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Transmitter WST 3

1. user Hebe Appendix 1 Quick set up list Operating instructions Quick installation Document no 35194 Article no 600 675 R5 Vishay Nobel AB 2011 05 11 Subject to changes without notice Vishay Nobel AB Box 423 SE 691 27 Karlskoga Sweden Phone 46 586 63000 Fax 46 586 63099 pw se vishaypg com www weighingsolutions com
2. displayed Rated load 2000 0 Press if the parameter value should be edited and make the editing like in point 6 on page 11 numeric parameter 12 Set the rated output for the transducers Rated output for each transducer a value in mV V is given in the data sheet For fixed support points the rated output should be set to 0 00000 Press to get the parameter Rated output 1 displayed Rated output 1 2 03900 mV V Press if the parameter value should be edited and make the editing like in point 6 on page 11 numeric parameter Parameters will follow for the number of support points given at 10 on page 13 Set the parameter value to the rated output for each transducer fixed support 13 Set the scale to zero This parameter displays the weight value with the actual settings but with one decimal more than what is set in Resolution Use it to set the weight value to zero Press to get parameter Set zero displayed and check that the scale is unloaded Set zero XXXX XXX kg Press ENTER to set the parameter value to zero Set zero RSI 30000 00 kg The value is set to zero with leading sign and a flashing cursor Press ENTER for 2 seconds Set zero 0000 000 kg 2 seconds The cursor disappears and the zero setting is accepted 14 Transmitter WST 3 14 Read the zero offset By installation of a replacement transmitter later it is useful to kn
3. a note of the parameter value in the Quick set up list appendix 1 17 Operating instructions Quick installation 12 Read the transducer signal for calibration point 2 read only Press to get parameter Transd sign p 2 displayed Transd sign p 2 dr X XXXXX mV V Make a note of the parameter value in the Quick set up list appendix 1 13 Set the scale to zero This parameter displays the weight value with actual settings but with one decimal more than what is set in Resolution Use it to set the weight value to zero for the unloaded scale Press to get parameter Set zero displayed and check that the scale is unloaded Set zero XXXX XXX kg Press ENTER to set the parameter value to zero oet zero EH 30000 00 kg The value is set to zero with leading sign and a flashing cursor Press ENTER for 2 seconds Set zero E 0000 000 kg 2 seconds The cursor disappears and the zero setting is accepted 14 Read the zero offset By possible installation of a replacement unit later it is useful to know the total zero offset value for the scale Press to get parameter Zero offset displayed Zero offset X XXX kg Make a note of the zero offset value in the Quick set up list appendix 1 18 Transmitter WST 3 15 Exit Quick set up Press ESCAPE to get to Main menu Exit set up Main menu Exit set up 16 Save the changes Before Quic
4. of common parameters described in point 1 8 on pages 9 12 should be performed 9 Set the value for calibration point 1 If the Deadweight alternative was chosen at 8 on page 12 next parameter will be Value cal p 1 This parameter defines the known load on the scale for the lower calibration point Press to get the parameter Value cal p 1 displayed Value cal p 1 X XX kg The displayed parameter value is the load on the scale that was set for the lower calibration point in the last calibration normally zero 7 unloaded scale Press ENTER Value cal p 1 XXXX XXX kg Actual measurement value for the scale is displayed as a live weight value with a cursor and one decimal more than what is set in parameter Resolution Check the load on the scale normally unloaded Press ENTER again to make editing possible Value cal p 1 0000 00 kg The displayed parameter value is the value for the lower calibration point from the last calibration with leading sign and a cursor The parameter value can be edited according to point 6 on page 11 numerical parameter to correspond to the actual load on the scale normally zero Press ENTER for 2 seconds Value cal p 1 xxx kg 2 seconds This finishes the editing and the load that is set for the lower calibration point is displayed without cursor 16 Transmitter WST 3 10 Set the value for calibration point 2 Thi
