Installation and User Manual ANALOG WEIGHT TRANSMITTER
Contents
1. 00 LL 0700 02 OD m Il I cog 1 og 123 123 1234 56 7 8 9 10111213141516 E ME AE 22 S S 3 S S S S 3 S S S S 0 ow oo E 9 o O o O O O o O D MUN To i t E pL E 1 Selector switch 2 Knob control 3 DIP switch 5 5485 SERIAL CONNECTION iconem RS485 RS485 Ta 00m 24 Vcc N m SSeS Ta TX o RS485 RS485 c H o TX o RS485 RS485 Bo me RX Oo E CL ES Me connect two 120 ohm terminating resistors between the and terminal strip ends of the instruments furthest away Should there be different instruments or converters refer to the specific manuals to determine whether it is necessary to connect the above mentioned resistors y If the RS485 network is longer than 100 metres or baud rates higher than 9600 are used ANALOG OUTPUT TYPE SELECTION Set the indicated DIP switch with MODE tallo OPERATION MODE By default the instrument is calibrated to convert the load cell 0 10 mV to the selected analog output value 0 By modifying the type of analog output calibration will be brought back to default values 2 INSTRUMENT COMMISSIONING Power the transmitter and wait 5 minutes until all the compone2. 3 2 No of registers 2 where of registers number of Modbus registers to be read starting from register 1 address No of bytes number of following data bytes In the event of a string received correctly but not executable the slave responds with an EXCEPTIONAL RESPONSE The FUNCTION field is transmitted with the msb at 1 EXCEPTIONAL RESPONSE CODE DESCRIPTION 1 ILLEGAL FUNCTION Function not valid not supported ILLEGAL DATA n The specified data address is not available ILLEGAL DATA VALUE The data received have no valid value The communication strings are controlled by CRC Cyclical Redundancy Check In case of a communication error the slave will not respond with any string The master must allow for a time out before response reception and if no response is received it infers that a communication error has occurred 10 REGISTERS AND VALUES The instrument ModBus registers may only be read H L high half and low half respectively making up the DOUBLE WORD value REGISTER DESCRIPTION 40007 STATUS REGISTER STATUS REGISTER 40007 Cell Error ERCEL Bit1 AD Converter Malfunction ER AD Bit2 Off scale analog output ER OL Bit3 Bit7 Divsonnegavesign Weight stability Biti2 H amp L DIVISIONS 40008 40009 For more information see section SERIAL COMMUNICATION RS485 For additional examples regarding the ge
3. PR N 169833 Reg Imprese Via 1 Maggio 6 43022 Montechiarugolo PR Italy N 19393 Registro Nazionale Pile N IT09060P00000982 Registro A E E P IVA 1701661140341 N 1T08020000002494 PR 008385 Cap Soc Euro 10 400 int vers EC Konformitatserklarung EC Declaration of Conformity EC D claration de conformit EC Declaraci n de Conformidad EC Dichiarazione di conformit EC Conformiteitverklaring EC Declara o de conformidade EC Prohl en o shode EC Deklaracja zgodno ci Dichiarazione di Dichiariamo che il prodotto al quale la presente dichiarazione si riferisce conforme alle norme di conformit seguito citate Declaration of We hereby declare that the product to which this declaration refers conforms with the following conformity standards Declaraci n de Manifestamos en la presente que el producto al que se refiere esta declaraci n est de acuerdo con conformidad las siguientes normas Wir erkl ren hiermit dass das Produkt auf das sich diese Erklarung bezieht mit den nachstehenden Normen bereinstimmt D claration de Nous d clarons avec cela responsabilit que le produit auquel se rapporte la pr sente d claration est conformit conforme aux normes cit es ci apr s T mto prohla ujeme ze v robek kter ho se toto prohl en t k je v souladu s nize uveden mi normami Wij verklaren hiermede dat het pro
4. if the selector switch is set to ZERO or FS CAL the display will read BLOCK Confirm by holding down the control knob for at least three seconds release it to shift to the next parameter The display will show the address set for the RS485 serial connection protocol Address 0 By working the control knob it is possible to select 0 continuous division transmission according to a frequency proportional to the set baud rate 30 Hz to 300 Hz with baud rate equal to 38400 bps 1299 querying Modbus slave protocol Confirm by holding down the control knob for at least three seconds release it to shift to the next parameter The display will show the rate setting for RS485 