Quick Start Guide
EX Series Redundant Power System
IN THIS GUIDE
Step 1: Begin | 1
Step 2: Up and Running | 4
Step 3: Keep Going | 6
Step 1: Begin
IN THIS SECTION
Mount the RPS | 2
Connect Power to the RPS | 2
To install and configure a Juniper Networks EX Series Redundant Power Supply (RPS), you need:
•
Two mounting brackets and eight mounting screws for rack mounting (provided)
•
One RPS cable per switch (one is provided, six is the maximum needed)
•
At least one EX-PWR3-930-AC power supply (one provided in a separate box)
•
Electrostatic discharge (ESD) grounding strap (not provided)
•
Phillips (+) screwdriver, number 1 (not provided)
•
Screws to secure the chassis to the rack or cabinet (not provided)
Mount the RPS
Installing the RPS requires one person to lift the switch and a second person to secure it to the rack. Mount an RPS on
two posts of a 19-in. rack or cabinet by using the mounting brackets provided with the switch. You can also mount an
RPS on four posts of a 19-in. rack or cabinet by using the separately orderable four-post rack-mount kit. There is no
traditional front and back on an RPS. You can position either the switch connector side or the power supply side of the
RPS at the front of the rack.
Connect Power to the RPS
IN THIS SECTION
Install Power Supplies | 2
Connecting the RPS to AC power | 3
Install Power Supplies
Install one, two, or three power supplies. Install the first one in the center slot.
1. Remove the cover from an RPS power supply slot---use the center slot first.
NOTE: RPS will not power up if the center power supply is not installed first.
2. Use the screwdriver to loosen the locking lever screw on the power supply.
3. Push down on the locking lever until it is in its lowest position.
4. Using both hands, slide the power supply into the uncovered power supply slot.
2
Locking lever
g021300
Tighten captive screw.
5. Push the locking lever up to its highest position.
6. Using the screwdriver, tighten the locking lever screw.
Each power supply can provide backup power for one switch, with a maximum of three switches concurrently supported
by three power supplies.
Connecting the RPS to AC power
1. Squeeze the two sides of the power cord retainer clip and insert the L-shaped ends of the wire clip into the holes in
the bracket on each side of the AC appliance inlet.
2. Insert the coupler end of the power cord into the AC appliance inlet.
Tighten
adjustment nut.
A
C
DC
g021301
3. Push the cord into the slot in the adjustment nut of the power cord retainer. Turn the nut until it is snug against the
base of the coupler and the slot in the nut is turned 90° from the top of the switch.
4. If the AC power source outlet has a power switch, set it to the OFF (0) position.
5. Plug the power cord into the power source outlet.
6. If the AC power source outlet has a power switch, set it to the ON (|) position.
3
The RPS powers up as soon as the first power supply is installed in the center slot. Install up to two additional power
supplies with the power on (hot-swap)---be sure to connect a power cord to each power supply.
Step 2: Up and Running
IN THIS SECTION
Connect Each Supported Switch to the RPS | 4
Installation is Complete | 5
(Optional) Reconfigure Switch Priority | 6
(Optional) Configure Power to Support Only Non-PoE Switches | 6
Connect Each Supported Switch to the RPS
Each configured switch has a priority assigned to it when you connect it to the RPS. Those priority values determine which
switches receive power from the RPS first. Priority is determined by connector position. By default, looking at the connectors,
the leftmost connector has lowest priority and the rightmost one has highest priority. Position your switches accordingly.
(You can also configure switch priority from switches---see Optionally Override Default RPS Priority Configuration on the
next page.)
1. Attach the ESD grounding strap to your bare wrist and to the ESD point on the RPS chassis.
2. If the RPS connector on the switch is covered with a panel, remove the cover panel.
3. Connect the RPS cable to a powered switch.
4
EX2200-24-4G REV: X1
750-026464 REV: X3
MAC: 00:23:9C:oE:19:00
Mfg. Date
20090227
MADE IN CHINA
g021302
RPS
4. If the RPS connector on the RPS chassis has a cover on it, remove the cover panel.
5. Connect the cable to the uncovered RPS connector. The RPS software starts configuring a connection as soon as both
sides of the cable are connected.
6. After a minute, verify connection status. The Status LED corresponding to the connector should be lit. The LED can
be steady (connected), blinking (supplying power), or off (no connection).
7. Connect up to five more switches.
NOTE: You can also determine connection status by issuing the show redundant-power-system led command
on the switch.
Installation is Complete
Your RPS is now installed and capable of providing either PoE or non-PoE backup power to one attached switch per power
supply. You can check RPS status from any connected switch using the command show chassis redundant-power-supply.
5
(Optional) Reconfigure Switch Priority
You can override the default RPS switch priority by configuring RPS priority on the switches. For directions on changing
switch priority, see the redundant-power-system priority command in the Complete Guide for the EX Series Redundant
Power System.
(Optional) Configure Power to Support Only Non-PoE Switches
If you don’t need to support PoE, your RPS can provide power to up to six connected switches simultaneously (two per
power supply). For directions on changing the power setting, see the request-redundant-power-system multi-backup
command in the Complete Guide for the EX Series Redundant Power System.
Step 3: Keep Going
IN THIS SECTION
Safety Warnings Summary | 6
Power Cable Warning (Japanese) | 7
Contacting Juniper Networks | 7
See the complete RPS documentation at https://www.juniper.net/documentation/.
Safety Warnings Summary
This is a summary of safety warnings. For a complete list of warnings, including translations, see the Complete Guide for
the Redundant Power System at https://www.juniper.net/documentation/.
•
Permit only trained and qualified personnel to install or replace RPS components.
•
Perform only the procedures described in this guide and the EX Series documentation. Other services must be performed
only by authorized service personnel.
•
Before installing the RPS, read the planning instructions in the documentation to make sure that the site meets power,
environmental, and clearance requirements.
•
Before connecting a RPS to a power source, read the installation instructions in the documentation.
6
•
Installing an RPS requires one person to lift the switch and a second person to install mounting screws.
•
If the rack has stabilizing devices, install them in the rack before mounting or servicing the RPS in the rack.
•
Before installing or after removing an electrical component, always place it component-side up on an antistatic mat
placed on a flat, stable surface or in an antistatic bag.
•
Do not work on the RPS or connect or disconnect cables during electrical storms.
•
Before working on equipment that is connected to power lines, remove jewelry, including rings, necklaces, and watches.
Metal objects heat up when connected to power and ground and can cause serious burns or become welded to the
terminals.
Power Cable Warning (Japanese)
The attached power cable is only for this product. Do not use this cable for another product.
g040300
Contacting Juniper Networks
For technical support, see:
http://www.juniper.net/support/requesting-support.html
Juniper Networks, the Juniper Networks logo, Juniper, and Junos are registered trademarks of Juniper Networks, Inc. in the
United States and other countries. All other trademarks, service marks, registered marks, or registered service marks are the
property of their respective owners. Juniper Networks assumes no responsibility for any inaccuracies in this document. Juniper
Networks reserves the right to change, modify, transfer, or otherwise revise this publication without notice. Copyright © 2020
Juniper Networks, Inc. All rights reserved. Rev. 01, June 2020.
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