T Scale TW20 Technical Manual
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T Scale TW20 Technical Manual

T Scale TW20 Technical Manual

Weighing indicator
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TW20_NS20_EW20
Weighing Indicator
A1.12
09/03/2022

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  • Page 1 TW20_NS20_EW20 Weighing Indicator A1.12 09/03/2022...

  • Page 2: Table Of Contents

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual CONTENTS 1. PRECAUTIONS---------------------------------------------------------------------------------------- - 1 - 2. PRODUCT DESCRIPTION------------------------------------------------------------------------- - 3 - 2.1 General--------------------------------------------------------------------------------------------- 3 - 2.2 Over View---------------------------------------------------------------------------------------- - 4 - 2.3 Interfaces----------------------------------------------------------------------------------------- - 7 - 3. INSTALLATION--------------------------------------------------------------------------------------- - 10 - 3.1 Unpacking-------------------------------------------------------------------------------------- - 10 - 3.2 Installation-------------------------------------------------------------------------------------- - 10 - 3.3 Load cell connections------------------------------------------------------------------------- 10 - 3.4 Power Connection---------------------------------------------------------------------------- - 10 -...
  • Page 3 TW20_NS20_EW20 Series Weighing Indicator Technical Manual 5.12.4 Limits setting for target percentage--------------------------------------------- 41 - 5.12.5 Tolerance Checking Mode------------------------------------------------------- - 42 - 5.13 Backlight Setting------------------------------------------------------------------------------ 42 - 5.14 Auto Power Off-------------------------------------------------------------------------------- 43 - 5.15 Animal Weighing---------------------------------------------------------------------------- - 44 - 5.16 Peak Hold------------------------------------------------------------------------------------- - 46 - 6.
  • Page 4 TW20_NS20_EW20 Series Weighing Indicator Technical Manual 12.1 Preventive Maintenance----------------------------------------------------------------- - 102 - 12.2 Cleaning housing-------------------------------------------------------------------------- - 102 - 12.3 Cleaning the printer head----------------------------------------------------------------- 102 - 12.4 The usage of receipt roll----------------------------------------------------------------- - 102 - 12.5 Update UI (SD card)---------------------------------------------------------------------- - 103 - 12.6 Update Firmware (TTC)------------------------------------------------------------------- 105 - 12.7 Update Firmware (USB)----------------------------------------------------------------- - 106 - 12.8 Hardware Test------------------------------------------------------------------------------- 108 -...

  • Page 5: Precautions

    1. 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. ...
  • Page 6 TW20_NS20_EW20 Series Weighing Indicator Technical Manual SAFTEY INSTRUCTION The weighing scale is a precision electronic instrument, handle it carefully. The device must only be operated by personnel trained in the operation of this equipment. The operating personnel must read and understand the safety instructions in these operating instructions.

  • Page 7: Product Description

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual 2. PRODUCT DESCRIPTION 2.1 General The TW20_NS20_EW20 Series weighing indicators series include full-fledged features, interfaces,they can be developed to meet the Industrial applications. Major Features  4.3” color display with graphic interface  Multi-user permission management ...

  • Page 8: Over View

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual 2.2 Over View TW20 1 Keyboard 2 Preset keys 3 Indicator Holder 4 4.3” LCD display 5 AC adapter jack 6 RS232 port 7 RJ45 LAN port 8 Load cell connector - 4 -...
  • Page 9 TW20_NS20_EW20 Series Weighing Indicator Technical Manual NS20 Keyboard Preset keys Indicator Holder 4.3” LCD display - 5 -...
  • Page 10 TW20_NS20_EW20 Series Weighing Indicator Technical Manual EW20 1. Keyboard 2. Preset keys 3. Indicator Holder 4. 4.3” LCD display 5. AC adapter jack 6. RS232 port 7. RJ45 LAN port 8. Load cell connector - 6 -...

  • Page 11: Interfaces

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual 2.3 Interfaces TW20 Interface Description For connecting computer / printer / alarm light/ RS-232 Remote display RS485 / RS-232 (option) For connecting computer / Second platform RJ45 Support 10M/100M Ethernet For USB disk/ scanner /data transfer,don’t use for USB2.0...
  • Page 12 TW20_NS20_EW20 Series Weighing Indicator Technical Manual EW20 Interface Description For connecting computer / printer/alarm light/ RS-232 Remote display RS485 / RS-232 (option) For connecting computer / Second platform RJ45 Support 10M/100M Ethernet For USB disk/ scanner /data transfer,don’t use for USB2.0 charging other device - 8 -...
  • Page 13 TW20_NS20_EW20 Series Weighing Indicator Technical Manual NS20 Interface Description For connecting computer / printer /alarm light/ Remote RS-232 display RJ45 Support 10M/100M Ethernet For USB disk/ scanner /data transfer,don’t use for USB2.0 charging other device Load cell For connecting load cell connector - 9 -...

  • Page 14: Installation

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual 3. INSTALLATION 3.1 Unpacking  Remove the scale from the carton.  Remove the protective covering. Store the packaging and to use if you need to transport the scale later.  Inspect the scale for damage. ...

  • Page 15: Rechargeable Battery

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual  Adaptor connects into your AC power socket. Plugable equipment must be installed near an easily accessible socket outlet with a protective ground/ earth contact. 3.5 Rechargeable battery Note: Please charge the battery before using the scale for the first time. ...

