Cabletron Systems STS-PSU Installation guide

Brand: Cabletron Systems

Model: STS-PSU

Type: Installation guide

This manual is also suitable for

1 2 3

SmartStack STS-RPC Redundant

Power Center

SmartStack STS-PSU Redundant

Power Supply Unit

Introduction

The SmartStack STS-PSU Redundant PSU is an external

power supply unit for the SmartStack STS16-20RM Token

Ring Switch, the SmartStack STS16-20R Token Ring

Workgroup Switch, and the SmartStack STS16-20FRM

Token Ring Fiber Switch.

The STS-PSU can be table mounted or mounted in the STS-

RPC chassis unit, and is connected to the STS16-20RM/

STS16-20R/STS16-20FRM switch via a low voltage DC

cable. The STS-PSU is used in installations where redundancy

(increased reliability) is required.

The SmartStack STS-RPC Redundant Power Center is a

chassis unit designed to hold from one to six STS-PSUs. The

STS-RPC unit can be table mounted or mounted in any

standard 19" rack.

Figure 1. STS-RPC Front Panel

Package Contents

Your STS-RPC package contains the following items:

•

One STS-RPC (with five blind panels)

•

One STS-PSU (mounted in the STS-RPC chassis)

•

One DC power cable

•

One plastic bag containing rubber pads, rack mounting

nuts and an Allen key

•

One STS-RPC/STS-PSU Installation Guide (this

document)

Your STS-PSU package contains the following items:

•

One STS-PSU Redundant Power Supply Unit

•

One DC power cable

•

One STS-RPC/STS-PSU Installation Guide (this

document)

Installing the STS-RPC Unit

Use the following steps when table-mounting the STS-RPC

Redundant Power Center:

1. Mount the four self-adhesive pads in the recesses on the

bottom of the unit.

2. Place the unit on any stable, flat surface. Leave enough

room around the unit for ventilation and access to cables.

Caution:

Place no more than three units (switches) directly on

top of any other unit. Doing so may cause damage to the lower

unit.

Use the following steps when rack-mounting the STS-RPC

Redundant Power Center:

1. Open the cap on the front of each bracket cover. Using the

Allen key supplied with the unit, remove the retaining

screws, keeping them for later use. Push the bracket covers

towards the back of the unit and lift them off.

2. Position the STS-RPC unit in the rack. Slide the unit up

and down until the bracket holes line up with the holes in

the rack. Using the screws from the bracket covers and the

nuts supplied with the unit, attach the unit to the rack.

Close the bracket cover caps again to conceal the screws.

Note:

Mount the STS-RPC unit in the middle of a stack of

switches so that the DC cable is able to reach all switches.

Installing the STS-PSU Power Supply Unit

The STS-PSU unit can be table mounted or mounted in the

STS-RPC chassis.

If you are table mounting the STS-PSU unit, simply place the

unit on any flat, stable surface. Leave enough room around the

unit for ventilation and access to cables.

If you are mounting the STS-PSU unit in the STS-RPC

chassis, use the following procedure:

1. Select a location for the STS-PSU unit in the STS-RPC

chassis. Any vacant slot can be used.

2. Remove the blind panel by loosening the two

thumbscrews.

3. Slide the STS-PSU unit into the slot and secure the unit

with the two thumbscrews.

Connectors and LEDs

The STS-PSU connectors and LEDs are listed below:

Cabling and Applying Power to the STS-PSU

Caution:

Both the SmartStack STS-PSU unit and the STS16-

20RM/STS16-20R/STS16-20FRM switch

must be off

before

connecting or disconnecting the DC power cable.

Connect one end of the DC cable to the DC outlet on the back

of the STS-PSU unit (either end of the cable can be used).

Connect the other end of the cable to the redundant power

supply connector on the back of the switch (you need one STS-

PSU unit per switch).

Figure 2. SmartStack STS-PSU Back Panel

Name Description

DC Connector 18-pin connector for the proprietary

DC cable.

AC Connector Standard AC power receptacle.

Power LED The power LED is on when the

STS-PSU is receiving power.

