Overview
The AT-PWR4 power supply provides convenient and reliable backup power
to maximize uninterrupted operation for the AT-MCR12 rackmount chassis in
the event the main power supply should fail.
Figure 1 shows the rear view of the AT-MCR12 media converter rackmount
chassis with the main power supply (left) and auxiliary power supply (right)
installed.
Figure 1 AT-PWR4 Power Supply Installed in AT-MCR12 Chassis
Related Documents
This installation guide is an abbreviated version of the installation procedure.
For details on the components, features, and functions of this product, refer to
the following document on our web site at www.alliedtelesis.com:
❑ AT-MCR12 Chassis Installation Guide
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Verifying Package Contents
Verify that the correct components are included in your package:
❑ One AT-PWR4 Universal Power Supply
❑ One Power Cord
❑ This Installation Guide
❑ Warranty card
Contact your sales representative if any items are missing or damaged.
AT-PWR4 Auxiliary Power Supply Features
The Allied Telesis AT-PWR4 offers maximum protection against service
interruption. The AT-PWR4 may be installed with the AT-MCR12 fully
populated and on line. In service, the AT-PWR4 provides automatic load
balancing for one or two power supplies. If a power supply should fail, the
green power indicator goes out, and on-the-fly switching transfers the entire
load to the auxiliary power supply unit. Once a replacement is obtained, it can
be installed (hot swapped) without requiring the AT-MCR12 to be powered
down.
Reviewing Safety Precautions
Please review the following safety precautions before installing the AT-PWR4.
Note
The indicates that a translation of the safety statement is available in a
PDF document titled “Translated Safety Statements” (613-000405)
located on the Allied Telesis website at www.alliedtelesis.com.
Warning
For centralized dc power connection, install only in a restricted access
area. E23
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. E24
Only trained and qualified personnel are allowed to install or replace this
equipment. E14
Laser
Do not stare into the laser beam. L2
Caution
Air vents must not be blocked on the unit and must have free access to
the room ambient air for cooling. E6
Operating Temperature: This product is designed for a maximum
ambient temperature of 40°C. E7
Installing the AT-PWR4 Auxiliary Power Supply
To install an AT-PWR4 power supply into an AT-MCR12 chassis, perform the
following procedure:
1. Remove the two screws that secure the blank plate that covers the
auxiliary power supply bay. The blank plate comes off revealing the
empty bay as shown in Figure 2. Keep the blank plate and screws in case
you choose to remove the auxiliary power supply in the future.
Figure 2 Removing the Blank Plate.
2. Orient the AT-PWR4 power supply housing as shown in Figure 3. Install
the power supply in the chassis bay by sliding the housing loosely into the
bay. Seat the AT-PWR4’s power connector firmly in the mating connector
on the backplane inside the rackmount chassis. Tighten the two thumb
screws to complete the installation.
Figure 3 Sliding the AT-PWR4 into the Chassis Auxiliary Power Bay.
Powering On the Switch
Warning
Power cord is used as a disconnection device. To de-energize
equipment, disconnect the power cord. E3
Caution
Use only safety licensed power supply cord.
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AT-PWR4 Auxiliary Power Supply
for AT-MCR12
Installation Guide
Allied Telesis, Inc.
www.alliedtelesis.com
613-000743 Rev A
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*613-000750 Rev A*
To apply power to an AT-PWR4 installed in an AT-MCR12 chassis, perform
the following procedure:
1. Connect the power cord to the power supply, as shown in Figure 4.
Figure 4 Connecting the AC Power Connector to Switch
2. Connect the power cord to an appropriate power outlet.
3. The power supply is self-adjusting for AC input power between 120 Volts and 240
Volts.
4. Verify that the POWER (PWR A or PWR B) LED is green. If the LED is OFF, refer
to the following “Testing and Troubleshooting the Installation” section.
The switch is ready for network operations.
Testing and Troubleshooting the Installation
Follow the guidelines in this section for testing and troubleshooting the
installation in the event a problem occurs.
1. Verify that the
POWER (PWR A or PWR B) LED is green. If one of the LEDs
is OFF, do the following:
❑ Check to be sure that the power supply is securely connected to the
power outlet.
❑ Check to be sure that the power supply is securely seated in the
chassis.
2. Check to be sure that the fans for both power supplies are operating. If a
fan is not operating, it is likely that the power supply has failed.
If you are still experiencing problems after testing and troubleshooting the
installation, contact Allied Telesis Technical Support at
www.alliedtelesis.com for assistance.
Warranty Registration
Allied Telesis hardware products are covered under limited warranties. Some
products have a longer warranty coverage than others.
This AT-PWR4 power supply has a limited warranty of 5 years.
All Allied Telesis warranties are subject to the terms and conditions set out on
the Allied Telesis website at www.alliedtelesis.com/warranty.
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Technical Specifications
Physical Characteristics
Dimensions 225 mm x 61 mm x 120 mm
(8.9 in. x 2.4 in. x 4.7 in.)
Operating Temperature 0° C to 40° C (32° F to 104° F)
Storage Temperature -25° C to 70° C (-13° F to 158° F)
Operating Relative Humidity 5% to 90% RH (non-condensing)
Storage Relative Humidity 5% to 95% RH (non-condensing)
Power Requirements
Power Rating 100-120 VAC, 50/60 Hz, 3.0 A
220 -240 VAC, 50/60 Hz, 1.5 A
Agency Certifications
Electrical Safety UL60950-1 (
c
UL
us
), EN60950-1 (TUV),
CSA 950
Immunity EN50082-1
Emmission EN55022-1 Class A
Copyright © 2007 Allied Telesis, Inc. All rights reserved. No part of this publication may
be reproduced without prior written permission from Allied Telesis, Inc.
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