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Summary of Contents for LAUMAS WDESK-LIGHT
- Page 1 ENGLISH ENGLISH ENGLISH ENGLISH Installation and User Manual version 1.07 WDESK-LIGHT 2014/30/EU EN55022:2010 EN61000-6-2:2005 EN61000-6-4:2007...
- Page 2 - tampering, deletion, removal of the identification label and/or serial number of the product - misuse, transformation, alteration, repair of products not carried out by Laumas personnel Laumas provides a 1-year warranty from the date of the delivery note on defects in material or manufacture of the battery. GUIDELINES FOR PROPER DISPOSAL...
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Page 3: Table Of Contents
TABLE OF CONTENTS USER WARNINGS ........................1 RECOMMENDATIONS FOR CORRECT INSTALLATION OF WEIGHING INSTRUMENTS . 1 RECOMMENDATIONS FOR CORRECT INSTALLATION OF THE LOAD CELLS ....1 LOAD CELL INPUT TEST (QUICK ACCESS) ................3 LOAD CELL TESTING ....................... 3 ... - Page 4 TEST ............................25 ENERGY SAVING ........................25 DATE AND TIME SETTING ..................... 25 INFO MENU ..........................25 SETPOINT PROGRAMMING ....................26 PIECE COUNTER ........................27 INCREASING OPERATION ..................... 27 DECREASING OPERATION ....................27 ...
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Page 5: User Warnings
USER WARNINGS RECOMMENDATIONS FOR THE PROPER USE OF WEIGHING INSTRUMENT Keep away from heat sources and direct sunlight Repair the instrument from rain (except special IP versions) Do not wash with water jets (except special IP versions) Do not dip in water Do not spill liquid on the instrument Do not use solvents to clean the instrument Do not install in areas subject to explosion hazard (except special Atex versions) - Page 6 CONNECTING SEVERAL CELLS IN PARALLEL: Connect several cells in parallel by using - if necessary - a watertight junction box with terminal box. The cell connection extension cables must be shielded, led individually into their piping or conduit and laid as far as possible from the power cables (in case of 4-wire connections, use cables with 4x1 mm minimum cross-section).
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Page 7: Load Cell Input Test (Quick Access)
LOAD CELL INPUT TEST (QUICK ACCESS) From the weight display, press ▲ for 3 seconds; the response signal of the load cells is displayed, expressed in mV with four decimals. LOAD CELL TESTING Load cell resistance measurement (use a digital multimeter): - Disconnect the load cells from the instrument and check that there is no moisture in the cell junction box caused by condensation or water infiltration. -
Page 8: Main Specifications Of The Instrument
Two serial ports (RS485 and RS232) for connection to: PC/PLC up to 32 instruments (max 99 with line repeaters) by ASCII Laumas or ModBus R.T.U. protocol, remote display, printer, RD data recorder. Switching power supply plug 24 V 450 mA, input 100÷240 VAC, 3 meters long cable (included) -
Page 9: Technical Specifications
TECHNICAL SPECIFICATIONS POWER SUPPLY and CONSUMPTION (VDC) 12/24 VDC ±10%; 6 W NO. OF LOAD CELLS IN PARALLEL and SUPPLY max 8 (350 ohm); 5 VDC/120 mA LINEARITY < 0.01% F.S. THERMAL DRIFT < 0.0005% F.S./°C A/D CONVERTER 24 bit (16000000 points) MAX DIVISIONS ±999999 (with measurement range: ±10 mV = sens. -
Page 10: Electrical Connections
ELECTRICAL CONNECTIONS BASIC INFORMATION - It is recommended that the power supply negative pole be grounded. - It is possible to supply up to eight 350 ohm load cells or sixteen 700 ohm load cells. - For 4-wire load cells, make a jumper between EX- and REF- and between EX+ and REF+. - Connect terminal “–... -
Page 11: Terminals Legend
TERMINALS LEGEND Terminal Signal Terminal Signal -LOAD CELL EXCITATION (-Exc) LOAD CELL SHIELD +LOAD CELL EXCITATION (+Exc) INPUT No. 1 +LOAD CELL REF/SENSE (+VDC min 5 V max 24 V) INPUT No. 2 -LOAD CELL REF/SENSE (+VDC min 5 V max 24 V) -LOAD CELL SIGNAL (-Sig) INPUT COMMON (-VDC 0 V) +LOAD CELL SIGNAL (+Sig) -
Page 12: Keys And Symbols Functions
KEYS AND SYMBOLS FUNCTIONS KEYS Long press Short press Into menus (3 s) Power-on Power-off Tare Cancel or return to previous Semi-automatic zero resetting menu Select figure to be modified Gross Net Net Gross or go to previous menu item. Select operating mode (base, piece counter, totalizer) mV load cell... - Page 13 SYMBOLS 9 10 Symbol Function LED POWER power supply available preset tare enabled gross weight net weight (semi-automatic tare or preset tare) stability zero (deviation from zero not more than ±0.25 divisions) peak function enabled not used value displayed is not a weight not used not used active coefficient...