5. Dead weight calibration normally the most accurate calibration method where known weights are used to give well defined loads on the scale Before selection of calibration method the value of some common parameters must be set All parameter values from the calibration should be noted in the set up list see Appendix 1 These values are useful later if the transmitter must be replaced Common parameters These parameters define the language measurement unit and resolution used by the transmitter and also the capacity and signal type for the analogue output Set up 1 Access Quick set up At normal operation WST 3 displays the actual weight value Status for the internal relays R1 R2 in use and the transmitter Modbus address are also displayed 123 4 kg R1 1 R2 1 001 pe mu ES Press and hold the ESCAPE key for 2 seconds A Main menu Quick set up 2 seconds This switches the transmitter into Set up mode displaying the main menu for Quick set up As WST 3 is in Set up mode normal measuring functions are interrupted Operating instructions Quick installation 2 Showing the parameters Press ENTER Language English The first parameter in Quick set up will be displayed 3 Edit the language a choice parameter Language is a choice parameter with a number of alternatives available Press ENTER to make editing possible Language English A cursor starts flashing to the left on t
6. ER to make editing possible Capacity 500 00 kg A cursor starts flashing to the left on the parameter value line indicating which digit that can be edited Press ENTER to move the cursor step by step to the right in the parameter value to the digit to edit Capacity 00 00 kg Press or until the wanted digit value is displayed 1 in this example Capacity 0100 00 kg When necessary press ENTER again to move the cursor to another digit to edit Press ENTER for 2 seconds when the capacity parameter value is correct Capacity 100 00 kg repeated 2 seconds The cursor disappears and the edited parameter value becomes active 11 Operating instructions Quick installation 7 Edit the analogue output type The signal type for the analogue output is defined by parameter Ana output type that has a number of alternatives Press to get parameter Ana output type displayed Ana output type 4 20mA Press if the parameter should be edited and make the editing like in point 3 on page 10 8 Chose a calibration type Press to get the parameter Calibration type displayed Calibration type Data sheet The value points out which type of calibration that was performed last time Two calibration types can be chosen in Quick set up Data sheet and Deadweight As a new calibration shall be performed WST 3 must first be set for editing indicated b
7. If data sheet unit and measurement unit are equal the value should be 1 00000 Press to get the parameter Conv factor displayed Conv factor 9 80665 Press ENTER to make editing possible Conv factor 09 80665 A cursor starts flashing to the left on the parameter value line Now editing can be performed for each digit individually See point 6 on page 11 numeric parameter Press ENTER for 2 seconds when the conversion factor is set to a correct value Conv factor 9 80665 2 seconds Cursor and leading zeros disappear and the edited conversion factor will be active 10 Edit the number of transducers This parameter defines the total number of support points for the load including transducers and fixed supports Press to get the parameter Number of transd displayed Number of transd 3 Press if the parameter value should be edited and make the editing like in point 6 on page 11 numeric parameter t 13 Operating instructions Quick installation 11 Set the rated load for one transducer It is assumed that all transducers connected to the transmitter have the same rated load and impedance The rated load for one transducer expressed in the data sheet unit used to calculate the conversion factor see 9 on page 13 should be entered NOTE If the data sheet value is for instance 5 kN this parameter should be set to 5 000 N Press to get the parameter Rated load
8. Transmitter WST 3 From prog name W001A100 Operating instructions Quick installation VISHAY PRECISION 4 7 croup Contents Introduction Operating instruction General aaa Power supply Start up siria eere peo e gd Views in Operating mode TafIng uae te Ettore etate et Display of Gross Net Zero setting uoti eii etate etait Installation Mechanical installation Electrical installation Set up programme deltaCOM Quick set up calibration ief um Ent Common parameters Data sheet calibration Dead weight calibration Parameter survey Transmitter WST 3 Operating instructions Quick installation Introduction WST 3 is a high performance transmitter designed for industrial measuring by means of strain gauge transducers It can be used as a slave unit communicating with a network master PLC by Modbus or Profibus The network can be used for transmission of commands and measurement values and also for set up of the transmitter The compact transmitter is easy to install on a DIN rail or a flat surface This instruction includes the basic installation and quick set up required for correct measurement with the transmitter Additional installation and set up of more functions not covered by this description can also be pe