  • Page 16: Label Paper Roll Installation (Ew20)

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual 3.6 Label Paper Roll Installation (EW20) 1.Press the button. 2.Open the printer cover. 3.Load / unload Paper rolls . 4.Close Cover group, Press both side to close correctly. 5.Pull the paper outside of the printer cover. - 12 -...

  • Page 17: Receipt Paper Roll Installation (Ew20)

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual 3.7 Receipt Paper Roll Installation (EW20) 1.Press the button. 2.Open the printer cover. 3.Load / unload Paper rolls . 4.Close Cover group, Press both side to close correctly. 5.Pull the paper outside of the printer cover. - 13 -...

  • Page 18: Display&Keys Funtion

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual 4. DISPLAY&KEYS FUNTION 4.1 Key Board TW20 NS20 EW20 - 14 -...
  • Page 19 TW20_NS20_EW20 Series Weighing Indicator Technical Manual Icon Name Description  Press the key to turn the scale on On/OFF key  Long press to turn the scale off  Used to print weighing data in normal weighing Print key mode ...

  • Page 20: Indication Description

     To recall the pre-tare value (T1~T4 available  Long press to store pre-tare value for TW20 ) Keys in the parameter settings Used as confirm key ,to enter into the function and parameter settings Scroll up to enter different item page...
  • Page 21 TW20_NS20_EW20 Series Weighing Indicator Technical Manual Battery charging Indicates the battery is charging Bluetooth Indicates Bluetooth connection indicator* WIFI indicator* Indicates WIFI connection Ethernet indicator Indicates Ethernet network connection Local scale* Indicates weighing in the local scale Remote scale* Indicates weighing in the remote scale User name Indicates current operator account Net weight...

  • Page 22: Operation

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual 5. OPERATION 5.1 Power On/Off Press key to switch power-up, it will be heard “beep” sound ,the scale show company logo, and come to normal weighing mode. Hold key 1.5 seconds to switch off the scale. 5.2 Log in It allows multiple users to operate the same indicator When power is on ,it may be asked to input the account...

  • Page 23: Zero Setting

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual 5.3 Zero Setting Zero setting allows to do by pressing key, only it’s possible when the load receptor is not in motion. 5.4 Tare 5.4.1 Semi-automatic tare The indicator is provided with a semi-automatic subtractive tare. 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.

  • Page 24: Pre-Set Tare

    Direct pre-set tare： Hold T key （ ）2 seconds in normal Weighing mode,the digits in Tare window will be active. (T1~T4 available for TW20 ) Using numeric keys to input the tare value. Press key to confirm,the preset tare value appears.
  • Page 25 TW20_NS20_EW20 Series Weighing Indicator Technical Manual 5.4.3.2 Recall Pre-set Tare Recall indirect pre-tare 1 Select a Weight PLU configured with pre-tare value from Indirect PLU list . 2 Display will be show selected product name & number &pre-tare value . 3 Place the item on the pan and wait to get weight stable, display show net weight.

  • Page 26: Weighing Operation

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual 3 Place the item on the pan and wait to get weight stable,display show net weight. 4 Remove item from the pan ,the net window show negative value. 5 Press key to clear tare value. 5.5 Weighing Operation Switch on the scale,display show normal weighing mode.

  • Page 27: Weighing Units Conversion

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual 5.6 Weighing Units Conversion By pressing key in turn in normal weighing mode,it can convert the weighing units (kg/g/lb/oz/tj/hj),the relative units symbol will turn on in the display. To enable the weighing units, please see parameter 2.ADVANCED SETTINGS >1.DISPLAY UNIT Press key to enter setup menu.

  • Page 28: Plu Information Store And Recall

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual 5.7 PLU Information Store and Recall It allows for searching Product names by pressing Direct PLU M1~M8 or by using key. 5.7.1 Store Indirect PLU information please refer to setup menu > 2.PRODUCT INFO > 2.ADD/EDIT PRODUCT Operation: Press key to enter setup menu.

  • Page 29: Recall Indirect Plu

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual 5.7.2 Recall indirect PLU Press key to recall the indirect PLU information in normal weighing mode. It will be asked to input PLU number Using numeric number keys on the keypad to input PLU number to select products. Press key to confirm.

  • Page 30: Recall Direct Plu

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual 5.7.4 Recall direct PLU In normal weighing mode,press M key (selected from ）to recall direct PLU. 5.8 Parts Counting Weigh a sample to calculate the unit weight to determine the average weight of items to count, put a known number of pieces on the scale .
  • Page 31 TW20_NS20_EW20 Series Weighing Indicator Technical Manual  If necessary press key to change the parts quantity (10/20/50/100).  Press key to confirm, display show dotted line.  The average piece weight of item will be calculated and then the number of items displayed in count window.
  • Page 32 TW20_NS20_EW20 Series Weighing Indicator Technical Manual 5.8.1.2 Enter Counting Number  Make sure platter empty and display return to zero.  Put a container on platter and press key if necessary.  Place a unknown amount of pieces on the scale. ...

  • Page 33: To Input The Known Average Piece Weight Of Item

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual  Add the rest of items on the platter, weight and number of items will be increased.  Remove the items,the average piece weight will remain stored in memory for the next counting of similar pieces. ...

