Avery Weigh-Tronix 7821 Manuel utilisateur

Model 7821

User Instructions

AWT35-501542

Issue AA

7821_u_en_501542.book

Avery Weigh-Tronix is a trademark of the Illinois Tool Works group of companies whose ultimate parent company is

No part of this publication may be reproduced by making a facsimile copy, by the making of a copy in three dimensions of a two-dimensional

work and the making of a copy in two dimensions of a three-dimensional work, stored in any medium by electronic means, or transmitted in

any form or by any means, including electronic, mechanical, broadcasting, recording or otherwise without the prior written consent of the

This publication was correct at the time of going to print, however Avery Weigh-Tronix reserves the right to alter without notice the

specification, design, price or conditions of supply of any product or service at any time.

7821 User Instructions 3

Table of Contents

page

Table of Contents ...................................................................................................................................... 3

Chapter 1 General information and warnings ......................................................................................... 5

About this manual ..............................................................................................................5

Text conventions ......................................................................................................... 5

Special messages ....................................................................................................... 5

Installation .......................................................................................................................... 6

Electrical installation .......................................................................................................... 6

Pluggable equipment ................................................................................................... 6

Wet conditions ............................................................................................................. 6

Routine maintenance ......................................................................................................... 7

Cleaning the machine ........................................................................................................ 7

Training .............................................................................................................................. 7

FCC and EMC declarations of compliance ........................................................................ 8

Chapter 2 Specifications ........................................................................................................................... 9

Chapter 3 Unpacking and Installing the Scale ...................................................................................... 10

Chapter 4 Operation ................................................................................................................................ 11

Power Up Test Sequence ................................................................................................ 11

Performing a Normal Weighment ..................................................................................... 11

Chapter 5 Modes of Operation ............................................................................................................... 12

Accessing the Menu ......................................................................................................... 12

Zero and Units Key .................................................................................................... 12

Display ....................................................................................................................... 13

Remote Display ......................................................................................................... 13

Gravity Adjustment ........................................................................................................... 13

Alternative Calibration Span Points ........................................................................... 15

Baud Rate and Parity Options ................................................................................... 15

Scale lb/kg Capacity and Count-by Choices ............................................................. 16

Diagnostics Mode ............................................................................................................ 16

Step-by-Step Instructions for DIAG Mode ................................................................. 17

Configuration Mode .......................................................................................................... 19

Step-by-Step Instructions for CONF Mode ................................................................ 19

Calibration Mode .............................................................................................................. 20

Step-by-Step Instructions for CAL Mode ................................................................... 20

Gravity Mode .................................................................................................................... 22

Chapter 6 Communication ...................................................................................................................... 23

Interface Cable ................................................................................................................. 23

Serial Communications Protocol ...................................................................................... 24

NCI Communications Protocol ......................................................................................... 25

Chapter 7 Error Codes and Troubleshooting ........................................................................................ 27

Troubleshooting ............................................................................................................... 28

Chapter 8 Spare parts ............................................................................................................................. 30

4 7821 User Instructions

7821 User Instructions 5

1.1 About this manual

1 General information and warnings

1.1 About this manual

This manual is divided into chapters by the chapter number and the large text at the top

of a page. Subsections are labeled as shown by the 1.1 and 1.1.1 headings. The

names of the chapter and the next subsection level appear at the top of alternating

pages of the manual to remind you of where you are in the manual. The manual name

and page numbers appear at the bottom of the pages.

1.1.1 Text conventions

Key names are shown in bold and reflect the case of the key being described. This

applies to hard keys and on-screen or soft keys.

Displayed messages appear in bold italic type and reflect the case of the displayed

message.

1.1.2 Special messages

Examples of special messages you will see in this manual are defined below. The

heading words have specific meanings to alert you to additional information or the

relative level of hazard.

ELECTRICAL WARNING!

THIS IS AN ELECTRICAL WARNING SYMBOL.

ELECTRICAL WARNINGS MEAN THAT FAILURE TO FOLLOW

SPECIFIC PRACTICES OR PROCEDURES MAY RESULT IN

ELECTROCUTION, ARC BURNS, EXPLOSIONS OR OTHER HAZARDS

THAT MAY CAUSE INJURY OR DEATH.

CAUTION!

This is a Caution symbol.

Cautions give information about procedures that, if not observed, could result

in damage to equipment or corruption to and loss of data.

NOTE: This is a Note symbol. Notes give additional and important information, hints

and tips that help you to use your product.

6 7821 User Instructions

General information and warnings

1.2 Installation

1.3 Electrical installation

1.3.1 Pluggable equipment

Pluggable equipment must be installed near an easily accessible socket outlet.

1.3.2 Wet conditions

Under wet conditions, the plug must be connected to the final branch circuit via an

appropriate socket / receptacle designed for washdown use.

