Instructions for VISION models including: VISION, TBWS, Washdown Bench Scales

TBWS-Technical manual en VTS v2 2020-05-18

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Washdown Bench scales - Vision Tech Shop

TBWS Washdown Bench Scales Technical Manual. - 4 -. 2. INTRODUCTION. ➢ The TBWS series weighing indicator that amplifies signals from a load cell,.

TBWS-Technical manual en VTS v2 2020-05-18

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PDF TBWS-Technical manual en VTS v2 2020-05-18
TBWS
Washdown Bench scales

TBWS Washdown Bench Scales Technical Manual
CONTENTS
1. SPECIFICATION ..........................................................................................- 3 2. INTRODUCTION ..........................................................................................- 4 3. INSTALLATION ............................................................................................- 5 -
3.1Unpacking.............................................................................................- 5 3.2 Installation............................................................................................- 5 3.3 Load cell connections ..........................................................................- 6 3.4 Connect Adaptor and Charging ...........................................................- 6 4. KEYS DESCRIPTION ...................................................................................- 7 5. OPERATION.................................................................................................- 9 5.1. Basic Operation ................................................................................- 9 5.2. Check Weighing................................................................................- 10 -
5.2.1. Set Limits................................................................................- 10 5.2.2. Set Check Weighing ...............................................................- 10 5.3. Accumulation ....................................................................................- 11 5.3.1 Memory Recall.........................................................................- 11 5.3.2. Memory Clear .........................................................................- 11 5.3.3. Automatically accumulation. ...................................................- 11 5.4. Parts Counting ..................................................................................- 12 5.5. Animal Weighing...............................................................................- 12 5.6. Keyboard Lock..................................................................................- 13 5.7. Set auto power off.............................................................................- 13 5.8. Set Back Light...................................................................................- 13 6. PARAMETERS ...........................................................................................- 15 7. CALIBRATION ............................................................................................- 17 8. RS-232 OUTPUT ........................................................................................- 18 8.1. Specifications:...................................................................................- 18 8.2. RS-232 (9pin D type connector) .......................................................- 18 8. 3. Continuously output protocol ...........................................................- 19 9. DRAWING ..................................................................................................- 20 10. ERROR CODES .......................................................................................- 23 -
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TBWS Washdown Bench Scales 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 THE UNIT.
CAUTION
 Permit only qualified persons to service the instrument  Before connecting or disconnecting any components, remove the
power.  Failure to observe these precautions could result in bodily harm or
damage to or destruction of the equipment.
 The weighing indicator is a precision electronic instrument, handle it carefully.
 Do not install the scale in direct sunlight.  Verify the local voltage and receptacle type are correct for
the scale.  Only use original adaptor, other could cause damage to the
scale.  Pluggable equipment must be installed near an easily
accessible socket outlet.  Avoid unstable power sources. Do not use near large users
of electricity such as welding equipment or large motors.  Avoid sudden temperature changes, vibration, wind and
water.  Avoid heavy RF noise.  Keep the indicator clean
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TBWS Washdown Bench Scales Technical Manual
1. SPECIFICATION
DIMENSIONS (inch/mm)

Model Display Housing Operating Temperature Resolution Keypad Power Calibration Interface Load cell drive Voltage Load Cells ADC ADC Update Stabilization Time

TBWS-100

TBWS-200

TBWS-500

2.05inch / 52mm LCD

Stainless steel

-10°C - 40°C / 14°F - 104°F

1/5000

7 Keys

AC (110V/60Hz)/ Battery (6V/4Ah)