9. g SEE Zero offset 0 00 Conv factor 9 80665 SE rect of transdmyg ER Rated load 2000 NS Rated output 1 2 03900 mV V M SE Shown for Rated output 2 the entered number of pd 2 03900 mV V transducers 5 Rated output 3 2 03900 mV V Set zero 00123 40 kg SES Zero offset 0 00 kg The diagram shows the parameters in Quick set up and how the function keys are used to view the parameters 20 Transmitter WST 3 Quick set up list for WST 3 Address Eocation NOt8s arie lia i AE Aan A ee ie eee ee Programme name Ser MO cia Date utes Parameter Default Set up name value value Language English ssi illa Measurement unit kg ee Menelao Resolution Od 1 owewrahiexueue MINI erus Capacity D O D sel Rue pem IER ER DOR tases Ana output type A 2O0mA S See PR Calibration type Datasheet lt lt BAAN ie Conv factor 9 80665 j ile Lilia Number of transd ML aaa Gaia Rated load 2000 01 onustus E MENUREr ONSE Rated output 1 2 03900 a ia Rated output 2 203900 anelli Selen aruba Rated output 3 Z 03900 uus bM Nessuna Rated output 4 2 03900 alice dii alal Value cal p 1 QD dale ioni Value cal p 2 DOOD SAALSNSReleunMDTGL wundern Transd sign p 1 0 00000 usum see lesi har Transd sign p 2 1 60091 serene dle Zero offset 0 007
10. he parameter value line Press to step forwards to next alternative or press to step backwards to the previous alternative until the correct alternative is displayed si Language mn alternatives Press ENTER for 2 seconds to accept the displayed alternative Language English 2 seconds The cursor disappears and the displayed alternative is activated 4 Edit the measurement unit for the transmitter By this parameter the measurement unit for the measurement value is defined Press to get parameter Measurement unit displayed Measurement unit kg Press if the measurement unit should be edited and edit the value like in point 3 above 10 Transmitter WST 3 5 Edit the transmitter resolution With this parameter the number of decimals and the resolution of the last digit of the measurement value are defined This parameter influences all measurement values using the measurement unit Press to get parameter Resolution displayed Resolution OV kg Press if the resolution should be edited and make the editing like in point 3 on page 10 In the following examples resolution with two decimals is used 6 Edit the transmitter capacity numeric parameter This parameter defines the capacity of the transmitter i e the weight value that corresponds to full range at the analogue output Press to get the parameter Capacity displayed Capacity 500 00 kg Press ENT
11. ilable by parameter More views The upper line displays the actual weight value as net weight Net or gross weight The lower line displays the analogue output signal and the Modbus information area Level settings This view can be made available by parameter More views The upper line displays the switching level used by Level Setpoint 1 and the lower line displays the switching level used by Level Setpoint 2 Input signal This view can be made available by parameter More views The upper line displays the actual transducer input signal in mV V The lower line displays status for the used relays R1 R2 1 on or 0 off and the Modbus information area S N Progr This view can be made available by parameter More views The upper line displays the transmitter serial number and the lower line displays the name of the installed programme Profibus status This view is always available The upper line displays the Profibus address of the transmitter and the lower line contains status information for the Profibus communication Taring Taring means storing the actual gross weight as a tare value and switching WST 3 over to display of net weight The net weight is the difference between the gross weight and the tare value Taring of WST 3 is always possible as the weight value is valid Taring is performed as digital input IN1 terminal 15 is activated with 24 VDC The tare value is automatically set t
12. k set up is closed the new parameter values should be saved i e copied to a specific memory in the transmitter Alternatively the new values can be cancelled and all parameters will resume the values they had before Quick set up was started Press ENTER to get the sub menu displayed Save changes No Esc Yes pe ms Em Press if you do not wish to exit from the set up mode Press to answer Yes and save the new parameter values n Press to answer No and cancel the new parameter values In both cases Quick set up is finished The transmitter switches over to Operating mode displaying a measurement value that depends on the load and the valid parameter values 000 00 kg Rel NIE R2 Vl 001 m m E The scale is now ready for use 19 Operating instructions Quick installation Parameter survey Operating mode Start up Reset 123 4 kg Weight value 21 7 R2 1 001 for 2 seconds iEnter password i Shown only if i Wrong Correct Security lock is On Set up mode Quick set u Main menu Main menu Quick set up Exit set up S Language iSave changes Shown only if English i No Esc Yes any changes PRA r3 have been done A H E a eee anite g M t 4 eae d 500 0 kg au re O Data sheet Dead weight SE SE ag side ag EE Transd sign p l 0 00000 mV V au Transd sign p 2 m 1 66631 mV V t SEE Set zero 00123 40 k