  • Page 34: Automatic Part Weight Updates

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual  Input the average piece weight of item with numeric keys.  Press key to confirm.  Add new items on the platter, weight and number of items will be displayed.  To execute a new reference operation repeat the operations as described . ...

  • Page 35: Percentage Weighing

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual 5.9 Percentage Weighing The scale can set a sample weight to be shown as 100%. Then any other weights place on the scale, it will be displayed as a percentage of the original sample. ...

  • Page 36: Accumulation

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual Press and hold key to back to normal weighing mode.   The weighing may be amended on the basis of greater numbers of samples, improves the accuracy of percentage large quantities. Note:If the weight is less than 20d,it will pop up a prompt “sample low” 5.10 Accumulation The scale can be set to accumulate manually by pressing key.
  • Page 37 TW20_NS20_EW20 Series Weighing Indicator Technical Manual 6 Press key, when STABLE indicator on. 7 It can continue until the memory gets fully . 5.10.2 Auto Load Accumulation To enable the auto-load accumulation ,please refer to parameters 2. ADVANCED SETTINGS >7.ACCUMULATION MODE > AUTO-LOAD 1 Place the load on the platform,the weight display will be show the net weight.
  • Page 38 TW20_NS20_EW20 Series Weighing Indicator Technical Manual 3 Remove the item and the scale will return to zero. 4 Display shows the count and total weight, a beep sound will be heard. 5 When display get zero and stable then place the second weight. 6 It can continue until the memory gets fully .
  • Page 39 TW20_NS20_EW20 Series Weighing Indicator Technical Manual 5.10.5 Accumulation Clear 1 In the normal weighing mode,press key to recall accumulation records. 2 Press and hold key to clear the accumulation memory. 5.10.6 Accumulation and Printing If connected with printer, the data will be print out in accumulation mode, see parameters 2.

  • Page 40: Printing

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual 1 Select a PLU from the direct PLU list or Indirect PLU list. 2 The same product could be accumulated in weighing mode 、counting mode and percentage mode. 3 When switching between products, the total is automatically cleared. 4 Press key to view the records,only show the same product accumulation records in different operation mode.

  • Page 41: Receipt Printing

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual The printer option should be selected as per connected printer model  Load the weight on the platform.  Press key to print out the data. 5.11.2 Receipt Printing It allows for printing the weighing records to external receipt printer.To enable the function, please refer to setup menu 2.ADVANCED SETTINGS...

  • Page 42: Beep Mode

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual 5.12.1 Beep Mode The beep sound depends on the settings made in menu block Options: 1.OFF Beep sound turned off Beep sound will ring out when load is beyond 2.BEYOND LIMITS tolerance range Beep sound will ring out when load is within tolerance 6.Beep 3.WITHIN LIMITS range...

  • Page 43: Limits Setting For Target Weight

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual 5.12.2 Limits setting for target weight Press and hold key to enter limits setting in Normal weighing mode. The lower limit value and LOW words in the display will be active in turn. Press key to confirm when entered the lower limits with numeric keys.

  • Page 44: Limits Setting For Target Quantity

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual 5.12.3 Limits setting for target quantity To enter counting mode by sampling or inputting the known unit weight of item. Press and hold key to enter limits setting. The lower limit value and LOW words in the display will be active in turn.

  • Page 45: Limits Setting For Target Percentage

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual 5.12.4 Limits setting for target percentage Press key to enter percentage weighing in normal weighing mode. Press key to enter limits setting. The lower limit value and LOW words in the display will be active in turn. Press key to confirm when entered the lower limits with numeric keys.

  • Page 46: Tolerance Checking Mode

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual 5.12.5 Tolerance Checking Mode Target weight checking In normal weighing mode,press to enter check weighing mode Target quantity checking In counting mode,press key to enter check counting mode Target percentage checking In percentage mode,press key to enter check percentage mode 5.13 Backlight Setting...

  • Page 47: Auto Power Off

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual Press key until to select the backlight. Press key to enter the menu. Press key to change the setting. ▪ LOW--Backlight turn to be low light ▪ NORMAL--Backlight turn to be medium light ▪ BRIGHT--Backlight turn to be high light Press key to confirm.

  • Page 48: Animal Weighing

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual Press key until to select the power&sleep. Press key to enter the menu. Press key to change the setting. ▪ OFF--Auto power-off is off. ▪ 0.5 HOUR--Auto power-off at 30 minutes. ▪ 5 HOURS--Auto power-off at 5 hours. ▪...
  • Page 49 TW20_NS20_EW20 Series Weighing Indicator Technical Manual 3 Press key to enter settings. 4 Press key until select 4. WEIGHING MODE sub menu. 5 Press key to enter settings. 6 Press key to change the settings until display show ANIMAL WEIGH. 7 Once selected the animal weighing mode,it could enter 5.

  • Page 50: Peak Hold

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual 11 Place item to be weighed on the scale platform. Once the stable indicator appears with a beep sound, the final weight will be shown on the display. The weight will be update when the load weight exceed the floating range and jump range.
  • Page 51 TW20_NS20_EW20 Series Weighing Indicator Technical Manual 8 Press key two times to exit the setup menu and back to peak hold weighing mode. 9 The Peak indicator will appear in the upper side of the weight display. 10 Load the weight on the platform,the maximum reading will be hold. - 47 -...

