Salter Brecknell WB-521 User Manual

SBI-521

Indicator Series

Service Manual

AWT35-500811 Issue AF January 2013

© Brecknell, LLC 2013. All rights reserved.

No part of this publication may be reproduced, stored in an electronic retrieval system, or transmitted in any form
or by any means, electronic, mechanical, photocopying, recording or otherwise without the prior written consent of
the copyright owner, or as permitted by law or under license. Full acknowledgment of the source must be given.
Brecknell is a registered trade mark of the Brecknell, LLC. This publication was correct at the time of going to print
however, Brecknell, LLC reserves the right to alter without notice the specification, design, price or conditions of
supply of any product or service at any time.

All third party brands and product names used within this document are trademarks or registered trademarks of
their respective holders.

SBI521_s_en_500811.book

Table of Contents

Manual revision history ............................................................................................................................. 4

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

About this Manual ..............................................................................................................5

Text Conventions ........................................................................................................ 5

Special Messages ....................................................................................................... 5

Warnings ............................................................................................................................ 6

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

Charge the Battery ...................................................................................................... 6

Connections ....................................................................................................................... 7

Weigh Platform or Loadcell Connections .................................................................... 8

RS-232 Serial Port Connections ................................................................................. 9

RS-485 Serial Port Connections ............................................................................... 10

Power Supply Connections ....................................................................................... 10

Sockets and Jumpers ...................................................................................................... 11

Definition of Sockets and Jumpers ............................................................................ 11

Communication Jumpers ........................................................................................... 12

Routine Maintenance ....................................................................................................... 13

Sharp Objects ..................................................................................................................13

Cleaning the Indicator ...................................................................................................... 13

Chapter 2 Specifications ......................................................................................................................... 14

SBI-521 Series Models .................................................................................................... 14

Housing and Outline Dimension ...................................................................................... 14

Housing ..................................................................................................................... 14

Outline Dimension ..................................................................................................... 14

Power Supply ...................................................................................................................15

Display ............................................................................................................................. 15

Keypad ...................................................................................................................... 15

Environment ............................................................................................................. 15

Load Cell Excitation ................................................................................................... 15

Communication ................................................................................................................ 16

Analog Circuitry ................................................................................................................ 16

Capacity and Division ...................................................................................................... 16

Accuracy .......................................................................................................................... 16

Approvals ......................................................................................................................... 16

Calibration Method: .......................................................................................................... 16

Real Clock ........................................................................................................................ 17

Other Main Functions ....................................................................................................... 17

Chapter 3 Configuration .......................................................................................................................... 18

Front Panel ...................................................................................................................... 18

LED Version .............................................................................................................. 18

LCD Version .............................................................................................................. 19

Display ............................................................................................................................. 19

LED ........................................................................................................................... 19

LCD ........................................................................................................................... 20

Keyboard .......................................................................................................................... 21

Navigating the Weigh Mode ............................................................................................. 23

Change the Working Mode ........................................................................................ 23

Enter or Exit the HOLD Mode .................................................................................... 23

Zero ...........................................................................................................................23

Tare ...........................................................................................................................23

Preset Tare Weight ................................................................................................... 23

Clear Tare Weight ..................................................................................................... 23

SBI521 Service Manual 1

Output Data ............................................................................................................... 24

Display Gross or Net Weight ..................................................................................... 24

Change Weight Unit .................................................................................................. 24

Check Weight ............................................................................................................ 26

Navigating the Count Mode ............................................................................................. 26

Enter Count Mode ..................................................................................................... 27

Obtain Piece Weight .................................................................................................. 27

Check Counts (counts compare) in Counting mode: ................................................. 28

Percent Weigh Mode ....................................................................................................... 28

Enter Percent Weighing Mode .................................................................................. 28

Obtain Percentage Weight ........................................................................................ 29

Check Percent (percentage compare) in Percent Weighing Mode ........................... 30

Hold Function ................................................................................................................... 30

Activate the Hold Function ........................................................................................ 31

Access the Hold Mode .............................................................................................. 31

Hold Methods ............................................................................................................ 31

Hold Annunciators ..................................................................................................... 32

Data Compare Function ................................................................................................... 32

Enable Data Compare Function ................................................................................ 33

View Data Compare Function ................................................................................... 33

Accumulation ...................................................................................................................33

Enable Accumulation ................................................................................................. 34

Display and Set Time ....................................................................................................... 34

Display and Set Date ....................................................................................................... 35

Display Firmware Version ................................................................................................ 35

Display Interface Type of COM2 ...................................................................................... 36

Display Test ..................................................................................................................... 36

Keyboard and Buzzer Test .............................................................................................. 36

Serial Port1/2 (COM1/2) Receiving Test .......................................................................... 37

Serial Port1/2(COM1/2) Transmitting Test ....................................................................... 37

Chapter 4 Setup Mode ............................................................................................................................. 38

Entering the Setup Menu ................................................................................................. 38

Navigating the Setup Menu .............................................................................................. 38

Setup Menu Parameters .................................................................................................. 40

Config Menu .............................................................................................................. 40

User Menu ................................................................................................................. 44

Cal Menu ................................................................................................................... 52

Misc Menu ................................................................................................................. 53

Test Menu ................................................................................................................. 53

Exit the Setup Menu ......................................................................................................... 54

Chapter 5 Calibration .............................................................................................................................. 55

Calibration Mode .............................................................................................................. 55

Weight Fine-tune .............................................................................................................. 56

Display ADC Output Code ............................................................................................... 57

Display and Calibrate Power Voltage .............................................................................. 57

Chapter 6 Serial Communication ........................................................................................................... 59

Com Port 1 ....................................................................................................................... 59

Com Port 2 ....................................................................................................................... 59

Protocol ............................................................................................................................ 59

Transaction String ............................................................................................................ 59

Commands and response ................................................................................................ 61

Single ........................................................................................................................ 61

Multiple ...................................................................................................................... 63

CONFIG-AD.FROM=COM2 ...................................................................................... 64

Communication when USER-COM1/2-LAYOUT is set to 200S/200F: ...................... 65

2 SBI521 Service Manual

Chapter 7 Legal for Trade ....................................................................................................................... 68

Configuration/Calibration Switch ...................................................................................... 68

Audit Trail Parameters ..................................................................................................... 69

View Configuration Counter ...................................................................................... 69

View Calibration Counter ........................................................................................... 69

Chapter 8 Troubleshooting ..................................................................................................................... 70

Display Characters ........................................................................................................... 70

Display Symbols .............................................................................................................. 71

Error Messages and Troubleshooting .............................................................................. 72

Addendum 1: Quick Setup and Configuration ...................................................................................... 73

Configure the SBI-521 to a Floor Scale ........................................................................... 73

Setting the Capacity and Count by ............................................................................ 73

Loadcell Connection and Jumpers ............................................................................ 74

Addendum 2: SBI-521 Calibration .......................................................................................................... 76

Addendum 3: Drum Weigher Setup ....................................................................................................... 78

SBI521 Service Manual 3

Manual revision history

Current

Issue

AD November 2012 previous revision 1.3 done as a Word document. Issue AD has been converted to FrameMaker.

AE January 2013 update menu tables with added parameters and LED font. Add Addendum 3 - Drum Weigher

AF January 2013 correct some errors.

Date Created Details of Changes

Legal for Trade chapter and addendum 1 and 2 were added.

Setup. Add more print formats.

4 SBI521 Service 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 and 1.1 headings shown above.
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

The keys used to interface with the SBI-521 are located on the front panel of the
indicator. The keystrokes are shown in BOLD incased between brackets. (e.g. [ZERO])

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
signal words have specific meanings to alert you to additional information or the relative

level of hazard.

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.

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.

NOTE: This is a Note symbol. Notes give additional and important information, hints
and tips that help you to use your product.

SBI521 Service Manual 5

1.2 Warnings

1.3 Installation

DANGER: RISK OF ELECTRICAL SHOCK. BE SURE TO UPLUG THE
INDICATOR BEFORE REMOVING THE COVER OR OPENING THE UNIT.
REFER TO QUALIFIED SERVICE PERSONNEL FOR SERVICE.

l Avoid lengthy exposure to extreme heat or cold. Your scale works best when

operated at normal room temperature. Always allow the scale to acclimate to
a normal room temperature before use.

l Allow sufficient warm up time. Turn the scale on and wait for a few minutes if

possible. This will give the internal components a chance to stabilize before
weighing.

l These electronic scales are precision instruments. Do not operate near an

in-use cell phone, radio, computer or other electronic device. These devices
emit RF and can cause unstable scale readings. If your scale ever performs
poorly, try moving the scale to a different room or location.

l Avoid using in heavy vibration and airflow conditions.

l Read the weight reading in short time after loading. The output signature of

load cell and electronic circuit may be little influenced after weighing for a
long time.

1. Unpack the indicator and all components from the shipping box.

2. Remove all back panel screws to expose the indicator main board.

3. Insert the loadcell cable through the loadcell strain relief gland.

4. Connect the loadcell cable to the indicator via the loadcell connector. Refer to
section 1.4.1 for connection details.

5. Connect all other cables be used. Refer to the respective sections for
connection details.

6. Place back panel on the rear of the indicator and fasten it with the back panel
screws.

1.3.1 Charge the Battery

If you have a Model SBI-521 LED or SBI-521 LCD, the battery may need to be charged.

1. Take the indicator to a power outlet located indoors.

2. Attach one end of the charger unit to the underside of the indicator and plug
the other end of the charger unit to the power outlet.

It will take approximately 12 hours to fully charge the 6 volt 2.8Ah battery.

6 SBI521 Service Manual

CAUTION: Danger of explosion if battery is incorrectly replaced. Replace only

Power

Com 1/2

Loadcell

Config/Cal Switch Seal

Power

Com 1/2 Loadcell

with back cover

without back cover

with the same or equivalent type recommended by the manufacturer. Dispose
of used batteries according to the manufacturer’s instructions.

ATTENTION: Il y a danger d'explosion s'il y a remplacement incorrect de la
batterie, remplacer uniquement avec une batterie du même type ou d'un type
équivalent recommandé par le constructeur. Mettre au rebut les batteries
usagées conformément aux instructions du fabricant.

1.4 Connections

The rear cover of the stainless steel enclosure must first be removed to make the
appropriate connections to the weigh platform, printer, remote display and power
supply.

To gain access to the connectors, remove the rear panel screws on the back of the
indicator.

Figure 1.1 Back View of Indicator

SBI521 Service Manual 7

Figure 1.2 Main Board

1

7

E+

SE+

E-

SE-

S+

S-

SFG

1.4.1 Weigh Platform or Loadcell Connections

Connect the loadcell cable to the loadcell connector on the main board. Connection
assignments for the loadcell connector are shown in Figure 1.3. Refer to Table 1.2 on

page 9 for loadcell jumper configuration.

Figure 1.3 Loadcell Connector

Table 1.1 Loadcell Connections

Board

Designaltion

E+ + excitation 1

SE+ + sense 2

E- - excitation 3 0 VDC

SE- - sense 4 ≤0.5 VDC

S+ + signal 5

S- - signal 6

SFG ground/shield 7 N/A

8 SBI521 Service Manual

Description Pin Electrical Level

5

±0.3 VDC (≤0.12A)

5

±0.3 VDC

2.5

±0.3 VDC

2.5

±0.3 VDC

Loadcell Jumper

1

6

TX2
RX2

GND

GND

TX1
RX1

Set JP3 jumpers for either a 4-wire or 6-wire loadcell.

Table 1.2 Loadcell Jumper Connector(JP3)

Connected Pins Function

1.4.2 RS-232 Serial Port Connections

The SBI-521 indicator comes standard with two full Bi-directional RS-232 serial ports
designed for connection to either a PC or a serial printer.

4 wire loadcell is used

6 wire loadcell is used

Connect the serial printer or computer to the RS-232 terminal on the main board.
Communication terminal connections are shown in Figure 1.4. Refer to Table 1.10 and

Table 1.11 on page 12 for COM2 jumpers..

Figure 1.4 RS-232 Connector

Table 1.3 RS-232 Port Connections

Designation Description Pin Electrical Level

RX1 port 1 receive 1 -12 to +12 VDC

TX1 port 1 transmit 2 -12 to +12 VDC

GND ground/common 3 0 VDC

GND ground/common 4 0 VDC

RX2 port 2 receive 5 -12 to +12 VDC

TX2 port 2 transmit 6 -12 to +12 VDC

SBI521 Service Manual 9

1.4.3 RS-485 Serial Port Connections

1

GND

B
A

3

The SBI-521 indicator comes standard with one RS-485 network port designed for local
networks and multidrop communication links. Refer to Table 1.10 and Table 1.11 on

page 12 for COM2 jumpers.

Figure 1.5 RS-485 Connection

Table 1.4 RS-485 Port Connections

Designation Description Pin Electrical Level

A RS-485 signal A 1 0 - 5 VDC

B RS-485 signal B 2 0 - 5 VDC

GND ground/common 3 0 VDC

Table 1.5 Termination Resistor Jumper (JP4)

Connected Pins Function

1-2 RS485 terminal 120ohm resistor on board is disabled

2-3 RS485 terminal 120ohm resistor on board is enabled

1.4.4 Power Supply Connections

The SBI-521 comes standard with an external AC to DC power adapter. Simply plug
the AC adapter into the indicator DC power jack and then plug into a standard wall

outlet.

IMPORTANT: Make sure that the AC voltage appearing at the wall outlet
matches the input voltage marked on the AC adapter.

Table 1.6 Adapter Power Input Connector (ADP)

Pin Definition In/Out/Power Electrical Level

1 Adapter input voltage + Power input 12VDC (10.5-15VDC, ≥0.5A)

2 Adapter input voltage - (GND) Power ground 0Vdc

3 Shell Earth N/A N/A

Table 1.7 Battery Power Input Connector (BAT)

Pin Definition In/Out/Power Electrical Level

1 Battery input voltage + Power input 5.6-7.2Vdc (6V/2.8AH lead acid battery)

2 Battery input voltage -(GND) Power ground 0Vdc

10 SBI521 Service Manual

1.5 Sockets and Jumpers

Figure 1.6 shows main board connectors for the loadcell, printer or computer, power

supply and battery..

