Cisco 6503 - Catalyst Firewall Security Sys Installation Manual page 255

Chapter 4 Removal and Replacement Procedures
Step 13 From the right side of the power supply, connect the power supply ground cable and the source DC cables
to the DC-input wires to the terminal block
1. Ground cable lug to the ground terminal posts
Negative (–) source DC cables to any two pairs of (–) terminal posts (VE-1 and VE-2, VE-1 and
2.
VE-3, or VE-2 and VE-3)
3. Positive (+) source DC cables to any two pairs of (+) terminal posts (VE-1 and VE-2, VE-1 and
VE-3, or VE-2 and VE-3)
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 4-34
Terminal
block cover
Power
switch
Step 14 Wrap the large perforated flaps of the insulators around each pair of source DC cables, inserting each
locking tab into the rear of the slot. Pull the tab until the cover is secured around the power cabling trim,
and discard excess tab plastic.
Position and secure the left inner terminal block cover with two screws. Position and secure the right
Step 15
inner terminal block cover with one screw.
Using the cable tie provided, place the cable tie through the slot at the top of the right terminal block
Step 16
cover, and secure the wiring to the left terminal block.
Install and secure outer terminal block cover with the two screws.
Step 17
To prevent a short circuit or shock hazard after wiring the DC-input power supply, reinstall the terminal
Caution
block covers.
OL-5781-08
DC-Input Wire Connections for 2700 W Operation (Right-Side Power Bay)
Plastic
insulator
I
0
INP UT OK
FAN OUT PUT
1
2
3 OK
Captive
installation
screw
Removing and Installing the DC-Input Power Supplies
(Figure 4-34) in this order:
FAIL
( ) Ground
Catalyst 6500 Series Switches Installation Guide
Power leads
attached to
terminal block
(+) Positive
( - ) Negative
(+) Positive
( - ) Negative
4-49