Automatic External

RS-232 Output

Max: 5V/150mA

Up to 4 load cell

Sigma Delta

1/10 second

One seconds typical

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TBWS Washdown Bench Scales Technical Manual
2. INTRODUCTION
 The TBWS series weighing indicator that amplifies signals from a load cell, converts it to digital data and displays it as a mass value.
 It is suitable for general weighing or more specialized applications such as check weighing, animal weighing and accumulation applications.
 It can connect the indicator to a printer or a PC.  Large LCD with white LED back light displays
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TBWS Washdown Bench Scales Technical Manual
3. INSTALLATION
3.1Unpacking
When you receive the Indicator, inspect it to make sure that it is not damaged and that all are parts are included:
 Remove the Indicator from the carton.  Remove the protective covering. Store the packaging to use if you need to
transport the scale later.  Inspect the indicator for damage.  Make sure all components are included.
1. Indicator 2. Manual 3. Indicator holder (Optional) 4. Load cell Output connecter (Optional) 5. RS-232 Output Connecter (Optional)
3.2 Installation
 Place the Indicator on a table or use indicator holder to connect with stand.  Connect the plat form load cell cable to the indicator load cell connecter.
Load cell connecter is locating back side of the indicator.  Connect the adaptor pin to the indicator adaptor jack.
Adaptor jack is locating, back side of the indicator.  Adaptor connects into your AC power socket.
Pluggable equipment must be installed near an easily accessible socket outlet with a protective ground/ earth contact.  Turn on the On/Off key. If you want to turn off, press the key again.  Display will show the scale capacity and will be starting self-checking.  After self-checking, display will be come to normal weighing mode.  Warm-up time of 15 minutes stabilizes the measured values after switching on.  Calibrate with exact calibration weights, minimum 1/3 of the scale capacity should be used for calibration. For calibration see details in parameter.
Then you can start your operation.
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TBWS Washdown Bench Scales Technical Manual
3.3 Load cell connections
 Connect the load cell cables to the terminal as shown below. 7Pin Connection Pin 1 Signal Pin 2 Signal + Pin 3 Exc Pin 4 Exc + Pin 5 Sen Pin 6 Sen + Pin 7 Shield
 It can connect four 350 ohm load cells.  The load cell drive voltage is 5V DC ±5% between
Excitation + and Excitation -.
3.4 Connect Adaptor and Charging
 To charge the battery insert the adaptor pin to jack. Simply plug the adaptor into the main power. The scale does not need to be turned on.
 The battery should be charged for 8 hours for full capacity.  In lower left side of the keyboard is an LED to indicate the status of battery
charging. When the scale is plugged into the main power the internal battery will be recharged. If the LED is green, the battery is fully charged. If it is red, the battery is nearly out and if yellow, the battery is being charged.  Do not use any other type of power adaptor than the one supplied with the scale.  Verify that the AC power socket outlet is properly protected.
Note: Please charge the battery before using the scale for the first time.
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TBWS Washdown Bench Scales Technical Manual
4. KEYS DESCRIPTION
Key Board

Keys - 7 -

Description Power turn ON/OFF
Set the Zero Display
To perform a tare function, Subtracts weights.
Accumulator key, current values will store to the memory to send the data to printer or PC Shift to Gross / Net Weight.
Counting
To change the unit (kg/g/lb/oz)

TBWS Washdown Bench Scales Technical Manual
Secondary functions of the keys

Function 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 the menu

Escape from the menu to normal operation.

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TBWS Washdown Bench Scales Technical Manual
5. OPERATION
Initial Start-up Warm-up time of 15 minutes stabilizes the measured values after switching on.

5.1. Basic Operation

1. Power On/Off: Turn on the balance by pressing on/off key.
The display is switched on and the test is started and to turn off the scale,
press the key again.

2. Zero Environmental conditions can lead to the balance exactly zero despite the
platform not taking any strain. However, you can set the display of your

balance to zero any time by pressing starts at zero.
3. Tare

key, ensuring that the weighing

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 on the platform. Tared weight is displayed. It can set only

one tare value. 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.
4. Select Unit and Sampling operation

key. Zero is

Press

key, it can change unit and sampling operation.

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TBWS Washdown Bench Scales Technical Manual
5.2. Check Weighing
It can set an upper or lower limit when weighing with the limit range. During the limit controls, whether a value is within the upper or lower limits can
be known with an alarm sound.
5.2.1. Set Limits

 Press

and

key together, display will be show set h.

 Press

key to select set h or set l

 Press digit.

key to confirm, display will show 00000 and will blink the last

 Enter the high limit value by using

and

keys to change the

active digits and press

key to increment the value.

 Press

key to confirm, display will show set l

 Enter the high limit value by using

and

keys to change the

active digits and press

key to increment the value.

 Press

key to confirm.

 To escape from the settings press

key.

5.2.2. Set Check Weighing

 Press

and

key together, display will be show set h.

 Press

key to select display beep.

 Press

key to confirm, display will be shown 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 shown and beeper will be sounded.

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TBWS Washdown Bench Scales Technical Manual

 Check mode ng : When the weight is out of the limits, the beeper will be sounded and OK will shown.
Note: Check weighing available only when weight more than 20d
5.3. Accumulation

The scale can be set to accumulate manually by pressing

key. For settings,

see the parameter p 1 Com » mode » pr 2

Before operation scale should be stable and return to zero, accumulation

available only when weight more than 20d

Accumulation Operation

 Place the load on the platform.

 Press

key, when displayed STABLE indication.

 Display will be show acc 1 then will be show the total saved value. These

displays will be shown only three seconds.

 Remove the weight from the pan.

 When display get zero and stable then place the second weight.

 It can continue until the memory gets fully or 99 items.

5.3.1 Memory Recall

To recall the memory press

key when there is no load on the platform.

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

5.3.2. Memory Clear

To clear the memory, press

and

keys together.

Display will show Acc 0; all accumulation memory is cleared from the memory.

