST
TO OP
BE FU
ER AT ING LL Y EN
TH E PO GA GE
D
WE R SU
PP LY
+V E- 1 INP UT
1 INP UT
OK 2 FA N
OK OU TP UT
48 V-6 0V
OK
48 V-6 0V FA IL
=4 0A
=4 0A
-V E- 1
+V E- 2
-V E- 2
GA GE
D
PP LY
Cisco SCE8000 Installation and Configuration Guide, Rel 3.1.7
Removing and Replacing the Power Supply
9-7