Cisco Catalyst 6807-XL User Manual

The PSMs provide 3000 W when powered with 240 VAC, and 1300 W when powered with 120 VAC. In
systems where power supply modules provide different wattage, you may not have true redundancy. If the
PSM with the higher wattage fails, the PSM with the lower wattage might not be able to handle the entire
load by itself and system power management will shut down devices.
When shutting down devices, depending on how much power saving is needed, the system powers down
modules in a descending order, starting with the highest-numbered slot. Slots containing supervisor engines
are bypassed and are not powered down (Power is automatically reserved for supervisor engine slots).
This shutdown order is fixed and cannot be changed.
Note
You can change the configuration of the power supplies to redundant or combined at any time. If you switch
from a redundant to a combined configuration, all the available PSMs are enabled (even a PSM that was
disabled because it was of a lower wattage ). If you change from a combined to a redundant configuration,
all the available PSMs are initially enabled, and if they are of the same wattage, they remain enabled. If they
are of different wattage, a syslog message appears and the lower wattage supply is disabled.
Related Topics
Removing and Installing Power Supplies, on page 50
Troubleshooting the Power Supply Module, on page 104
Power Supply Module LEDs, on page 9
3000 W Power Supply AC Power Cords, on page 67
Power Entry Module
The switch supports one to four AC power entry modules (PEMs) labeled AC1 to AC4. The four PEMs
connect to the four corresponding PSMs (Labeled 1 to 4), for example, AC1 connects to 1 and so on.
The AC input voltage from the PEM is transmitted to the backplane, which then conducts it to the PSM. The
power supply module generates the necessary amount of power.
Related Topics
Removing and Installing Power Supplies, on page 50
Troubleshooting the Power Supply Module, on page 104
Power Supply Module LEDs, on page 9
3000 W Power Supply AC Power Cords, on page 67
Power Supply Converter
The switch supports two redundant, field-replaceable 52 V converters labeled PSC1 and PSC2.
The PSC converts the 52 V supplied by the PSM to 3.3 V and conducts it to the backplane. The clock module,
VTT modules, and module slots (line cards) require 3.3 V.
The PSC supports:
•
Model number C6807-X-3.3V.
Cisco Catalyst 6807-XL Switch Hardware Installation Guide
OL-30656-01 7
Product Overview
Power Entry Module

Cisco Catalyst 6807-XL Specifications

General

Brand	Cisco
Model	Catalyst 6807-XL
Category	Switch
Language	English