13. ng 15 IN1 Gross Net evo 16 __ IN2 2 wire TXD TXD E RXD RXD COM Terminating resistor on separate terminals at the last unit on the line TXD TXD RXD RXD COM Terminating resistor on separate terminals at the last unit on the line Transmitter WST 3 should be connected to transducer s and power supply Then it is possible to perform a set up from the front panel or from a connected PC with Windows 95 98 2000 XP NT4 0 A diskette with the set up programme deltaCOM is included in the WST 3 delivery This diskette also contains instructions for connection and set up of the serial communication between the transmitter and the PC Through deltaCOM it is possible to find all modules communicating with the PC and to study and edit all set up parameters for these modules Transmitter WST 3 Quick set up calibration General Set up of all parameters in WST 3 can be performed from the control unit by serial communication using the programme deltaCOM Set up can also be performed from the transmitter front panel for example the Quick set up of certain parameters described in this section Calibration is essential to get correct measurement results Two calibration methods are available in the Quick set up Data sheet calibration for calibration when transducer data are available and the installation is free from disturbing mechanical forces
14. nsmitter are displayed for about five seconds Then WST 3 is automatically switched over into Operating mode If the transmitter is set for operator start up the text Press ENTER to start WST is displayed until the function key to the right is pressed and the transmitter enters Operating mode If an error occurs the start up halts and an error message is displayed Error codes and error corrections are described in the Technical Manual for WST 3 section 8 Troubleshooting As WST 3 enters in Operating mode the first view is a standard view It contains the measurement value status of the used relays R1 R2 1 on or 0 off and at the lower right corner an area with information about the Modbus communication In this area EXT means serial communication to an external display An address means that the transmitter is set for Modbus communication with a master unit and the address flashes as a message to the transmitter is received If the area is empty this means that the serial communication is not in use 123 4 kg R2 1 001 4 Figure 2 Front view of WST 3 in Operating mode A weight value and information about relay status and Modbus address is displayed Operating instructions Quick installation Views in Operating mode As WST 3 is in Operating mode the views Weight value and Profibus status are always available The remaining views can be set On or Off by parameters under Main menu General Function ke
15. o zero by zero setting of the WST 3 Display of Gross Net By weight display an area to the left of the weight value displays Net when the net weight is displayed If the area is empty the displayed weight is the gross weight Switching between display of net weight and gross weight takes place as digital input IN2 terminal 16 is activated with 24 VDC Operating instructions Quick installation Zero setting Minor correction of the zero setting can be performed during normal operation from the Zero setting view see page 4 But to perform a basic zero setting of the gross weight the normal operation must be interrupted and the following sequence carried out with WST 3 in set up mode This type of zero setting is a part of the calibration sequences but a separate zero setting may also be needed for example if the equipment on the scale has been changed influencing the weight Procedure for basic zero setting 1 Check that the scale is unloaded before performing the zero setting 2 Switch to set up mode by holding ESCAPE pressed for 2 seconds 3 Enter the valid password if this is demanded 4 The text Main menu Quick set up is displayed Press ENTER E 5 The first parameter name Language is displayed Press a number of times until Set zero is displayed The parameter value for Set zero is a live weight value 6 Press EH The parameter value is set to zero and a flashing c
16. ow the total zero offset value for the scale Press to get parameter Zero offset displayed Zero offset X XXX kg Make a note of the zero offset value in the Quick set up list appendix 1 15 Exit Quick set up Press ESCAPE to get to Main menu Exit set up Main menu Exit set up 16 Save the changes Before Quick set up is closed the new parameter values should be saved i e copied to a specific memory in the transmitter Alternatively the new values can be cancelled and all parameters will resume the values they had before Quick set up was started Press ENTER to get the sub menu displayed Save changes No Esc Yes z ps mu E Press if you do not wish to exit from the set up mode Press to answer Yes and save the new parameter values iti Press to answer No and cancel the new parameter values In both cases Quick set up is finished The transmitter switches over to Operating mode displaying a measurement value that depends on the load and the valid parameter values 000 00 kg R1 1 R221 DOT pe ms Em The scale is now ready for use 15 Operating instructions Quick installation Dead weight calibration This is the most accurate calibration type It requires that known weights to at least two thirds of the scale capacity are available Below a dead weight calibration in two points is described Before editing of these parameters is started set up