Figure 1.6 SBI-521 Main Circuit Board

1.5.1 Definition of Sockets and Jumpers

Table 1.8 ADP - Adapter Power Input Connector

Pin # Definition In/Out/Power Electrical Level

1 Adapter input voltage + Power input

2 Adapter input voltage - (GND) Power ground 0Vdc

3 Shell Earth

Table 1.9 Battery Power Input Connector

Pin # Definition In/Out/Power Electrical Level

1 Battery input voltage + Power input 5.6-7.2Vdc (6V/4.0AH lead acid battery)

2 Battery input voltage - (GND) Power ground 0Vdc

12Vdc(10.5-15Vdc,

≥0.5A)

SBI521 Service Manual 11

1.5.2 Communication Jumpers

Jumpers on JP8.

RXD2 and TXD2 will need to be set to the desired configuration.

Table 1.10 JP8 Connector

Connected Pins Function

COM2 is used as RS-232

COM2 is used as RS-485

COM2 is not used

COM2 is not used

Table 1.11 RXD2 and TXD2 Jumper Connectors

Connected Pins

Function

TXD2 RXD2

COM2 is not used

COM2 is used as RS-232

COM2 is used RS-485

12 SBI521 Service Manual

1.6 Routine Maintenance

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.

Always turn off the machine and isolate from the power supply before starting any
routine maintenance to avoid the possibility of electric shock.

1.7 Sharp Objects

Do not use sharp objects such as screwdrivers or long fingernails to operate the keys.

1.8 Cleaning the Indicator

Table 1.12 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

Spray the cloth when using a proprietary
cleaning fluid

Attempt to clean the inside of the indicator

Use harsh abrasives, solvents, scouring cleaners or
alkaline cleaning solutions

Spray any liquid directly on to the display window

SBI521 Service Manual 13

2 Specifications

2.1 SBI-521 Series Models

Model Description

SBI-521 LED Version, 6V4.0AH lead-acid rechargeable battery is installed

SBI-521 LCD version, 6V4.0AH lead-acid rechargeable battery is installed

2.2 Housing and Outline Dimension

2.2.1 Housing

IP65 wash-down stainless steel housing with rotary bracket.

2.2.2 Outline Dimension

l With bracket: 10.31" x 8.46" x 3.45" (262mm x 215mm x 85mm)

l Without bracket: 8.66" x 6.30" x 3.07" (220mm x 160mm x 78mm)

Figure 2.1 SBI-521Outline Drawing

14 SBI521 Service Manual

2.3 Power Supply

l 100 - 240 VAC, 50/60 Hz AC adapter

l 6V 4.0AH lead-acid rechargeable battery

l Battery charging Circuit: built-in

Model Working Current

2.4 Display

2.4.1 Keypad

2.4.2 Environment

Working temperature -10°C to 40°C

Storage temperature -20°C to 70°C

Humidity 10 to 90% RH without condensation

Protection IP65

SBI-521

SBI-521

l SBI-521: 7-digits,7-segment, 0.7'' (17mm) ultra brightness LEDs with 16

annunciators

l SBI-521: 6-digit,7-segment, 1"(25mm) LCDs with 16 annunciators and

backlight

l 6 push buttons

≤100mA (use battery, no load-cell, no adaptor, LED.BRT is set to 2)

≤45mA (use battery, no load-cell, no adapter, backlight is on)

2.4.3 Load Cell Excitation

Voltage 5VDC

Max. Current 120mA (can power 8-350 ohm bridge)

Signal connection 4 or 6 lead with sense leads

Max Sensitivity -3mV/V to +3mV/V

SBI521 Service Manual 15

2.5 Communication

Serial port1 Full-duplex RS-232

Serial port2 Full-duplex RS-232 or half-duplex RS-485

Baud Rate Selectable: 1200-2400-4800-9600-19200-22800/38400-57600 bps

Data Output Format 8N1, 7O1, 7E1

Protocol programmable

2.6 Analog Circuitry

l 24-bit A/D converter

l Conversion Speed: 10Hz or 80Hz

l Input range: -15mV to +15mV

l Output code:1mV input between S+ and S- of loadcell connector will output

about 100,000 raw counts

l Hardware low pass filter and 2 programmable digital low pass filters

2.7 Capacity and Division

l Programmable

l Max display range: -999,999 to 999,999

l Division number range for primary unit: 100-100,000 (division number will be

limited by REGULA setting)

l Recommended Sensitivity: >0.5uV/ display division

2.8 Accuracy

≤0.01%

2.9 Approvals

NTEP: Class III, certificate # 11-119

2.10 Calibration Method:

l Software calibration with long-term storage in EEPROM

l Provides smooth curve fit through four points

l Calibration can be done under kg or lb weight unit with 10% -100%FS

standard weight.

16 SBI521 Service Manual

2.11 Real Clock

l Built-in nonvolatile real time & date

2.12 Other Main Functions

l Programmable zero range

l Programmable pre-set tare weight

l Programmable automatic zero point tracking

l Programmable motion detection window

l Programmable auto-power off time, backlight working mode (LCD version)

and adjustable LED brightness (LED Version)

l Programmable hold function with peak weight holding and dynamic weighing

l Available check weighing mode

l Available parts counting mode

l Available percentage working mode

l Available units of measure: kg, lb, lb:oz, PCS, %

l Battery voltage display and charge indication

l Programmable serial output content

SBI521 Service Manual 17

3 Configuration

Class

III

Brecknell

Max

d=

To set up the indicator, you must first enter the appropriate menu mode. The front panel
keys become directional navigators to move around in the menus. See Table 3.3 for
details.

3.1 Front Panel

The front panel incorporates the display and keypad.

3.1.1 LED Version

18 SBI521 Service Manual

3.1.2 LCD Version

Class

III

Max

Brecknell

d=

lb:oz
kg

PeakTotalNET Hold

Max

d=

3.2 Display

The Model SBI-521 indicator utilizes a 6-digit LCD (Liquid Crystal Display) or a 7 -digit
LED display providing the weight and system information.

3.2.1 LED

The annunciators used with the LED model surround the display. The annunciator will
be lit went the mode is active.

Figure 3.1 LED Display

SBI521 Service Manual 19

Table 3.1 LED Display Annunciators and Definitions

lb:oz
kg

PeakTotalNET

Hold

LED Annunciator Description

ZERO Better known as the "Center of Zero" annunciator. It is lit whenever the displayed weight is

within ± 0.25 divisions of true zero.

MOTION Illuminates when weight is within motion band.

PEAK/HOLD (1) flashing/not flashing: working HOLD mode and displaying number is/isn't live

(2) red/green: working in HOLD mode and HOLD type is/isn't PEAK-HOLD.

TOTAL Display data is total times or total of weight, pieces or percentage.

NET Indicates current weight is in the net mode and the tare weight is not 0.

GROSS Indicates current weight is in the gross mode.

TARE Indicates current weight is in the tare mode.

Pcs indicates counting mode.

AC/CHG Illuminates red when battery is being charged or green if battery is fully charged or not

installed.

lb Indicates the current unit of measure is lb.

oz Indicates the current unit of measure is oz.

kg Indicates the current unit of measure is kg.

% Indicates the current unit of measure is in percentage weighing mode.

HI Illuminates when data compare is enabled and current data (weight, pieces or percent) is

over the specified upper limit.

OK Illuminates when data compare is enabled and current data (weight, pieces or percent) is

between the specified upper and lower limits.

LO Illuminates when data compare is enabled and current data (weight, pieces or percent) is

over the specified lower limit.

3.2.2 LCD

The annunciators used with the LCD model are incorporated in the display. The
annunciator will be lit went the mode is active.

Figure 3.2 LCD Display

20 SBI521 Service Manual

Table 3.2 LCD Display Annunciators and Definitions

LCD Annunciator Description

Better known as the "Center of Zero" annunciator. It is lit whenever the displayed weight is
within ± 0.25 divisions of true zero.

Illuminates when weight is within motion band.

Hold Flashes when hold key is pressed. Remains permanently on when the Hold function has

become activated.

Peak Indicates peak hold mode.

Total Display data is total times or total of weight, pieces or percentage.

NET Indicates net mode and the tare weight is not 0.

GROSS Indicates gross mode when arrow above GROSS is illuminated.

TARE Indicates tare mode when arrow above TARE is illuminated.

Pcs indicates counting mode.

When battery is being used or charged.

lb Indicates the current unit of measure is lb.

oz Indicates the current unit of measure is oz.

kg Indicates the current unit of measure is kg.

% Indicates the current unit of measure is in percentage weighing mode.

HI Illuminates when data compare is enabled and current data (weight, pieces or percent) is

over the specified upper limit.

OK Illuminates when data compare is enabled and current data (weight, pieces or percent) is

between the specified upper and lower limits.

LO Illuminates when data compare is enabled and current data (weight, pieces or percent) is

over the specified lower limit.

3.3 Keyboard

The keyboard consists of six keys, some of which have multiple functions.

Figure 3.3 SBI-521 Keypad

SBI521 Service Manual 21

Table 3.3 Function of the Keys

Key Mode Condition Function

Weigh, count or percent Press for less than 3 seconds Enter or exit HOLD mode

Weigh, count or percent Press for more than 3 seconds Enter setup mode

Input data Press for more than 3 seconds Input decimal point

Input data Press for less than 3 seconds Return to sub menu

Setup Press for more than 3 seconds Exit setup. Refer to page 54

Weigh, count or percent Press for less than 3 seconds Output data to serial communication port

Weigh, count or percent Press for more than 3 seconds Select working mode (weigh, count or

percent)

Input data Press to enter data one will be subtracted from the flashing

digit.

Setup Menu selection mode Next item of current menu

Weigh, count or percent Press for less than 3 seconds To display net weight or gross weight

mode

Weigh, count or percent Press for more than 3 seconds To add up current weight/pieces/

percentage to memory, display times and
total of accumulation

Input data Press to enter data one will be added to the flashing digit.

Setup Menu selection mode To last item of current menu

Weigh Press for less than 3 seconds Change weigh units

Count or percent Press for less than 3 seconds To enter a piece weight or unit

percentage weight (by way of sample or
input directly)

Weigh, count or percent Press for more than 3 seconds To input compare data (for weight, pieces

or percentage) of high and low limitation

Setup Input data mode Rotate the flashed position from left to

right

Weigh, count or percent Press for less than 3 seconds Tare function

Weigh, count or percent Press for more than 3 seconds Input preset tare weight

Input data or setup Input data or select menu Confirm input data or current item

selection and go to next item of current
menu or next operation

Indicator is off Power on

Weigh, count or percent Press for less than 3 seconds Zero function

Weigh, count or percent Press for more than 3 seconds Power off

Setup Input data mode ignore modification

Setup Menu selection mode Prepare to exit from current working

mode

22 SBI521 Service Manual

3.4 Navigating the Weigh Mode

3.4.1 Change the Working Mode

Press the [FUNC] key for 3 seconds. Use the [FUNC] key to choose and confirm entry
into weighing mode, counting mode or percentage working mode. The count and/or
percentage mode must be set to yes in the FUNC menu within the setup mode.
Otherwise the indicator will only show the weighing mode. Refer to page 28 for details.

3.4.2 Enter or Exit the HOLD Mode

Press the [HOLD] key.

3.4.3 Zero

When the weight is stable and within the zero range, press the [ZERO] key to set a new
zero point. Refer to Table 3.4 for zero limitations.

3.4.4 Tare

When the gross weight is larger than zero and the scale is stable, press the [TARE]
key. The indicator will show a net weight of zero and the NET annunciator will be
illuminated. Refer to Table 3.4 for tare limitations.

3.4.5 Preset Tare Weight

Enter a preset tare weight by pressing the [PRESET] key for more than 3 seconds.
Pr.Tare will be displayed and the TARE annunciator flashes. Use the up and down
arrow keys to input the desired tare weight and the right arrow key to move to the next
digit. The value entered must be larger than zero and there is no limitation to preset
tare weight. After the tare weight is entered the NET annunciator will illuminate. Refer
to Table 3.4 for tare limitations.

Note: This indicator can only save one tare weight. The new tare weight will
automatically replace the old one.

3.4.6 Clear Tare Weight

Remove any weight on platform and wait until the scale is stable. Press the [TARE] key.

SBI521 Service Manual 23

Table 3.4 Zero and Tare Limitations

Standard

USA ≤0 no No action Zero

Canada ≤0 no No action Zero

Europe

None

(same with Europe)

Weight on

platform

>0 no Tare

>0 no Tare

≤0 no No action Zero

>0 no Tare Zero

≤0 no No action Zero

>0 no Tare Zero

Data in TARE

memory unit

yes Clear the tared weight

yes

yes Clear the tared weight

yes No action

yes Clear the tared weight Zero and clear the

yes Zero and clear the

yes Clear the tared weight Zero and clear the

yes Zero and clear the

Tare key Zero key

key function

tared weight

tared weight

tared weight

tared weight

3.4.7 Output Data

When scale is stable press the [PRINT] key.

3.4.8 Display Gross or Net Weight

If the tare weight is not zero, press the [N/G] key to display NET weight or GROSS
weight.

If the tare weight is zero, GROSS weight will be displayed.

3.4.9 Change Weight Unit

Press the [UNIT] key to select kg, lb or lb:oz. Note: under some conditions lb:oz is not
available. Please refer the following tables.