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Page 14: Menu Map
MENU MAP Into menus changes are applied right after pressing the ENTER key ( no further confirmation is required). SETPOINT SYSTEM PARAMETERS ... -
Page 15: Instrument Commissioning
INSTRUMENT COMMISSIONING To turn on the instrument press ON. To turn it off press OFF for about 3 seconds: when appears release the key. After a blackout the instrument DOES NOT come on again automatically, you have to press ON. To guarantee an automatic restart after a blackout, disable the ON key (see section AFTER A BLACKOUT). -
Page 16: Programming Of System Parameters
PROGRAMMING OF SYSTEM PARAMETERS From the weight display, press simultaneously keys MENU and ESC to access the parameter setting. MENU/ENTER: to enter a menu/confirm the data entry. ▲: to modify the displayed figure or menu item. ◄: to select a new figure or modify the displayed menu item. ESC: to cancel and return to the previous menu. -
Page 17: Maximum Capacity
MAXIMUM CAPACITY : Maximum displayable weight (from 0 to max full scale; default: 0). When the weight exceeds this value by 9 divisions, the display shows . To disable this function, set 0. TARE WEIGHT ZERO SETTING ... -
Page 18: Real Calibration (With Sample Weights)
REAL CALIBRATION (WITH SAMPLE WEIGHTS) After having performed the THEORETICAL CALIBRATION and TARE WEIGHT ZERO SETTING, this function allows correct calibration to be done using sample weights of known value and, if necessary, any deviations of the indicated value from the correct value to be corrected. -
Page 19: Filter On The Weight
FILTER ON THE WEIGHT Setting this parameter allows a stable weight display to be obtained. To increase the effect (weight more stable) increase the value (from 0 to 9, default 4). As seen in the diagram: - By confirming the message, the currently programmed filter value is displayed. - By changing and confirming the value, the weight is displayed and it will be possible to experimentally verify its stability. -
Page 20: Zero Parameters
ZERO PARAMETERS RESETTABLE WEIGHT SETTING FOR SMALL WEIGHT CHANGES (from 0 to max full scale; default: 300; considered decimals: 300 – 30.0 – 3.00 – 0.300): this parameter indicates the maximum weight value resettable by external contact, keypad or serial protocol. -
Page 21: Setting Units Of Measure
SETTING UNITS OF MEASURE These are the available units of measure: kilograms : grams : : tons pounds* : : newtons* litres* : bars* : atmospheres* : pieces* : : newton metres* : kilogram metres* other generic units of measure not included in the list* : If the print function is enabled, the symbol corresponding to the selected unit of measure will be printed after the measured value. - Page 22 If the unit of measure chosen is: : pounds, the value set in will be multiplied by the weight value currently displayed; : newton, the value set in will be multiplied by the weight value currently displayed; : litres, in set the specific weight in kg/l, assuming that the system is calibrated in kg; : bar, the value set in ...
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Page 23: Outputs And Inputs Configuration
OUTPUTS AND INPUTS CONFIGURATION OUTPUTS The outputs are set by default as follows: / / / / . Possible operation modes: - (normally open): the relay is de-energised and the contact is open when the weight is lower than the programmed setpoint value;... -
Page 24: Semi-Automatic Tare (Net/Gross)
INPUTS Default: input 1 = input 2 = Possible operation modes: - (NET/GROSS): by closing this input for no more than one second, it’s making an operation of SEMI-AUTOMATIC TARE and the display will show the net weight. To display the gross weight again, hold the NET/GROSS input closed for 3 seconds.... -
Page 25: Preset Tare (Subtractive Tare Device)
PRESET TARE (SUBTRACTIVE TARE DEVICE) It is possible to manually set a preset tare value to be subtracted from the display value provided that the ≤ max capacity condition is verified. By default the instrument shows the last programmed preset tare value: to apply it press ▲ and then ENTER. -
Page 26: Peak
PEAK By keeping the PEAK input closed the maximum weight value reached remains displayed. By opening the input the current weight is displayed. If you wish to use this input to view a sudden variation peak, set the FILTER ON THE WEIGHT to 0. - Page 27 When the remote display is set to gross weight: - if the instrument displays the gross weight, the remote display shows the gross weight. - if the instrument shows the net weight, the remote display shows the net weight alternated with the message .