Installations within the USA should use a cover that meets NEMA 3R specifications

as required by the National Electrical Code under section 410-57. This allows the unit

to be plugged in with a rain tight cover fitted over the plug.

Installations within Europe must use a socket which provides a minimum of IP56

protection to the plug / cable assembly. Care must be taken to make sure that the

degree of protection provided by the socket is suitable for the environment.

DANGER: RISK OF ELECTRICAL SHOCK. NO USER SERVICEABLE

PARTS. REFER TO QUALIFIED SERVICE PERSONNEL FOR SERVICE.

CAUTION: Installation, configuration, and servicing are only to be done by

qualified service personnel as authorized by Avery Weigh-Tronix.

CAUTION: The socket-outlet shall be installed near the equipment and shall

be easily accessible.

The electrical supply must have a circuit breaker with an appropriate rating to

protect from over-current conditions.

For your protection, all electrical (110V or 230V) equipment used out of doors

or in wet or damp conditions should be supplied from a correctly fused power

source and protected by an approved ground fault protection device (RCD,

GFCI etc.)

IF IN DOUBT SEEK ADVICE FROM A QUALIFIED ELECTRICIAN.

7821 User Instructions 7

1.4 Routine maintenance

Always turn off the machine and isolate from the power supply before starting any

routine maintenance to avoid the possibility of electric shock.

1.5 Cleaning the machine

1.6 Training

Do not attempt to operate or complete any procedure on a machine unless you have

received the appropriate training or read the instruction books.

To avoid the risk of RSI (Repetitive Strain Injury), place the machine on a surface which

is ergonomically satisfactory to the user. Take frequent breaks during prolonged usage.

IMPORTANT: This equipment must be routinely checked for proper operation

and calibration.

Application and usage will determine the frequency of calibration required for

safe operation.

Table 1.1 Cleaning DOs and DON’Ts

DO DO NOT

Wipe down the outside of

standard products with a

clean cloth, moistened with

water and a small amount of

mild detergent

Attempt to clean the inside of

the machine

Use harsh abrasives,

solvents, scouring cleaners

or alkaline cleaning solutions

Spray the cloth when using a

proprietary cleaning fluid

Spray any liquid directly on to

the display windows

8 7821 User Instructions

General information and warnings

1.7 FCC and EMC declarations of compliance

United States

Canada

European Countries

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 digital apparatus does not exceed the Class A limits for radio noise emissions from

digital apparatus set out in the Radio Interference Regulations of the Canadian Department

of Communications.

Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les limites

applicables aux appareils numériques de la Classe A prescrites dans le Règlement sur le

brouillage radioélectrique edicté par le ministère des Communications du Canada.

WARNING: This is a Class A product. In a domestic environment, this product may cause

radio interference in which the user may be required to take adequate measures.

7821 User Instructions 9

2 Specifications

Capacity/Resolution

Approvals

Model 7821-70, 7821-75 and 7821-100

USA: NTEP COC #95-070

Canada: Ministry of Industry #AM5076

Zero Window

Initial automatic zero setting is ±10% of maximum capacity—active at power up.

Manual zero setting range is ±2% of maximum capacity—active using the ZERO key.

Transformer Voltage

Input: 120 VAC +10%, -15% Standard 3 wire w/ground

Output: 15 VDC @.3 Amps DC minimum

Frequency

60 Hz Standard

Power Requirements

0.1 amp maximum

Model Capacity (lb) Capacity (kg) Divisions

7821-70 150 x 0.05 lb 60 x 0.02 kg

70 x 0.02 kg

3000d

3500d

7821-75 150 x 0.02 lb 75 x 0.02 kg

75 x 0.01 kg

3750d

7500d

7821-100 200 x 0.05 lb -

100 x 0.02 kg

4000d

5000d

10 Product Name Manual Type

Unpacking and Installing the Scale

3 Unpacking and Installing the Scale

Unpacking the Scale

1. Remove contents of the shipping container.

2. Inspect the scale for evidence of shipping damage. Immediately report any

damage to the shipper.

Installing the Scale

Mount the scale on a stable, level surface that is free from air currents and vibration.

Be sure the scale platter does not touch any adjacent surfaces.

Cutout Dimensions

To install the scale surface flush with a countertop, use these dimensions to guide your

construction:

7821Platform Minimum Cutout

Dimensions Dimensions

14" (35.6cm) W x 14.75" (37.5cm) W x

12.5" (31.7cm) L 13.25" (33.7cm) L

4.1" (10.4cm) Min Ht.

adjustable to 4.6" (11.7cm)

Attaching VelcroTM Fasteners (optional)

For the optional remote display, attach Velcro™ fasteners to both the back of the

display and to the surface where the display is to be mounted. To attach the Velcro

fasteners, clean the mounting areas thoroughly and press the Velcro into place. The

adhesive adheres best to a smooth, clean surface.

Velcro is a registered trademark of Velcro USA, Inc.

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