User Manual Precisions scales – WTB series Manual number: ITKU-24-01-03-10-A MANUFACTURER OF ELECTRONIC WEIGHING INSTRUMENTS RADWAG Wagi Elektroniczne 26 – 600 Radom Bracka 28 Street - POLAND Phone +48 48 384 88 00, phone/fax. +48 48 385 00 10 Selling department +48 48 366 80 06 www.radwag.
MARCH 2010 -2-
TABLE OF CONTENTS 1. INTENDET USE..................................................................................................................... 5 2. PRECAUTIONS..................................................................................................................... 6 2.1. Maintenance .................................................................................................................. 6 2.2. Accumulator / battery pack ...........................................................
16.3. Counting pieces of the same mass ........................................................................... 36 16.4. +/- control referring to the inscribed standard mass .................................................. 38 16.5. Control of % deviation referring to the inscribed standard mass ............................... 40 16.5.1. Standard mass determined by its weighing..................................................... 40 16.5.2. Mass of standard inscribed to scale memory ....................
1. INTENDET USE Scales are designed for fast and precise measurements of weighed loads masses and direct commercial settlements. Tarring in full weighing range enables to determine net mass of weighed loads. Additional display is additional equipment of scale.
2. PRECAUTIONS 2.1. Maintenance A. Please, read carefully this user manual before and use the device according to its intended use. B. Devices that are to be withdrawn from use age should be sent back to the producer or in case of own utilization do it according to the law. 2.2. Accumulator / battery pack WTB scales are devices designed to be supplied from NiMH batteries (nickel-metal-hydrogen) with rated voltage of 1.
3. WARRANTY CONDITIONS A. RADWAG is obliged to repair or change those elements that appears to be faulty because of production and construction reason, B. Defining defects of unclear origin and outlining methods of elimination can be settled only in participation of a user and the manufacturer representatives, C. RADWAG does not take any responsibility connected with destructions or losses derives from non-authorized or inappropriate (not adequate to manuals) production or service procedures, D.
Scales WTB 200 series Scales WTB 2000…3000 series 5.
Scales WTB 2000…3000 series • Install the pan according to the drawing below: Scales WTB 200 series Scales WTB 2000…3000 series -9-
6. GETTING STARTED • After unpacking and mounting the scale level it out. Use levelling legs and the level condition indicator installed in the basis of the scale. • Turn the device on using the key – keep pressing the key for about 0,5 sec, • Wait for the test completion, • Then you will see zero indication and pictograms: - zero indication - stable result kg - weight unit • If the indication is not zero press zero key. 7.
8. KEYPAD Keypad of WTB series 9. KEYS’ FUNCTIONS Switching on/off Function key (operation mode selection) Sending a weighing result to RS232 Zeroing Tarring Notice: + keys’ functions changes. The way of operation After pressing in this mode is described in details further in this manual.
10.
11. USER MENU 11.1. Submenus User’s menu is divided into 6 basic submenus. Each group has its own characteristic name preceded by the letter P and a number. P1 rEAd P 1.1 Fil P 1.2 Auto P 1.3 tArA P 1.4 Fnnd P2 Prnt P2.1 Pr_n P2.2 S_Lo P2.3 bAud P2.4 S_rS P3 Unit P3.1 StUn P4 Func P4.1 FFun P4.2 Funi P4.3 PcS P4.4 HiLo P4.5 PrcA P4.6 Prcb P4.7 AtAr P4.8 toP P4.9 Add P4.A AnLS P4.b tArE P5 othr P5.1 bL P5.2 bLbt P5.3 bEEP P5.4 t1 P5.5 CHr6 P6 CAL P6.1 St_u P6.
11.2. Browsing user menu Use scale’s keys to move inside the menu. 11.2.1. Keypad Entering main menu + + Inscribing tare value Increasing a digit value by „1” moving down in the menu Battery / accumulator state monitoring + Toggling between gross / net values + Selecting the parameter or changing the value of a selected parameter Entering the selected submenu or activating a parameter for changes Confirmation (enter) Leaving without changes or reaching a higher level of the menu 11.2.2.
