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.
⚠️ General Precautions:
- 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.
1. SPECIFICATION
DIMENSIONS (inch/mm)
Description of scale dimensions: The document shows three views of the scale. The front view shows a width of 15.7 inches (400 mm) and a depth of 13.2 inches (336 mm). The side view shows a height of 15.7 inches (400 mm) to the base and 32.6 inches (826.3 mm) to the top of the pole. The top view shows a width of 10.4 inches (264 mm) and a depth of 15.7 inches (400 mm). A separate view shows a width of 18 inches (457 mm) and a height of 25.1 inches (638.9 mm) for a different configuration or part of the scale.
| Model | TBWS-100 | TBWS-200 | TBWS-500 |
|---|---|---|---|
| Display | 2.05inch / 52mm LCD | ||
| Housing | Stainless steel | ||
| Operating Temperature | 10°C - 40°C / 14°F - 104°F | ||
| Resolution | 1/5000 | ||
| Keypad | 7 Keys | ||
| Power | AC (110V/60Hz)/ Battery (6V/4Ah) | ||
| Calibration | Automatic External | ||
| Interface | RS-232 Output | ||
| Load cell drive Voltage | Max: 5V/150mA | ||
| Load Cells | Up to 4 load cell | ||
| ADC | Sigma Delta | ||
| ADC Update | ≤1/10 second | ||
| Stabilization Time | One seconds typical | ||
2. INTRODUCTION
- The TBWS series weighing indicator 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.
- Features a large LCD with white LED back light display.
3. INSTALLATION
3.1 Unpacking
When you receive the Indicator, inspect it to make sure that it is not damaged and that all 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:
- Indicator
- Manual
- Indicator holder (Optional)
- Load cell Output connector (Optional)
- RS-232 Output Connector (Optional)
3.2 Installation
- Place the Indicator on a table or use the indicator holder to connect with a stand.
- Connect the platform load cell cable to the indicator load cell connector. The load cell connector is located on the back side of the indicator.
- Connect the adaptor pin to the indicator adaptor jack. The adaptor jack is located on the back side of the indicator.
- Connect the adaptor to your AC power socket.
- Pluggable equipment must be installed near an easily accessible socket outlet with a protective ground/earth contact.
- Turn on the key. To turn off, press the key again.
- The display will show the scale capacity and will start self-checking.
- After self-checking, the display will enter normal weighing mode.
- A warm-up time of 15 minutes stabilizes the measured values after switching on.
- Calibrate with exact calibration weights; a minimum of 1/3 of the scale capacity should be used for calibration. For calibration details, see the parameter section.
Then you can start your operation.
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 up to 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 into the 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 the lower left side of the keyboard, there 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.
- If it is 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.
4. KEYS DESCRIPTION
Key Board
Description of keyboard layout: The image shows a scale's control panel with a display and several buttons. The display shows "VISIONTECH SHOP", capacity information, and status indicators like "CHARGE", "HI", "OK", "LOW". Below the display are buttons labeled "ESC", "UNIT", "SET", "PCS", "G/N", "ACC/TTL Print", "TARE", "ZERO", "CAL", "Current Weight", "Total Weight", and "ON/OFF".
| Keys | 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) |
Secondary functions of the keys
| Function | Keys |
|---|---|
| To confirm the selected menu | |
| 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. |
5. OPERATION
Initial Start-up: Warm-up time of 15 minutes stabilizes the measured values after switching on.
5.1. Basic Operation
- Power On/Off: Turn on the balance by pressing the key. The display is switched on and the test is started. To turn off the scale, press the key again.
- Zero: Environmental conditions can lead to the balance showing zero despite the platform not taking any strain. However, you can set the display of your balance to zero any time by pressing the key, ensuring that the weighing starts at zero.
- Tare:
- The weight of any container can be tared by pressing the button so that with subsequent weighing, the net weight of the object being weighed is always displayed.
- Load weight on the platform.
- Press the key. Zero is displayed, and tare is subtracted.
- Remove weight from 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 the key. Zero is displayed, tare weight is cleared.
- Select Unit and Sampling operation: Press the key; it can change the unit and sampling operation.
5.2. Check Weighing
It can set an upper or lower limit when weighing within 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 + keys together, the display will show "set h".
- Press the key to select "set h" or "set l".
- Press the key to confirm; the display will show "00000" and the last digit will blink.
- Enter the high limit value by using and keys to change the active digits and press the key to increment the value.
- Press the key to confirm; the display will show "set l".
- Enter the high limit value by using and keys to change the active digits and press the key to increment the value.