17. rformed For a complete transmitter description refer to publication 600 630 WST 3 Technical Manual This description deals with the following points Measurement by the WST 3 panel Quick installation Quick set up for WST 3 Data sheet calibration Deadweight calibration in two points Set up programme deltaCOM This description does NOT deal with the following points e Connection of relay output e Complete set up password filters etc e Adjustment of levels and relay functions e Adjustment of the analogue output e Using the Modbus and Profibus communication e Table calibration e Troubleshooting e Diagnostics Transducer Analogue output __ Relay outputs 0000 Modbus poe unit deltaCOM Yt HO Digital inputs WST 3 Profibus DP Control unit External display lt lt n Profibus 24 V DC Figure 1 All connections to WST 3 are made through terminal block or connector Transmitter WST 3 Operating instructions General This section describes the display and the function key operation when WST 3 is in normal Operating mode Power supply Power supply to the transmitter should not be turned off during week ends and over night Continuous power supply to electronics and transducers prevents moisture condensation in the units Start up As soon as power is connected to the transmitter start up is performed The text WST 3 the programme name and the serial number of the tra
18. s parameter defines the known load on the scale for the higher calibration point Press to get the parameter Value cal p 2 displayed Value cal p 2 500 00 kg The displayed parameter value is the load on the scale that was set for the higher calibration point in the last calibration Press ENTER Value cal p 2 d XXXX XXX kg Actual measurement value for the scale is displayed as a live weight value with a cursor and one decimal more than what is set in parameter Resolution Load the scale with known weights to at least two thirds of the scale capacity Press ENTER again to make editing possible Value cal p 2 0500 00 kg The displayed parameter value is the value for the higher calibration point from the last calibration with leading sign and a cursor The parameter value can be edited according to point 6 on page 11 numerical parameter to correspond to the actual load of known weights on the scale Press ENTER for 2 seconds Value cal p 2 Ee xx kg 2 seconds Editing is finished and the load that is set for the higher calibration point is displayed without cursor 11 Read the transducer signal for calibration point 1 read only By possible installation of a replacement unit later it is useful to know the values of the transducer signal for the two calibration points Press to get parameter Transd sign p 1 displayed Transd sign p 1 X XXXXX mV V Make
19. sducer Operating instructions Quick installation Power supply Terminals 17 18 The transmitter is powered by 24 V DC Rail mounted power supplies can be ordered from Nobel Weighing Systems Analogue output Terminals 24 25 The measurement value is presented at the analogue output as a current or voltage signal according to the choice in the set up Connect the cable shield to ground preferably to a ground terminal at the mounting rail Digital inputs Terminal 15 16 Connection of 24 VDC to the digital inputs causes Taring and Gross Net switching respectively Connect the cable shield to ground preferably to a ground terminal on the mounting rail Serial communication Terminals 19 23 The transmitter has a serial port for RS 485 on 2 wires or 4 wires with common earth COM If necessary a converter unit can be connected to adapt the interfaces The line must have 120 ohm terminating resistors at both ends At WST 3 they should be mounted on separate terminals and connected according to the diagrams Refer to manufacturer instructions for termination at the control unit PC or at a possible converter unit Connect the cable shield to ground preferably to a ground terminal at the mounting rail Set up programme deltaCOM 17 t 24 V DC hag _ 24V 0 V 24 pe 24 OUT OUT 24 V terminal 18 Tari