12. WEIGHING Put a load you want to weigh on the weighing pan. When the pictogram appears it means that the result is stable and ready to read. In order to assure long-term operation and appropriate measurements of weighted loads following precautions should be taken into consideration: • Loads should be placed on the pan delicately and carefully in order to avoid mechanical shocks: • Loads should be placed centrally on the pan (errors caused by eccentric weighing are outlined by standard PN-EN 45501 ch.
12.1. Tarring In order to determine the net mass put the packaging on the pan. (Net pictogram will be displayed in the left After stabilising press upper corner and zero will be indicated). After placing a load on the weight pan net mass will be shown. Tarring is possible within the whole range of the scale. After unloading the pan the display shows the tarred value with minus sign. Notice: Tarring cannot be performer when a negative or zero value is being displayed.
• Using • • , Press Program returns to weighings mode. The inscribed tare value can be seen on the display with „–” sign, Tare can be inscribed anytime in weighings mode. • and set the tare value, Notice: 1. You cannot inscribe a new tare value when the tare value in memory is greater than zero. In the case of trying this the message will be displayed and short audible signal will be emitted. 2. Users can also enter up to 9 tare values to the scale memory (see 16.10 of his manual). 12.3.
12.5. Selection of basic weight unit This function is used to set weight unit the scale will start with. Procedure: • Enter the submenu and then: • press , until the expected unit appears on the display: Options: A. When the basic unit is [kg], users can toggle between: [kg, lb, N], for verified scales [lb] is not accessible, B.
• After you select the unit press , the scale returns to: • Return to weighing according to chapter - 11.2.2. Notice: After turning on the scale always sets the basic unit. 12.6. Temporarily selected unit This function is used to set weight unit the scale will use temporarily until the next power off or next selection. Procedure: • Press and then: • After you select the unit you want come back to weighing procedure.
Options: A. When [kg] is a basic unit, users can select following units: [kg, lb, N], [lb] is not accessible for verified scales; B. When [g] is a basic unit, users can select following units: [g, ct, lb], [lb] is not accessible for verified scales. 13. MAIN PARAMETERS Users can adjust the scale to external ambient conditions (filtering level) or particular needs (autozero operation, tare memory). This parameters are placed in submenu. 13.1.
Notice: Filtering level influences the time of stabilization. The higher the filtering level is the longer stabilization time is needed. Return to weighing: See - 11.2.2. 13.2. Median filter This filter eliminates short changes (impulses) of measure signal (e.g. shocks). Procedure: • Enter the submenu and then: Fnnd Fnnd no - filter disabled YES - filter enabled Return to weighing: See - 11.2.2.
13.3. Autozero function The autozero function has been implemented in order to assure precise indications. This function controls and corrects „0” indication. While the function is active it compares the results continuously with constant frequency. If two sequentional results differ less than the declared value of autozero range, so the scale will be automatically zeroed and the and will be displayed. pictograms When AUTOZERO is disabled zero is not corrected automatically.
13.4. Tare function This parameters enables users to configure a tare function. Procedure: • Enter the submenu and then: tArA AtAr - automatic tare function on and is stored in balance memory after unplugging it from mains (Description of function operating point 16.
14. RS 232 PARAMETERS External devices connected to RS 232C have to be supplied from the same mains and common electric shock protection. It prevents from appearing a potential difference between zero leads of the two devices. This notice does not apply to the devices that do not use zero leads.
Pr_n noStAb - Pr_n Pr_n Pr_n Pr_n StAb rEPL CntA Cntb - immediate printout (not accessible in verified scales) sending stable results automatic operation continuous transmission in basic unit continuous transmission in present unit Return to weighing: see 11.2.2. 14.2. Minimal mass threshold This function is necessary while working with automatic tare or automatic operation or weighing animals.
Return to weighing: see 11.2.2. 14.3. Baud rate Procedure: • Enter the submenu
Return to weighing: see 11.2.2. 14.4. Serial transmission parameters Procedure: • Enter the submenu
15. OTHER PARAMETERS The user can set parameters which influence the scale operation. They are gathered in the submenu e.g. backlight and beep signal. Enter this submenu according to chapter 11.2. 15.1. Backlight function Program recognises the way the scale is supplied (mains, battery) and automatically selects the way of operating on the backlight: bl blbt – for mains – for batteries or rechargeable battery pack 15.1.1.