  • Page 52: Database Programmming

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual 6. DATABASE PROGRAMMMING 6.1 Search Product Press key to enter the main menu. Press numeric key to enter product settings. Press key to confirm . The product list will be displayed. Using numeric keys to input number,for example: 1 . Press key to confirm,PLU1 information will be displayed.

  • Page 53: Edit Product

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual 6.2 Edit Product Apollo series can store up to 999 PLU, including 6 direct PLU for NS20 &EW20 model,8 direct PLU for TW20 model. Press key to enter the main menu. Press numeric key to enter product settings.

  • Page 54: Unit Weight

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual Edit Keys For up & down,enter to different item Arrow keys page Delete Key For clear entered value Return Key For returning to main page Save Key For saving information Item select key For entering corresponding item page Numeric key 0~9 Alphabet key For entering alphabet for product name...

  • Page 55: Delete Product

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual TRACE CODE Enter product trace code information,20 alphanumeric characters（Reserved Function） REMARK Enter product remark information,20 alphanumeric characters Enter number of label format for product ,it has 10 format for 10 PRINT FORMAT selecting If want to select format 1,input 0 by using numeric keys If want to select format 2,input 1 by using numeric keys If want to select format 3,input 2 by using numeric keys 6.3 Delete Product...

  • Page 56: Change Plu Number

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual Press key to delete the product selected, it will pop up a prompt “Do you want to delete it? ” press key to delete, press key to escape. 6.4 Change PLU Number Press key to enter the main menu. Press numeric key to enter product settings.
  • Page 57 TW20_NS20_EW20 Series Weighing Indicator Technical Manual Press key to confirm , the PLU 1 information displayed. Press key to enable change the PLU number, the number at the right upper corner of display will be active. Input the PLU number as you desired by using numeric keys and confirm by pressing key .

  • Page 58: Data Transfer

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual 7. DATA TRANSFER 7.1 Backup ▪ Create a folder with csv.data file in the USB disk ,the file name should be “scale data”. ▪ The folder consists of 3 files: device.csv/ product.csv/ record.csv. ▪ Insert USB disk to the USB port that is locating in the right side of indicator.
  • Page 59 TW20_NS20_EW20 Series Weighing Indicator Technical Manual Export device information from Scale to U disk 1.DEVICE INFO 2.PRINT FORMAT Export print format from Scale to U disk Back Up 3.REPORTS Export reports from Scale to U disk 4.PRODUCT INFO Export PLU information from Scale to U disk Note: It is recommended that clear the data in the U disk before insert the USB disk, the old data will be overwrite when export new data to the U disk.

  • Page 60: Device Info

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual 10 Data will be import from the USB disk in csv data file to scale. 1.DEVICE INFO Import device information from U disk to Scale RESTORE 2.PRINT FORMAT Import print format from U disk to Scale 1.PRODUCT INFO Import PLU information from U disk to Scale ITEM DESCRIPTION...

  • Page 61: Delete

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual Trace Code Enter product trace code information,20 alphanumeric characters (Reserved function) Remark Enter product remark information,20 alphanumeric characters Enter HI limit value including weighing unit Enter LOW limit value including weighing unit Pcs Weight Enter unit weight or standard weight 7.3 Delete Press...

  • Page 62: Report

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual 8. REPORT The reports database,including Daily Report/Weekly Report /Monthly Report. All of reports data can be exported to external USB disk in a csv.file . 8.1 Periodic report Press key to enter the main menu. Press key until to select 4.PRINT,REPORTS&...

  • Page 63: Daily Report

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual Press key to select ,press key to exit the menu. 1.DAILY REPORT Press key,the daily report appears on the display. Press key to exit and back to Setting menu. 2.WEEKLY REPORT Press key,the weekly report appears on the display.
  • Page 64 TW20_NS20_EW20 Series Weighing Indicator Technical Manual 8.2 Product Report Press key to enter the main menu. Press key until to select 4.PRINT,REPORTS& DATA，press key to enter； Press key to select 3. PRODUCT REPORT, press key to enter. The start date will be active,input the start date by using numeric keys, press key to confirm.

  • Page 65: Delete Report

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual The end date will be active,input the end date by using numeric keys, press key to confirm. The product report appears on the display. 8.3 Export Report For more information,please refer to section 7.1 BACK UP 8.4 Delete Report For more information,please refer to section 7.3 DELETE Note:Only Daily report can be printed out by pressing...

  • Page 66: Enter Into The Menu

    Escape from the parameter settings and return to the normal weighing mode 9.3 Active Parameter Note:If want to change the settings: 2.Advance settings; 6.Service Before enter the parameters,Press CAL switch to enable parameters to access. CAL switch is locating back side of the indicator TW20 - 62 -...
  • Page 67 TW20_NS20_EW20 Series Weighing Indicator Technical Manual EW20 NS20 - 63 -...