serial connection Baud 9600 By working the control knob the transmission rate can be adjusted 2400 4800 9600 19200 38400 115200 Default 9600 bps Confirm by holding down the control knob for at least three seconds release it to quit the settings menu and return to normal instrument operation 12 13 DECLARATION OF CONFORMITY C C L ALI AS SISTEMI DI PESATURA INDUSTRIALE CELLE DI CARICO Sistema di gestione ARN Qualit certificato ELETTRONICA UNI EN ISO 9001 2008 CERTIFICAZIONE DEL SISTEMA DI GARANZIA DELLA QUALIT DELLA PRODUZIONE LAUMAS Elettronica S r l email laumas laumas it web http www laumas com Tel 439 0521 683124 Fax 39 0521 681091 Fabbricante metrico Prot N 7340 Parma R E A
5. for the recycling of waste electrical and electronic equipment The separate collection and recycling of your waste equipment at the time of disposal will help preserve natural resources and protect human health and the environment For more information about where you can drop off your waste equipment for recycling please contact your local waste disposal Authority or the equipment retailer TABLE CONTENTS USER unl tore 1 RECOMMENDATIONS FOR CORRECT INSTALLATION OF WEIGHING INSTRUMENTS 1 RECOMMENDATIONS FOR CORRECT INSTALLATION OF THE LOAD CELLS 1 LOADCELL TESTING 3 MAIN SPECIFICATIONS OF THE INSTRUMENT enerrrnrenennnnnnnnnn 4 TECHNICAL SPECIFICATIONS 4 5 spielen huge 5 WIRING DIAGRAM Meer 5 RS485 EE 6 ANALOG OUTPUT TYPE SELECTION niit notitia neci ia era aene tiec ice ene terea 6 INSTRUMENT COMMISSIONING ener enne nnne nnns 7 TARE WEIGHT ZERO SETTING 7 REAL CALIBRATION WITH SAMPLE WEIGHT eren 7 THEORETICAL CALIBRATION sis da 8 FILTER ON THE WEIGHT
6. ENGLISH lt ENGLISH gt lt ENGLISH gt lt ENGLISH Installation and User Manual version 1 00 TLE ANALOG WEIGHT TRANSMITTER 4 20 0 20 mA 0 10 V 0 5 V 10 10 V 5 5 V C 2004 108 EC EN55022 61000 6 2 EN61000 6 4 SYSTEM IDENTIFICATION KEY TO SYMBOLS Below are the symbols used in the manual to draw the reader s attention Warning Risk of electrocution Read the following indications carefully Further information N Warning This operation must be performed by skilled workers GUARANTEE 24 months from the delivery document date The guarantee covers only defected parts and includes the replacement parts and labour All shipping and packing costs are paid by the customer It is possible to have the repair in guarantee on condition that the returned product has not been transformed damaged or repaired without authorization No guarantee is applicable on returned products without the original label and or serial number No guarantee against misuse Batteries Laumas provides 1 year guarantee from the date of delivery note against material defects or battery manufacturing faults Disposal of Waste Equipment by Users in Private Households in the European Union This symbol on the product or on its packaging indicates that this product must not be disposed of with your other household waste It is your responsibility to dispose of your waste equipment by handing it over to a designated collection point
7. ccording to a continuous one way protocol or a querying protocol MODBUS the division value comprised between 0 and 200000 for load cell signal values comprised between 0 and 10 mV For protocol setting see section RESERVED FOR INSTALLER CONTINUOUS ONE WAY TRANSMISSION PROTOCOL The instrument transmits the number of divisions according to a continuous protocol via the following string XXXXXXCRLF where 6 division characters 48 57 ASCII CR 1 carriage return character 13 ASCII LF 1 new line character 10 ASCII MODBUS RTU PROTOCOL The MODBUS RTU protocol enables to manage the reading and writing of the registers listed here below according to the specifications contained in the reference document for this standard Modicon PI MBUS 300 If preceded by Ox the numerical data listed below are expressed in the hexadecimal notation format 9 MODBUS RTU DATA FORMAT Data received and transmitted via the MODBUS RTU protocol have the following format 1 start bit 8 data bits least significant bit sent first Parity none 1 stop bit Of the controls available in the MODBUS RTU protocol only the READ HOLDING REGISTER control may be used code 0x03 The interrogation frequency 15 linked with the preset communication rate the instrument will stand by for at least 3 bytes before beginning to calculate a possible response QUERY Tot bytes 8 CORRECT QUERY RESPONSE Tot bytes
