Fan Tray Power Requirements; Power Supply Zone Overview - Juniper MX240 Instruction For Upgrading

Fan Tray Power Requirements

Table 1: Fan Tray Power Requirements
Component
MX240 high-capacity fan tray
MX480 high-capacity fan tray
MX960 high-capacity fan tray

Power Supply Zone Overview

Table 2: Minimum Required Number of Power Supplies
Router Model
MX240
Copyright © 2010, Juniper Networks, Inc.
All manuals and user guides at all-guides.com
Insert the air filter tray into the chassis by sliding it straight into the chassis until it
4.
stops.
Lower the cable manager back into position.
5.
Rearrange the cables in the cable manager.
6.
Figure 12: Installing the Air Filter
Unlike systems with previous MX960 AC supplies, the systems with MX Series
high-capacity power supplies are zoned. No current sharing between power supplies is
needed with the upgraded system because the redundancy changes from 3+1 per system
to 1+1 per zone. For MX960 AC configurations, two zones are present. Two adjacent
power supplies need to be installed in the chassis with two feeds attached.
To upgrade an MX960 AC router, remove one existing old power supply from either slot
0 or slot 3 (either far left or far right), and replace it with a high-capacity power supply.
Attach power feeds and power up the power supply. Remember to turn on both switches
while upgrading the MX960 AC power supply, that is, the one on the power supply and
the one on the Power Distribution Module (PDU). Continue by removing an adjacent
existing power supply, and replacing it with a high-capacity power supply.
The minimum number of power supplies must be present in the router at all times.
Configuration
AC – high line
Fan Tray Power Requirements
Power Requirement (Watts)
85
160
320
Minimum Required Number of Power
Supplies
1
13