Features
1-4 Introduction
Power Supply Status Using Management
The N7 chassis power supplies report information to the DFE modules installed in the chassis
regarding their present operating status as well as the fan tray status. This information includes the
following:
• Power Supply ID (PS1, PS2)
• Power Supply Status (normal/fault/not installed)
• Power Supply Redundancy indication (redundant/not available)
• Fan Status (normal/fault)
Refer to the module-specific Configuration User’s Guide for instructions on how to access power
supply status information using Local Management.
Auto-Ranging Power Supplies
The N7 chassis power supplies automatically adjust to the input voltage and frequency, which
allows for an input voltage of 100 to 220 Vac, and a frequency between 50 and 60 Hz. See the
operating specifications in Appendix A. No additional adjustments are necessary. For installations
in North America two 15 A power cords are required. See Section 3.3 for more details.
Power Supply Replacement
To reduce network downtime, a power supply may be removed after it has been powered down.
When two power supplies are installed, this allows the removal of one power supply without
powering down the chassis and interrupting network traffic.
The N7 7C107 Chassis Cooling System
The N7 chassis features a removable fan tray that is accessible from the front of the unit. This unit
is hot swappable, which allows it to be replaced without powering down the chassis. The fan tray
has one LANVIEW LED located on the front of the unit. This LED indicates the status of the fan
tray (normal/fault/not installed). Refer to Chapter 2 for a full description of the fan tray LED
states.
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