- Press the key to confirm.
- To escape from the settings, press the + key.
5.2.2. Set Check Weighing
- Press + and + keys together, the display will show "set h".
- Press the key to select display beep.
- Press the key to confirm; the display will be shown "none", "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 be shown and a beeper will sound.
5.3. Accumulation
The scale can be set to accumulate manually by pressing the key. For settings, see the parameter p 1 Com » mode » pr 2. Before operation, the scale should be stable and return to zero; accumulation is available only when the weight is more than 20d.
Accumulation Operation
- Place the load on the platform.
- Press the key when "STABLE" indication is displayed.
- The display will show "acc 1" then the total saved value. These displays will be shown only for three seconds.
- Remove the weight from the pan.
- When the display shows zero and is stable, then place the second weight.
- This can continue until the memory gets fully or reaches 99 items.
5.3.1 Memory Recall
To recall the memory, press the key when there is no load on the platform. The display will show "acc X" (X: Total number of accumulations) then the total saved value. These displays will be shown only for three seconds.
5.3.2. Memory Clear
To clear the memory, press the and keys together. The 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.
Automatic Accumulation Operation
- Place the load on the platform.
- When the display shows "STABLE" indication, the display will show "acc 1" then the total saved value. These displays will only be shown for three seconds.
- Remove the weight from the platform.
- When the display shows zero and is stable, then place the second weight.
- It can continue until the memory gets fully or 99 items.
5.4. Parts Counting
To enter parts counting, press the + key and select until the display shows "p 10".
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 the option depending on how many pieces/items are on the scale.
- Press the key to confirm; the display will show "----" then the quantity.
- Then add goods on the platform; the display will update the parts quantity automatically.
Press the + key back to the weighing mode.
5.5. Animal Weighing
The TBWS can be used for weighing vibrating loads. This function can be used for animal weighing. For settings, see the parameter p 3 oth » anm.
Bring the load onto the platform. When the load stabilizes for a few seconds, the reading will be locked for a few seconds. It can add or remove loads and also update the weighing locked values.
To enter or exit animal weighing mode, press the key until the HOLD indicator is displayed or not.
When in animal weighing mode, the HOLD indicator will be displayed.
5.6. Keyboard Lock
It can set the keyboard lock. For settings, see the parameter p 3 oth » lock.
When the keys are not used within 10 minutes, they will lock automatically. After entering the lock function, pressing any key will cause the display to show "k-lok". Then it will return to the normal display.
To unlock and use the keys, press and hold the + + and keys for three seconds. The display will show "u lck" then return to normal display.
5.7. Set auto power off
It can set the auto power off function for the scale. When the scale is not in use, it will turn off after the set time.
- Hold the key for three seconds; the display will show "setbl".
- Press the key to change "Set of" and press the key to confirm.
- Press the key to change the options.
| Set of | |
|---|---|
| off | To set auto off function turn off, for scale always on. |
| Of 5 | Set to turn off five minutes later. |
| Of 15 | Set to turn off fifteen minutes later. |
- After selecting the auto off option, press the key to confirm and press the + key to escape from the settings.
5.8. Set Back Light
It can set the back light when the scale is in use.
- Hold the key for three seconds; the display will show "setbl".
- Press the key to confirm.
| setbl | ||
|---|---|---|
| au | To set auto option. When start to use, back light will be on, and when stop the operation, back light will also turn off. | |
| on | To set always on. After turn on the power, back light will also be on. | |
| off | To set back light turn off. No back light in the operations. |
- After selecting the back light option, press the key to confirm and press the + key to escape from the settings.
6. PARAMETERS
To set parameters, turn on the scale.
- Press the + key during the self-checking. The display will show "pn".
- Press , + , and to enter; the display will show "po chk".
- (To access parameters P2 mod; P4 ST; P5CLR, the jumper K2 needs to be shorted; if K2 is not shorted, press K3 button inside the unit to enter).