Table 1. STS-PSU Connectors and LEDs

Using an AC power cable that meets national regulations,

connect one end of the cable to the AC receptacle on the back

of the STS-PSU unit. Connect the other end of the cable to a

grounded power outlet or an uninterruptable power supply

(UPS). The front panel LED turns on when the unit is

receiving power.

Warning:

The STS-PSU unit does

not

have an on/off switch.

Power is

when the unit is plugged into a power source.

Important:

The socket outlet shall be installed near the

equipment and shall be easily accessible.

To achieve redundancy, both the switch and the STS-PSU unit

must be connected to an AC outlet. Note also that you increase

reliability by connecting the switch and the STS-PSU unit to

different power phases.

The electrical requirements are as follows:

How the STS-PSU Works

The STS-PSU unit is connected in parallel with the internal

switch power supply via the DC cable. If the internal power

supply fails, power is provided from the STS-PSU unit, and

the switch continues to function correctly. The failure is

flagged by internal logic circuitry and can be detected from the

management software.

❏

Trademarks

SmartStack is a trademark of Cabletron Systems, Inc. Other brand and product names are trademarks

and registered trademarks of their respective holders.

Copyrights

Cabletron reserves the right to modify the information given in this publication without prior notice. The

warranty terms and conditions applicable for your purchase of this equipment are given at the time of

purchase. Please consult them for details.

. No part of this publication may be reproduced, stored in a retrieval system, or

transmitted, in any form or by any means, electronic, mechanical, photocopying, recording or otherwise,

without the prior written permission of the publisher.

Publication: OC-7061 v. 1.1, 710001741

Part Number: 9032973-01

April 1999 by Cabletron Systems, Inc.

FCC Compliance

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

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.

This device complies with part 15 of the FCC Rules. Operation is subject to the following two

conditions: (1) This device may not cause harmful interference, and (2) this device must accept any

interference received, including interference that may cause undesired operation.

Modifications

If the device is changed or modified without the express approval of Cabletron, the user may void his or

her authority to operate the equipment.

Safety Notices

Caution:

The socket outlet shall be installed near the equipment and shall be easily accessible.

Danger:

To avoid shock hazard, do not connect or disconnect any cables or perform installation,

maintenance, or reconfiguring of the SmartStack STS-PSU during an electrical storm.

Danger:

To avoid the possibility of electrical shock, switch power off and unplug the power cord from

the outlet before detaching the power cord from the SmartStack STS-PSU.

Danger:

To avoid shock hazard the power cord must be connected to a properly wired and earthed

receptacle. Any equipment to which the SmartStack STS-PSU will be attached must also be connected

to properly wired and earthed receptacles.

Caution:

Observe the following power cable considerations before you begin installation of the SmartStack STS-

PSU.

The socket outlet shall be installed near the equipment and shall be easily accessible.

To prevent electrical shock, the power cord set used must comply with national regulations.

2a.

The female receptacle of the cord must meet CEE-22 requirements.

2b.

The cord must be UL listed, CSA labelled, and consist of three conductors with a maximum of 15

feet in length. Type SVT or SJT cord sets shall be used for units which stand on a desk or table. Type

SJT cord sets shall be used for units which stand on floor.

2c.

The male plug for units operating at 115 VAC shall consist of a parallel blade, grounding type

attachment plug rated 15 A, 125 VAC. The male plug for units operating at 230 VAC shall consist of a

tandem blade, grounding type attachment plug rated 15 A, 250 VAC. The male plug for units operating

at 230 VAC (outside of the United States and Canada) shall consist of a grounding type attachment plug

rated 15 A, 250 VAC and have the appropriate safety approvals for the country in which the equipment

will be installed.

Specification Value

Voltage Range 100–240 VAC autosensing

AC Current Rating 3.2 A @ 110 V; 1.6 A @ 220 V

Thermal Dissipation 150 W

Frequency 50–60 Hz

Table 2. Electrical Requirements

*710001741*

SmartStack STS-RPC

Redundant Power Center

SmartStack STS-PSU

Redundant Power Supply Unit

Installation Guide

Cabletron Systems STS-PSU Installation guide

Brand: Cabletron Systems

Model: STS-PSU

Type: Installation guide

This manual is also suitable for

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