Overview
The AT-PWR11 is an DC redundant power supply for the AT-8400 Series switch.
When installed, the unit operates in a standby mode. If the standard power supply
fails or loses power, the AT-PWR11 unit changes from standby to active and
provides all power to the system to prevent a network failure.
Note
The power supply is hot-swappable. You can install it without powering off
the chassis.
AT-PWR11
DC
P
O
W
E
R
F
A
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L
T
WARNING
BEFORE
EJECTING,
LOOSEN
THUMBSCREW
!
Related Documents
The Allied Telesyn web site at www.alliedtelesyn.com contains the most recent
documentation, software, and technical information on all of our products. For
details on the features and functions of your Allied Telesyn AT-8400 Chassis and
line cards, refer to the following manuals from our web site:
❑ AT-8400 Series Switch Reference Guide
PN 613-50399-00
❑ AT-S60 Management Software User’s Guide
PN 613-50400-00
❑ AT-S60 Command Line User’s Guide
PN 613-50401-00
Package Contents
Make sure the following items are included in the shipping package. If any item is
missing or damaged, contact your Allied Telesyn sales representative for
assistance.
❑ One AT-PWR11 Redundant Power Supply (DC)
❑ Installation Guide
❑ Warranty Card
Note
If you are replacing a failed power supply, refer to the AT-8400 Series Switch
Reference Guide for instructions on how to remove a power supply from a
chassis.
Installing the AT-PWR11 Power Supply
Before installing a power supply, please note the following:
❑ Refer to the AT-8400 Series Switch Reference Guide for electrical safety and
emission information.
❑ The AT-PWR11 unit must be installed in a DC powered AT-8400 Chassis.
This type of chassis has two DC terminal blocks on the back panel.
❑ There may be several different models of DC power supplies. Each model
is rated for a different power load. Both power supplies in an AT-8400
chassis must be of the same model type. Do not mix power supplies with
different power ratings in the same chassis.
To install the AT-PWR11, follow these steps:
1. Using a Phillips screwdriver, loosen the two captive screws that secure the
power supply cover to the chassis and remove the cover from the chassis. The
cover is removed by angling it from the bottom as you slide it down and out of
the chassis.
2. Using a Phillips screwdriver, loosen the captive screw that secures the cover
over the power supply PWR B slot and slide the cover from the chassis.
Note
Store the cover in a safe place. You should reinstall it if you ever remove a
power supply from the chassis without installing a new one.
3. Place the locking levers on the new AT-PWR11 unit in the released position.
1
AT-8411
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EJEC
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AT-84 11
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AT-8411
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BE
FO
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H
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BSCR
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AT-PWR11
DC
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A
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W
AR
NING
BEFORE
EJECTING,
LOOSEN
THUMBSCREW
!
AT-PWR11
Redundant Power Supply (DC)
Installation Guide
Allied Telesyn, Inc.
960 Stewart Drive, Suite B
Sunnyvale, CA 94085 USA
Tel 1 (408) 730-0950 • Fax 1 (408) 736-0100
Visit our web site at: www.alliedtelesyn.com
PN 613-50396-00 Rev B
1 2 3
4. Slide the new AT-PWR11 power supply into the power supply slot until it makes
contact with the backplane of the chassis. Be sure that the labeling on the
power supply is right-side up. Also be sure to align the green board on the
power supply with the slots in the chassis. Once the power supply makes
contact with its connector on the backplane, press firmly to fully seat the power
supply on the power connector.
Note
If you are unable to slide the power supply completely into the slot, you may
have purchased the wrong type of power supply for the chassis. A DC
powered chassis will have two DC terminal blocks on the back panel.
5. Move the locking levers on the AT-PWR11 unit into the locked position and
tighten the captive screw to secure the power supply in the chassis.
Note
Always use the installation screw to secure the power supply to the switch.
Leaving the power supply partially seated may cause the system to halt and
subsequently crash.
6. Slide the power supply cover back into the chassis and secure the cover by
tightening the two captive screws.
A
T
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11
D
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1
A
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8411
TX
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1
0
A
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1
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0
2
3
A
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-
8411
TX
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L
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1
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1
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8411
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1
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1
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A
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P
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11
D
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P
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A
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WARN
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BEFOR
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,
LO
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SEN
THU
M
BSC
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EW
!