| Menu | Sub Menu | Description | |
|---|---|---|---|
| P 0 chk | Set H | Set high limits for check weighing | |
| Set I | Set low limits for check weighing | ||
| beep | None | No beep for check weighing | |
| Ok | Beep, when check weighing between the limits | ||
| ng | Beep, when check weighing out of the limits | ||
| P 1 com | Mode | 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 | |||
| Pr1: Send data one time, when press print Key (in printer mode) | |||
| Pr 2: Send data to print and accumulation, when press .key | |||
| Auto mode. | Auto accumulate and auto print | ||
| zero. | 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 | ||
| P 2 mod | Baud | To set the baud rate. Options: 600 / 1200 / 2400 / 4800 / 9600 | |
| Pr | To set the parity. Options: 7 e1 / 7 o1 / 8 n1 | ||
| Ptype | To set printer model. Options: Lp50: Set the scale printer LP-50, EP50: Set the scale printer EP-50 | ||
| SinGLE | 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 | |||
| duAL 1 | 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: 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 | |||
| duAL 2 | 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 | |||
| P3 oth | Lock | To set keypad lock Options: on / off | |
| anm | To set animal mode. | ||
| P4 S T | Options: on / off | ||
| P5 CLR | ST ON ST OFF CLRCAL CLROPT | Mutli Tare Function On Mutli Tare Function Off Clear the calibration record Clear the parameter modification record | |
| P6 Unt | g Oz | Weighing units select to turn on / off |
7. CALIBRATION
To set calibration, turn on the scale.
- Press the + key during the self-checking. The display will show "pn".
- Press , + , and to enter; the display will show "po chk".
- Press until the display will show "p 2 mod".
- Open the display by unscrewing and locate K3 on the mainboard. Upon locating, press the button to enter calibration mode.
- Press key to confirm and press , to select sinGLE /dual 1 /dual 2.
- Press key to confirm and press , to select cal.
- Press key to confirm.
Calibration Cal
- Press the key to enter calibration; the display will show "unld".
- Remove all the weight from the platform.
- When the indicator gets stable, press the key to confirm.
The display will show the last calibration weight. If you want to change the calibration weight value, press and keys to change the active digits and press the key to increment the value.
- When the calibration value is correct, press the key to confirm.
- The display will show "load".
- Place the calibration weight on the platform.
- When the indicator becomes stable, press the key to confirm.
- The 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 | Indicator | Input/Output | Computer | Receiving data | Transmission data |
|---|---|---|---|---|---|
| Pin 2 | RXD | Input | Pin 3 | Receiving data | |
| Pin 3 | TXD | Output | Pin 2 | Transmission data | |
| Pin 5 | GND | — | Pin 5 | Signal ground |
9pin D Connector: Indicator Pin 2: Computer Pin 3; Indicator Pin 3: Computer Pin 2; Indicator Pin 5: Computer Pin 5.
Check Weighing Output
Pin 1: VB
Pin 4: Vcc 5v (Output)
Pin 5: Com (Ground)
Pin 6: Ok (Output)
Pin 7: Low (Output)
Pin 8: Hi (Output)
Pin 9: Beep (Output)
8. 3. Continuously output protocol
Weighing mode
Description of weighing mode output format: The format includes HEADER1, HEADER2, WEIGHT DATA, WEIGHT UNIT, and TERMINATOR. HEADER1 indicates stability (ST=STABLE, US=UNSTABLE). HEADER2 indicates net or gross weight (NT=NET, GS=GROS).
Counting mode
Description of counting mode output format: The format includes HEADER1, HEADER2, QTY, QTY UNIT, and TERMINATOR. HEADER1 indicates stability (ST=STABLE, US=UNSTABLE). HEADER2 indicates net or gross weight (NT=NET, GS=GROS).
Print formats
Description of print formats: Three examples are shown: Label Format displaying "THANK YOU" and "Weight: 1.745lb"; Receipt Format #1 showing a list of weights with Gross, Tare, and Net values for each item, and a TOTAL and COUNT; Receipt Format #2 showing similar receipt details.
9. DRAWING
Description of drawing: This is an exploded view diagram of the TBWS Washdown Bench Scale, showing all its components with corresponding numbers from 1 to 51. The diagram illustrates the assembly of the scale, including the platform, housing, load cells, display unit, and various screws and brackets.
