BTEK WorldWEIGH BWS Series Technical Manual

BWS

Series

Indicator

Technical Manual

800-000316

V1.09p

CONTENTS

1. SPECIFICATION... 2

2. INTRODUCTION... 3

Charging...3

3. INSTALLATION. 4

Installation.. 4

Wiring ....

4

4. KEYS DESCRIPTION... 6

Key Board... 6

Secondary functions of the keys.8

5. OPERATION 8

5.1. Basic Operation... ...8

1. Power On /Off..8

2. Zero...8

3. Tare...8

4. Select Unit8

5.2. Check Weighing..9

5.2.1. Set Limits......9

5.2.2. Set Check Weighing...9

5.3. Accumulation10

5.3.1. Memory Recall.....10

5.3.2. Memory Clear...10

5.3.3. Automatic Accumulation...11

5.4. Parts Counting.....11

5.5. Animal Weighing..12

5.6. Key Board Lock12

5.7. Set Auto Power Off..13

5.8. Set Back Light..13

6. PARAMETERS.14

7. CALIBRATION ..

18

8. RS-232 OUTPUT19

8.1. Specifications.19

8.2. Connecter19

RS-232 Output19

8.3. Continuous output protocol.19

9. DRAWING20

9.1. BWS Drawing20

9.2. BWS Parts List..21

10. ERROR CODES..22

BWS Series Indicator Technical Manual

PRECAUTIONS

WARNING

DISCONNECT ALL POWER TO THIS UNIT

BEFORE INSTALLING, CLEANING, OR

SERVICING. FAILURE TO DO SO COULD

RESULT IN BODILY HARM OR DAMAGE TO

THE UNIT.

CAUTION

• Only qualified Service personal to service this instrument

• Before connecting or disconnecting any components, Disconnect power.

• Failure to observe these precautions could cause bodily harm or damage or destruction of the equipment.

• The BWS weighing indicator is a precision electronic instrument, handle with care.

• Do not install in direct sunlight.

• Verify the local voltage and receptacle type are correct for

the scale.

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

• Avoid unstable power sources. Do not use near large consumers of electricity such as welding equipment or large motors.

• Avoid sudden temperature changes, vibration, wind and water.

• Avoid heavy RF noise.

• Avoid high stactic areas.

• Keep the indicator clean.

- 1 -


1. SPECIFICATION

Model

Resolution

Key Pad

Power

BWS

Display

Housing

52mm LCD/ 2” LCD

Stainless Steel

Operating Temperature 0°C - 40°C / 14°F - 104°F

1/30,000 (Non Approved) 1/6000 (NTEP Approved)

7 Keys

Calibration

Interface

Load cell drive Voltage

Load Cells

ADC

ADC Update

Stabilization Time

Battery (6V/4Ah) estimated run time on fully charged battery 50 hours

Automatic External

1 RS-232 Output

Max: 5V/150mA

Up to 4 load cell

Sigma Delta

≤1/10 second

One second typically

- 2 -


2. INTRODUCTION

The BWS series weighing indicator amplifies signals from a load cell, then converts it to digital data and displays it as a mass value number

It is suitable for general weighing or more specialized applications such as check weighing, animal weighing and accumulation applications

Can be connected to a printer, PC, or scoreboard

Large LCD with white LED back light displays

Charging

• To charge the battery, plug cord into power outlet. The scale does not need to be turned on, to charge.

• The battery estimated charge time to full capacity is 12 hours.

• An LED to indicate the status of battery charge is located on the left side of the Display. When the scale is plugged into a power source the internal battery will be recharging. If the LED is green, the battery has a full charge.

If it is red, the battery is nearly discharged and if yellow, the battery is being charged.

• Verify that the AC power outlet is properly protected.

Note: Please charge the battery before using the scale for the first time .

- 3 -


Installation

3. INSTALLATION

• Place the Indicator on a table or connect to the supplied mounting bracket.

• Connect the load cell cable to the indicator Bd9 load cell connecter.

• Plug equipment into an easily accessible outlet with a protective ground/ earth contact.

• Turn BWS on with use of the On/Off key. If you want to turn off, press this key again.

• Display will start self checking/ followed by number of calibrations/ number of option changes/ then error 4/ Then enter into main weighing screen.

