Nexstar AD 4305 Manual del propietario

AD 4305

RS-485 MULTIPLEXER

Installation and

Operation

5452 Betsy Ross Drive

Santa Clara, CA 95054-1184

(408) 727-5170

FAX (408) 727-6707

P/N 66109923001 Rev. A

DigiReader, QuadraKey, DuraKey, NexKey and NexStar are trademarks of Westinghouse Security Electronics.

Printed in the United States of America.

LIMITED WARRANTY

Westinghouse Security Electronics (WSE) warrants to the original user the equipment

manufactured by WSE as described herein to be free from defects in material and workmanship

for a period of one year from the date of purchase by such user or fifteen (15) months from the

date of shipment from the factory, whichever is sooner (command key / magnetic stripe card

warranties differ, see below), provided:

I WSE has been notified within such period by return of any alleged defective

equipment, free and clear of any liens and encumbrances to WSE or its authorized

dealer at the address specified, transportation prepaid; and

II the equipment has not been abused, misused or improperly maintained and/or

repaired during such period; and

III such defect has not been caused by ordinary wear and tear; and

IV such defect is not a result of voltage surges/brownouts, lightning, water damage/

flooding, fire, explosion, earthquakes, tornadoes, acts of aggression/war, or similar

phenomena; and

V accessories used as integral to WSE systems have been approved by WSE (e.g.,

coaxial cables, batteries, etc.); and

VI the equipment has been installed, the installation supervised or installation tested by

an authorized WSE dealer.

WSE shall at its option, either repair or replace, free of charge, the equipment found, upon

WSEs inspection to be so defective.

WSE MAKES NO OTHER WARRANTY, AND ALL IMPLIED WARRANTIES INCLUDING ANY

WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE

LIMITED TO THE DURATION OF THE EXPRESSED WARRANTY AS SET FORTH ABOVE.

WSES MAXIMUM LIABILITY HEREUNDER IS LIMITED TO THE PURCHASE PRICE OF

THE EQUIPMENT. IN NO EVENT SHALL WSE BE LIABLE FOR ANY CONSEQUENTIAL,

INDIRECT, INCIDENTAL OR SPECIAL DAMAGES OF ANY NATURE ARISING FROM THE

SALE OR USE OF THE EQUIPMENT.

Some states do not allow limitations on incidental or consequential damages or how long an

implied warranty lasts, so the above limitations may not apply. This warranty gives specific legal

rights; however, other rights which vary from state to state, may pertain.

Analog command keys are warranted for 5 years; digital command key / magnetic stripe card

warranties vary. See product literature.

DR 4305 NexStar Installation and Operation

FEDERAL COMMUNICATIONS COMMISSION RADIO FREQUENCY

INTERFERENCE STATEMENT

The NexStar RS-485 Multiplexer sold by Westinghouse Security Electronics has been tested

and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC

Rules. These limits are designed to provide reasonable protection against harmful interference

in a residential installation. This equipment generates, uses and can radiate radio frequency

energy and if not installed and used in accordance with the instructions herein, may cause

harmful interference to radio communications. If this equipment does cause interference to

radio or television reception, consult the dealer or an experienced radio/television technician

for correction.

The user may find helpful the following booklet, prepared by the Federal Communications

Commission: How to Identify and Resolve Radio/TV Interference Problems." This booklet is

available from the US Government Printing Office, Washington DC 20402, stock number: 004-

000-00345-4.

UL-294 Notice

The NexStar RS-485 Multiplexer is UL-294 listed and may be used in a UL-294 listed

access control system. All system components must be UL-294 listed and installed

according to manufacturers' instructions to comply with UL-requirements.

294

P/N 66109923001 Rev A v

IMPORTANT WARNING

Do not connect the NexStar without having carefully read this guide. If this is the first time you have

installed this type of device, have another person check the connections before turning on the power.

The warranty is void if you damage any component because of an error in wiring a connection. Follow

these basic procedures and precautions to avoid damage to the components (local codes and practices

may also apply and must be complied with).

DR 4305 NexStar Installation and Operation

Table of Contents

Scope ................................................................................................................................................... 1

Introduction ........................................................................................................................................... 1

Specifications ........................................................................................................................................ 2

Physical Description .............................................................................................................................. 2

Cover ............................................................................................................................................. 3

Base ............................................................................................................................................... 3

PCA ................................................................................................................................................ 4

LEDs ........................................................................................................................................ 4

Fuses ....................................................................................................................................... 5

Jumpers ................................................................................................................................... 5

Phoenix Connectors ........................................................................................................................ 5

Wire Insertion .......................................................................................................................... 6

S-Net Wiring ................................................................................................................................... 7

Termination .............................................................................................................................. 8

Installation Sequence ............................................................................................................................ 8

Troubleshooting .................................................................................................................................... 9

Communications Errors ............................................................................................................ 9

List of Figures

Figure Description Page

1 S-Net Layout using a NexStar ............................................................................................ 1

2 NexStar ............................................................................................................................. 2

3 Cover Label ....................................................................................................................... 3