24 SBI521 Service Manual

Table 3.5 Use kg as Primary Unit

Calibration

Division Value

kg lb lb:oz

Display Division Value

0.0001kg 0.0001kg 0.0002lb Not available

0.001kg 0.001kg 0.002lb Not available

0.01kg 0.01kg 0.02lb 0.5oz

0.1kg 0.1kg 0.2lb Not available

1kg 1kg 2lb Not available

10kg 10kg 20 lb Not available

0.0002kg 0.0002kg 0.0005 lb Not available

0.002kg 0.002kg 0.005 lb 0.1 oz

0.02kg 0.02kg 0.05 lb 1 oz

0.2kg 0.2kg 0.5 lb Not available

2kg 2kg 5 lb Not available

20kg 20kg 50 lb Not available

0.0005kg 0.0005kg 0.001 lb Not available

0.005kg 0.005kg 0.01 lb 0.2 oz

0.05kg 0.05kg 0.1 lb 2oz

0.5kg 0.5kg 1 lb Not available

5kg 5kg 10 lb Not available

50kg 50kg Not available Not available

Table 3.6 Use lb as Primary Unit

Calibration

Division Value

kg lb lb:oz

Display Division Value

0.0001lb Not available 0.0001lb Not available

0.001 lb 0.0005 kg 0.001 lb Not available

0.01 lb 0.005 kg 0.01 lb 0.2 oz

0.1 lb 0.05 kg 0.1 lb 2 oz

1 lb 0.5 kg 1 lb Not available

10 lb 5 kg 10 lb Not available

0.0002 lb 0.0001 kg 0.0002 lb Not available

0.002 lb 0.001 kg 0.002 lb Not available

0.02 lb 0.01 kg 0.02 lb 0.5 oz

0.2 lb 0.1 kg 0.2 lb Not available

2 lb 1 kg 2 lb Not available

20 lb 10 kg 20 lb Not available

0.0005 lb 0.0002 kg 0.0005 lb Not available

SBI521 Service Manual 25

3.4.10 Check Weight

To make the weight compare function be available, CONFIG-FUNC-COMPAR item
should set to YES. The high and low limitation of weight should be set correctly
according to following steps:

1. In weighing mode, press the [DATA] key more than 3 seconds.

2. The unit setting will be shown (Unit.kg, Unit.lb). Use the [UNIT] key to change
the unit or the [TARE] key to continue.

3. After the HIGH parameter is accessed, 000000 will be displayed. Use the
[PRINT], [N/G] and [UNIT] keys to input the high weight value.

Calibration

Division Value

0.005 lb 0.002 kg 0.005 lb 0.1 oz

0.05 lb 0.02 kg 0.05 lb 1 oz

0.5 lb 0.2 kg 0.5 lb Not available

5 lb 2 kg 5 lb Not available

50 lb 20 kg 50 lb Not available

kg lb lb:oz

Display Division Value

4. Press the [TARE] key to confirm the entry. The HI annunciator will be on.

5. Press the [ZERO] key to go to the low value.

6. After Low is accessed, 000000 will be displayed. Use the [PRINT], [N/G] and
[UNIT] keys to input low weight number.

7. Press the [TARE] key to confirm. The LO annunciator will be displayed.

7a. After a reasonable limitation is set and compare is active, one of annunciators

HI, OK, LO will be illuminated. The beeper will sound according to its setting in
USER-BEEP.

NOTE: If the High number value is 0 or is equal or less than low number, the
comparison will be disabled, and the input data has no limitation.

3.5 Navigating the Count Mode

1. In this mode, the scale will weigh goods, calculate and display its counts after
the piece weight of the goods is obtained. The count function must be enabled
in the setup mode. The CONFIG-FUNC-COUNT item should be set to YES in
CONFIG menu.

26 SBI521 Service Manual

3.5.1 Enter Count Mode

1. To enter counting mode press the [FUNC] key for more than 3 seconds.
WEIGH will be displayed.

2. Use the [N/G] or [PRINT] key to select COUNT.

3. Press [TARE] to confirm the parts counting mode. The pcs annunciator will be
illuminated.

3a. In counting mode, the function of [ZERO], [TARE], [PRINT], [HOLD], [TARE],

[N/G], [SETUP], [ON/OFF] keys are available.

3.5.2 Obtain Piece Weight

There are two ways to obtain the piece weight:

Input piece weight directly

1. Press the [UNIT] key.

2. When InP.PWt is displayed, press the [TARE] key to enter into the piece
weight mode.

3. When UNIT.KG is shown, use the [PRINT] or [N/G] key to select the unit of
piece weight.

4. Use the [TARE] key to confirm and go to piece weigh entry.

5. Press the [ZERO] key to exit the piece weight mode and back to counting
mode.

6. When last stored piece weight is shown, use [PRINT], [N/G], [UNIT] key to
input new piece weight.

7. Press the [SETUP] key more than 3 seconds to input decimal point.

8. Press the [TARE] key to confirm the entry and save it.

8a. If the input piece weight is less than 0.5d, the indicator will display PWt.Er

and go back to counting mode.

Sample a Known Quantity

1. Press the [UNIT] key.

2. When InP.PWt is shown, use the [PRINT] or [N/G] key to select SPL.PWT.

3. Press the [TARE] key to weigh samples (which quantity is known) weight,
calculate piece weight.

4. When SPL.Lo is shown, remove the sample on scale and press the [TARE]
key to confirm.

5. When SPL.Hi is shown, put samples (its quantity is known) onto the scale,
Press the [TARE] key to confirm reading weight.

6. After INP.PCS is displayed, 000000 will be shown. Use the [PRINT], [N/G],
[UNIT] key to input the quantity of samples.

7. Press the [TARE] key to confirm.

SBI521 Service Manual 27

7a. If the calculated piece weight is less than 0.5d, the indicator will display

PWt.Er and go back to counting mode. Otherwise, after the reasonable piece
weight has been captured, the scale will go back to counting mode. The piece
weight will be saved and used again.

3.5.3 Check Counts (counts compare) in Counting mode:

To make counts compare function be available, CONFIG-FUNC-COMPAR item should
set to YES, and high and low limitation of pieces should be set correctly according to
following steps:

1. In counting mode, press down the [DATA] key more than 3 seconds to enter the
high and low compare data.

2. When in HIGH mode, 000000 will be displayed. Use the [PRINT], [N/G],
[UNIT] key to input high quantity number.

3. Press the [TARE] key to confirm the entry. The Hi annunciator will be shown
on the display.

4. When in LOW mode, 000000 will be displayed. Use the [PRINT], [N/G],
[UNIT] key to input the low quantity number.

5. Press the [TARE] key to confirm the entry. The Lo annunciator will be shown
on the display.

NOTE: If the High number value is 0 or is equal or less than low number, the
comparison will be disabled.

5a. After a reasonable limitation is set and compare is active, one of annunciators

HI, OK, LO will be lit and the beeper will sound according to its setting in
USER-BEEP.

3.6 Percent Weigh Mode

In this mode the scale will calculate the weight on the scale and display its percentage
after the unit-percentage-weight is obtained. NOTE: If 100% display format is set to
100%, 100.0% or 100.00% in CONFIG-FUNC-PERCEN menu item, then, the unit­percentage-weight is the weight of 1%, 0.1% or 0.01%.

To make percent weighing function be available, CONFIG-FUNC-PERCEN menu item
shouldn't be set to NONE.

3.6.1 Enter Percent Weighing Mode

1. From the percent weighing mode, normal weighing or counting mode, press the
[FUNC] key for more than 3 seconds. WEIGH/COUNT will be shown.

2. Use the [PRINT] or [N/G] key to select PERCEN.

3. Press the [TARE] key to confirm and go to percent weighing mode. The last
unit-percentage-weight will be used.

28 SBI521 Service Manual

3a. In percent weigh mode, the function of [ZERO], [TARE], [PRINT], [HOLD],

[TARE], [N/G], [SETUP], [ON/OFF] keys are available.

3.6.2 Obtain Percentage Weight

There are two ways to obtain the unit percent weight.

Input Weight and Percentage

The scale calculates the unit-percentage weight and weigh samples weight which
percentage is known. Input weight and its percentage from keypad, and calculate unit­percentage-weight: in percent weighing mode.

1. Press the [UNIT] key.

2. When InP.Pct is shown, press the [TARE] key to enter this mode.

3. Before entering the weight, use the [PRINT] or [N/G] key to select the
percentage from 1%, 2%, 5%, 10%, 20%, 50% and 100%. This percentage is
corresponding to the weight you will input in following steps

4. When UNIT.KG is shown, use the [PRINT] or [N/G] key to select the unit of
input weight.

5. Use the [TARE] key to confirm and go to next.

6. When last stored unit-percentage-weight data is shown, use the [PRINT],
[N/G], [UNIT] keys to input new unit-percentage-weight.

7. Press the [HOLD] key more than 3 seconds to input decimal point.

8. Press the [TARE] key to confirm and save it.

9. Go back to percent weighing mode. If the calculated unit-percentage-weight is
less than 0.5d, the indicator will display Pct.Er and go back to percent
weighing mode.

Obtain Unit Percentage Weight

By weighing samples weight which percentage is known.

1. In percent weighing mode, press the [UNIT] key,

2. When InP.Pct is shown, use the [PRINT] or [N/G] key to select SPL.Pct.

3. Press the [TARE] key to weigh samples (which percentage is known) weight
and calculate piece weight.

4. When SPL.Lo is shown, remove the sample on the scale and press the
[TARE] key to confirm.

4a. Before the scale is stable, SPL.Lo will be flashed. After stability is reached, it

will go to next step.

5. When SPL.Hi is shown, place samples (its percentage is known) onto the
scale.

6. Press the [TARE] key to confirm reading weight.

6a. Before scale is stable, SPL.Hi will be flashed. After it is stability is reached, it

will go to next step.

SBI521 Service Manual 29

7. After INP.PCT is shown, 000000 (position of decimal point is determined by
CONFIG-FUNC-PERCEN setting) will be displayed

8. Use the [PRINT], [N/G], [UNIT] keys to input the percentage of samples.

9. Press the [TARE] key to confirm.

9a. If the calculated unit-percentage-weight is less than 0.5d, the indicator will

display Pct.Er and go back to percent weighing mode. Otherwise, the scale
will go back to percent weighing mode. The unit percentage weight can be
saved after the power off and can be used next time.

3.6.3 Check Percent (percentage compare) in Percent Weighing Mode

To make percentage compare function be available, CONFIG-FUNC-COMPAR menu
item should set to YES, and high and low limitation of percentage should be set
correctly according to following steps:

1. In percent weighing mode, Press the [DATA] key for more than 3 seconds to
enter compare data of high and low.

2. After HIGH is shown, 000000 will be displayed. Use the [PRINT], [N/G],
[UNIT] keys to input high percentage number.

3. Press the [TARE] key to confirm. The HI annunciator will be illuminated.

4. After Low is shown, 000000 will be displayed. use the [PRINT], [N/G],
[UNIT] keys to input the low percentage number.

5. Press the [TARE] key to confirm. The LO annunciator will be illuminated.

NOTE: If the High number value is 0 or is equal or less than low number, the
comparison will be disabled.

5a. After a reasonable limitation is set and compare is active, one of annunciators

HI, OK, LO will be lit and the beeper will sound according to its setting in
USER-BEEP.

3.7 Hold Function

HOLD function can be used to freeze a displayed number. In this mode, the scale can
capture a dynamic number, hold a stable number, or average a unstable number and
then HOLD (freeze) this number temporarily for the user to view or record.

The HOLD function can be used in normal weighing mode, counting mode and percent
weighing mode. After entering HOLD mode, the speed of A/D converter can be
increased to 80Hz (if USER-HOLD-AD.H.SPD is set to YES) from original 10Hz for
some dynamic weighing applications.

It is possible to weigh restless weighing samples such as live animals or moving objects
within the hold function. The indicator provides special mode settings to accommodate
weight movements.

30 SBI521 Service Manual

3.7.1 Activate the Hold Function

The CONFIG-FUNC-HOLD menu item must be set to YES.

Menu items of USER-HOLD-HLD.MOD /-AVG.TIM /-HLD.TIM /-DYN.RNG /-STB.TIM,
USER-OTHER-NLD.RNG need be set to reasonable value.

To speedup sampling of weight, set USER-HOLD-AD.H.SPD menu item to YES.

3.7.2 Access the Hold Mode

To enter the HOLD mode, press the [HOLD] key while in the normal weighing mode,
counting mode or percent weighing mode.

3.7.3 Hold Methods

l Positive Peak Number HOLD mode

l Negative Peak Number HOLD mode

l Toggle HOLD mode

l Average HOLD mode

l Auto HOLD mode

The following are details of these HOLD modes:

Positive Peak HOLD

When USER-HOLD-HLD.MOD is set to PS.PEAK, the hold mode is positive peak hold
mode.

When scale first enters this working mode, it will display the largest positive number
that is from the time of zero-point set. After entering this working mode, scale will
always catches and refresh positive larger number and display it.

To exit HOLD mode, press the [HOLD] key again.

Negative Peak HOLD

When USER-HOLD-HLD.MOD is set to NG.PEAK, the hold mode is negative peak hold
mode.

When scale first enters this working mode, it will display the largest negative number
from the time of zero-point set. After entering this working mode, scale will always
catches negative larger number and display it.

To exit HOLD mode, press the [HOLD] key again.

Toggle HOLD

When USER-HOLD-HLD.MOD is set to TOGGLE, the hold mode is toggled between
HOLD and MANUAL HOLD function.

After entering this working mode, the scale will freeze and display number if scale is
stable. Only the weight that is over USER-OTHER-NLD.RNG (zero 'dead' band) can
be held.

SBI521 Service Manual 31

To exit HOLD mode, press the [HOLD] key again. If the time of scale being unstable is
more than USER-HOLD-STB, TIM, STB.ER will be shown. Press the [TARE] key to
start averaging again or press the [HOLD] key to exit.

Average HOLD

Set the USER-HOLD-HLD.MOD parameter to AVERAG.

After entering this working mode the scale will freeze and display number if scale is
stable. If scale is not stable, but the variation is less than USER-HOLD-DYN.RNG
setting, the scale will average data in USER-HOLD-AVG.TIM, then freeze and display
the number. Only the weight that is over USER-OTHER-NLD.RNG can be frozen.

The scale will exit HOLD mode according to the setting of USER-HOLD-HLD.TIM. If
the time of scale variation being over USER-OTHER-NLD.RNG is more than USER­HOLD-STB.TIM, STB.ER will be shown.

Press [PRINT], [N/G], [UNIT] or [TARE] to start averaging again, or press the [HOLD]
key to exit.