  • Page 68: Terminal Info

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual Setting has the following items for configuring Menu Sub Menu Description 1.COMPANY 2.DEPARTMENT Used to set device information 3.SCALE NUMBER 1.TERMINAL INFO 4.PHONE 5.ADDRESS 1.SET DATE Used to set date 2.SET TIME and time 3.SEPAR 2.DATE / TIME ATOR...
  • Page 69 TW20_NS20_EW20 Series Weighing Indicator Technical Manual PASSWORD 6.Operator NAME PASSWORD 7.Operator NAME PASSWORD 8.Operator NAME PASSWORD 9.Operator NAME PASSWORD Reset system 8.RESET TO DEFAULT setting to default 1. g 2. kg 3. lb To set weighing 4. oz 1.WEIGHING UNIT units on/off 5.
  • Page 70 TW20_NS20_EW20 Series Weighing Indicator Technical Manual Used to set multi 2.MULTI tare function on TARE Used to set multi tare function off NORMAL Used to set FAST different weighing SLOW 4.WEIGHING MODE mode ANIMAL WEIGH PEAK HOLD 1.FLOATI RANGE 5 SEC 10 SEC For animal weigh setting,it’s required...
  • Page 71 TW20_NS20_EW20 Series Weighing Indicator Technical Manual 2.ALLOW Used to set the accumulation PRODUC method for different products 3.PRINT Used to set EVERY whether to print RECORD when accumulation Used to select 4.MIN. Minimum division LOAD for printing To reset advanced 8.RESET TO DEFAULT settings to default 1.SEARCH...

  • Page 72: Number Of Copies

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual FORMAT 3 2.TOTAL FORMAT 1 LABEL FORMAT 3.TOTAL FORMAT 1 RECEIPT FORMAT 3.TOTAL To select total print LABEL PRINT type TYPE RECEIPT To select print 4.NUMBER OF times for label COPIES format 1.DAILY To view different 2.PERIODIC REPORT periodic reports 2.WEEKLY...
  • Page 73 TW20_NS20_EW20 Series Weighing Indicator Technical Manual ASK Command R Read data T Tare Z Zero (Only for RS232 mode) OFF Set local or remote 1.LOC sent in the AL/RE communication MOTE protocol to be turned on or off. Set date/time sent in the 2.DAT communication...

  • Page 74: External Printer

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual OFF Set operator sent 9.OPE in the RATO communication protocol to be turned on or off. 1.NONE To select the 2.OS2130D 4.EXTERNAL external printer 3.TPUP PRINTER (Only for RS232 4.RP80VI mode) 5.AP58S 6.ZEBRA To set built-in 5.BUILT-IN PRINTER printer on/off ( only for EW20)

  • Page 75: Calibration

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual 2.NAME To show Bluetooth name Reset 5.interface configuration to 5.RESET TO DEFAULT default 1.BOOT 1.02 2.WEIGHI V1.10 Used for checking version 1.VERSION information INFO 3.APPLIC A1.12 ATION 4.SCREE N/KEYBO K1.01 1.SERIAL NUMBER 2.SYSTEM 2.TECH PASSWORD To set password for technician SERVICE 3.GRAVITY...

  • Page 76: Update Software

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual 0.000 0.0000 4.DIVI To set division SION 1.NOR To calibrate the scale in normal calibration CALIB 2.LINE To calibrate the scale in 2.CALIBR linear calibration ATION CALIB 3.ZER To calibrate the scale in zero calibration CALIB 3.LASTCALIBRATI To view the last...

  • Page 77: Reset All

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual To update application 2.UPDATE FIRMWARE (USB) software via U disk 1.KEYBOARD TEST 2.DISPLAY TEST 3.RS232 TEST 5.HARDWAR For more E TEST information,please see 4.ETHERNET TEST section 5.USB TEST 6.LOAD CELL TEST 7.BATTERY TEST Used to reset to factory setting,scale will be 6.RESET ALL restart and come to...

  • Page 78: Normal Calibration

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual 10. CALIBRATION It allows selecting Normal calibration、Linear calibration、Zero calibration to calibrate the scale. 10.1 Normal Calibration ▪ Press key to enter setup menu. ▪ Using numeric keys 、 、 to enter calibration. 、 6. Service> 3.calibration parameters > 4.SCALE1 >...

  • Page 79: Linear Calibration

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual 4 Press key to confirm. 5 Place the test weight on the platter. Better to use minimum 1/3 of the scale capacity) 6 Press key to confirm. The display will be show “Please empty the scale”. 7 Remove the test weight from the scale.
  • Page 80 TW20_NS20_EW20 Series Weighing Indicator Technical Manual Steps Remark 1 Select calibration points as per resolution of scale. 2 Please empty the scale,press to confirm when stable indicator on. 3 Enter the first calibration weight by using numeric keys . 4 Press key to confirm.
  • Page 81 TW20_NS20_EW20 Series Weighing Indicator Technical Manual 7 Display show “please empty the scale”. 8 Remove the weight from scale. 9 It will pop up the full capacity calibration weight automatically. 10 Press key to confirm. 11 Load the full capacity weight on the platter.

  • Page 82: Zero Calibration

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual Linear Calibration Weight Resolutio Calibratio LOAD LOAD LOAD LOAD LOAD LOAD n points 3 points Unload Full 1/10,000 ~1/30,000 4 points Unload Full 5 points Unload Full 1/30,000~ 1/100,000 6 points Unload Full >1/100,00 7 points Unload Full...
  • Page 83 TW20_NS20_EW20 Series Weighing Indicator Technical Manual 2 Press key to confirm 3 The display will be show “ Zero capture success” (Calibration Completed and back to the normal weighing mode) - 79 -...