• Warm-up time of 15 minutes helps stabilizes the measured values after switching on.

• Calibrate with exact calibration weights, a minimum 1/3 of the scale capacity should be used for calibration. For calibration instructions see details under parameters.

Wiring

Supplied 18 foot cable (to load cells) Self made cable (from BWS)

SIG- Green Pins to DB9

SIG+ White 1 SIG-

EX- Black

2 SIG+

EX+ Blue

3

4

EX+

EX-

SEN- Yellow

5 SEN+

SEN+ Red

6 Connect to 7

Shield Grey

7 Connect to 6

SEN and EX needs to be tied

Together if no sense wires..

8 SEN-

9 Shield

Terminal strip and Cut pigtail wiring on the next page

- 4 -

Wiring

Cut Pigtail

Pins to DB9

Green

White

Brown

Black

Grey

Sheild

Blue

Yellow

Red

Wiring

Terminal

Strip


SIG-

SIG+

Shield

EX-

SEN-

Sen+

Ex+

I/O gnd (Must connect to red)

I/O (must be connected to Yellow)

- 5 -


Keyboard

4. KEYS DESCRIPTION

Keys Description

Power turn ON/OFF

Zero Display

To perform a tare function, subtracts weight

Accumulator key, current values will store to the memory, to send the data to printer or PC

Shift between Gross / Net Weight

Counting

To change the unit of measure

- 6 -


Secondary functions of the keys (Setup)

(See Parameter section 6)

Secondary Functions

To confirm the selected menu

Keys

To change the menu and active digit

To move the active digit to right

To move the active digit to left

To enter in to the menu

Escape from the menu to normal operation

- 7 -


5. OPERATION

Initial Start-up

Warm-up time of 15 minutes helps stabilizes the measured values after switching on.

5.1. Basic Operation

1. Power On/Off:

Switch on the BWS by pressing the key.

The display is now switched on and the start-up test has started, if wanting to switch off, press the

2. Zero:

key again.

Environmental conditions can lead to the BWS not being exactly zero even if the weighing platform is clear of a weight. However, you can set the display of your BWS to zero any time by pressing the therefore ensure that weighing starts at zero.

3. Tare:

key and

The weight of any container can be tared by pressing button so that with subsequent weighing the net weight of the object being weighed is always displayed.

• Load weight on the platform.

• Press key. Zero is displayed, and tare is subtracted.

• Remove weight from the platform. Tared weight is displayed. The BWS can only store one tare value. (see parameter P4) It will be shown with a minus value.

• Press to change between gross weight and net weight.

• To clear the tare value, remove the load and press displayed, tare weight is cleared. key. Zero is

4. Select Unit: (Units not being used can be disabled see parameter 6)

Press the key, to change units kg/g/lb/oz.

- 8 -


5.2. Check Weighing

The BWS can set an upper or lower limit when weighing with a limited range.

During the limit controls the BWS will indicate whether the upper or lower limits value has been met and an alarm will sound.

5.2.1. Setting Limits: and key together, display will show set h.

• Press

• Press

• Press blink.

key to select set h or set l key to confirm, display will show 00000 and the last digit will

• Enter the high limit value by using active digits and press

and keys to change the

key to increase the value.

• Press key to confirm, display will show set l

• Enter the Low limit value by using active digits and press

and keys to change the

key to increase the value.

• Press key to confirm.

To escape from the settings press

5.2.2. Set Check Weighing:

• Press and key.

key together, display will show set h.

• Press key to select display beep.

• Press key to confirm, display will show none or ok or ng

• Check mode none : No beep sound in the limits. Function turned off.

• Check mode ok : When the weight is between the limits . OK will show

and beeper will be sounded.

- 9 -


• Check mode ng : When the weight is out of the limits, the beeper will be

sounded and OK will show.

Note: Check weighing available only when weight more than 20d

5.3. Accumulation

The scale can be set to accumulate manually by pressing see the parameter p 1 Com » mode » pr 2

key. For settings,

Before operation scale should be stable and returned to zero, accumulation available only when weight is more than 20d.

Accumulation Operation

• Place the load on the platform.

• Press key, when STABLE is displayed on the screen.