Auto HOLD

Set the USER-HOLD-HLD.MOD parameter to AUTO. Different items can be weighed
one after another without pressing any buttons.

After entering this working mode, scale will freeze and display number if scale is stable.
If scale is not stable, but the variation is less than USER-HOLD-DYN.RNG the scale
will average data in USER-HOLD-AVG.TIM, then freeze and display the number. Only
the weight that is over USER-OTHER-NLD.RNG can be frozen. If the held weight is
moved away and a new load is put on the scale, the new load will automatically be held.

The scale will exit HOLD mode according to the setting of USER-HOLD-HLD.TIM. If
the time of scale variation being over USER-OTHER-NLD.RNG is more than USER­HOLD-STB.TIM, STB.ER will be shown. Press the [TARE] key to start averaging again
or press the [HOLD] key to exit.

3.7.4 Hold Annunciators

In Positive or Negative Peak HOLD mode, the red HOLD (for LED version) or PEAK
and HOLD (for LCD version) annunciator will be illuminated.

In other HOLD modes the green HOLD (for LED version) or HOLD (for LCD version)
annunciator will be illuminated.

When the HOLD annunciator is flashing, the displayed number is live. When HOLD
annunciator is steady, the displayed number is frozen.

3.8 Data Compare Function

Data compare function can be used in normal weighing mode, counting mode and
percent weighing mode. It can be called Check Weigher, Check Counts and Check
Percentage. When this function is enabled, you can set a higher and a lower limitation
of weight, counts or percentage independently. These limitations can be saved
permanently. Then, the current data of weight, counts or percentage will be compared
with the setting limitation and corresponding annunciator will be illuminated.

32 SBI521 Service Manual

3.8.1 Enable Data Compare Function

To make data compare function be available, CONFIG-FUNC-COMPAR menu item
should set to YES, and high and low limitation should be set correctly according to
following steps:

3.8.2 View Data Compare Function

1. From the weighing, counting or percent weighing mode, press the [DATA] key
more than 3 seconds to enter input compare data of high and low mode.

2. After HIGH is shown, the last saved high value will be displayed. Use the
[PRINT], [N/G], [UNIT] keys to enter a new high value.

3. Press the [TARE] key to confirm. The HI annunciator will be illuminated.

4. After Low is shown, the last saved low value will be displayed. Use the
[PRINT], [N/G], [UNIT] keys to enter a new low value.

5. Press the [TARE] key to confirm. The LO annunciator will be illuminated.

6. Press the [ZERO] key to exit and back to original working mode.

NOTE: If the High number value is 0 or is equal or less than low number, the
comparison will be disabled.

After a reasonable limitation is set and compare function is active, one of annunciators
HI, OK, LO will be illuminated and the beeper will sound according to its setting in
USER-BEEP.

For details refer to User Menu on page 44.

3.9 Accumulation

The accumulation function can be used in weighing, counting and percent weighing
mode. When this function is enabled, you can accumulate the current net weight, piece

weigh and percentage.

NOTE: When the HOLD function is enabled and the scale is working in PEAK HOLD
mode, the accumulation function will be automatically disabled.

NOTE: The positive displayed number can only be totalled when the load on the scale
is larger than the USER-OTHER-NLD.RNG value. The number of accumulations and
total can be displayed or printed.

SBI521 Service Manual 33

3.9.1 Enable Accumulation

To make the accumulation function be available the CONFIG-FUNC-ACCUMU
parameter should be set to MANUAL or AUTO.

Manual Accumulation

When CONFIG-FUNC-ACCUMU is set to MANUAL, the stable and positive displayed
net weight must be larger than the USER-OTHER-NLD.RNG setting.

Piece or percentage can be accumulated by a long press of the [TOTAL] key. The
indicator will display accumulation times first and then display total of number.

NOTE: Be sure to remove the accumulated load to avoid duplicating an accumulation.
The weight on the scale must be smaller than the setting at USER-OTHER-NLD.RNG
to continue.

Auto Accumulation

When CONFIG-FUNC-ACCUMU is set to AUTO, the stable and positive displayed net
weight must be larger than the USER-OTHER-NLD.RNG setting.

Piece or percentage can be accumulated automatically. The indicator will display
accumulation times first and then display total number of accumulations.

NOTE: Be sure to remove the accumulated load to avoid duplicating an accumulation.
The weight on the scale must be smaller than the setting at USER-OTHER-NLD.RNG
to continue.

View Total

When the displayed number is zero, press the [TOTAL] key for 3 seconds. The
indicator will display accumulation times first and then display total of number.

NOTE:

l ZERO only be active when scale is stable and weight is in SAZSM setting

range.

l TARE only be active when the scale is stable.
l When the TARE weight or ZERO weight is cleared, the indicator will display

the GROSS mode.

l NET weight is displayed when a TARE weight is entered.

3.10 Display and Set Time

1. Enter the Setup Mode by pressing the [SETUP] key more than 3 seconds.

2. Use the [PRINT] or [N/G] key to select the MISC menu.

3. Press [TARE] to select the MISC menu.

4. Press the [PRINT] key to scroll to the TIME parameter.

5. Press [TARE] to display current time.

34 SBI521 Service Manual

5a. Time display Format is: txx.xx.xx(hh-mm-ss) for LED Version, 24h format

xx:xx:xx(hh-mm-ss) for LCD Version, 24h format.

6. Press the [DATA] key for 3 seconds. The first digit of the time will flash.

7. Use the [PRINT] or [N/G] key to enter the first digit.

7a. If time of no operation is more than 5s, it will automatically exit modification

mode.

8. Use the [DATA] key to move to the next digit.

9. Press the [SETUP] key to exit the time entry mode.

3.11 Display and Set Date

1. Enter the Setup Mode by pressing the [SETUP] key more than 3 seconds.

2. Use the [PRINT] or [N/G] key to select the MISC menu.

3. Press [TARE] to select the MISC menu.

4. Press the [PRINT] key to scroll to the DATE parameter.

5. Press [TARE] to display current date.

5a. Date display Format is: dxx.xx.xx(yy-mm-dd) for LED Version, xx.xx.xx(yy-

mm-dd) for LCD Version.

6. Press the [DATA] key for 3 seconds. The first digit of the time will flash.

7. Use the [PRINT] or [N/G] key to enter the first digit.

7a. If time of no operation is more than 5s, it will automatically exit modification

mode.

8. Use the [DATA] key to move to the next digit.

9. Press the [SETUP] key to exit the date entry mode.

3.12 Display Firmware Version

1. Enter the Setup Mode by pressing the [SETUP] key more than 3 seconds.

2. Use the [PRINT] or [N/G] key to select the MISC menu.

3. Press [TARE] to select the MISC menu.

4. Press the [PRINT] key to scroll to the VER parameter.

5. Press [TARE] to display current version.

5a. Firmware Version display Format is: Vxx.yy, xx is hardware version, yy is

software version.

6. Press the [SETUP] key to return to last menu item.

7. Press the [ON/OFF] key to prepare to exit this mode.

SBI521 Service Manual 35

3.13 Display Interface Type of COM2

This function is used only to check whether the hardware and software about COM2
are matched.

1. Enter the Setup Mode by pressing the [SETUP] key more than 3 seconds.

2. Use the [PRINT] or [N/G] key to select the MISC menu.

3. Press [TARE] to select the MISC menu.

4. Press the [PRINT] key to scroll to the COM2 parameter.

5. Press [TARE] to display interface type of COM2.

6. Press the [N/G] key for more than 3 seconds to display corresponding number
of COM2 hardware type setting.

7. Press the [SETUP] key to return to last menu item.

8. Press the [ON/OFF] key to prepare to exit this mode.

3.14 Display Test

1. Press the [UNIT] key more than 3 seconds to enter the SETUP mode.

2. Use the [PRINT] or [N/G] key to select TEST menu.

3. Press [TARE] to select the TEST menu.

4. Press the [PRINT] key to scroll to the DISP parameter.

5. Press [TARE] to enter the test display mode and all segments will light at first.

5a. In this mode, every press of the [N/G] key will light the next segment. Every

press of the [UNIT] key will light the next digit.

5b. Press the [TARE] key to automatically light all segments and all digits.

6. Press the [SETUP] key to return to last menu item.

7. Press the [ON/OFF] key to prepare to exit this mode.

3.15 Keyboard and Buzzer Test

1. Enter the Setup Mode by pressing the [SETUP] key more than 3 seconds.

2. Use the [PRINT] or [N/G] key to select TEST menu.

3. Press [TARE] to select the TEST menu.

4. Press the [PRINT] key to scroll to the KEY parameter.

5. Press [TARE] to enter test keypad mode and key. -- will be displayed.

6. Press any key. The value of this key will be displayed and the buzzer will beep.

7. Press the [SETUP] key to return to last menu item.

8. Press the [ON/OFF] key to prepare to exit this mode.

36 SBI521 Service Manual

3.16 Serial Port1/2 (COM1/2) Receiving Test

Before testing the receiving function of COM1 or COM2, a cable is need to connect a
computer to the indicator. A terminal program such as Hyper Terminal is also needed
for testing.

Note: baud rate is selected by USER-COM1/2-BAUDRT, 8N1 byte format is fixed, Hex
data (0x00 - 0xff) are used.

1. Enter the Setup Mode by pressing the [SETUP] key more than 3 seconds.

2. Use the [PRINT] or [N/G] key to select TEST-COM1.RD or TEST-COM2.RD
item.

3. Press [TARE] to enter test COM1/2 receiving function and rd1.-- or rd2.-- will
be displayed first.

3a. In this mode, received hex data (0x00 - 0xff) will be displayed on -- position.

4. Press the [SETUP] key to return to last menu item.

5. Press the [ON/OFF] key to prepare to exit this mode.

3.17 Serial Port1/2(COM1/2) Transmitting Test

Before testing the transmitting function of COM1 or COM2, a cable is need to connect
a computer to the indicator. A terminal program such as Hyper Terminal is also needed
for testing.

Note: baud rate is selected by USER-COM1/2-BAUDRT, 8N1 byte format is fixed, Hex
data (0x00 - 0xff) are used.

1. Enter the Setup Mode by pressing the [SETUP] key more than 3 seconds.

2. Use the [PRINT] or [N/G] key to select TEST-COM1.TD or TEST-COM2.TD
item.

3. Press [TARE] to enter test COM1/2 receiving function and td1.-- or td2.-- will
be displayed first.

3a. In this mode, transmitted hex data (0x00 - 0xff) will be displayed on -- position,

and [HOLD], [PRINT], [N/G], [UNIT] and [TARE] keys can be used to modify
transmitted data.

4. Press the [SETUP] key to return to last menu item.

5. Press the [ON/OFF] key to prepare to exit this mode.

SBI521 Service Manual 37

4 Setup Mode

CONFIG USER CAL MISC TEST

The setup menu consists of five different sub-menus. Within each sub-menu are
different menu options.

The config/cal switch must be set in the ON position in order to make changes to
specific parameters.

4.1 Entering the Setup Menu

1. Power on the indicator by pressing and holding the [ON/OFF] key.

2. Press the [HOLD/SETUP] key for 3 seconds. The indicator shows "Config" to
indicate that you are in Setup Menu mode.

4.2 Navigating the Setup Menu

1. Once in the “Config” menu, use the [NG/TOTAL] (up arrow) or [PRINT/FUNC]
(down arrow) key to move to the next available menu in the Setup Menu.

2. Use the [TARE/PRESET] key to access the desired menu.

3. Use the [NG/TOTAL] (up arrow) or [PRINT/FUNC] (down arrow) key to
choose a sub-menu (parameter).

4. Use the [TARE/PRESET] key to select the options within the sub-menu.

5. Use the [NG/TOTAL] (up arrow) or [PRINT/FUNC] (down arrow) key to make
a change. Press the up or down arrow until the desired choice is on the
display.

6. Press the [TARE/PRESET] key to select the

38 SBI521 Service Manual

Table 4.1 Key Navigation

[HOLD/SETUP] Access the Setup Menu.

[PRINT/FUNC] Scroll through available menus.

Choose a sub-menu

Make a change within the sub-menu

[NG/TOTAL] Scroll through available menus.

Choose a sub-menu

Make a change within the sub-menu

[UNIT/DATA] Choose a sub-menu

[TARE/PRESET] Make a change within the sub-menu

[ZERO/ON/OFF] Exit the setup mode

SBI521 Service Manual 39

4.3 Setup Menu Parameters

CFG.ON

CFG.OFF

kg lb

PRIM.Ut

100 – 150,000

SECND.N

RESET

No Yes

none USA Canada Europe

REGULA

100 – 100,000

PRIM.N PRIM.D

0.0001 0.0002 0.0005 0.001 0.002 0. 005

0.01 0.02 0.05 0.1 0.2 0.5

1 2 5 10 20 50

ZRO.PNT FILTER

FUNC

HOLD COUNT PERCNT COMPAR ACCUMU WT.ADJ

Yes No Yes No Yes No

NO MANUAL AUTO

FLT1.TH FLT1.ST FLT2.TH FLT2.ST

0 - 255 0 -2550 - 255

IZSM IN.IZSM OV.IZSM SAZ SM AZSM

0 - 100 0 - 100

0 - 100

DSP.OVR CAL.ZRO LST.Z.TWEIGHT

WEIGHT CAL.ZRO LST.Z.T

NO 100.0% 100.00%100%

0 - 100

10N.DSP UNITS MOTION OVER.LD

No Yes

0 - 6

1 - 255

AD.FROM AD.H.SPD

Yes No

Yes NoADC COM2

1 - 64

This section provides more detailed descriptions of the selections found in the Setup
Menu.

The menu charts show the flow of the parameters and also provide a quick reference
to the parameters withing the menu.

The menu tables show the submenus, options and default parameter in LED/LCD
display format to coinside with the actual display.

4.3.1 Config Menu

The figure above is an illustration of the available menus with the Config menu and the
choices within those menus. Refer to Table 4.2 for explanations of the menu choices.