Return to weighing: See 11.2.2. Notice: When bl=Auto, and the indication has not changed for 10s, the backlight is automatically switched off. The backlight is switched on again automatically after the result changes. 15.1.2. Backlight for supplying from batteries The user can change the intensity of backlight from 0% to 100%. The lower the intensity is the longer the scale operates without recharging or exchanging batteries. When the intensity is set this function works as AUTO (described above).
15.2. “Beep” signal – after pressing a key Procedure: • Enter the submenu and then: bEEP bEEP no - switched off YES - switched on Return to weighing: See 11.2.2. 15.3. Automatic switch-off This function is essential to save the battery power. The scale is switched off automatically when (function t1 = YES) no weighing appears in 5 minutes. (no changes on the display). In case when this function disrupts the operation (e.g.
* automatic enabling/disabling according to the source of power. Procedure: • Enter the submenu and then: Returnto weighing: See 11.2.2. 15.4. Battery voltage level check While supplying from batteries too low level of voltage is measured by software the pictogram is displayed. It means that charging or exchanging batteries is required. 15.4.1. Checking the batteries This function is to check the level of battery supply.
Procedure: After displaying the level of batteries (in per cents) the program returns to weighing. 15.4.2. Battery discharge pictogram The symbol (bat low) switches on when the voltage level drops to 18% of the accepted level of voltage. It means that charging or exchanging batteries is required.
• Message „nImh” appears on the display, • In case of damaging accumulators or lack of it the pictogram blinks quickly (period about 0.5 sec). Notice: Indicators are equipped with the set of rechargeable batteries NiMH R6 (AA) and power adapter. Procedure: • Enter the submenu and then: CHr6 YES CHr6 no - enabled - disabled Return to weighing: See 11.2.2. 15.4.4.
Procedure: 1. 2. 3. 4. 5. Supply the indicator from mains. Charge batteries for 12 hours (time of charging 2200mAh batteries). After 12 hours unplug from mains. Use the device up to the moment of self powering down. Repeat the process of charging starting from point 1. Notice: They reach their optima capacity after three cycles of full charging and discharging. 16. OPERATION MODES 16.1.
no YES – mode is disabled – mode is enabled Return to weighing: See 11.2.2. 16.2. Selecting quantity of operation modes This function enables user to set if ,after pressing key, all operating modes will be accessible (ALL) or only one from the list chosen and used by operator. Procedure: • Enter the submenu and then: After choosing setting press key. The program will return to displaying name of submenu . Return to weighing: See 11.2.2.
16.3. Counting pieces of the same mass Standard solution is equipped with option of counting small pieces of the same mass. It is possible to execute a tare function in this operating mode in order to tare a container value. Notice: 1. Counting pieces does not work together with other scale functions, 2. The counting pieces function is not saved as a default start function so it is not remembered after restarting. Procedure: • Enter to function: • You will see a blinking value of sample quantity.
• If option is choosen in the scale program displays estimated unit mass of the last piece (about 3 sekonds) and then goes to Counting pieces automatically setting the previously displayed value as valid for the procedure.
Notice: key when load is not present on the pan, 1. If a user presses the the message -Lo- will be indicated for a few seconds and the scale will automatically return to weighing. 2. In order to comply with the rules of appropriate counting pieces put as many pieces as possible during unit mass adjustment. Single piece mass should not be less than 5 divisions. 3. If a single piece mass is lower than a reading interval d the display will show the message (see ch. 21.
• The inscribed value confirm by pressing , the program will automatically go to the higher threshold of weighing (Max): • The inscribed value confirm by pressing automatically go to the main window. , the program will • During setting threshold values following cases take place: Notice: If a user erroneously enters a value of the lower threshold higher than the upper one, the scale will indicate an error message and will return to weighing.