• Display will be show acc 1 then will show the total saved value. These displays will only be shown for three seconds.

• Remove the weight from the platform.

• When display get zeroed and stable then place the second weight on the platform.

• This will continue until the memory gets full or 99 items.

5.3.1 Memory Recall:

To recall the memory press key.

Display will be show acc X (X: Total number of accumulations) then will show the total saved value. These displays will be shown for only three seconds.

5.3.2. Memory Clear:

To clear the memory, press and keys together.

Display will show Acc 0 , all accumulation memory will be cleared.

- 10 -


5.3.3. Automatically accumulation:

The scale can be set to accumulate automatically. For settings, see the parameter p 1 Com » mode » auto

Automatic Accumulation Operation

• Place the load on the platform.

• When display shows a STABLE indication, display will be show acc 1 then will show the total saved value. These displays will be shown only for three seconds.

• Remove the weight from the platform

• When display get zeroed and stable then place the second weight on the platform.

• This can continue until the memory gets full or 99 items.

5.4. Parts Counting

Parts Counting Operation

• Place the load on the platform

• To enter parts counting, press key, display will then show p 10

Press to change the parts quantity.

Options: p 10 / p 20 / p 50 / p100 / p 200

• Press key to confirm, display will show quantity of the item on the platform.

---- then will show the

• Then items can be added to the platform, display will update the parts quantity automatically.

key to go back to the weighing mode. Press

- 11 -


5.5. Animal Weighing

BWS can be used for unstable loads. This function is called animal weighing. For settings, see parameter p 3 oth » anm

When load is applied on the platform, after a few seconds of a stable weight, the reading will be locked.

Adding or removing loads, updates the weighing locked values.

To enter or exit animal weighing mode, press and release and together at the same time.

When in animal weighing mode HOLD will be indicated on the display. key

5.6. Keyboard Lock

To set key board lock, see parameter p 3 oth » lock

When the keys are not used within 10 minutes, the keys will be locked automatically.

After entering into the lock function, when a key is pressed display will show klok. Then will return to the normal display.

To unlock and use the keys again, press and hold , and keys for three seconds. Display will show u lck Then the BWS returns to the normal display.

- 12 -


5.7. Set auto power off

To set auto power off of the BWS

• Hold

• Press key three seconds display will show

key to change Set of and press setbl key to confirm.

• Press

Set of off

Of 5 key to change the options.

To set auto off function off, for scale always on

Set to turn off five minutes later

Of 15 Set to turn off fifteen minutes later

• After selecting the auto off option press key to escape from the settings.

5.8. Set Back Light

To set back light. key to confirm and press

• Hold key for three seconds display will show setbl

• Press setbl

au

on key to confirm.

off

To set auto option. When in use back light will be on, when use stops back light also will off.

To set always on. Back light will always be on.

To set back light off. Back light will be always off key to confirm and press • After selecting the back light option press key to escape from the settings.

- 13 -


6. PARAMETERS

For Key function in Setup menu see page 7

To setup parameters, turn on the scale.

• Press and Release

• Display will be show pn

key during the self checking countdown

• Press and release, then press and release, then release keys to enter setup, display will show p O CH-

and

• Inside the menu, Press key to confirm selection

Menu

P 0 CH -

CHECK

WEIGHING

P 1 CC om

COM PORT

SETTINGS

key to change selection and press

Sub Menu

Set H

Set lo beep

Mode

( Type of print Function)

Description

Set high limit for check weighing

Set low limit for check weighing

None No beep for check weighing

Ok Beep, when check weighing is between the limits ng Beep, when check weighing is out of the limits

Options:

Cont : Send data continuously

St 1 : Send data one time, when stable.

St c : Send data continuously, when stable

P r1 : Send data one time, when press Key (weight needs to return to zero)

Pr 2 : Send data to print and accumulation, when press .key

Auto : Auto accumulate and auto print mode when weight is stable and or return to zero.