40 SBI521 Service Manual

Figure 4.1 CONFIG Menu Chart

Table 4.2 CONFIG Menu Choices and Explanations

CONFIG

SubMenu1 SubMenu2 Option Default Parameter Description Comment

CFG.ON

CFG.OFF

Seal switch position The display will show whether the

seal switch is in the ON or Off
position. This parameter can’t be
changed within the software.

RESET NO NO Reset Config menu

YES

REGULA none USA Select the standard in

USA

Canada

parameters to default
setting

*None = not legal for trade.

which the scale will
comply: USA, Canada,
Europe

Europe

PRIM.N 100 -

100,000

PRIM.D 0.0001 1 The division value under

0.0002

0.0005

3000 Primary full scale value *If (REGULA) ≠ none, the max is

10,000

The division value under second

primary unit

unit is automatically determined by
the indicator according to the
division value under primary unit.

0. 0 0 1

0. 0 0 2

0. 0 0 5

0. 0 1

0. 0 2

0. 0 5

0. 1

0. 2

0. 5
1
2
5

10
20
50

PRIM.Ut kg kg Primary unit Select the primary unit from kg or lb.

lb

The second unit is lb if kg is
selected as the primary unit.
*The calibration standard weight

must be in primary unit!

SECND.N 100-

125,000

3000 Second scale full scale

value

The division number under second
unit. The maximum is

1.25*(PRIM.N).

*If (REGULA)≠none, the max is
10,000

SBI521 Service Manual 41

CONFIG

SubMenu1 SubMenu2 Option Default Parameter Description Comment

10N.DSP NO NO Display weight at 10

YES

times division number

*If (REGULA)= none this
parameter will not be available. T

under primary unit

UNITS 0-6 3 Units key 0=kg

1=lb
2=lb:oz
3= kg,lb
4=kg,lb:oz
5=lb,lb:oz
6=kg,lb,lb:oz

MOTION 1-255 4 Motion window 1-255 = ±0.25d *(1-255)

*If (REGULA)=none, the max is 12

OVER.LD 0-100 0 Overload display

limitation

0=FS+9d
1-100=101%FS -200%FS.

*If (REGULA)=none, the max is 10

AD.FROM ADC ADC Data of A/D comes from ADC=local A/D chip on PCB.

COM2

COM2=COM2 interface.

NOTE: In legal trade application,
COM2 may be not allowed, Please
contact your local legal
metrology organization!

AD.H.SPD NO NO Speed of the A/D

YES

converter

no = 10Hz
yes = 80Hz

*If AD.FROM = COM2, this
parameter will not be displayed.

ZRO.PNT IZSM 0-100 10 Initial zero (power on

zero) point range

0=no limitation
1-100= (calibration zero point)
±1%FS - (calibration zero point)
±100%FS

*If (REGULA)=none, the max is 10

IN.IZSM WEIGHT WEIGHT Choose which weight as

CAL.ZRO CAL.ZRO= calibration zero
LAST.Z.T LAST.Z.T=switch-off zero and tare

current initial zero point
when current weight is in
IZSM range

WEIGHT= current weight

*If (REGULA) ≠none, the value is
fixed on WEIGHT

OV.IZSM DSP.OVR DSP.OVR Choose which weight as

WEIGHT WEIGHT= current weight

CAL.ZRO CAL.ZRO= calibration zero

current initial zero point
when current weight is
over IZSM range

DSP.OVR=display initial zero is over

LAST.Z.T LAST.Z.T=switch-off zero and tare If

(REGULAR) ≠none, the value is
fixed on DSP.OVR

SAZSM 0-100 2 Zero key range 0=no limitation

1-100= (initial zero point) ±1%FS ­(initial zero point) ±100%FS

*If (REGULA) ≠none, the max is 2

AZSM 0-100 8 Zero tracking window 0=0d, no tracking

1-100=±(0.2+0.05*(1-100))d /s

*If (REGULA) ≠none, the max is 4

42 SBI521 Service Manual

CONFIG

SubMenu1 SubMenu2 Option Default Parameter Description Comment

FILTER FLT1.TH 0-255 40 Digital filter1 threshold: 0=no filter1

1-254=filter1 used only when
vibration in ±0.5d*(1-254)
255= filter1 be always used

FLT1.ST 1-64 8 Digital filter1 intensity 1-64 ADC’s data will be averaged
FLT2.TH 0-255 8 Digital filter2 threshold 0=no filter2

1-254=filter2 used only when
vibration in ±0.25d*(1-254)
255= filter2 be always used

FLT2.ST 0-255 240 Digital filter2 intensity 0-255=weak to strong

FUNC HOLD YES YES Enable or disable hold

NO

function

COUNT YES NO Enable or disable

NO

counting function

PERCNT NO NO Enable or disable percent

100%

weighing function

100.0%

100.00%

YES
NO

YES
NO

(1)NO=disable
(2)100%=enable and display format
is 100%
(3)100.0%=enable and display
format is 100.0%
(4)100.00%=enable and display
format is 100.00%

COMPAR YES YES Enable or disable data

NO

comparison function

ACCUMU NO NO Accumulation Mode

MANUAL

selection

AUTO

YES
NO

(1)NO=no accumulation function
(2)MANUAL=add up current number
to accumulation memory after
[TOTAL] key is pressed
(3)AUTO=automatically add up
current number to accumulation
memory after scale is stable and
weight is over (NLD.RNG)

WT.ADJ YES NO Enable or disable weight

fine-tuning using keypad
in weighing mode

YES
NO

*If (REGULA) ≠none, this item is
NO

*The setting will be limited by the choice of REGULA

SBI521 Service Manual 43

4.3.2 User Menu

COM2 BEEPOUT2

KEY COMPAR

No Yes

NONE L.LOW IN.LMT O.HIGH OUT.LMT

COM1 OUT1RESET

No Yes

BAUD.RT BYT.FMT OUT.MOD LAYOUT

1200 2400 4800 9600 19200 38400 57600

8N1 701 7E1

CONT PRINT CMD PRT.CMD STABLE

B.LINE

NONE LINE1 LINE2 LINE3 LINE4

HOLD

OTHER

HLD.MOD AVG.TIM STB.TIM HLD.TIM HLD.RNG

NONE PS.PEAK NG.PEAK TOGGLE AVERAG AUTO

1 - 60

3*AVG.TIM-255

0+65535

0-255

NLD.RNG CMD.SRC A.FF.T A.OFF.MD LCD.B LT SCAL.ID

1 - 255

NONE COM.1 COM.2 COM1-2

0 - 255

LED.BRT

0 - 255

BRT1-2-3

000000-999999

OFF DSP.TIM DSP.DAT AC.TIME AC.DATE

MULTPL SINGLE 200S 200F

1200 2400 4800 9600 19200 38400 57600

8N1 701 7E1

00-99

No Yes

CONT PRINT CMD PRT.CMD STABLE

BAUD.RT BYT.FMT OUT.MOD LAYOUT LC.ADDR EN.ADDR

MULTPL SINGLE 200S 200F

NONE LINE1 LINE2 LINE3 LINE4

B.LINE

SCAL.ID GROSS TARE NET PERCNT UPCTWT COUNT

PCWT ACCUM DATE TIME AD.CODE BAT.VOL STATUS

SCAL.ID GROSS TARE NET PERCNT UPCTWT COUN T

PCWT ACCUM DATE TIME AD.CODE BAT.VOL STATUS

The figure above is an illustration of the available menus with the USER menu and the
choices within those menus. Refer to Table 4.3 for explanations of the menu choices.

Figure 4.2 USER Menu Chart

44 SBI521 Service Manual

Table 4.3 User Menu Choices and Explanations

USER

SubMenu1 SubMenu2 Option Default Parameter Description Comment

RESET NO NO Reset User menu parameters to

YES

default setting

COM1 BAUD.RT 1200 9600 Select COM1 baud rate

2400
4800

9600
19200
38400
57600

BYT.FMT 8N1 8N1 Select COM1 byte format (1)8N1=8 data bits, No parity

check bit, 1 stop bit

7O1 (2)7O1=7 data bits, 1 Odd parity

check bit, 1 stop bit

7E1 (3)7E1=7 data bits, 1 Even parity

check bit, 1 stop bit

OUT.MOD CONT PRT.CMD Select COM1 output mode (1)CONT=continuously output

PRINT (2)PRINT=output after [PRINT]

key is pressed

CMD (3)CMD=output after a request

command is received

PRT.CMD (4)PRT.CMD= output after

[PRINT] key is pressed or
request command received

STABLE (5)STABLE=output after scale is

stable; Note: use PRINT or CMD
to output data, the scale must be
stable

LAYOUT MULTPL MULTPL Set COM1 content and format (1)MULTPL= the following

selected item in OUT1 will be
output use defined format

SINGLE (2)SINGLE= only displayed

content and current status will be
output, it's compatible with NCI­SCP01

200S (3)200S, 200F= only displayed

200F

content and current status will be
output

SBI521 Service Manual 45

USER

SubMenu1 SubMenu2 Option Default Parameter Description Comment

OUT1 SCAL.ID YES NO Enable or disable scale ID

NO

number

GROSS YES NO Enable or disable gross weight Prompt is "GROSS"

NO

TARE YES NO Enable or disable tare weight Prompt is "TARE"

NO

NET YES YES Enable or disable net weight Prompt is "NET"

NO

PERCNT YES NO Enable or disable weight

NO

percentage

UPCTW YES NO Enable or disable weight of 1%

NO

percentage

COUNT YES NO Enable or disable counts Prompt is "QUANTITY"

NO

PWT YES NO Enable or disable piece weight Prompt is "PIECE WT"

NO

Accumu YES NO Enable or disable accumulation

NO

times and total.

DATE YES NO Enable or disable date Prompt is "DATE"

NO

TIME YES NO Enable or disable time Prompt is "TIME"

NO

AD.CODE YES NO Enable or disable ADC code Prompt is "A/D CODE"

NO

BAT.VOL YES NO Enable or disable whether to

NO

display the battery voltage

STATUS YES NO Enable or disable scale status Prompt is "STATUS"

NO

B.LINE NONE LINE1 How many blank lines after

LINE1 LINE1/2/3/4=there are 1, 2,3 or 4

strings output

LINE2
LINE3
LINE4

Prompt is "SCALE ID"

Prompt is "PERCENTAGE"

Prompt is "1% REF WT"

Prompt is "ACC. N" and "TOTAL"

Prompt is "VOLTAGE"

NONE=no blank line

blank lines after strings, used for
paper feed forward 1/2/3/4 lines.

46 SBI521 Service Manual

USER

SubMenu1 SubMenu2 Option Default Parameter Description Comment

COM2 BAUD.RT 1200 9600 Select COM2 baud rate

2400

4800

9600
19200
28800
57600

BYT.FMT 8N1 8N1 Select COM2 byte format (1)8N1=8 data bits, No parity

check bit, 1 stop bit

7O1 (2)7O1=7 data bits, 1 Odd parity

check bit, 1 stop bit

7E1 (3)7E1=7 data bits, 1 Even parity

check bit, 1 stop bit

OUT.MOD CONT PRT.CMD Select COM2 output mode (1)CONT=continuously output

PRINT (2)PRINT=output after PRINT

key pressed

CMD (3)CMD=output after a request

command is received

PRT.CMD (4)PRT.CMD= output after PRINT

key pressed or request command
received

STABLE (5)STABLE=output after scale is

stable; Note: use PRINT or CMD
to output data, the scale must be
stable

LAYOUT MULTPL MULTPL Set COM2 content and format (1)MULTPL= the following

selected item in OUT2 will be
output use defined format

SINGLE (2)SINGLE= only displayed

content and current status will be
output, it's compatible with NCI­SCP01

200S (3)200S, 200F= only displayed

200F

content and current status will be
output

LC.ADDR 00-99 01 Local address for COM2
EN.ADDR NO NO Enable or disable COM2 local

YES

address in output or input
strings

SBI521 Service Manual 47

USER

SubMenu1 SubMenu2 Option Default Parameter Description Comment

OUT2 SCAL.ID YES NO Enable or disable scale ID

NO

number

GROSS YES NO Enable or disable gross weight Prompt is "GROSS"

NO

TARE YES NO Enable or disable tare weight Prompt is "TARE"

NO

NET YES YES Enable or disable net weight Prompt is "NET"

NO

PERCNT YES NO Enable or disable weight

NO

percentage

UPCTW YES NO Enable or disable weight of 1%

NO

percentage

COUNT YES NO Enable or disable counts Prompt is "QUANTITY"

NO

PWT YES NO

NO

x

Enable or disable piece weight Prompt is "PIECE WT"

accumU YES NO Enable or disable accumulation

NO

times and total.

DATE YES NO Enable or disable date Prompt is "DATE"

NO

TIME YES NO Enable or disable time Prompt is "TIME"

NO

AD.CODE YES NO Enable or disable ADC code Prompt is "A/D CODE"

NO

BAT.VOL YES NO Enable or disable whether to

NO

display the battery voltage

STATUS YES NO Enable or disable scale status Prompt is "STATUS"

NO

B.LINE NONE LINE1 How many blank lines after

LINE1 LINE1/2/3/4=there are 1, 2,3 or 4

strings output

LINE2
LINE3
LINE4

Prompt is "SCALE ID"

Prompt is "PERCENTAGE"

Prompt is "1% REF WT"

Prompt is "ACC. N" and "TOTAL"

Prompt is "VOLTAGE"

NONE=no blank line

blank lines after strings, used for
paper feed forward 1/2/3/4 lines.

48 SBI521 Service Manual

USER

SubMenu1 SubMenu2 Option Default Parameter Description Comment

BEEP KEY YES YES Enable or disable beep after a

NO

key is pressed.

COMPAR NONE IN.LMT (1)NONE = no beep

L.LOW (2)L.Low = beep when lower than

low limitation;

IN.LMT (3)IN.LMT = beep when in range

of low and high limitation

O.HIGH (4)O.HIGH = beep when over

high limitation

OUT.LMT (5)OUT.LMT = beep when lower

than low limitation or higher than
high limitation

SBI521 Service Manual 49

USER

SubMenu1 SubMenu2 Option Default Parameter Description Comment

HOLD HLD.MOD NONE AUTO Hold mode (1)NONE=no hold function

PS.PEAK (2)PS.PEAK=Positive Peak

number Hold mode. Scale will
display and refresh the positive
peak value from last zero setting.