4 NexStarBase and Mounting Holes .................................................................................... 3

5 NexStar Printed Circuit Assembly ...................................................................................... 4

6 Transmit LEDs ................................................................................................................. .. 5

7 Termination Jumper ........................................................................................................... 5

8 Connector Pin-Outs ........................................................................................................... 6

9 Wire Insertion .................................................................................................................... 6

10 Drop Wiring ....................................................................................................................... 7

11 S-Net Termination .............................................................................................................. 8

12 Branch Isolation ............................................................................................................... 10

13 Alternate Branch Isolation ................................................................................................ 10

List of Tables

Table Description Page

1 Specifications .................................................................................................................... 2

2 Component Locations ........................................................................................................ 4

3 Approved Fuse Vendors .................................................................................................... 5

4 Recommended S-Net Cable .............................................................................................. 7

5 Troubleshooting ................................................................................................................. 9

P/N 66109923001 Rev. A 1

SCOPE

This manual provides information necessary to install, use and troubleshoot a NexStar RS-485

Multiplexer. It is assumed that the person reading this manual is familiar with access control

systems and standard installation practices. The information provided in this manual is not

intended to conflict with the building, electrical, fire or safety codes required for any given

installation.

INTRODUCTION

The NexStar is a symmetrical 5-port repeater with built-in arbitration logic. Any one port will

relay the data it receives to the other four ports. Bus arbitration is done on a first-come, first-

served basis. During periods of no activity, the NexStar automatically places all 5 ports into the

receive mode to wait for the next message.

The NexStar provides a link between a WSE access control unit, such as the NexSentry or SE

818SC, and multiple S-Net runs. A single S-Net run may be a maximum of 4000 feet (1200

meters). Using all of the NexStar 's five symmetrical ports, the end-to-end S-Net length can

span up to 8000 feet (2400 meters) and contain up to 20,000 feet (6000 meters) of installed

wiring.

4000 FEET

(1200 METERS)

NEXSTAR

DR 4205K

DR 4205

DR 4208

DR 4204

VIP2

MSRK

ACCESS

CONTROL

UNIT

Figure 1: S-Net Layout using a NexStar

DR 4305 NexStar Installation and Operation

In the simplest configuration, the NexStar allows home-run wiring which eliminates excessively

long wire runs and the need to make multiple connections to a single terminal block

SPECIFICATIONS

Specifications for the NexStar are shown in the table below.

Table 1: Specifications

Inp ut Voltag e +15 to +28 VDC

Opera ting Current 50mA

Pass-Thru Current 2A

Operating Humidity 0 to 90%, non-condensin

Operating Temperature -4° F to 50° F -20° C to +50° C

Size 8 in X 4.5 in X 1.5 in 20 cm X 11 cm X 3.5 cm

Weight 13 oz 400

PHYSICAL DESCRIPTION

The NexStar consists of a single printed circuit assembly (PCA) in a two-part housing. Male

Phoenix connectors on the PCA are accessed through the side of the housing for port

connections.

4 PLACES

COVER

PCA

BASE

Figure 2: NexStar

P/N 66109923001 Rev. A 3

COVER

The cover of the NexStar snaps onto the base. The LEDs mounted on the PCA are visible

through holes on the cover. A label identifies the LEDs and pin-out wiring for each port.

COM ACTIVE

TX-1 TX-2 TX-3 TX-4 TX-5

SHIELD

COMMON

DATA

DATA+

+28 VDC

SHIELD

COMMON

DATA

DATA+

+28 VDC

SHIELD

COMMON

DATA

DATA+

+28 VDC

SHIELD

COMMON

DATA

DATA+

+28 VDC

SHIELD

COMMON

DATA

DATA+

+28 VDC

Figure 3: Cover Label

BASE

The base of the housing has four through holes for mounting the NexStar to a wall or other

surface. Four standoffs are affixed to support the PCA.

3.2 in

8.1 cm)

7.29 in

(18.5 cm)

MOUNTING HOLE

4 PLACES

STANDOFF

4 PLACES

Figure 4: NexStar Base and Mounting Holes

DR 4305 NexStar Installation and Operation

PCA

All components and circuitry are contained on the single PCA. Figure 5 shows the board

locations of connectors, fuses, LEDs and jumpers. These components are listed in Table 2 and

further described below.

Figure 5: NexStar Printed Circuit Assembly

Table 2: Component Locations

PCA Location

Label Fu nction LED Connector Jumper Fuse

TX-1 Port 1 Transmit CR18 J5 JP5 F5

TX-2 Port 2 Transmit CR17 J4 JP4 F4

TX-3 Port 3 Transmit CR16 J3 JP3 F3

TX-4 Port 4 Transmit CR15 J2 JP2 F2

TX-5 Port 5 Transmit CR14 J1 JP1 F1

COM ACTIVE Active CR19

LEDS

The COM ACTIVE LED will be illuminated when any data is being passed through the NexStar.

The five port LEDs will illuminate when the associated port is transmitting. On the left side of

Figure 6, the NexStar is receiving data from an ACU on port one. This data is then transmitted

Tabla de contenidos

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