5.3.3. Automatically accumulation.

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

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TBWS Washdown Bench Scales Technical Manual
Automatic Accumulation Operation
 Place the load on the platform.  When display gets STABLE indication, 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 shows zero and stable then place the second weight.  It can continue until the memory gets fully or 99 items.
5.4. Parts Counting

To enter the parts counting, press p 10

key and select until display will be show

Press

to change the parts quantity.

Options: p10 / p20 / p50 / p100 / p200

Parts Counting Operation

 Place the load on the platform  Select the parts quantity as per the option  Choose from option depending on how many pieces/items are on the
scale

 Press

key to confirm, display will be shown ---- then will show the

quantity

 Then can add goods on the platform, display will update the parts quantity

automatically

Press

key back to the weighing mode.

5.5. Animal Weighing

TBWS can be used for weighing vibrating loads. This function can use for animal weighing. For settings, see the parameter p 3 oth » anm

Bring the load on the platform, when the load few seconds get stable, the reading will be locked for few seconds. It can add or remove loads also update the weighing locked values.

To enter or exit animal weighing mode, press be displayed or not..

key until HOLD indicator will

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TBWS Washdown Bench Scales Technical Manual

When in animal weighing mode HOLD indicator will be displayed.

5.6. Keyboard Lock

It can set lock key board, for settings, see the parameter p 3 oth » lock

When the keys are not using within 10 minutes, the keys will lock automatically. After entering the lock function, pressing any keys will cause the display to show k-lok. Then will come to normal display.

If want to unlock and want to use the keys press and hold

,

and

keys three seconds. Display will be show u lck Then will come to normal display

5.7. Set auto power off

It can set auto power of the scale, when scale not in use, scale will turn off after the setting time.

 Hold

key three seconds display will show setbl

 Press

key to change Set of and press

key to confirm

 Press

key to change the options.

Set of

off
Of 5 Of 15

To set auto off function turn off, for scale always on Set to turn off five minutes later Set to turn off fifteen minutes later

 After selecting the auto off option press

key to confirm and press

key to escape from the settings.

5.8. Set Back Light

It can set back light when scale is in use.

 Hold

key three seconds display will show setbl.

 Press - 13 -

key to confirm.

TBWS Washdown Bench Scales Technical Manual

au setbl
on
off

To set auto option. When start to use back light will be on and when stop the operation back light also will off.
To set always on. After turn on the power, back light also will be on.
To set back light turn off. No back light in the operations

 After selecting the back light option, press key to escape from the settings.

key to confirm and press

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TBWS Washdown Bench Scales Technical Manual

6. PARAMETERS

To set parameter, turn on the scale.

 Press

key during the self checking.

 Display will be show pn

 Press

,

and

to enter, display will be show po chk

(To access parameters P2 mod; P4 ST; P5CLR ,the jumper K2 need to make short; if K2 is not shorted ,press K3 button inside the unit to enter )

Menu P 0 chk

Sub Menu

Set H

Set l

beep

None

Ok

ng

P 1 com Mode

- 15 -

Description Set high limits for check weighing Set low limits for check weighing No beep for check weighing Beep, when check weighing between the limits Beep, when check weighing out of the limits This option is used to set accumulation and RS-232 communication Options: Cont : data send continues St 1 : Send data one time, when stable. St c : Send data continuously, when stable P r1 : Send data one time, when press print
Key (in printer mode) Pr 2 : Send data to print and accumulation,
When press .key Auto : Auto accumulate and auto print mode.
When weight stable and return to zero. Ask : Ask mode,
Command R: read data Command T: Tare Command Z: Zero Wirel: Optional Wireless mode (communication
through wireless) KIT 1: Optional Wireless Mode

TBWS Washdown Bench Scales Technical Manual

P 2 mod P3 oth

Baud Pr Ptype SinGLE
duAL 1
duAL 2 Lock anm

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: Lp50: Set the scale printer LP-50 EP50: Set the scale printer EP-50 To select single range operation

Count To check internal counts

Deci

To set decimal points

Div

To set increment

Cap

Set Capacity

Cal

Calibration

gra

Gravity

To select dual range - mode 1 Note: Once active second interval (div 2), Then second interval will work until display return to zero
Count To check internal counts

Deci Div
Cap
Cal

To set decimal points

Di v 1

To select first division

Di v 2

To select second division

Cap 1

To select first capacity

Cap 2

To select second capacity

Calibration

gra

Gravity

To select dual interval - mode 2

Note: First interval will active in CAP 1

Second interval will active in CAP 2

Count To check internal counts

Deci

To set decimal points

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

Calibration

gra

Gravity

To set keypad lock

Options: on / off

To set animal mode.