AT-PW
R11
DC
P
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W
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F
A
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L
T
AT-PW
R11
DC
P
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WARNING
BE
FO
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CTING,
LOO
SE
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TH
UM
B
SCREW
!
WARNING
B
EFO
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EJEC
TING,
LO
OSE
N
THU
M
BSCREW
!
Wiring the AT-PWR11 Power Supply
Warning
ALWAYS connect the wiring to the LAN equipment first before connecting
the wiring to the breaker. To avoid the danger of physical injury from
electrical shock, do not work with HOT feeds. Always be sure that the breaker
is in the OFF position before connecting the wiring to the breaker.
Note
A tray cable is required to connect the power source if the unit is powered by
centralized DC power. The tray cable must be UL listed Type TC tray cable and
rated at 600 V and 90 degree C, with three conductors, minimum 14 AWG.
1. On the rear side of the chassis is a DC terminal block labeled POWER B. Starting
from the left side of the terminal block, identify the positive, frame ground
and negative terminals using the symbols beneath to the terminal block.
2. With a 14-gauge wire-stripping tool, strip the three wires in the tray cable
coming from the DC input power source to 8mm
± 1mm (0.31 in., ± 0.039 in.).
Warning
Do not strip more than the recommended amount of wire. Stripping more
than the recommended amount can create a safety hazard by leaving
exposed wire on the terminal block after installation.
3. Connect the frame ground wire to the terminal marked with the ground
symbol by inserting the wire into the terminal and tightening the connection
with a flathead screwdriver.
Warning
When installing this equipment, always ensure that the frame ground
connection is installed first and disconnected last.
4. Connect the -48 VDC RTN feed wire to the terminal block marked + (plus).
5. Connect the -48 VDC feed wire to the terminal block marked - (minus).
8mm ±1mm
(0.31in. ±0.039 in.)
40-60VDC
Warning
"Safety Hazard"- Check to see if there are any exposed copper strands
coming from the installed wires. When this installation is done correctly
there should be no exposed copper wire strands extending from the
terminal block. Any exposed wiring can conduct harmful levels of electricity
to persons touching the wires.
6. Secure the tray supply cable near the rack framework using multiple cable ties
to minimize the chance of the connections being disturbed by casual contact
with the wiring. Use at least four cable ties, separated four inches apart. Locate
the first one within six inches of the terminal block.
Note
This system will work with a positive grounded or negative grounded DC
system.
7. Ensure that the circuit breaker is in the OFF position.
8. Connect the supply-cable wires to the circuit breaker.
9. Energize the circuit breaker.
Technical Specifications
Power Specifications: 40 - 60V DC, 6A maximum
Maximum Operating Temperature: 0° C to 40° C (32° F to 104° F)
Maximum Storage Temperature: -20° C to 80° C (-4° F to 176° F)
Operating and Storage Altitude: Up to 3,048 meters (10,000 feet)
Relative Humidity Operating
and Storage: 5% to 80% (non-condensing)
Electrical Safety and Emission Statement
Standards: This product meets the following standards when installed in compliant host equipment.
Emission FCC Class A, EN55022 Class A, EN61000-3-2, EN61000-3-3, VCCI Class A, C-TICK
WARNING: In a domestic environment this product may cause radio interference in which case the user may be
required to take adequate measures.
Immunity EN55024
Electrical Safety UL60950 (UL/cUL), EN60950 (TUV)
Copyright 2003 Allied Telesyn, Inc. All rights reserved.
No part of this publication may be reproduced without prior written permission from Allied Telesyn Inc.
U.S. Federal Communications Commission
RADIATED ENERGY
Note: This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to
Part 15 of FCC Rules. These limits are designed to provide reasonable protection against harmful interference when
the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in accordance with this instruction manual, may cause harmful
interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful
interference in which case the user will be required to correct the interference at his own expense.
Note: Modifications or changes not expressly approved of by the manufacturer or the FCC, can void your right to
operate this equipment.
Industry Canada
This Class A digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations.
Cet appareil numérique de la classe A respecte toutes les exigences du Règlement sur le matériel brouilleur du
Canada.
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