4-49
Catalyst 6500 Series Switches Installation Guide
OL-5781-08
Chapter 4 Removal and Replacement Procedures
Removing and Installing the DC-Input Power Supplies
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 (
Figure 4-34
) in this order:
1.
Ground cable lug to the ground terminal posts
2.
Negative (–) 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)
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)
Caution
When you tighten the terminal nuts, make sure that they are snug. Do not overtighten them.
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
DC-Input Wire Connections for 2700 W Operation (Right-Side Power Bay)
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.
Step 15
Position and secure the left inner terminal block cover with two screws. Position and secure the right
inner terminal block cover with one screw.
Step 16
Using the cable tie provided, place the cable tie through the slot at the top of the right terminal block
cover, and secure the wiring to the left terminal block.
Step 17
Install and secure outer terminal block cover with the two screws.
Caution
To prevent a short circuit or shock hazard after wiring the DC-input power supply, reinstall the terminal
block covers.
114011
3
INPUT OK
FAN
OK
OUTPUT
FAIL
I
0
1
2
Captive
installation
screw
Power
switch
Plastic
insulator
( ) Ground
Power leads
attached to
terminal block
(+) Positive
( - ) Negative
(+) Positive
( - ) Negative
Terminal
block cover