Catalyst 6500 Series Switches Installation Guide - Ipland

Removing and Installing the DC-Input Power Supplies
Chapter 4
Removal and Replacement Procedures
Step 8
Connect the source DC cable lugs to the 2700 W power supply terminal block posts (Figure 4-23) in this
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
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.
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 4-23
Attaching the Source DC Cables and the Ground Cable
PWR-2700-DC/4
-VE-1
-VE-1
INPUT1 INPUT2 FAN OUTPUT
OK OK OK FAIL
48V-60V 48V-60V
=40A =40A
-VE-2
-VE-2
ALL FASTENERS MUST BE FULLY ENGAGED
PRIOR TO OPERATING THE POWER SUPPLY
270853
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 shows how the source DC cables are routed from the left side of the power supply.
Warning When installing the unit, always make the ground connection first and disconnect it last. Statement 42
Step 9
Step 10
Route and secure the ground cable to the fixed cable guide loops with the two cable-ties supplied with
the power supply. (See Figure 4-24.)
Position the clear plastic terminal block cover over the terminal block and secure it to the power supply
using the four supplied screws. (See Figure 4-24.)
4-34
Catalyst 6500 Series Switches Installation Guide
OL-5781-08