Ask :NOT Used

Wireles :NOT Used

- 14 -


Baud

(Baud Rate)

Pr

(Parity)

Ptype

(Printer Type)

Lab

(Print Formats)

(these are not customizable)

To set the baud rate

Options:

600 / 1200 / 2400 / 4800 /

9600

To set the parity

Options:

7 e1 / 7 o1 / 8 n1

To set printer model

Options:

Tm295 : Epson tm295

Tm220 : Epson tm220

Lp50 : WorldWEIGH LP50

To set print format 4 choices

Options:

LAB 0

(Accumulation)

NO.

NET: 0.666kg

TARE: 0.222kg

GROSS: 0.888kg

TOTAL: 0.888kg

LAB 1

(G/T/N)

NET: 0.666kg

TARE: 0.222kg

GROSS: 0.888kg

LAB 2

(What is on the screen)

NET: 0.222kg or GROSS: 0.222KG

LAB 3

(Piece count ONLY)

U.W.: 0.00998 lb

NET : 1.996 lb

TOTAL: 200Pcs

LAB 4

(Piece count and normal weighing mode)

U.W.: 0.01000 lb

NET : 2.002 lb

TARE : 1.000 lb

TOTAL: 200Pcs <piece count

U.W.: 0.00000 lb

NET : 0.996 lb

TARE : 1.018 lb

TOTAL: 1.199 lb <gross

- 15 -


P 2 mod

MODE

(K3 to enter)

P3 ot

OTHER

H

Si g r

Dual 1

Dual 2

Lock anm

To select single range operation

Count To check internal counts

Deci

Div

Cap

To set decimal points

0 / 0.0 / 0.00 / 0.000

To set increment

1 / 2 / 5 / 10 / 20 / 50

Set Capacity

Cal gra

Calibration

Gravity

To select dual range - mode 1

Note: Once active second interval (div 2), Then second interval will work until display return to zero


Deci

Div


Di v 1 To select first division

Cap

Di v 2

Cap 1

Cap 2

To select second division

To select first capacity

To select second capacity

Cal Calibration gra Gravity (Do not Change)

To select dual interval - mode 2

Note: First interval will active in CAP 1

Second interval will be active in CAP 2


Deci

Div


Di v 1 To select first division

Di v 2 To select second division

Cap Cap 1 To select first capacity

Cap 2 To select second capacity

Cal gra

Calibration

Gravity

To set keypad lock

Options: on / off

To set animal mode.

Options: on / off

- 16 -

lb oz


P4 S t

TARE

PP 55 CLR

RESET

P6 Unt

UNIT

St ON

St OFF

CLr CAL

CLr oPt kg g

Multi tare operation turn on

Multi tare operation turn off

Clear all calibration data

Clear ALL parameters

To set “kg” unit Options: on / off

To set “g” unit Options: on / off

(lb or kg must be set to .000 to be able to turn on grams) once selected to the main weight screen change unit to g then enter back into P6 and you can turn off kg or lb if needed

To set “lb” unit Options: on / off

To set “oz” unit Options: on / off

- 17 -


7. CALIBRATION

Jumper K2 comes shorted Allowing Front Panel access to Calibration

if k2 is not shorted press K3 button inside the unit to enter calibration

To calibrate, turn on the scale.

• Press and release during the self checking countdown

• Display will be show Pn (Password)

• Press and release, then press and release, then release, to enter setup, display will show p O CH-

• Tap the Key until display will show p 2 mod .

and

• Press the key to confirm and press to select duaL 1 duaL 2 (single or Dual range)

• Press the

CAL key to confirm and press the key till display shows

• Press key to confirm.

Calibration

Ca

• Press the key to enter calibration, display will show

• Remove all the weight from the platform. unL dd

• When indicator is stable, press the key to confirm.

• The Display will show the last calibration weight. To change the calibration weight value, press and keys to select the active digits then the key to increase the value.

• When the calibration value is correct, press key to confirm.

• Display will show

L oad

• Place the calibration weight on the platform. (suggested 1/3 capacity)

• When indicator is stable, press key to confirm.