Return to weighing: • Press the key twice. 16.5. Control of % deviation referring to the inscribed standard mass Scale software enables control of deviation (in %) of weighed loads mass referring to the inscribed standard mass. Mass of standard can be determined by its weighing (PrcA function) or entered to the scale memory by an user (PrcB function). 16.5.1.
Return to weighing: • Press the key twice. 16.5.2. Mass of standard inscribed to scale memory Procedure: • Enter to function: • The program goes to the weight display window: • Using where: and set standard mass, - digit selection, - digit setting. , • Confirm the entered value by pressing • You will see the indication equal to 0,000%, • From this moment display will not indicate the mass of weighed load but deviation of the load mass placed on the pan referring mass of standard (in %).
Return to weighing: • Press the key twice. 16.6. Automatic tare This function is useful for fast net mass determination of weighed load in case when tare value of is different for each load.
16.7. Measurement max force on the pan – latch Procedure: • Enter to function: • Confirmation of choice of function is indication of the Max pictogram: • Apply a force to the weighing pan, • The display of scale will latch the maximum value of the force, • Remove loads from the pan, • Before the next measurement press the key. Return to weighing: • Press the key twice. 16.8. Totalizing Scale software is equipped in a totalizing function of single weighings.
16.8.1. Enabling the work mode Procedure: • Enter to function: • A letter „P” in the left side of the display is a confirmation that function have been selected: 16.8.2. Totalizing procedure • Enter function according to ch. 16.8.1, • Put the first load on the pan. If the weighing procedure is performed in a container put the container on the pan first and tare it.
• Take off the load from the pan, indication returns to ZERO and the letter „P” in the left part of the display appears, • Put the next load on the pan, • After stabilizing press , the sum of first and second weighing will appear on the display, the „▲” pictogram in the upper right corner will be displayed and the second weighing result will be printed on the printer connected to the indicator: to complete the procedure (with the loaded or unloaded • Press pan), a sum of all weighings will be printed: (1)
- In order to continue the procedure press , the indication returns to ZERO and the letter „P” appears in the left part of the display. The scale is ready for weighing, - In order to terminate the previous totalizing procedure press , or . You will see the letter „P” in the left part of the key, display. The scale is ready for weighing. 16.8.4.
16.9.
• Load an animal to the platform, • After exceeding the -LO- value (see 14.2), program starts the weighings process.
16.10.1.
• Enter the selected tare value to the scale memory , • The program returns to the following window: Return to weighing: • Press . 16.10.2. Selecting a tare value from the memory • Enter function according to the ch. 16.10.
17. USER CALIBRATION Only for non-verified scales Confirmation of high accuracy of weighing requires periodical correcting of calibration factors in the scale memory – this is adjustment of the scale. Calibration should be performed when we start weighing or dynamic change of temperature occurs. Before starting calibration remove loads from the pan. 17.1. Calibration Procedure: • Enter submenu
• Place the required weight on the pan, • Calibration process starts automatically after placing the adequate weight that is signalled by the following message: • The completion of the calibration procedure is signalled by the following message: • Take off the weight from the pan, the message is displayed for 1s and the program returns to the calibration submenu: • Calibration process can be terminated anytime by pressing which is signalled by the following message on the display: • Return to wei
17.2. Start mass adjustment If the scale does not require the full calibration process sit is possible to adjust only a new start mass. Procedure: • Enter the submenu
• Return to weighing performing the procedure of saving parameters. Return to weighing: See 11.2.2. Caution: If the start mass adjustment lasts longer than 15 the message will be displayed and short audible signal will be emitted. Press to perform calibration again with more stable ambient conditions! 18. COOPERATION WITH PRINTER key is pressed a current mass value together with Each time the mass units is sent to RS 232 interface.
Cable diagrams: Scale – Kafka printer cable diagram 19. COOPERATION WITH COMPUTER Sending weighing results to the computer can be done: - manually - in continuous way - - automatically - on the request from the computer - after pressing key, after function activating or sending an appropriate command, After stabilizing the indication - After sending a control command These scales can cooperate with „EDYTOR WAG” program.
