Multitech PS9648 User manual

PS9648 Power Supply
User Guide

PS9648 Power Supply User Guide
P/N 82074300, Revision A
Copyright © 1998 by Multi-Tech Systems, Inc.
All rights reserved. This publication may not be reproduced, in whole or in part, without prior expressed
written permission from Multi-Tech Systems, Inc.
Multi-Tech Systems, Inc. makes no representation or warranties with respect to the contents hereof and
specifically disclaims any implied warranties of merchantability or fitness for any particular purpose.
Furthermore, Multi-Tech Systems, Inc. reserves the right to revise this publication and to make changes
from time to time in the content hereof without obligation of Multi-Tech Systems, Inc., to notify any
person or organization of such revisions or changes.
Revision Date Description
A 3/25/98 Manual Released
Multi-Tech, CommPlete, and the Multi-Tech logo are trademarks of Multi-Tech Systems, Inc. Other
trademarks and trade names mentioned in this publication belong to their respective owners.
Multi-Tech Systems, Inc.
2205 Woodale Drive
Mounds View, Minnesota 55112
[phone] or [phone]
U.S. Fax [phone]
Technical Support [phone]
BBS [phone] or [phone]
Fax Back [phone]
Internet Address: http://www.multitech.com

CommPlete Communications Server iii
Federal Communications Commission Statement
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant
to Part 15 of the 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 the in-
struction 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.
Warning: Changes or modifications to this unit not expressly approved by the party responsible for
compliance could void the user’s authority to operate the equipment.

iv CommPlete Communications Server

CommPlete Communications Server
v
Table of Contents
1 Introduction
Introduction ...................................................................................................................................................... 2
Description ........................................................................................................................................................ 2
Features......................................................................................................................................................... 2
Technical Specifications.................................................................................................................................... 3
Manual Organization......................................................................................................................................... 3
2 Installation
Introduction ...................................................................................................................................................... 6
Pre-Installation Notes ....................................................................................................................................... 6
Installation Procedure....................................................................................................................................... 6
3 Operation
Introduction ...................................................................................................................................................... 8
Power Switch ..................................................................................................................................................... 8
Power Indicator................................................................................................................................................. 8
4 Solving Problems
Introduction .....................................................................................................................................................10
LED Indicators..................................................................................................................................................10
Power Supply LED............................................................................................................................................10
Adjustment of the PS9648 Power Supply.........................................................................................................10
Important Safety Considerations.....................................................................................................................11
Fuse Replacement........................................................................................................................................11
Insertion and Removal of a Power Supply ..................................................................................................12
Safety Disconnect Device.............................................................................................................................12
5 Warranty, Service, and Technical Support
Limited Warranty.............................................................................................................................................14
Service...............................................................................................................................................................14
Technical Support ............................................................................................................................................15
Recording Product Information..................................................................................................................15
The Multi-Tech BBS .........................................................................................................................................16
Logging onto the Multi-Tech BBS ...............................................................................................................16
Downloading a File ......................................................................................................................................16
Reading a Message.......................................................................................................................................17
Leaving a Message........................................................................................................................................17
Bulletins .......................................................................................................................................................17
About CompuServe...........................................................................................................................................17
About the Internet............................................................................................................................................18
About the Multi-Tech Fax-Back Service ..........................................................................................................18
Index

vi CommPlete Communications Server

CommPlete Communications Server 1
1 Introduction

PS9648 Power Supply User Guide
2CommPlete Communications Server
Introduction
This manual describes the field installation of a Multi-Tech PS9648 power supply into a CommPlete
Communications Server CC9648 chassis. Installation and troubleshooting of the PS9648 should be
performed only by qualified service personnel.
Description
The PS9648 is a universal input switching power supply for the CommPlete Communications Server. Two
PS9648 power supplies are installed as standard equipment in each CommPlete CC9648 chassis. The
outputs of the two power supplies are connected in parallel to the CC9648 chassis power bus. If any of the
outputs on either power supply fails or is too low, the other power supply takes over with no switchover
time, and supplies all the power required to run the system. (This assumes that both power supplies are
turned on.)
Features
•Dual redundant, universal input switching supply.
•Front panel on/off switch and power LED indicator.
•Power LED lights only if all outputs are good.
•Outputs paralleled for redundancy.
•No switchover time for redundant supply takeover.
•Short circuit protection on all outputs.
•Over-voltage protection on 5 VDC output
•Logic level output signal for “All voltages OK.”

1 Introduction
CommPlete Communications Server 3
Technical Specifications
Input voltage 40 to 72 VDC
Input current 10 A @ 48 V at full load
Output voltage at
maximum current
5 VDC @ 65 A
21 VDC @ 0.5 A
5 V regulation ± 1% at full load
Indicator LED for power good indication
Environmental Temperature range: 0°–40° C (32°–104° F)
Humidity range: 0–95% (noncondensing)
Dimensions 7.3 cm × 17.1 cm × 29.8 cm (H × W × D)
2.88 in.× 6.75 in.× 11.75 in. (H × W × D)
Weight 2.27 kg (4 lb 9 oz.)
Limited Warranty Two years
Fuses 12 A 250 V fast blow (non-user replaceable)
Manual Organization
Chapter 1 Introduction
This chapter describes the PS9648, gives its technical specifications, and provides a guide to the
organization of the manual.
Chapter 2 Installation
This chapter describes how to install the PS9648 into the CommPlete chassis
Chapter 3 Operation
This chapter describes briefly how to operate the PS9648 power supply.
Chapter 4 Solving Problems
This chapter describes how to troubleshoot the PS9648 and adjust the output.
Chapter 5 Warranty, Service, and Technical Support
This chapter describes the warranty, and how to obtain technical support.