Switch User's Guide

Installation
70 CSX400 and CSX400-DC User’s Guide
Figure 20 48/60 Vdc Power Supply Connections
1. Connect the ground terminal of the dc input power strip to an appropriate earth ground
(green wire from power supply).
2. Refer to Figure 20 for the proper connections to a 48/60 Vdc power source. Then connect the
output leads of the 48/60 Vdc power source being used to the labeled negative (-) and positive
(+) terminals on the dc input power strip.
3. Restore power to the 48/60 Vdc power sources.
4. Press the on/off power switch on.
To prevent injury or damage to the equipment, remove power from the 48/60 Vdc
power source before proceeding with the following steps:
NOTE
The CSX400 sounds an audible alarm if there is a polarity reversal. If the alarm
sounds, turn off the 48/60 Vdc power source to that power supply. Then reverse the
positive and negative leads to the dc input power strip of that power supply. Restore
power from the 48/60 Vdc power source. Press the on/off switch to on. If the alarm
sounds again, press the power switch to off and call Cabletron Systems. Refer to
Getting Help.
DC Input Power Strip
48 or 60 Vdc
Power Source
+
–
Earth
Ground
ON/OFF