TBWS Parts List-1
| No. | Name | QTY | Material | Mark |
|---|---|---|---|---|
| 51 | cable gland | 1 | PA | |
| 50 | inner hexagon screw | 2 | SST | M5*10 |
| 49 | hexagon screw | 4 | SST | M6*35 |
| 48 | inner hexagon screw | 8 | SST | M6*30 |
| 47 | inner hexagon screw | 1 | SST | M10*20 |
| 46 | feet | 4 | rubber | M10 |
| 45 | lower load cell bracket | 1 | SST | |
| 44 | load cell | 1 | Aluminum | |
| 43 | gasket | 2 | SUS301 | |
| 42 | inner hexagon screw | 4 | SST | M6X20 |
| 41 | level bubble | 1 | 14.7MM | |
| 40 | pan support stand | 4 | PA | |
| 39 | pipe plug | 4 | PA | |
| 38 | upper load cell bracket | 1 | SUS304 | |
| 37 | rubber gasket | 6 | rubber | |
| 36 | SST pan | 1 | SST | |
| 35 | gasket | 4 | SST | M6 |
| 34 | spring gasket | 8 | spring steel | M6 |
| 33 | pole stand | 1 | SST | |
| 32 | inner hexagon screw | 5 | SST | M6*16 |
| 31 | inner hexagon screw | 2 | SST | M6*10 |
| 30 | M type pole | 1 | SST | |
| 29 | Support Bracket | 1 | Zinc Alloy | |
| 28 | bracket | 1 | SUS304 | |
| 27 | bracket screw | 2 | ABS | |
| 26 | big head screw | 4 | SST | M4X8 |
TBWS Parts List-2
| No. | Name | QTY | Material | Mark |
|---|---|---|---|---|
| 26 | big head screw | 4 | SST | M4X8 |
| 25 | connector | 3 | PA6 | black |
| 24 | adapter port assembly | 1 | rubber | |
| 23 | rubber gasket | 1 | rubber | |
| 22 | back cover | 1 | SUS304 | |
| 21 | Seal lead | 0.1 | Cu | |
| 20 | hexagon seal screws | 1 | SUS304 | M4X16 |
| 19 | hexagon seal screws | 1 | SUS304 | M4X10 |
| 18 | Seal wire | 0.1 | Cu | |
| 17 | battery | 1 | 6V/4An | |
| 16 | battery bar | 1 | SPCC | |
| 15 | switch cover | 7 | PE | |
| 14 | gasket cover | 7 | SUS304 | |
| 13 | rubber gasket | 7 | rubber | |
| 12 | "+"screw | 6 | M4X16 | |
| 11 | calibration switch board | 1 | ||
| 10 | "+"screw | 2 | M3*6 | |
| 9 | transformer | 1 | ||
| 8 | "+"screw | 2 | M4X10 | |
| 7 | waterproof rubber bar | 1 | EPDM60° | |
| 6 | self-tapping screws | 6 | M3X8 | |
| 5 | main PCBA | 1 | ||
| 4 | "+"screw | 6 | M3*6 | |
| 3 | display protection plate | 1 | PC | |
| 2 | front cover | 1 | SUS304 | |
| 1 | overlay | 1 | PC |
10. ERROR CODES
| Error Message | Description | Solution |
|---|---|---|
| Err 1 | Maximum load exceeded | Unload or reduce weight |
| Err 2 | Incorrect date | Enter the date by using format "yy;mm:dd" |
| Err 4 | Incorrect time | Enter the time by using format "hh:mm:ss" |
| Err 5 | Zero setting error | Zero setting range exceeded due to switching on.(4%max) Make sure platform empty. Check the keys and connecter. |
| Err 6 | A/D value out of range | Make sure platform empty and check the pan is installed proper. Check the load cell connectors. |
| Err 7 | Percentage Error | Please check input data, must be > 0.5d |
| Err 8 | Calibration weight error | Check the test weights for calibration or linear calibration |
| Err 9 | Unstable Reading | Check any air variation, vibration, RF noise and touching some where. Check the load cell and connecters. |
| Err 10 | Wireless communiation failure | Check wireless settings or change Com settings from the wireless |
| Err 11 | Communication protocol error | Check communication settings |
| Err 12 | Accumulation error | Max accumulation times 99 / 999 / weight 999999 |
| Err 13 | Lack of unit weight | Check unit weight entry data, must be >0.5d |
| Err 14 | Lack of sample | Check counting samples entry, must be >20d |
| Err 15 | Gravity error | Check the gravity settings. Gravity range must be 0.9xx ~ 1.0xx |
| Err 16 | Paper error | Check the printer paper |
| Err 17 | Tare out of range | Minus weight or overload. Remove the load and restart scale again. |
| Err 18 | Pre-tare error | Check the pre-tare value |
| Err19 | Initialize zero error | Calibration the scale. |
| Err P | Printer error | Check the printer settings or connections |
| Err I | Approval setting error | Check the PCB jumper settings. Must be connect jumper pin to K1 (BW series) |
| --ol-- | Over range | Remove the load. Re calibrate |
| --lo-- | Underload | Minus weight, check the platform and restart or calibrate. |
| Fai l h / fai 11/ fai I | Calibration Error | Check the test weights & Re calibrate |
| Ba lo / lo ba | Battery low | Re charge battery, check the voltages. |