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Page 28: Rs232 Serial Communication
RS232 SERIAL COMMUNICATION INSTRUMENT RS232 TXD RS232 RXD DB9-F RS485 SERIAL COMMUNICATION INSTRUMENT INSTRUMENT INSTRUMENT max 500 m 24 VDC RS485 + RS485 + RS485 - RS485 - CONVLAU If the RS485 network exceeds 100 metres in length or baud-rate over 9600 are used, two terminating resistors are needed at the ends of the network. -
Page 29: Test
TEST - Input Test: : ensure that for each open input is displayed, is displayed when the input is closed. - Output Test: : setting ensure that the corresponding output opens. Setting ensure that the corresponding output closes. -
Page 30: Setpoint Programming
SETPOINT PROGRAMMING From the weight display, press MENU to access the setpoint setting. MENU/ENTER: to enter a menu/confirm the data entry. ▲: to modify the displayed figure or menu item. ◄: to select a new figure or modify the displayed menu item. ESC: to cancel and return to the previous menu. -
Page 31: Piece Counter
PIECE COUNTER Weight has to be set to zero before selecting operation type. INCREASING OPERATION - Load the empty container on the scale; - press TARE to display zero (net weight); - press START, select and confirm with ENTER, appears on the display; - insert sample pieces in the container and press ENTER;... -
Page 32: Enabling Setpoint
In piece counter mode you can: - set weight to zero for small variations (press and confirm with ENTER); - set semi-automatic tare (press TARE); - do a new sampling (press START for 3 seconds, appears, press ENTER, set number of pieces on scale and confirm with ENTER);... -
Page 33: Totalizer
TOTALIZER SELECT TOTALIZER OPERATING MODE - : basic operations; - : piece counter; - : totalizer; Select and press ENTER to confirm. Select type of totalization: - : fast manual totalization, the display shows for 1 second; - : normal manual totalization, the display shows the number of the weighing for 1 second and then the total weight for 1 second;... - Page 34 Press PRINT to store and print weight values and number of weighing (), see section PRINTING EXAMPLES. If an input is configured as , closing that input gives you the same functions as if you had pressed PRINT. TOTALIZATION NOTES: the weight is only totalized and printed if not 0; if the instrument is metric the weight has to satisfy metric conditions (stabled weight and equal to at least 20 divisions) whatever the settings selected.
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Page 35: Enabling Setpoint
ENABLING SETPOINT Setpoint can be used to signal that totalized partial weight and total weight have been reached; do the following to enable them: -(default): setpoint disabled; -: setpoint enabled; Setpoint 1 and 2 switch respectively based on totalized partial weight and total weight, while the others always switch on weight. -
Page 36: Alarms
ALARMS : the load cell is not connected or is incorrectly connected; the load cell signal exceeds 39 mV; the conversion electronics (AD converter) is malfunctioning; the load cell is a 4- wire and there are no jumpers between EX- and REF- and between EX+ and REF+. the weight display exceeds 110% of the full scale. -
Page 37: Printing Examples
PRINTING EXAMPLES If the printer has been set (see section SERIAL COMMUNICATION SETTINGS), from the weight display press the PRINT key for less than 3 seconds: BASIC PRINTOUT: ----------------------- WDKL BASE Addr:01 DATE: 12/09/11 14:48:12 GROSS 878 kg 589 kg TARE 289 kg BASIC PRINTOUT (PEAK ENABLED):... - Page 38 PIECE COUNTER PRINTOUT: ----------------------- WDKL BASE Addr:01 DATE: 12/09/11 14:48:12 GROSS 155 kg 155 kg TARE 0 kg 3154.77 TOTALIZER PRINTOUT: ----------------------- WDKL BASE Addr:01 DATE: 12/09/11 14:48:12 GROSS 155 kg 155 kg TARE 0 kg TOTAL 3500 kg TOTP 2350 kg STORED TOTALIZED PRINTOUT: -----------------------...
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Page 39: Reserved For The Installer
RESERVED FOR THE INSTALLER MENU LOCKING Through this procedure, it’s possible to block the access to any menu on the instrument. Select the menu that you wish to lock: press ESC and ◄ simultaneously for 3 seconds, the display shows ... -
Page 40: Keypad Or Display Locking
PROGRAM SELECTION: confirm and use the arrow keys to select the desired program: : basic program, setpoint management only. : to be used when the loaded weighing system correspond to not loaded cells and vice versa (product increases while weight on load cells actually decreases). : weight remote display program with setpoint. -
Page 41: Declaration Of Conformity - Eu
EN 61000-6-4:2007 2014/30/EU EN 61000-4-2:2009 EMC Directive EN 61000-4-3:2006+A2:2010 EN 61000-4-4:2012 EN 61000-4-5:2014 EN 61000-4-6:2014 2014/31/EU EN 45501:2015 NAWI Directive OIML R76-1:2006 (only if “M” mark is applied) Montechiarugolo (PR), 14/01/2021 LAUMAS Elettronica s.r.l. M. Consonni (Legal Representative) - 37 -... - Page 44 On our website www.laumas.com there are videos on the guidelines for correct installation of weighing systems and video tutorials on configuring our transmitters and weight indicators. All Laumas product manuals are available online. You can download the manuals in PDF format from www.laumas.com by consulting the Products section or the Download Area.
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