NG.PEAK (3)NG.PEAK=Negative PEAK

number Hold mode. It is similar to
PS.PEAK, but a negative number
is used.

TOGGLE (4)TOGGLE=Press [HOLD] key

to enter HOLD mode. If the
weight is over (NLD.RNG) and
stable, the data will be frozen
until the [HOLD] key is pressed
again to exit.

AVERAG (5) AVERAG= Average HOLD

mode. In this mode, if the weight
is over (NLD.RNG), and its
variation is less than
(DYN.RNG), the average data in
(AVG.TIM) will be frozen. Press
the [HOLD] key or (HLD.TIM)
time elapsed to exit this mode

AUTO (6)AUTO=Auto hold mode. It is

similar to AVERAG mode, but if
the one held load is removed,
and a new load that is over
(NLD.RNG) put on scale, the new
load will be automatically frozen.

AVG.TIM 1-60 3 Average data time for HOLD

1-60 seconds

mode

STB.TIM 3*AVG.TI

M - 255

3*

AVG.TIM

Wait time for the scale to be
stable in HOLD mode

3*(AVG.TIM) - 255S

HLD.TIM 0-65535 0 Data HOLD time 0=data will be frozen until HOLD

key pressed.
1-65535=data frozen time is 1­65535s, after the time elapses,
scale will exit HOLD mode.

HLD.RNG 0 - 255 5 Vibration range of data that can

be averaged and held in HOLD
mode

0=any data can be averaged
1-255= only the data which
vibration is in 1-255d can be
averaged and held.

50 SBI521 Service Manual

USER

SubMenu1 SubMenu2 Option Default Parameter Description Comment

OTHER NLD.RNG 1-255 10 1-255=the range of weight is 1-

255d. When current weight is
less than this value, the scale
can be regarded as empty, or the
load on scale is removed.

It must be bigger than
(CONFI.MOTION).

CMD.SRC NONE COM.1 Source of the executed

command selection

(1)NONE=no any command will
be executed

COM.1 (2)COM.1= command from

COM1 will be executed

COM.2 (3)COM.2= command from

COM2 will be executed

COM1-2 (4)COM.1.2= command from

COM1 or COM2 will be executed

A.OFF.T 0-255 0 Auto off time 0=not auto power off

1-255=auto power off after 1-255
minutes. In this period, no
operation or no weight change

A.OFF.MD OFF OFF Auto off mode (1)OFF=turn off indicator

DSP.TIM (2)DSP.TIM= display time
DSP.DAT (3)DSP.DAT=display date
AC.TIME (4)AC.TIME=turn off when only

battery is used. Display time
when AC adaptor is used

AC.DATE (5)AC.DATE=turn off when only

battery is used. Display date
when AC adaptor is used

LCD.BLT 0-255 30 LCD backlight set (1)0=always off

(1)1=always on
(2)2=press down ZERO+UNIT
together more than 3s to turn on
or turn off
(3)3-255=auto on when key
operation or weight changing.
Auto off after 3-255s elapsed.

*Only available on LCD version

LED.BRT BRT1-2-

3-4-5

SCAL.ID 000000-

999999

BRT3 LED brightness level set BRT1-BRT2-BRT3=low - high

*Only available on LED version

123456 Scale ID number: 000000-

999999

NOTE: If AD.FROM = COM2, COM2 and OUT2 will be disabled.

SBI521 Service Manual 51

4.3.3 Cal Menu

CAL. ON

CAL. OFF

ZERO LINE INPUT

CAL. PO CAL. P1 END.Y CAL .P2 END. Y CAL. P3

Yes NoYes No

CAL. END

Figure 4.3 CAL Menu Chart

The figure above is an illustration of the available menus with the CAL menu and the
choices within those menus. Refer to Table 4.4 for explanations of the menu choices.

Table 4.4 CAL Menu Choices and Explanations

CAL

Submenu1 Submenu2 Option Parameter Description Comment

CAL.ON

CAL.OFF

Seal switch position The display will show whether the

seal switch is in the ON or Off
position. This parameter can’t be
changed within the software.

ZERO Zero point calibration Only do zero point calibration, then

go to CAL.END to end (only need
where a zero shift has occured).

LINE CAL.P0 Line calibration point0 Do zero point calibration. This point

can't be omitted.

CAL.P1 Line calibration point1 First weight point calibration. This

point can't be omitted and standard
weight must be over 10%FS.

END.Y YES End calibration? YES=go to CAL.END to end

NO

NO=go to do next point calibration

CAL.P2 Line calibration point2 Second weight point calibration.

Standard weight must be over
10%FS and be larger than it in
CAL.P1. This point can be omitted.

END.Y YES End calibration? YES=go to CAL.END to end

NO

NO=go to do next point calibration

CAL.P3 Line calibration point3: Third weight point calibration.

Standard weight must be over
10%FS and be larger than it in
CAL.P2, this point can be omitted.

CAL.END calibration end and restart

52 SBI521 Service Manual

4.3.4 Misc Menu

CODE VOL DATE TIME VER COM2.TY

DISP COM1.RD COM1.TD COM2.RD COM2.TD KEY

Figure 4.4 MISC Menu Chart

The figure above is an illustration of the available menus with the MISC menu. There
are no programming choices within this menu. Refer to Table 4.5 for explanations of
the menu choices.

Table 4.5 MISC Menu Choices and Explanations

MISC

Submenu1 Remark

CODE Display ADC's code, this code can be after no-filter, filter1 or filter2

VOL Display voltage; calibrate voltage; set full charged voltage and low battery voltage
DATE Display date and set date
TIME Display time and set time

VER Display firmware version

COM2.TY Display interface type of COM2

4.3.5 Test Menu

Figure 4.5 TEST Menu Chart

The figure above is an illustration of the available menus with the TEST menu. There
are no programming choices within this menu. Refer to Table 4.6 for explanations of
the menu choices.

Table 4.6 TEST Menu Choices and Explanations

TEST

Submenu1 Remark

DISP Test LCD or LED
COM1.RD Test COM1 receiving
COM1.TD Test COM1 transmitting
COM2.RD Test COM2 receiving
COM2.TD Test COM2 transmitting

KEY Test keys and buzzer

SBI521 Service Manual 53

4.4 Exit the Setup Menu

1. Power off the indicator by pressing and holding the [ZERO/off] key.

2. Move the slide switch on the rear cover back to the left and replace the metal
protective plate. Refer to section 4.2 for location.

3. Turn the indicator back on by pressing the [ON] key. The display will go
through a digit check, then settle into Normal Operating mode. All front panel
keys will now return to their normal mode of operation.

54 SBI521 Service Manual

5 Calibration

The config/cal switch must be set to the ON position in order to calibrate the indicator.

NOTE: More than 10% of the full scale weight is needed for calibration.

5.1 Calibration Mode

1. Access the setup mode by pressing the [SETUP] key for 3 seconds.

2. Use the [PRINT] key to select the CAL menu.

3. Press the [TARE] key to enter the calibration mode.

3a. After entering this mode, the number of calibrations will be shown first. This

number will be increment one digit after every calibration and calibration data
saved. This counter can't be modified or erased. It counts from 0000 to 9999,
when it reaches 9999, it starts over at 0000.

4. After the counter number was displayed, it will show "CAL.OFF" or "CAL-ON"
which depends on whether the sealed calibration switch is OFF or ON. If the
switch is OFF, the following steps can be done, but the result will not be saved.

5. Press the [TARE] key to go to next step.

Zero Point

1. When ZERO is displayed, remove all weight on the scale.

2. Press the [TARE] key to select zero point calibration.

3. The ZERO will flash while capturing the zero point. After getting reasonable
data, it automatically saves the change and exits to the weigh mode.

Linearity

The scale linearity can be calibrated with a zero reference and a full scale reference or
multiple linearity weight values. The linearity calibration is determined by the settings
in the CAL-LINE parameter.

1. When LINE is selected, press the [TARE] key to enter linearity calibration.

2. CAL.P0 will be displayed with a zero value. Remove all weight on the scale
and then press the [TARE] key to confirm zero point calibration. The zero
weight will flash while capturing the zero point. After getting the reasonable
zero-point data, the zero weight will become steady and then go to next step.

3. When first default standard weight is displayed after CAL.P1 being shown.
The default standard weight is 100%FS. Use the [HOLD], [PRINT], [N/G],
[UNIT] keys to input the value of the loaded weight.

4. Put corresponding weight (more than 10%FS weight) onto scale.

SBI521 Service Manual 55

5. Press the [TARE] key to confirm the calibration.

5a. The indicator will flash the input standard weight. When the weight becomes

steady the indicator will automatically go to next step. If this point can't be
calibrated correctly CAL.Er will be displayed. It is possible the weight load
onto scale is too small or the input data is incorrect. Repeat the previous steps.

6. When End.y is shown and the y is flashing, it's waiting command to exit
calibration or go on next calibration point. Use the [PRINT] or [N/G] key to
select yes or no.

7. Press the [TARE] key to confirm.

7a. If yes is selected, the calibration will be saved and exit to the weigh mode.

7b. If no is selected, it will go to next step.

8. When first default standard weight is displayed after CAL.P2 being shown.
The default standard weight is 100% FS. Use the [HOLD], [PRINT], [N/G],
[UNIT] keys to input the value of the loaded weight (more than 10% FS weight,
and larger than the weight used on CAL.P1) onto scale.

9. When End.y is shown and the y is flashing, it's waiting command to exit
calibration or go on next calibration point. Use the [PRINT] or [N/G] key to
select yes or no.

10. Press the [TARE] key to confirm.

11. When first default standard weight is displayed after CAL.P3 being shown.
The default standard weight is 100% FS. Use the [HOLD], [PRINT], [N/G],
[UNIT] keys to input the value of the loaded weight (more than 10% FS weight,
and larger than the weight used on CAL.P2) onto scale.

12. Press the [TARE] key to confirm.

13. When calibration is complete CAL.End will be displayed. The indicator will re­start and go back to the weigh mode.

5.2 Weight Fine-tune

With this function, the user can adjust displayed weight a little, and no need standard
weight. But please note:

l The scale must have been calibrated previously

l The range of adjustment is "(current displayed weight) x (0.9-1.1)". it means

the range is about ±10%

l The CONFIG-REGULA =NONE and CONFIG-FUNC-WT.ADJ=YES must be

set.

1. To enter this mode, turn on indicator. After the indicator displays a 0 weight,
place weight onto scale. The indicator will display the weight.

2. Press down [TARE] and [ZERO] at same time until first digit flashes, this
means indicator has entered into "weight fine-tune" mode.

3. Use the arrow keys to input correct weight.

4. Press the [TARE] key to confirm. The active correct weight will be displayed.

56 SBI521 Service Manual

5.3 Display ADC Output Code

In this mode, you can examine the stability of weighing system and increment the ADC
output code corresponding to the loaded weight.

Note:

l The increment of ADC code for full scale weight must be larger or equal to

10 times of selected display division. Otherwise, the calibration cannot be
properly completed.

m e.g. The display division is 0.1kg. Load 100kg standard weight on the

platform, the increment of ADC code should be at least more than
10x100kg/0.1kg= 10x1000=10000. In this case, the scale can be
calibrated. Otherwise, smaller division needs to be chosen.

l The variation of the ADC code should be small. Otherwise, the calibration

cannot be properly completed.

1. From the weigh mode press the [SETUP] key until CONFIG is shown.

2. Use the [PRINT] or [N/G] key to go to MISC - Code.

3. Press the [TARE] key to enter this mode and display the ADC output raw
code.

4. Press the [TARE] key to set the current code as a reference zero and then
display net code

5. Press [TARE] again to clear this reference and display gross code. From the
net code mode, press the [N/G] key to select net or gross code to display, not
clear the reference code.

6. In this mode, press the [UNIT] key to select displaying code that has been
filtered by no-filter, filter1 or filter1 and filter2 and corresponding annunciator
LO, OK, HI will be illuminated.

7. Press the [SETUP] key to return to last menu item.

8. Press the [ON/OFF] key to exit this mode

5.4 Display and Calibrate Power Voltage

In this mode, you can examine the voltage of battery or the voltage from the AC adaptor
when no battery is used. You can also calibrate the displayed voltage and set the
voltage value of low battery point.

Note:

l The end customer normally has no need to set the value of low battery and

full-charged voltage, calibrate the displayed voltage, these have been done
in factory.

l The normal displaying voltage is 5.6V-7.6V

1. From the weigh mode press the [SETUP] key until CONFIG is shown.

2. Use the [PRINT] or [N/G] key to go to MISC - Vol.

3. Press the [TARE] key to enter this mode and display the battery voltage.

SBI521 Service Manual 57

If the voltage is not correct

Calibrate the voltage according to following steps:

1. Prepare a DC power supply which output voltage can be adjusted from 5V to 8V
(output current must be larger than 0.5A). Power off the indicator and unplug the
AC adaptor.

2. Connect the DC power to battery connector on main board. Adjust the voltage
to about 6V

3. Turn on the indicator with the [ON/OFF] key.

1. From the weigh mode press the [SETUP] key until CONFIG is shown.

2. Use the [PRINT] or [N/G] key to go to MISC - Vol.

3. Press the [TARE] key to enter this mode and display the battery voltage.

4. Press down the [UNIT] key until CAL.6V is shown.

5. To adjust the voltage to 6V, press the [TARE] key to confirm 6V calibration.

6. When CAL.7V is shown, adjust voltage to 7V. Press the [TARE] key to confirm
7V calibration. When CV.End is shown, that means the voltage calibration is
completed and then exit to display voltage.

7. In displaying voltage mode, press the [N/G] key more than 3 seconds.

8. When LoV. 5.6 is shown, use the [PRINT] or [N/G], [UNIT] keys to input new
value (5.6V is default, input range is 5.2V-5.8V).