  • Page 84: Communication

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual 11. COMMUNICATION 11.1 General Device has the RJ45, USB, RS232, Wi-Fi interface options for meeting different communication needs. ① ② ③ Second platform module WIFI module Bluetooth module TW20 ④ ⑤ - 80 -...
  • Page 85 TW20_NS20_EW20 Series Weighing Indicator Technical Manual EW20 ④ ⑤ RS232 & Alarm light connector RS485 & Second platform connector (option) Note: 1.The RS485 & Second platform function only can choose one from the two 2. RS485 & Second platform function are not available for NS20 model Type Connector Speed...

  • Page 86: Rs232 Wire And Alarm Light Wire Connection

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual 11.2 RS232 wire and Alarm Light wire connection 11.2.1 Specifications Please refer to parameters 5.INTERFACE > 1.SERIAL > 1.TYPE >RS232 11.2.2 RS-232 (DB9 type connector) Pin 2 Input Receiving data Pin 3 Output Transmission data Pin 5 ―...

  • Page 87: Rs485 Wire Connection

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual Negative symbol or spacer Data Net value,9 digits including decimal points and weighing units UW=UNIT WEIGHT CR/LF Carriage return / line feed Data Unit weight value，12 digits including decimal points and weighing units QTY=QUANTITY Data Quantity value，11 digits including decimal points and weighing units...

  • Page 88: Continues Weight Output

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual 11.3.3 Continues weight output The content to be send can be enabled or disabled with continuous output. the detail protocol as follows local ; Dat , Tim ; PL Data ; U Data Result User Content Description local...

  • Page 89: Print Format ( Label & Receipt )

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual HEADER1: ST=STABLE ， US=UNSTABLE HEADER2: NT=NET,GS=GROSS WEIGHING UNIT: kg 11.4 Print Format ( Label & Receipt ) It allows user to customized the label and receipt formats through TTC back office software, the formats can be designed up to 10 formats. Format 1(Weight)：...
  • Page 90 TW20_NS20_EW20 Series Weighing Indicator Technical Manual Total label format： Total receipt format： 2020/04/14 15:32 OPERATOR ---------------------------------------- 2020/04/14 15：32 Counts Result Total Items ---------------------------------------- T.Gross 1.55 kg 0.310 kg 0.000kg OK T. Tare 0.00 kg 2. 0.310 kg 0.000kg OVER T.Net 1.55 kg T.Over 3.

  • Page 91: Ethernet Connection

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual 11.5 Ethernet Connection 11.5.1. Ethernet straight wire connection Direct Connection Indirect Connection The setting required for Ethernet network interface with PC application software. Settings for Ethernet option Remarks IP Address 192.168.010.100 Local IP address - Should be in 4 groups and each groups should have 3 digits.
  • Page 92 TW20_NS20_EW20 Series Weighing Indicator Technical Manual Operation: Make connection the scale with computer or router by using RJ45 Ethernet cable. Press key to enter the main menu. Press key to select 5.INTERFACE，Press Key to enter. Press key to select 2.ETHERNET. Input the IP address .

  • Page 93: Bluetooth Communication (Optional)

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual 11.6 Bluetooth Communication (optional) 11.6.1 Bluetooth Installation Remove the screws from the indicator housing Open the housing Insert the Bluetooth module into the main board 11.6.2 Bluetooth Setting Press key to enter the main menu. key to select 5.INTERFACE，Press Press Key to enter.
  • Page 94 TW20_NS20_EW20 Series Weighing Indicator Technical Manual Press ON/OFF key to turn off the scale and press the key to restart the scale again, enter the Bluetooth setting ,the module name will be show Press key 3 times to back to set up menu. Note: The following steps used for testing communication (only BLE Utility available for testing ) ▪...
  • Page 95 TW20_NS20_EW20 Series Weighing Indicator Technical Manual ① ② ③ ④ - 91 -...

  • Page 96: Analogue Moduleļ¼ˆOptional

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual 11.7 Analogue Module（Optional） The analogue module includes two types,they are 0~10V and 4mA~20mA 11.7.1 Installing the module 1 Remove the four screws at the rear side of the indicator and open the indicator housing 2 Attach 2 screws with nuts and spacers to the analogue module board 3 Connect analogue module board with...

  • Page 97: Connecting The Module

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual 11.7.2 Connecting the module The following steps used for testing the module (0~10V) connection. Connect the meter to the analogue module Unload weighing plate, The reading value should show ~ 0 V If shows incorrect value, it allows to readjust VR 1 to correct by using screw driver Load weighing plate with maximum load The reading value should show ~ 10 V;...
  • Page 98 TW20_NS20_EW20 Series Weighing Indicator Technical Manual Unload weighing plate, The reading value should show ~ 4 mA If shows incorrect value, it allows to readjust VR 1 to correct by using screw driver Load weighing plate with maximum load The reading value should show ~ 20mA ; If shows incorrect value, it allows to readjust VR 1 to correct by using screw driver...

  • Page 99: Wifi Communication (Optional)

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual 11.8 WIFI Communication (optional) ① ② ③ Second platform module WIFI module Bluetooth module 11.8.1 WIFI module Installation Remove the screws from the indicator housing Open the housing Insert the WIFI module (②) into the main board 11.8.2 WIFI Setting Press key to enter the main menu.
  • Page 100 TW20_NS20_EW20 Series Weighing Indicator Technical Manual Press key to select 5.INTERFACE，Press Key to enter. Press key to select 3.WIFI. Press Key to enter WIFI setting. Press key to select ON option Press key to select 2.PASSWORD Use the number keys to enter the network password that needs to be connected (Press key to select the specific characters in turn)
  • Page 101 TW20_NS20_EW20 Series Weighing Indicator Technical Manual The trying indicator will be show on the left top corner of display Once connected , The connect indicator will be show on the left top corner of display 10 Press key to back to WIFI setting,the DHCP IP address will be show on the display 11 The WIFI setting is complete,now you can run TTC back office software for next operation.