20. COMMUNICATION PROTOCOL 20.1. General information A. A character protocol scale-terminal has been designed for communication between RADWAG scales and external devices via RS-232 interface. B. It consists of commands sent from an external device to the scale and a responses from a scale. C. Responses are sent every time after receiving a command (reaction for any command). D. Using commands allows users to receive some information about the state of scale and/or influence the operation e.g.
20.3.
T_A CR LF T_D CR LF - command accepted and in progress - command completed T_A CR LF T_v CR LF - command accepted and in progress - command comprehended but tare range overflow appeared T_A CR LF T_E CR LF - command accepted and in progress - time limit for stable result exceeded T_I CR LF - command comprehended but cannot be executed 20.4.3.
Frame format: 1 2-3 4 5 6 7-15 16 S space stability space sign mass space 17 18 19 unit 20 21 CR LF Example: S CR LF – computer command S _ A CR LF - command accepted and in progress S _ _ _ _ - _ _ _ _ _ _ 8 . 5 _ g _ _ CR LF – command done, mass value in basic unit is returned. 20.4.5.
SU_A CR LF SU_E CR LF - command accepted and in progress - timeout while waiting for stable results SU_I CR LF - command comprehended but cannot be executed SU_A CR LF MASS FRAME - command accepted and in progress - mass value in current unit is returned Frame format: 1 2 3 4 5 6 7-15 16 S U space stability space sign mass space 17 18 19 unit 20 21 CR LF Example: S U CR LF – computer command S U _ A CR LF - command accepted and in progress S U _ _ _ - _ _ 1 7 2 .
20.4.8. Switch on continuous transmission in basic unit Syntax: C1 CR LF Possible answers: C1_I CR LF - command comprehended but cannot be executed C1_A CR LF MASS FRAME - command comprehended and in progress - mass value in basic unit is returned Frame format: 1 2 3 4 5 6 7-15 16 S I space stability space sign mass space 17 18 19 unit 20 21 CR LF 20 21 CR LF 20.4.9.
20.4.11. Switch off continuous transmission in current unit Syntax: CU0 CR LF Possible answers: CU0_I CR LF - command comprehended but cannot be executed CU0_A CR LF - command comprehended and executed 20.4.12. Send all implemented commands Syntax: PC CR LF Possible answers: PC_- >_Z,T, TO,S,SI,SU,SUI,C1,C0,CU1,CU0,PC – command executed, the indicator have sent all the implemented commands. 20.5. Manual printouts / automatic printouts Users can general manual or automatic printouts from the scale.
Stability character sign mass unit command [space] if stable [?] if not stable [^] if an indication over the range [v] if fan indication below the range [space] for positive values or [-] for negative values 9 characters justified to the right 3 characters justified to the left 3 characters justified to the left Example 1: _ _ _ _ _ _ 1 8 3 2 . 0 _ g _ _ CR LF – the printout generated from the scale after pressing ENTER/PRINT. Example 2: ? _ - _ _ _ _ 2 .
Stability character sign mass unit command [space] if stable [?] if not stable [^] if an indication over the range [v] if fan indication below the range [space] for positive values or [-] for negative values 9 characters justified to the right 3 characters justified to the left 3 characters justified to the left The frame format sent by the indicator in case of setting to Cntb: 1 2 3 4 5 6 7-15 16 S U I stability space sign mass space 17 18 19 unit 20 21 CR LF 20.7.
NULL - Zero value from the AD converter FULL2 - Measurement range overflow LH - Start mass error, the mass on the weighing platform is beyond the acceptable range (-5% to +15% of start mass) 5-FULL - Display range overflow in totalizing Notice: 1. Errors: Err2, Err3, Err4, Err5, Err8, null, that appear on the display are also signalled by a short beep sound (about 1 sec.); 2. Error FULL2 that appears on the display is also signalled by a continuous sound until the cause of error disappears. 22.
23.
MANUFACTURER OF ELECTRONIC WEIGHING INSTRUMENTS RADWAG WAGI ELEKTRONICZNE 26 – 600 Radom, Bracka 28 Street POLAND Phone +48 48 384 88 00, phone/fax. + 48 48 385 00 10 Selling department + 48 48 366 80 06 www.radwag.