8. duct waarop deze verklaring betrekking heeft met de hierna Conformiteit verklaring vermelde normen overeenstemt Declara o de Declaramos por meio da presente que o produto no qual se refere esta declara o corresponde s conformidade normas seguintes Niniejszym o wiadczamy e produkt kt rego niniejsze o wiadczenie dotyczy jest zgodny z poni szymi normami Models TLE 2006 95 Low Voltage Directive Not Applicable EN 55022 2004 108 EC EN 61000 6 2 Konformitats erklarung Prohlaseni o shode Deklaracja zgodnosci EMC Directive EN 61000 6 4 EN 61000 4 2 3 4 5 6 2009 23 EC EN 45501 1992 NAWI Directive OIML R76 1 2006 only if M mark is applied LAUMAS Elettronica s r l Montechiarugolo PR 08 05 2013 M Consonni RCQ ps A ads naL 14
9. e and the body of the load cell must be higher than 20 Mohm mega ohm Load cell voltage measurement use a digital multimeter Take out the load cell to be tested from underneath the container or alternatively lift the container support Make sure that the excitation of two wires of the load cell connected to the instrument or amplifier is 5 3 Measure the response signal between the positive and the negative signal wires by directly connecting them to the tester and make sure that it is comprised between 0 and 0 5 mV thousandths of a Volt Apply load to the cell and make sure that there is a signal increment IF ONE OF THE ABOVE CONDITIONS IS NOT MET PLEASE CONTACT THE TECHNICAL ASSISTANCE SERVICE MAIN SPECIFICATIONS OF THE INSTRUMENT Analog serial weight transmitter suitable for assembly on back panel fitted Omega DIN rail Dimensions 90x93x65 mm Current or voltage 16 bit analog output RS485 serial output with Modbus or continuous transmission protocol Zero and full scale setting Simultaneous display of the load cell reading in mV and of the analog output reading Operating mode selection via 3 position selector switch DIP switches knob control and 2 line 8 column alphanumeric display TECHNICAL SPECIFICATIONS POWER SUPPLY and CONSUMPTION 12 24 VDC 10 5 W NO OF LOAD CELLS IN PARALLEL and SUPPLY max 8 350 ohm 5 VDC 120 mA LINEARITY ANALOG OUTPUT LINEARITY l
10. hed structure The cell cable must be individually led to its panel input and not share a conduit with other cables connect it directly to the instrument terminal strip without breaking its route with support terminal strips Use RC filters on the instrument driven solenoid valve and remote control switch coils Avoid inverters in the instrument panel if inevitable use special filters for the inverters and separate them with sheet metal partitions The panel installer must provide electric protections for the instruments fuses door lock switch etc It is advisable to leave the equipment always switched on to prevent the formation of condensation MAXIMUM CABLE LENGTHS RS485 1000 metres with AWG24 shielded and twisted cables Analog current output to 500 metres with 0 5 mm cable Analog current output up to 300 metres with 0 5 mm cable RECOMMENDATIONS FOR CORRECT INSTALLATION OF THE LOAD CELLS INSTALLING LOAD CELLS The load cells must be placed on rigid stable in line structures it Is important to use the mounting modules for load cells to compensate for misalignment of the support surfaces PROTECTION OF THE CELL CABLE Use water proof sheaths and joints in order to protect the cables of the cells MECHANICAL RESTRAINTS pipes etc When pipes are present we recommend the use of hoses and flexible couplings with open mouthpieces with rubber protection in case of hard pipes place the pipe support or ancho
11. il the display reads FS CAL release the knob control and set the selector switch back to NORMAL Calibration can also be obtained by referring to the values read by devices connected to the instrument such as the PC or PLC Example The weighing system uses four 1000 kg cells the 4 20mA analog output has been selected and you wish to have 20 mA at 2000 kg Check that the system is not loaded perform the tare weight zero setting and load a sample weight of 1000 kg onto the system equal to 50 of the required full scale value move the selector switch to 5 CAL and set the analog output value to 12 mA by working the knob control range 20 4 16 mA 12 of the range 16 2 8 mA 2 of full scale 8 4 12 mA hold down the knob control until the display reads FS CAL release the knob control and set the selector switch back to NORMAL THEORETICAL CALIBRATION With this type of calibration it is possible to set the analog output value corresponding to a given value in mV read by the cell Theoretical calibration may be carried out with or without load cells connected to the M instrument The analog output is zero 4 mA for the 4 20 mA output case when the value read by the cell is 0 mV Hold down the control knob set the selector switch to FS CAL within four seconds yellow LED lighting up and release the control knob The display will show 5 00 0mvV flashing on the first line o Adjust the value by working the co
