Foundry Networks M2404F - Manual (Page 17)

Foundry NetIron M2404C/M2404F Metro Access Switches
January 2007 © 2007 Foundry Networks, Inc. 11
DC power-supply terminals:
-48V/3A GND +BAT.RET
LEDs:
INVERT CON. PWR
Figure 12: DC Power Supply Unit
The DC power supply panel has the following components:
Input terminals:
-48V/3A Negative DC input terminal
GND Ground terminal internally connected to the platform’s ground line
+BAT.RET Positive DC input terminal
NOTE Neither the +BAT.RET nor the -48VDC is connected to the GND terminal. If
required, this can be performed externally by the user.
LEDs:
PWR Glows green when power is on
INVERT CON. Glows red to indicate inverted DC polarity
Blank Covers
To avoid overheating of the components by improper air-flow, always keep empty slots
covered. Use the panel screws on the supplied blank faceplates and blank filler to fasten the
blanks to the appropriate empty slots.