Cisco 6503 - Catalyst Firewall Security Sys Installation Manual page 240

Removing and Installing the DC-Input Power Supplies
Step 8 Connect the source DC cable lugs to the 2700 W power supply terminal block posts
order:
• Ground cable lug to the ground terminal posts
Negative (–) source DC cable lug to terminal post –VE-1
•
• Positive (+) source DC cable lug to terminal post +VE-1
Note
When you tighten the terminal nuts, make sure that they are snug. Do not overtighten them.
Caution
Overtightening the terminal nuts can damage the terminal block. The recommended torque values for
tightening the terminal nuts are 15 inch-pounds (1.7 newton-meters) (minimum) and 20 inch-pounds
(2.2 newton-meters) (maximum).
Figure 4-23
Position the source DC cables in the fixed cable guide. Place the top half of the fixed cable guide over
the source DC cables and secure the top half of the cable guide to the bottom half with two screws.
Figure 4-24
Warning When installing the unit, always make the ground connection first and disconnect it last. Statement 42
Route and secure the ground cable to the fixed cable guide loops with the two cable-ties supplied with
Step 9
the power supply. (See
Position the clear plastic terminal block cover over the terminal block and secure it to the power supply
Step 10
using the four supplied screws. (See
Catalyst 6500 Series Switches Installation Guide
4-34
If you are only going to install one pair of source DC cables (1350 W operation), you can attach
the source DC cables to either the VE-1 or VE-2 pair of terminal posts. Also notice that there is
only one ground connection on the power supply faceplate.
Attaching the Source DC Cables and the Ground Cable
P W R - 2
shows how the source DC cables are routed from the left side of the power supply.
Figure 4-24.)
Chapter 4
7 0 0 - D C
/4
-V E- 1
-V E- 1
-V E- 2
-V E- 2
A LL FA
ST EN ER
PR IO R
S M U ST
TO O PE
B E FU
R AT IN
LL Y EN
G TH E G A G ED
PO W ER
SU PP LY
Figure 4-24.)
Removal and Replacement Procedures
(Figure 4-23) in this
IN PU T1
IN PU T2
O K
FA N
48 V- 60 O K O U TP U
T
V O K
48 V- 60
FA IL
=4 0A
V
=4 0A
OL-5781-08