12. neration of correct control characters CRC16 refer to the manual Modicon PI MBUS 30 ALARMS ERCEL the load cell is not connected or is connected in an incorrect manner the load cell signal exceeds 39 mV the analog output generates the lowest possible value ER AD the conversion electronics is malfunctioning the analog output generates the lowest possible value check load cell connections if necessary contact technical assistance ER OL the calculated analog signal is outside the allowed generating range ANALOG OUTPUT VALUE UNDER ALARM CONDITIONS ANALOGOUTPUTTYPE Minimum 5 500 5 500 0 20 mA 0 000 24 000 4 20 mA 0 000 24 000 gio XC U UU UUU RESTORING FACTORY VALUES Turn off the instrument and set the selector switch to ZERO while holding down the control knob turn the instrument back on until the following is displayed CANC Release the control knob and set the selector switch to NORMAL rotate the control knob to display YES confirm by pressing the control knob the instrument restart and all the parameters will be restored to factory values CALIBRATION AND RS485 PORT SETTING ACCESS LIMITATION Turn on the instrument and set the selector switch to NORMAL hold down the control knob for five seconds until the following is displayed Block No By working the control knob it is possible to select access allowed Yes access denied for unauthorised staff
13. ntrol knob Hold down the control knob for at least three seconds Onreleasing the control knob line two on the display will start flashing o Adjust the analog output value by working the control knob Hold down the control knob for at least three seconds releasing the knob control the first display line begins to flash again confirm the settings by adjusting the selector switch to NORMAL or change the values again by repeating the above described procedure steps Ensure that the weighing system is not loaded and perform the tare weight zero setting Example The weighing system uses four 1000 kg cells with 2 mV V sensitivity the 4 20mA analog output has been selected and you wish to have 20 mA at 2000 kg Considering that the instrument provides 5 Vde supply for the load cells the cell full scale value is equal to 2 mV V x 5 V 10 mV Additionally 2000 kg is equal to 50 of the system full scale 4 x 1000 kg 4000 kg therefore the values to enter are 50 of 10 mV 5 mV and 20 mA FILTER ON THE WEIGHT The instrument has a digital filler to reduce the effects of weight oscillation Set the DIP switch indicated by FILTER For an increased effect weight more stable increase the value of the response time DIP SWITCH Response time Display and serial port refresh i Hz OFF ON ON ON 400 5 5485 SERIAL CONNECTION The instrument transmits via RS485 serial port a
14. nts have reached a stable temperature Check that the display shows the mV value of the load cells and that when loading the load cells there is an increase in this value If this does not happen check the connections and correct positioning of the load cells TARE WEIGHT ZERO SETTING Set the three way selector switch to ZERO the red LED lights up 0 If the display reads BLOCK zero setting is not enabled The display shows the load cell reading in mV and the flashing zero value of the selected analog output 0 V 0 mA or 4 mA adjust the analog output value by working the knob control hold the knob control down until the display reads ZERO release the knob control and set the selector switch back to NORMAL Zero setting can also be obtained by referring to the values read by devices connected to the instrument such as the PC or PLC REAL CALIBRATION WITH SAMPLE WEIGHT Before carrying out the instrument real calibration the type of analog output must be selected and the tare weight zero setting must be performed Load onto the weighing system a sample weight which must be at least 50 of the full scale value set the three way selector switch to FS CAL the yellow LED lights up 0 If the display reads BLOCK calibration is not enabled The display shows the load cell reading in mV and the corresponding flashing value of the analog output adjust the analog output value by working the knob control hold the knob control down unt