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P4 S T P5 CLR P6

TBWS Washdown Bench Scales Technical Manual

ST ON ST OFF CLRCAL CLROPT g Oz

Options: on / off Mutli Tare Function On Mutli Tare Function Off Clear the calibration record Clear the parameter modification record Weighing units select to turn on / off

7. CALIBRATION

To set calibration, turn on the scale.

 Press

key during the self-checking.

 Display will be show pn

 Press

,

and

to enter, display will be show po chk

 Press

until display will be show p 2 mod.



Open the display by unscrewing and locate K3 on mainboard. Upon

locating, press the button to enter calibration mode.

 Press 2
 Press
 Press

key to confirm and press
key to confirm and press key to confirm

to select sinGLE /dual 1 /dual to select cal

Calibration Cal

 Press

key to enter calibration, display will be show unld

 Remove all the weight from the platform.

 When indicator get stable, press

key to confirm.

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TBWS Washdown Bench Scales Technical Manual

 Display will show the last calibration weight. If want to change the

calibration weight value, press

and

keys to change the active

digits and press

key to increment the value.

 When the calibration value is correct, press
 Display will be show load.
 Place the calibration weight on the platform.

key to confirm.

 When indicator becomes stable, press

key to confirm.

 Display will come to normal weighing mode.

8. RS-232 OUTPUT

The TBWS Series of scales can be ordered with a standard RS-232 output.

8.1. Specifications:

RS-232 output of weighing data

Code

: ASCII

Data bits : 8 data bits

Parity

: No Parity

Baud rate : 600bps to 9600bps selectable

8.2. RS-232 (9pin D type connector)

Pin  Pin  Pin 

RXD TXD GND

9pin D Connecter: Indicator Pin 2:
Pin 3:
Pin 5:

Input Output


Receiving data Transmission data
Signal ground

Computer Pin 3
Pin 2
Pin 5

Check Weighing Output

Pin 1: VB Pin 4: Vcc 5v (Output) Pin 5: Com (Ground) Pin 6: Ok (Output)

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TBWS Washdown Bench Scales Technical Manual

Pin 7: Low (Output) Pin 8: Hi (Output) Pin 9: Beep (Output)

8. 3. Continuously output protocol
Weighing mode

-HEADER1--


- HEADER2-

-/
--- WEIGHT DATA --

k g CR LF
-WEIGHT UNIT- TERMINATOR

Counting mode

P C S

- QTY -

p c s CR LF
-QTY UNIT-

HEADER1: ST=STABLE US=UNSTABLE HEADER2: NT=NET GS=GROS

Print formats

Label Format

Receipt Format # 1

Receipt Format # 2

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TBWS Washdown Bench Scales Technical Manual
9. DRAWING
- 20 -

TBWS Washdown Bench Scales Technical Manual
TBWS Parts List-1
- 21 -

TBWS Washdown Bench Scales Technical Manual
TBWS Parts List-2
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TBWS Washdown Bench Scales Technical Manual
10. ERROR CODES

Error Message ----Err 1 Err 2 Err 4
Err 5 Err 6
Err 7 Err 8 Err 9

Description Maximum load exceeded Incorrect date Incorrect time Zero setting error
Key board error A/D value out of range
Percentage Error Calibration weight error Unstable Reading

Solution Unload or reduce weight
Enter the date by using format "yy;mm:dd"
Enter the time by using format "hh:mm:ss"
Zero setting range exceeded due to switching on.(4%max) Make sure platform empty.
Check the keys and connecter.
Make sure platform empty and check the pan is installed proper. Check the load cell connectors.
Please check input data, must be > 0.5d
Check the test weights for calibration or linear calibration
Check any air variation, vibration, RF noise and touching some where. Check the load cell and connecters.

Err 10
Err 11 Err 12 Err 13 Err 14 Err 15

Wireless communiation failure
Communication protocol error Accumulation error
Lack of unit weight
Lack of sample
Gravity error

Check wireless settings or change Com settings from the wireless Check communication settings
Max accumulation times 99 / 999 / weight 999999 Check unit weight entry data, must be >0.5d Check counting samples entry, must be >20d Check the gravity settings. Gravity range must be 0.9xx ~ 1.0xx

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TBWS Washdown Bench Scales Technical Manual

Err 16 Err 17

Paper error Tare out of range

Err 18 Err19 Err P
Err l

Pre-tare error Initialize zero error Printer error
Approval setting error

--ol---lo--

Over range Underload

Fai l h / fai l l / fai l
Ba lo / lo ba

Calibration Error Battery low

Check the printer paper Minus weight or overload. Remove the load and restart scale again. Check the pre-tare value Calibration the scale. Check the printer settings or connections Check the PCB jumper settings. Must be connect jumper pin to K1 (BW series)
Remove the load. Re calibrate Minus weight, check the platform and restart or calibrate. Check the test weights & Re calibrate Re charge battery, check the voltages.

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