9. Press the [TARE] key to confirm and exit to display voltage.

10. Press the [SETUP] key to return to last menu item.

11. Press the [ON/OFF] key to exit this mode.

58 SBI521 Service Manual

6 Serial Communication

6.1 Com Port 1

COM1 is a RS-232 bid-directional port. Communication wires are connected to the RS­232 connector using TXD1, RXD1 and GND. Refer to page 9 for connection details.

6.2 Com Port 2

COM2 can be RS232 or RS485, if used as RS232, communication wires come from
RS232 connector, and TXD2, RXD2 and GND are used, if used as RS485,
communication wires come from RS485 connector, and A and B are used (if need GND
or +5VCC1 can be used).

Please refer to page 9 for jumper connector details.

6.3 Protocol

The baud rate and byte format is set by USER-COM1/2-BAUD.RT and USER-COM1/
2-BYT.FMT.

Responses to serial commands will be immediate, or within one weight measure cycle
of the scale. One second should be adequate for use as a time-out value by remote
(controlling) device.

6.4 Transaction String

The length of each item in a transition string:

l Reading data --- 6bytes

l Data polarity ----1byte: "-" for negative, and followed the first digit; " " for

positive.

l Decimal point ---1byte: "."

l Measure unit ----1-5bytes:" lb"," kg","lb:oz","pcs","%". Units are always lower

case, left aligned

l Current status-- 4bytes

m If the weight is over capacity, the scale will return eight "^" characters

(the field of polarity, decimal point, weight data is filled by "^").

m If the weight is under capacity, it will return eight "_" characters (the field

of polarity, decimal point, and weight data is filled by "_").

m If the zero point is error, it will return eight "-" characters (the field of

polarity, decimal point, and weight data is filled by "-").

Useless leading 0 before digits is suppressed, reading weight is right aligned.

SBI521 Service Manual 59

Table 6.1 Symbols Used

<LF> Line Feed character (hex 0AH)

<CR> Carriage Return character (hex 0DH)

<ETX> End of Text character (hex 03H)

<SP> Space (hex 20H)

H

1H2H3 H4

Four current status bytes

<P> Polarity character: "?" or " "

W 1---W6 Reading data, 1-6 bytes (six digits)

<DP> Decimal point

U

1U2 U3U4U5

Measure units, kg, lb, lb:oz, % or pcs; 2-5 bytes

<Add> Address of scale; 2 bytes (00-99)

<Prompt> Prompt characters of output content; max. 11bytes

Table 6.2 Bit Definition of H

Bit

Byte 1 (H1) Byte 2 (H2) Byte 3 (H3) Byte 4 (H4)

0 0 = stable 0 = not under capacity 00 = compare disable

1 = not stable 1 = under capacity

1 0 = not at zero point 0 = not over capacity

01 = lower limit
10 = ok
11= upper limit

1H2H3 H4

00 = normal weighing
01 = count weighing
10 = percent weighing
11 = other mode

1 = at zero point 1 = over capacity

2 0 = RAM ok 0 = ROM ok 0 = gross weight 0 = not in HOLD

1 = RAM error 1 = ROM error 1 = net weight 1 = in HOLD

3 0 = eeprom OK 0 = calibration ok 0 = initial zero ok 0 = battery ok

1 = eeprom error 1 =calibration error 1 = initial zero error 1 = low battery

4 always 1 always 1 always 1 always 1

5 always 1 always 1 always 1 always 1

6 always 0 always 1 always 1 always 0

7 parity Parity parity Parity

60 SBI521 Service Manual

6.5 Commands and response

Set the USER-Com 1/2-LAYOUT parameter

6.5.1 Single

Command: W<CR> (57h 0dh), request current reading

Response

<LF>^^^^^^^^U

1U2 U3U4U5

<LF>_ _ _ _ _ _ _ _ U

<LF> - - - - - - - - U

Note: U

1U2 U3 U4U5

<LF><P>W

1U2 U3 U4U5

1W2W3W4W5

<CR><LF> H1H2H3 H4<CR><ETX>---over capacity

1U2 U3 U4U5

<CR><LF> H1H2H3 H4<CR><ETX>---under capacity

<CR><LF> H1H2H3 H4<CR><ETX>---zero-point error

is 1,2,3 or 5 bytes according to current unit: %, kg, lb, pcs, lb:oz

<DP>W6 U1U2 U3 U4U5<CR><LF> H1H2H3 H4 <CR><ETX>---normal data

Note: (1) The decimal point position is determined by CONFIG-PRIM.D
(2) If current unit is "lb:oz", the format will be similar with following:

<LF><P>W

lb<SP>W4W5<DP>W6oz<CR><LF> H1H2H3 H4 <CR><ETX>

1W2W3

Command: S<CR> (53h 0dh), request current status

Response

<LF> H

1H2H3 H4

<CR><ETX>

Command: Z<CR> (5ah 0dh)

Response

Zero function is activated (simulate ZERO key) and it returns to current scale status.

<LF> H

1H2H3H4

<CR><ETX>

If ZERO function cannot be activated, it will return to current scale status.

Command: T<CR> (54h 0dh)

Response

TARE function is activated (simulate TARE key), and then returns scale status.

<LF> H

1H2H3 H4

If TARE function cannot be activated, it will return to current scale status.

SBI521 Service Manual 61

<CR><ETX>

Command: U<CR> (55h 0dh)

Response

Changes units of measure (simulate UNIT key) and return scale status with new units,
The new measure unit should be allowed to use

<LF> U

1U2 U3 U4U5

<CR><LF> H1H2H3 H4<CR><ETX>

Command: L<CR> (4ch 0dh)

Response

If Hold function can be activated, it will enable/disable hold function (simulate HOLD key) and returns scale status.

<LF> H

1H2H3H4

<CR><ETX>

Command: X<CR> (58h 0dh)

Response

Power off the scale, just like press down the ON/OFF key to turn off the scale.

Command: all others

Response

Unrecognized command

<LF>? <CR><ETX>

Table 6.3 Summary of Command and Response:

Command Response

ASCII HEX

W<CR> 57 0d Read scale weight:

<LF>^^^^^^^^U1U2 U3U4U5<CR><LF> H1H2H3 H4<CR><ETX>---over
capacity
?<LF>________U1U2U3U4U5<CR><LF> H1H2H3 H4<CR><ETX>---under
capacity
?<LF>-------- U1U2 U3 U4U5<CR><LF> H1H2H3 H4<CR><ETX>---zero-point
error
?<LF><p>W1W2W3W4W5<dp>W6U1U2U3U4U5<CR><LF>H1H2H3H4<CR
><ETX>---normal data

S<CR> 53 0d <LF> H1H2H3H4<CR><ETX>; read scale status

Z<CR> 5a 0d <LF> H1H2H3H4<CR><ETX>; simulate ZERO key

T<CR> 54 0d <LF> H1H2H3H4<CR><ETX>; simulate TARE key

U<CR> 55 0d <LF> U1U2 U3 U4U5<CR><LF> H1H2H3H4<CR><ETX>; simulate UNIT key

L<CR> 4c 0d <LF> H1H2H3H4<CR><ETX>; simulate HOLD key

X<CR> 58 0d power off the scale, simulate OFF key

others <LF>? <CR><ETX>

62 SBI521 Service Manual

6.5.2 Multiple

Output string frame

<LF><Add><Prompt><p>W

1W2W3W4W5

<Dp>W6 U1U2 U3 U4U5<CR>

---- Line number and content are determined by setting of USER-OUT1/2-xxxx

<LF><Add><Prompt>H

1H2H3 H4

<CR> ---- USER-OUT1/2-STATUS is set to YES

<LF><Add><CR> --- USER-OUT1/2-LINE is set to LINE1/2/3/4

---The number of blank lines is determined by USER-OUT1/2-LINE setting

<ETX> --- Last byte of string frame

Caution

l The decimal point position is determined by the CONFIG-PRIM.D

parameter.

l The unit position and bytes is determined by which current unit is used.

l The details of <Prompt> refer to the content in 4.3USER Submenu.

l If USER-COM2-EN.ADDR is set to NO, no <Add> will be output.

l In hold mode, if ADC conversion speed is set to high speed (80Hz), USER-

COM1/2-LAYOUT is set to MULTIPLE and many transmissions are selected
to output, the output contents from COM1 or COM2 may not catch up with
the data processed in indicator, If you want to watch real time data, you need
to select fewer output contents and set higher baud rate for COM1 or 2.

Example Layouts

When USER-OUT1/2-xxxx is set to YES (USER-COM2-EN.ADDR=No):

Weighing Mode:

SCALE ID: 123456

GROSS: 123lb 4.56oz

TARE: 11lb 2.22oz

NET: 112lb 2.34oz

ACC. N: 8

TOTAL: 789lb 15.2oz

DATE: 2011-06-12

TIME: 12:34:56

A/D CODE: 1234567

VOLTAGE: 6.7V

STATUS: bpq2

SBI521 Service Manual 63

Counting Mode:

SCALE ID: 123456

GROSS: 1234.55kg

TARE: 12.15kg

NET: 1222.40kg

QUANTITY: 24448pcs

PIECE WT: 0.05kg

ACC. N: 10

TOTAL: 23456pcs

DATE: 2011-06-12

TIME: 12:34:56

A/D CODE: 1234345

VOLTAGE: 6.7V

STATUS: bpq2

Percent weighing mode:

SCALE ID: 123456

GROSS: 12345lb

TARE: 10lb

NET: 12335lb

PERCENTAGE: 91.4%

1% REF. WT: 135lb

ACC. N: 3

TOTAL: 271.6%

DATE: 2011-06-12

TIME: 12:34:56

A/D CODE: 1231234

VOLTAGE: 6.7V

STATUS: bpq2

6.5.3 CONFIG-AD.FROM=COM2

When CONFIG-AD.FROM is set to COM2, the original raw counts of weight are coming
from COM2. The raw counts from A/D chip on the local PCB are ignored.

NOTE:

(1) In legal trade application, CONFIG-AD.FROM=COM2 may be not allowed.
Please contact with your local legal metrology organization!

(2) In this application, Baud rate and byte format of COM2 is fixed to 9600bps and
8N1.

64 SBI521 Service Manual

The data frame format from COM2 is:

<CR><LF><STX><STH><STL><W1H><W1L><W2H><W2L><W3H><W3L><ETX>

Total 12 bytes are in a frame string. W1W2W3 is 24bits output raw counts from ADC
(Hex format), (ST) is status byte, <XXH>is its high order 4 bits of XX and <XXL> is its
lower order 4bits of XX

Status byte definition:

Bit STH Bit STL

4 0= in working

1=be going to power off

5 X 1 0= no AD error

6 0 2 0=not new data

7 0 3 0=voltage is not low

When Indicator is going to power off, it outputs following content to COM2:

<STX> "OFF"<ETX><CR><LF>

0 0= AD is not over

1=AD is ove

1= AD error

1=new data

1=voltage is low

6.5.4 Communication when USER-COM1/2-LAYOUT is set to 200S/200F:

Commands and response

Command:

W <CR>(57h 0dh) or P<CR> (50h 0dh), request current reading

Response:

The indicator will not respond if the scale is in motion, positive overload or negative
overload.

Figure 6.1 Set for 200S

SBI521 Service Manual 65

Note: When Units = lb:oz, response:

<STX><POL>xxxLxx.xO<G/N><STAT><CR><LF>

Or <STX><POL>xxxxxLxxO<G/N><STAT><CR><LF>

Figure 6.2 Set for 200F

Note: When Units = lb:oz, response:

<STX><POL>xxx<SP>lb<SP>xx.xoz<SP><GR/NT><CR><LF>

Or <STX><POL>xxxxx<SP>lb<SP>xxoz<SP><GR/NT><CR><LF>

Command: Z<CR> (5ah 0dh)

Response: Zero function is activated (simulate ZERO key). The indicator will not
respond if the scale is in motion, positive overload or negative overload. The indicator
will also not respond if it is not in gross mode or within the zero range specified in the
Setup Menu.

<STX> OK<CR><LF>

Command: T<CR> (54h 0dh)

Response: TARE function is activated (simulate TARE key). The indicator will not
respond if the scale is in motion, positive overload or negative overload. The indicator
will also not respond if it displaying a negative gross value.

<STX> OK <CR><LF>

Command: C/U<CR> (43h/55h 0dh)

Response: Changes units of measure (simulate UNIT key),

<STX> OK<CR><LF>

Command: G<CR> (47h 0dh)

Response: This command is sent to the indicator to revert to gross mode. The indicator
will not respond if the scale is in motion, positive overload or negative overload. The
indicator will also not respond if it is not in net mode.

<STX> OK<CR><LF>

66 SBI521 Service Manual

Command: N<CR> (4eh 0dh)

Response: This command is sent to the indicator to revert to gross mode. The indicator
will not respond if the scale is in motion, positive overload or negative overload. The
indicator will also not respond if it is not in gross mode or a tare has yet to be
established.

<STX> OK<CR><LF>

Command: all others

Response: Unrecognized command

<STX>?? <CR><LF>

Table 6.4 Summary of Command and Response

Command Response

ASCII HEX

P<CR>

W<CR>

Z<CR> 5a 0d <STX> OK<CR><LF>; simulate ZERO key

T<CR> 54 0d <STX>OK<CR><LF>; simulate TARE key

C<CR>
U<CR>

G<CR> 47 0d <STX>OK<CR><LF>;

N<CR> 4e 0d <STX>OK<CR><LF>;

others x <STX>? ?<CR><LF>

50 0d
57 0d

43 0d
55 0d

Read scale weight:
<STX><POL>xxxxx.x<L/K><G/N><STAT><CR><LF> (200S)
<STX><POL>xxxxx.x<SP><LB/KG><SP><GR/NT><CR><LF> (200F)

<STX> OK<CR><LF>; simulate UNIT key

SBI521 Service Manual 67

7 Legal for Trade

Config/Cal Switch Seal

Power

Com 1/2

Loadcell

Config/Cal Switch ON

The Model SBI-521 must be configured to meet regulations mandated by local weights
and measures authorities.