  • Page 102: Second Platform (Optional)

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual 11.9 Second Platform (optional) ① ② ③ Second platform module WIFI module Bluetooth module 11.9.1 Second platform connection Second platform module 9pin Connector - 98 -...
  • Page 103 TW20_NS20_EW20 Series Weighing Indicator Technical Manual Connect the dual load cell cables to the terminal as shown below. 9 Pin Connection 7 Pin Connection Excitation + Signal - Sense + Signal + Shield Shield Sense - Excitation - Excitation - Sense - Sense + Signal -...
  • Page 104 TW20_NS20_EW20 Series Weighing Indicator Technical Manual Press key to enter； Press key to select 5.SCALE 2,Press key to enter； Press key to turn on the second platform Press key to select 2.SCALE RANGE SETTING for second platform and confirmed by pressing Press key to select 3.CALIBRATION ,once complete,scale will be restart and come to normal weighing mode, the second platform indicator will be on...
  • Page 105 TW20_NS20_EW20 Series Weighing Indicator Technical Manual Press and hold key to change the local scale to remote scale. local scale remote scale - 101 -...

  • Page 106: Maintenance

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual 12.MAINTENANCE 12.1 Preventive Maintenance 1 Switch off and unplug the device from the mains before cleaning. 2 Do not open the device during cleaning. 3 Make sure that no fluids get inside the device. 4 Do not use organic acid, alkaline solutions, scouring powders or plastic dissolving cleaning agents for cleaning.

  • Page 107: Update Ui (Sd Card)

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual 12.5 Update UI (SD card) If the display is frozen or it can not be updated via U disk, it’s required to update UI by SD card,before updating the UI, you should prepare a 4G TF card and SD card reader. Unzip DWIN-SET compress file Add DWIN-SET folder to the SD card...
  • Page 108 TW20_NS20_EW20 Series Weighing Indicator Technical Manual Insert the SD card to display SD card slot TW20_EW20 NS20 Press ON/OFF key to turn on the indicator Scale will be show the UI updating process 7 Once completed,the display will be show END ,and then come to normal weighing mode.

  • Page 109: Update Firmware (Ttc)

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual 12.6 Update Firmware (TTC) It allows for updating the application software with Ethernet network in the TTC back office software management. Press key to enter the main menu. key to select 5.INTERFACE，Press Press Key to enter; Press key to select 2.ETHERNET.
  • Page 110 TW20_NS20_EW20 Series Weighing Indicator Technical Manual Run on the TTC back office software Click [Device Management],enter the IP address Click [Soft Update],select the new application software to be updated,and click [Update] The scale and TTC will be show the updating process. 12.7 Update Firmware (USB) It allows for updating the application software to the scale via U disk.

  • Page 111: Update Firmware (Usb)

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual Press key to enter the main menu. Press key to select 6.SERVICE，Press key to enter； Press key to select 4.UPDATE SOFTWARE Press key to enter； Press key to select 2.UPDATE FIRMWARE(USB ) Press key to enter,display will be show the updating process. - 107 -...

  • Page 112: Hardware Test

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual 12.8 Hardware Test Press key to enter the main menu. Press key to select 6.SERVICE, Press Key to enter； Press key to select 5.HARDWARE TEST, Press Key to enter； Press key to select the option to be test. 12.8.1 Keyboard Test Press the key to be test one by one as per the prompt displayed,once completed the keyboard testing ,display shows successful.
  • Page 113 TW20_NS20_EW20 Series Weighing Indicator Technical Manual 12.8.3 RS232 Test Interchange the pin 2 and pin 3 wire connection of RS232 port,Press Key to confirm , a prompt “ write data successful” appears. 12.8.4 ETHERNET Test Connect one end of the network cable to the computer and insert the other end into the network interface at rear side of the scale.
  • Page 114 TW20_NS20_EW20 Series Weighing Indicator Technical Manual 12.8.5 USB Test Insert the U disk into the USB port, Press Key to confirm,a prompt appears as follows. 12.8.6 Load cell Test Connect the indicator with load cell ,if connect successfully, Press Key to confirm, the display shows the internal counts.

  • Page 115: Error Codes

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual 13. ERROR CODES Error Message Description Solution ERROR 4 Zero setting error Zero setting range exceeded due to switching on.(4%max) Make sure platform empty. ERROR 5 Key board error Check the keys and connector. ERROR 6 A/D value out of range Make sure platform empty and check the...

  • Page 116: Trobule Shotting

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual 14.TROBULE SHOTTING Problem Possible cause Common solutions Mains power is turned off Check power switch is turned on, Power supply is not plugged in and power LED is working. Cannot turn Power supply faulty Verify the voltage going to the scale on power Internal battery is not charged...
  • Page 117 TW20_NS20_EW20 Series Weighing Indicator Technical Manual Verify the batteries are rechargeable Disconnect types and charging voltage getting AC adapter Battery low proper. Plug AC adapter to charge will turn off battery. power Replace battery - 113 -...