20. uld be handled with great care to achieve best measuring data Integrated transducer cables may not be shortened NOTE Transducer cables must be routed at least 200 mm away from 230 380 V 50 60 Hz power cables By cables with other frequencies or high power an even wider distance is preferable 4 wire connection should be used if the integrated transducer cable can be connected directly at WST 3 By 4 wire connection excitation and sense must be interconnected at the transmitter see diagram below The cable shield and terminal 5 should be connected to earth via the mounting rail 6 wire connection should be used if the integrated cable must be lengthened or if several transducers should be connected to the transmitter Connect the cable shield and terminal 5 to earth via the mounting rail In the diagram below connections are shown for the junction box SL 4 from Nobel Weighing Systems 4 wire connection Excitation 5 1 4 EXC uu 2 SENSE Excitation b 3 5 EXC 3 4 SENSE 5 SHIELD Ia L 6 _ SIGN Transducer Signal LZ SIGN dd b8 CAL Junction box SL 4 6 wire connection ene cu L1 EXC gt 2 SENSE o9 EXC Transducer LA SENSE L5 _ SHIELD 6 _ SIGN LZ _ SIGN Transducer a pS CAL Tran
21. ursor appears to the left on the lower line The zero setting can be cancelled by pressing 7 Press and hold for 2 seconds to confirm the new setting The cursor disappears and a live weight value is displayed 8 Press read and make a note of the Zero offset value in Appendix 1 The Zero offset value can be used for set up of a replacement unit 9 Press The display changes to Main menu Exit set up 10 Press EI The display changes to Save changes No Esc Yes Press 9 Esc if you do not wish to exit from the set up mode 11 Press No to cancel the change and return to the previous zero setting or Press Yes to save the new zero setting in WST 3 12 WST 3 restarts with the selected zero setting Transmitter WST 3 Installation Mechanical installation Each transmitter WST 3 contains several circuit boards built into a protective plastic housing which can be snap mounted on a 35 mm wide DIN rail or mounted on a flat surface by two 4 mm screws The transmitter should have at least 10 mm free space on each side Electrical installation For the electrical connections to the connector and terminal blocks of the transmitter shielded cables are needed except for the power supply All cables should be routed so that electromagnetic interference from power cables is avoided Cable connection is shown in the diagrams below Transducer input Terminals 1 7 8 Transducer connection sho
22. y a cursor at the parameter value Then one of the alternatives must be chosen and accepted If a new calibration shall be performed press ENTER to switch the transmitter into set up mode Calibration type pe E Bata sheet A cursor starts flashing to the left on the parameter value line Chose an alternative for the parameter like in point 3 on page 10 When is pressed for 2 seconds the chosen calibration type gets active and the calibration can start The choice of calibration type determines which parameters will follow For Data sheet se point 9 on page 13 For Deadweight se point 9 on page 16 12 Transmitter WST 3 Data sheet calibration This calibration type can be used when transducer data is available the load is evenly distributed on the support points and the weighing installation is not influenced by disturbing external forces Before editing of the following parameters is started set up of common parameters described in points 1 8 on pages 9 12 should be performed 9 Edit the conversion factor If the Data sheet alternative was chosen at 8 on page 12 next parameter will be Conv factor This parameter defines a constant by which a weight value expressed in the measurement unit should be multiplied to be expressed in the data sheet unit Default value for the parameter 9 80665 can be used when the data sheet unit is Newton N and the measurement unit is kg
23. ys and are used for selection among the available views and by swiftly pressing 9 WST 3 can always be switched to the Weight value view From any view WST 3 switches to Quick set up mode as the function key is pressed for 2 seconds Weight value normal view This view is always available It is the first view displayed after start up reset or set up mode The upper line displays the actual weight value as net weight Net or gross weight The lower line displays status for the used relays R1 R2 1 on or 0 off and an area for the Modbus address or information about the serial communication Zero setting This view is made available by parameter Zero function It displays the actual weight value as net weight Net or gross weight As gross weight is displayed it can be set to zero by the ENTER key i By zero setting of the gross weight the actual tare value is also set to zero Start up Reset Weight value Always On Zero setting Set On Off in Zero function Analogue output signal Set On Off in More views Level settings Set On Off in More views Input signal Set On Off in More views S N Progr Set On Off in More views Profibus DP Online Profibus status Always On Figure 3 WST 3 in Operating mode can always display Weight value and Profibus status Depending on the setting alternative views can also be displayed Transmitter WST 3 Analogue output This view can be made ava

Transmitter WST 3

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