15. r bracket as far as possible from the weighed structure at a distance at least 40 times the diameter of the pipe 1 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 4 x 1 sq mm minimum cross section WELDING Avoid welding with the load cells already installed If this cannot be avoided place the welder ground clamp close to the required welding point to prevent sending current through the load cell bogy WINDY CONDITIONS KNOCKS VIBRATIONS The use of weigh modules is strongly recommended for all load cells to compensate for misalignment of the support surfaces The system designer must ensure that the plant is protected against lateral shifting and tipping relating to shocks and vibration windy conditions seismic conditions in the installation setting stability of the support structure EARTHING THE WEIGHED STRUCTURE By means of a copper wire with suitable cross section connect the cell upper support plate with the lower support plate then connect all the lower plates to a single earthing system Electrostatic charges accumulated because of the product rubbing against the pipes and the weighed container walls are discharged to the ground witho
16. t 0 01 F S lt 0 01 F S TENA DRIFT ANALOG OUTPUT THERMAL lt 0 0005 Fe C lt 0 003 24 bit 16000000 points 200000 10 mV with sens 2 mV V CURRENT max 400 ohm ANALOG OUTPUT 0 20 mA 4 20 mA 16 bit 2 65535 divisions VOLTAGE min 2 kohm 0 10 V 0 5 V 10 10 V 5 5 V ELECTRICAL CONNECTIONS BASIC INFORMATION tis recommended that the power supply negative pole be grounded tis possible to supply up to eight 350 ohm load cells or sixteen 700 ohm load cells Connect terminal 0 VDC to the RS485 port common of the connected instruments in the event that these receive alternating current input or that they have an optoisolated RS485 port WIRING DIAGRAM 12 24 Vdc SUPPLY x ANALOG EM OUTPUT RS485 gt gt a 5 5 lt Current output max load 400 ohm output min load 2 kohm 17181920212223 PS 99999959 Ne LX X V mA E NORMAL L Jd GREEN X C YELLOW N m N X Oz TL MODIFY 4 QO and gt Q CONFIRM 000 LOAD CELLS IN PARALLEL 1 16 terminals MODE FILTER X gt lt X gt lt x x
17. tinet e 9 R9489 5 9 CONTINUOUS ONE WAY TRANSMISSION PROTOQCOL eere 9 MODBUS HTU PROTOCOL nated 9 11 RESERVED FOR THE INSTALLER 12 12 CALIBRATION AND RS485 PORT SETTING ACCESS 12 DECLARATION OF CONFORMITY C C nuu avarice 14 USER WARNINGS RECOMMENDATIONS FOR THE PROPER USE OF WEIGHING INSTRUMENT Keep away from heat sources and direct sunlight Repair the instrument from rain Donot wash with water jets Donot dip in water Do not spill liquid on the instrument Do not use solvents to clean the instrument Do install in areas subject to explosion hazard RECOMMENDATIONS FOR CORRECT INSTALLATION OF WEIGHING INSTRUMENTS The terminals indicated on the instrument s wiring diagram to be connected to earth must have the same potential as the weighed structure same earthing pit or earthing system If you are unable to ensure this condition connect with an earthing wire the terminals of the instrument including the terminal 0 VDC to the weig
18. ut going through or damaging the load cells Failure to implement a proper earthing system might not affect the operation of the weighing system this however does not rule out the possibility that the cells and connected instrument may become damaged in the future It is forbidden to ensure earthing system continuity by using metal parts contained in the weighed structure FAILURE TO FOLLOW THE INSTALLATION RECOMMENDATIONS WILL BE CONSIDERED A MISUSE OF THE EQUIPMENT 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 If so drain the system or replace it if necessary The value between the positive signal wire and the negative signal wire must be equal or similar to the one indicated in the load cell data sheet output resistance The value between the positive excitation wire and the negative excitation wire must be equal or similar to the one indicated in the load cell data sheet input resistance The insulation value between the shield and any other cell wire and between any other cell wir
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