7.1 Configuration/Calibration Switch

The configuration/calibration switch is used to protect the indicator from being
configured or calibrated under legal for trade conditions. When set to legal for trade and
sealed with a lead seal, the indicator can only be configured and calibrated by
authorized personnel.

The switch is located under the triangle plate on the back panel. Remove the three
screws which hold the cover on.

68 SBI521 Service Manual

The switch must be set in the ON position (switch is to the left).

7.2 Audit Trail Parameters

Two separate incrementing, non-resetable audit trail parameters are used by the Model
SBI-521 to indicate changes to various parameters or calibration.

7.2.1 View Configuration Counter

1. Press and hold the [SETUP] key for 3 seconds. CONFIG is displayed

2. Press the [TARE] key.

2a. The display will briefly show the number of times the configuration has been

changed and saved up to 999.

To Exit:

1. Press the [ON/OFF] key. Exit? is displayed.

2. Press the [TARE] key to return to weigh mode.

7.2.2 View Calibration Counter

1. Press and hold the [SETUP] key for 3 seconds. CONFIG is displayed.

2. Press the [FUNC] key twice. Cal is displayed.

3. Press the [TARE] key.

3a. The display will briefly show the number of times the configuration has been

changed and saved up to 999.

To Exit:

1. Press the [ON/OFF] key. Exit? is displayed.

2. Press the [TARE] key to return to the weigh mode.

SBI521 Service Manual 69

8 Troubleshooting

This chapter gives explanations on commonly seen errors, display characters and
display symbols.

8.1 Display Characters

ASCII LCD/LED ASCII LCD/LED ASCII LCD/LED

0AN

1BO

2CP

3DQ

4ER

5FS

6GT

7HU

8IV

9JW

KX

LY

MZ

70 SBI521 Service Manual

8.2 Display Symbols

Symbol Description

0------ Zero is over the setting range
0_______ Zero point is below the setting range
Ad------ Signal to ADC is over maximum range
Ad______ Signal to ADC is below minimum range

-------- Weight is over upper limitation or display data is over limitation
________ Weight is below lower limitation
EEP.E1 CONFIG or CAL parameters are not correctly set
EEP.E2 USER parameter is not correctly set
Lo.bAt Battery voltage is lower than setting
CAP.- - - Next displaying content is capacity
CAP.ER Parameters about Capacity is not correct
CAL.Px Calibration on point (x)
CAL.OFF Calibration seal switch is on OFF position
CAL.ON Calibration seal switch is on ON position
CAL.Er Calibration error, maybe input data or loaded weight is incorrect, unstable, non-linear
CAL.End End calibration
OFF Power OFF the indicator
STB.ER Unstable time is larger than setting of USER-OTHER-NLD.RNG
AC.xxxx Accumulation times is xxxx
PR.TARE Preset TARE weight
COMP Input COMPARE data mode
HIGH Input HIGH limitation data of Comparison
LOW Input LOW limitation data of Comparison
SPL.Lo Sample load weight of low point.
SPL.HI Sample load weight of high point.
SPL.PWT Sample goods weight to calculate piece weight
INP.PCS Input number of pieces being counted
UNIT.KG Unit kg is selected
UNIT.LB Unit lb is selected
PWT.ER Piece weight error, sample too small (<0.5d)
SPL.PCT Sample goods weight to calculate
INP.PCT Input percentage of weighted goods
PCT.ER Unit percentage weight is too small (<0.5d)

SBI521 Service Manual 71

8.3 Error Messages and Troubleshooting

Symptom Probable Cause Remedy

Ad------ Loadcell wires to indicator are incorrectly
Ad______

0------ Weight reading exceeds Power On Zero limit. Make sure scale platform is empty. Perform zero

0______ Weight reading below Power On Zero limit. Install platform on scale. Perform zero calibration.

-------- Weight reading exceeds Overload limit or the

________ Weight reading below Under load limit. Install platform on scale.Perform zero calibration.
EEP.E1 CONFIG or CAL parameters are not correctly

EEP.E2 USER parameter is not correctly set. Re-set items in USER.
CAP.ER Capacity parameters are not correct. Set PRIM.N/PRIM.d/SECND.n to correct number,

CAL.Er Calibration error. Input data or loaded weight is

PWT.ER Piece weight is error, it's too small (<0.5d), The

PCT.ER Unit-Percentage -Weight is error, it's too small

STB.ER USER-HOLD-STB.TIM is too short, USER-

Will not turn on. Power cord not plugged in or properly

Cannot zero the display
or will not zero when
turned on.

Cannot display weight in
desired weighing unit.

Battery symbol is empty
or Lo.bAt is shown

connected, shorted, opened, ADC or loadcell(s)
are damaged.

weight value cannot be displayed in the current
unit of measure because it exceeds 6 digits.

set.

too small, too big, unstable, non-linear.

weight on the platform is too small to define a
valid reference weight.

(the weight of 1%, 0.1%, or 0.01%-determined
by CONFIG-FUNC-PERCNT is less than 0.5d).

HOLD-HLD.RNG is too small, other failure.

connected. Power outlet not supplying
electricity. Battery discharged. Other failure.

Load on scale exceeds allowable limits. Load
on scale is not stable. Load cell damage.

Unit not set to enable or d≥5oz, when unit is
lb:oz.

Batteries are discharged. Charge batteries.

Make sure wires are ok and correctly connected.
Replace loadcell or ADC chip, Service required.

calibration.

Reduce load on scale until weight value can be
displayed. Use a more appropriate unit of measure.
Re-set some parameters of CONFIG or USER.

Re-set items in CONFIG, do calibration.

make sure capacity not more than 6 digit.

Input correct data, load correct weight onto
platform, Service required.

Use a greater weight for the sample.

Use more weight for the sample.

Set USER-HOLD-STB.TIM longer, or set USER­HOLD-HLD.RNG bigger. Service required.

Check power cord connections. Make sure power
cord is plugged into the power outlet. Check power
source. Replace batteries. Service required.

Remove load on scale. Wait for load to become
stable. Service required.

Enable unit in CONFIG-UNITS.

72 SBI521 Service Manual

Addendum 1: Quick Setup and Configuration

9.1 Configure the SBI-521 to a Floor Scale

9.1.1 Setting the Capacity and Count by

1. Refer to the next page for wiring and of sense line jumpers placement.

2. Press the [HOLD/SETUP] key for 3 seconds. The indicator shows Config to
indicate that you are in Setup Menu mode.

3. Press the [TARE] key once. (Tare is also used as an Enter key).

4. The display will show the Audit Trail counter then cycle to CFG.ON.

4a. If the display shows CFG.OFF, then remove the CAL seal on the back of the

indicator. Move the switch to the opposite position. Cycle power on the indicator
and go back to step 1.

5. Press the [TARE] key once. Display will show RESET.

6. Press the [PRINT] key until the display shows PRIM.N.

Table 9.1 Reference to Number of Divisions and Division Size

Capacity
Required

2000 4000 .5

5000 5000 1

10000 5000 2

7. Press the [TARE] key once. The display will show 003000 (this is the
number of divisions).

8. Press the [UNIT] key 3 times and the 3 should be flashing.

9. Press the [N/G] key 2 times until the 5 is displayed. (example for 5000 x 1 lb)

10. Press the [TARE] key once.

11. Press the [PRINT] key once until the display shows PRIM.D.

12. Press the [TARE] key once. Make sure the display shows 1.

13. Press the [TARE] key once. The display should show PRIMM.D.

14. Press the [PRINT] key once until the display shows PRIM.UT.

PRIM.N PRIM.D

15. Press the [TARE] key once. The display should show KG.

16. Press the [PRINT] key once.

17. Press the [TARE] key once.

18. Press the red [ZERO] key 2 times.

SBI521 Service Manual 73

19. The display will cycle power. After the indicator reboots, the display will show

1

7

E+

SE+

E-

SE-

S+

S-

SFG

the software version and capacity followed by the weighing mode.

9.1.2 Loadcell Connection and Jumpers

Table 9.2 Loadcell Jumper Connector(JP3)

Connected Pins Function

Table 9.3 Loadcell Terminal Block (typical Brecknell color code)

Pin Wire Color

4 wire loadcell is used

6 wire loadcell is used

1Red

2N/A

3Black

4N/A

5 Green

6White

7 Enclosure ground lug

Figure 9.1 Loadcell Connector

74 SBI521 Service Manual

4-wire
jumper
configuration

Figure 9.2 Loadcell Jumper Location

SBI521 Service Manual 75

Addendum 2: SBI-521 Calibration

1. Access the setup mode by pressing the [HOLD/SETUP] key for 3 seconds.
The indicator shows Config to indicate that you are in Setup Menu mode.

2. Press the [PRINT] key to select the CAL menu.

3. Press the [TARE] key to enter the calibration menu.

3a. After entering this mode, the number of calibrations will be shown first. This

number will increment one digit after every calibration and calibration data
saved.

3b. After the counter number above was displayed, it will show CAL.OFF or

CAL.ON which depends on whether the sealed calibration switch is OFF or
ON. If CAL OFF is displayed, you can still do calibration but the result will not
be saved. To turn CAL ON, power down the unit and flip the switch located on
the back of the indicator under the triangle stainless steel plate. Power back on
and follow the steps above.

4. Press the [TARE] key to go to next step.

5. Press the [PRINT] key to display LINE.

6. When LINE is selected, press the [TARE] key to enter linearity calibration.

7. CAL.PO will be displayed with a zero value. Remove all weight on the scale
and then press the [TARE] key to confirm zero point calibration. The zero
weight will flash while capturing the zero point. After getting the reasonable
zero-point data, the zero weight will become steady. Proceed to the next step.

8. When first default standard weight is display after CAL.P1 being shown. The
default standard weight is 100% of full scale. Using the [HOLD], [PRINT],
[N/G], [UNIT] keys to input the value of the loaded weight. Minimum test
weight value 10% of full scale.

9. Put corresponding weight onto the scale.

10. Press the [TARE] key to confirm the calibration.

11. If calibration was successful, display will show END.Y and the Y is flashing. It
is waiting for a command to go onto the next calibration point or exit the
calibration mode. Use the [PRINT] or [N/G] key to select yes or no.

12. Press the [TARE] key to confirm.

12a. If yes is selected, the calibration will be saved and exit to the weigh mode.

12b. If no is selected, it will go to the next step.

13. When first default standard weight is displayed after Cal.P2 being shown.
The default standard weight is 100% of full scale. Use the [HOLD], [PRINT],
[N/G], [UNIT] keys to input the value of the loaded weight. (More than 10% of
full scale weight, and larger than the weight used on CAL.P1) onto scale.

14. If calibration was successful, display will show END.Y and the Y is flashing. It
is waiting for a command to go onto the next calibration point or exit the
calibration mode. Use the [PRINT] or [N/G] key to select yes or no.

15. Press the [TARE]

15a. If yes is selected, the calibration will be saved and exit to the weigh mode.

76 SBI521 Service Manual

key to confirm

15b. If no is selected, it will go to the next step.

16. When first default standard weight is displayed after Cal.P3 being shown.
The default standard weight is 100% of full scale. Use the [HOLD], [PRINT],
[N/G], [UNIT] keys to input the value of the loaded weight (more than 10% of
full scale weight and larger than the weight used on CAL.P2) onto scale

17. Press the [TARE] key to confirm.

18. When calibration is complete CAL.END will be displayed. The indicator will
restart and go back to the weigh mode.

SBI521 Service Manual 77

Addendum 3: Drum Weigher Setup

1. Turn on the indicator and go in to the Config setting by pressing and holding
down the [SETUP] key until CONFiG is displayed.

2. Press the [TARE] key and the display will show CFG. ON. If CFG.OFF is
displayed, move the seal switch under the triangle plate on the back panel.

3. Press the [TARE] key and the display will show RESET.

4. Press the [PRINT/FUNC] key and the display will show REGULA.

5. Press the [TARE] key and if the indicator is set at factory default, the display
should show USA.

6. Press the [PRINT/FUNC] key until NONE is displayed.

7. Press the [TARE] key and REGULA should be shown on the display.

8. Set your PRIM. N, PRIM. D, PRIM. UT, SECND. N, UNITS, MOTION,
OVER.LD as require for the capacity and division size in Appendix 1.

9. Press the [PRINT/FUNC] key until ZRO. PNT is displayed.

10. Press the [TARE] key and the display will show IZSM.

11. Press the [TARE] key. Change the value to be 000 by using your directional
arrow keys on the keypad.

12. Press the [TARE] to confirm your setting. The display will show IZSM.

13. Press the [PRINT/FUNC] key and the display will show IN.IZSM.

14. Press the [TARE] key and toggle by using the [PRINT/FUNC] key until
LAST.Z.T is shown on the display.

15. Press the [TARE] to confirm the setting. The display will show IN.IZSM.

16. Press the [PRINT/FUNC] key and the display will show OV.IZSM.

17. Press the [PRINT/FUNC] key until the display shows LAST.Z.T.

18. Press the [TARE] key and the display will show OV.IZSM.

19. Press the [PRINT/FUNC] key and the display will show SAZSM.

20. Press the [TARE] key and the display will show a number. Change this
number to 000 by using your directional arrow keys on the keypad.

21. Press the [TARE] key to confirm the setting and the display will show SAZSM.

22. Press the [PRINT/FUNC] key and the display will show AZSM.

23. Press the [TARE] key and the display will show a number. Change this
number to 000 by using the directional arrow keys on the keypad.

24. Press the [TARE] key to confirm the setting and the display will show AZSM.

25. Press the [ZERO/OFF/ON] key and the display will show Exit.?.

26. Press the [TARE] key to confirm the setting and exit the configuration setting.

27. Proceed to Calibration (Appendix 2) and calibrate as required.

78 SBI521 Service Manual

Brecknell USA

1000 Armstrong Dr.
Fairmont MN 56031
Tel:[phone]
Fax:[phone]
Email: [e-mail]
http://www.brecknellscales.com

Brecknell UK

Foundry Lane,
Smethwick, West Midlands,
England B66 2LP
Tel:[phone]
Fax:[phone]
Email:
[e-mail]
http://www.brecknellscales.com