• Display will show pass

and continue to normal weighing mode

- 18 -


8. RS-232 OUTPUT

8.1. Specifications: (1 Com port)

RS-232 output of weighing data

Code : ASCII

Data bits : 8 data bits

Parity : Parity selectable

Baud rate : 600bps to 9600bps selectable

8.2. RS-232 (Db9 type connector)

Pin ２ RXD Input White

Pin ３ TXD Output

Blue

Receiving data

Transmission data

Pin ５ GND ― Green Signal ground

Db9 Connecter to computer/printer (null modem)

Indicator Computer

Pin 2: Pin 3

Pin 3: Pin 2

Pin 5: Pin 5

8. 3. Continuous output protocol

Weighing mode

<STX> <POL> <WWWWWWWW> <UNIT> <G/N> <S> <TERM>

ASCII 02 decimal

Polarity:

<space>=Positive

<->=Negative

Weight:7 digits, right-justified, dummy zeroes, decimal point with no leading zeroes except for leading zero immediately preceding the decimal point. leading zeroes transmitted as spaces.

G=Gross

N=Net

L= pounds

K= kilograms

O= ounces

G= grams

<CR><LF> or<CR>

Status:

<space>=Valid

I=Invalid

M=Motion

O=Over/under range

- 19 -


9.1. BWS Drawing

9. DRAWING

- 20 -


9.2. BWS Parts List

24

25

26

27

28

29

17

18

19

20

21

22

23

12

13

14

15

16

3

4

5

6

7

No Parts

1

2

Key Panel

Front Cover

8

9

10

11

Display Protection Plate

Nut

Main Board

Washer

Star (+) Self Thread screw

Water Proof Rubber Bar

Star (+) Screw

Washer

Battery Clamp

Washer

Star (+) Big head Screw

Bracket

Bracket Screw

Water Proof Adaptor jack

Interface Module

Air connecter

Plug

Rubber Spacer

Air Connecter

Back Cover

Air Connecter Water Proof

Nut

Battery

Nut

Main Serial board

Spacer

Star (+) Screw

Micro Switch Cap

Homerun 15Ft with DB9

Rs232 Board

1

1

1

1

1

7

1

1

1

1

1

1

1

3

6

6

1

2

1

1

6

1

6

6

1

2

2

1

Qty PN

1

1

899-300086

899-300085

899-300022

899-300041

899-300087

M4

M4x12

5Pin

7Pin

Spec

M3*6

8x3.1x1.5

M3x8

M4x10

M4

6V/4Ah

M3x6

3Mx20

- 21 -


Error Message

10. ERROR CODES

Description Solution

Maximum load exceeded Unload or reduce weight.

Low reading Re-check wiring

Zero setting error

Key board error

Zero setting range exceeded due to switching on.(4%max)

Make sure platform is empty.

Check the keys and connecter.

A/D value out of range Make sure platform is empty.

Check the load cell connectors.

Unstable Reading

Tare out of range

Over range

Calibration Error

Check any air variation, vibration, RF noise and binding somewhere.

Check the load cell and connecters.

Remove the load and restart scale again.

Remove the load.

Recalibrate

Recalibrate

Err p

Printer error flashing backlight Battery low

Ba LO

Battery low

Check the printer and settings.

Recharge battery, check the voltages.

Recharge battery, check the voltages.

- 22 -


B-TEK Scales

1510 Metric Avenue SW

Canton, OH 44706

Tel: (330) 471-8900

Fax: (330) 471-8909 www.B-TEK.com

- 23 -

BTEK WorldWEIGH BWS Series Technical Manual

Series

Indicator

Technical Manual

CONTENTS

PRECAUTIONS

WARNING

CAUTION

1. SPECIFICATION

2. INTRODUCTION

Charging

Installation

3. INSTALLATION

Wiring

Terminal strip and Cut pigtail wiring on the next page

Wiring

Wiring

Keyboard

4. KEYS DESCRIPTION

Secondary functions of the keys (Setup)

5. OPERATION

5.1. Basic Operation

5.2. Check Weighing

5.3. Accumulation

5.4. Parts Counting

5.5. Animal Weighing

5.6. Keyboard Lock

5.7. Set auto power off

5.8. Set Back Light

6. PARAMETERS

Calibration

7. CALIBRATION

Calibration

8. RS-232 OUTPUT

8.1. Specifications: (1 Com port)

8.2. RS-232 (Db9 type connector)

8. 3. Continuous output protocol

9.1. BWS Drawing

9. DRAWING

9.2. BWS Parts List

10. ERROR CODES

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