  • Page 118: Exploder Drawing

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual 15. EXPLODER DRAWING TW20 - 114 -...
  • Page 119 TW20_NS20_EW20 Series Weighing Indicator Technical Manual Part Lists Item Spec. Overlay Display acrylic board Top cover 4.3”Color screen Display fixing plate Mainboard “+”screw 8; M3*8 USB board Bottom cover USB Rubber cover “+”screw 5; M4*12 Ø4 Flat washer Seal bolt Seal wire Seal screw 1;M4*16...
  • Page 120 TW20_NS20_EW20 Series Weighing Indicator Technical Manual EW20 - 116 -...
  • Page 121 TW20_NS20_EW20 Series Weighing Indicator Technical Manual Part Lists Item Spec. Overlay Display acrylic board Top cover “+”screw 8; M3*6 4.3”Color screen Display fixing plate Mainboard “+”screw 10; ST3*8 Adapter jack Interface board assembly Lithium battery holder Lithium battery Printer Printer overlay Fixing base Nameplate USB board...
  • Page 122 TW20_NS20_EW20 Series Weighing Indicator Technical Manual NS20 - 118 -...
  • Page 123 TW20_NS20_EW20 Series Weighing Indicator Technical Manual Part Lists No. Item Spec. overlay Display acrylic board Top cover “+” screw M3*6; 16 4.3”Color display Display fixed frame Main board Seal ring Battery fixed bracket Bottom cover Hexagon screw M4*10; 2 waterproof cable gland M16;...

  • Page 124: Parts Replacement

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual 16. PARTS REPLACEMENT 16.1 Battery Replacement TW20 Place the indicator display down on horizontal desktop (1). Open the battery cover along the arrow direction (2). Take out the foam next to the battery (3).
  • Page 125 TW20_NS20_EW20 Series Weighing Indicator Technical Manual EW20 Place the indicator display down on horizontal desktop (1). Remove the four screws to open the rear housing. Take the rear housing down from the front housing . Disconnect the battery cable from the main board connector(2). Remove the two screws to open the battery cover (3).
  • Page 126 TW20_NS20_EW20 Series Weighing Indicator Technical Manual NS20 Place the indicator display down on horizontal desktop . Remove the screws of the indicator and open the rear cover. Disconnect the lithium battery connector. (1) Open the battery cover.(2) Replace the new lithium battery and connect the battery connector.(3) Close the battery cover.(4) - 122 -...
  • Page 127 TW20_NS20_EW20 Series Weighing Indicator Technical Manual 16.2 Main board Replacement Place the indicator display down on horizontal desktop . Remove the 6 screws to open the rear housing. Take the rear housing down from the front housing . Disconnect all cables from the main board Release 4 screws at the main board Put the rear housing back on the front housing, tighten it with 6 screws.
  • Page 128 TW20_NS20_EW20 Series Weighing Indicator Technical Manual 16.3 Display Replacement Disconnect keyboard cable and display cable from the main board Release 4 screws at main board Release 4 screws at display bracket Release 4 screws at display 16.4 Printer Replacement (EW20) Release the two screws in the printer as shown below Disconnect the power cable to printer Remove the printer assembly...

  • Page 129: Schematic

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual 17.SCHEMATIC Main board power Main board MCU - 125 -...
  • Page 130 TW20_NS20_EW20 Series Weighing Indicator Technical Manual - 126 -...

  • Page 131: Technical Data

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual 18. TECHNICAL DATA 18.1 General Specification TW20 MODEL Max. Divisions 7500e Weighing Units kg/g/lb/oz.tj/gj/t Display 4.3” LCD color display Load cell excitation voltage 5 VDC Minimum input impedance 43 ohm Maximum input impedance 1600 ohm...

  • Page 132: Printer Specification (Ew20)

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual Dimensions 269 x 189 x 100 (W x D x H ) mm Net weight 2.5 kg Gross weight 3.2 kg MODEL EW20 Max. Divisions 7500e Weighing Units kg/g/lb/oz.tj/gj/t Display 4.3” LCD color display Load cell excitation voltage 5 VDC Minimum input impedance...

  • Page 133: Overall Dimension

    TW20_NS20_EW20 Series Weighing Indicator Technical Manual 18.3 Overall Dimension TW20 NS20 EW20 - 129 -...
  • Page 134 TW20_NS20_EW20 Series Weighing Indicator Technical Manual Declaration of Conformity Manufacturer TScale Electronics Mfg.(Kunshan) Co., Ltd Model TW20_EW20_NS20 Registration No AT18230EC000312 EMC Directive 2014 / 30 / EU Applicable EN 55032: 2015 Standards EN IEC 61000-3-2:2019 EN 61000-3-3: 2013 + A1: 2019 EN 55035:2017 Note: The declaration is only valid if the non-automatic weighing instrument was verified by the manufacturer or with a certificate of conformity issued by a...
  • Page 135 The company was founded in Taiwan in 1967 as Taiwan Scale Mfg Co., Ltd in order to produce Mechanical Weighing Instrument. Today, this privately owned company is recognized worldwide as a leading Electronic Weighing Scale Manufacturer. The core business of TSCALE is the development, manufacture, worldwide sales/marketing and service of electronic weighing instruments.

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