Analogue Signal Transmitter AST3
Contents
1. Parameter name Language Measurement unit Resolution Capacity Ana output type Calibration type Conv factor Number of transd Rated load Rated output 1 Rated output 2 Rated output 3 Rated output 4 Value cal p 1 Value cal p 2 Transd sign p 1 Transd sign p 2 Zero offset Default value English kg 0 1 500 0 4 20mA Data sheet 9 80665 3 2000 0 2 03900 2 03900 2 03900 2 03900 0 0 500 0 0 00000 1 66631 0 00 Appendix 1 Quick set up list Operating instructions Quick installation Document no 35158 Article no 600 243 R11 O 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 com2. Press ENTER to set the parameter value to zero gt Set zero E 0000 00 kg The value is set to zero with leading sign and a cursor blinking Press ENTER for 2 seconds Set zero gt 0000 000 kg 2 seconds The cursor disappears and the zero setting is accepted 12 Analogue Signal Transmitter AST 3 14 Read the zero offset By installation later of a replacement instrument it is useful to know the total zero offset value for the scale Press to get parameter Zero offset displayed Zero offset T gt ES es kg Make a note of the zero offset value in the Ouick set up list appendix 1 15 Exit Quick set up Press ESCAPE to get to Main menu Exit set up Main menu 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 instrument 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 El el No Esc Tes e E Press if you do not wish to exit from the set up mode Press to answer Yes and save the new parameter values Press 7 to answer No and cancel the new parameter values In both cases Quick set up is finished and the instrument swi
3. Yes Press Esc if you do not wish to exit from the set up mode 11 Press 7 No to cancel the change and return to the previous zero setting or Press Yes to save the new zero setting in the instrument 12 AST 3P restarts with the selected zero setting Analogue Signal Transmitter AST 3 Installation Mechanical installation Each signal transmitter module AST 3 contains several circuit boards built into a protective plastic housing The module can be snap mounted on a 35 mm wide DIN rail or mounted on a flat surface by two 4 mm screws Mounted modules should have at least 10 mm free space on each side Electrical installation For the electrical connections to the terminal blocks 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 should be handled with great care to achieve good 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 AST 3 By 4 wire connection excitation and sense must be interconnected a
4. the instrument 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 11 should be entered NOTE Ifthe data sheet value is for instance 5 kN this parameter should be set to 5 000 N Press to get the parameter Rated load displayed Rated load 1 j 2000 0 Press if the parameter value should be edited and make the editing like in point 6 on page 9 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 cutput 1 v gt 2 03900 mV V Press ES if the parameter value should be edited and make the editing like in point 6 on page 9 numeric parameter Parameters will follow for the number of support points given at 10 on page 11 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 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 a XXXX XXX kg
5. Analogue Signal Transmitter AST3 From prog name A001A140 Operating instructions Quick installation VISHAY PRECISION 07 croup Operating instructions Quick operation Contents Introduction hole 1 Operating instruction Generali 2 Power Supply unse 2 A ee 2 View alternatives nenn 3 Zero setting sine 4 Installation Mechanical installation ee ee ee 5 Electrical installation ee ee 5 Set up programme deltaCOM 6 Quick set up calibration General 7 Common parameters i 7 Data sheet calibration gt 11 Dead weight calibration r ee ee 14 Parameter survey oe AEE EEA E E 18 Analogue Signal Transmitter AST 3 Introduction AST 3 is a high performance transmitter designed for industrial measuring by means of strain gauge transducers The compact module is easily installed on a DIN rail or a flat surface Two slightly different versions of the transmitter module are available AST 3B designed for operation together with a control unit Instructions for installation and set up are found on a diskette delivered with the transmitter module AST 3P with display window and function keys for set up and measuring operations This instruction includes the basic installation and set up required for correct measuring with the instrument Additional installation and set up of more instrum
6. alogue output Terminals 24 25 The measurement value is presented as a current or voltage signal according to set up selection Connect the cable shield to ground preferably to a ground terminal at the mounting rail Serial communication Terminals 19 23 Set up by serial communication is needed to take AST 8B into operation All AST 3 have a serial port for RS 485 on 2 wires or 4 wires with common earth COM If necessary a converter unit should be connected to adapt the interfaces The line must have 120 ohm termination at both ends For AST 3 it 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 the converter unit Connect the cable shield to ground preferably to a ground terminal at the mounting rail Set up programme deltaCOM 2 15 UNA mm Hi L n2 te 24 OUT 2 wire 19 TXD 1200 20 TXD li 21 RXD 22 RXD 123 com Terminating resistor on separate terminals at the last unit on the line 4 wire ol 9 t TXD cene 20 TXD EL t RXD eb 722 RXD _ 23 com Terminating resistor on separate terminals at the last unit on the line AST 3B must be connected to transducer s and power supply and also to a PC with Windows 95 98 2000 XP NT4 0 to make set up
7. alue cal p 1 Lt0000 00 kg The displayed parameter value is the value for calibration point 1 from the last calibration with leading sign and a cursor The parameter value can be edited according to point 6 on page 9 numerical parameter to correspond to the actual load on the scale normally zero Press ENTER for 2 seconds Value cal p l gt X XX kg 2 seconds j di This finishes the editing and the load that is set for the lower calibration point is displayed without cursor 14 Analogue Signal Transmitter AST 3 10 Set the value for calibration point 2 This parameter defines the known load on the scale in the higher calibration point Press to get the parameter Value cal p 2 displayed Capacity EJ gt 1500 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 ES gt loc 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 Di2 EI gt 0500 00 kg The displayed parameter value is the value for calibration point 2 from the last calibration with leading sign and a c
8. alue to zero Set zero ES 0000 00 kg The value is set to zero with leading sign and a cursor blinking Press ENTER for 2 seconds Set zero gt 0000 000 kg 2 seconds The cursor disappears and the zero setting is accepted 14 Read the zero offset By installation later of a replacement instrument it is useful to know the total zero offset value for the scale Press to get parameter Zero offset displayed Zero offset i gt IX 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 Analogue Signal Transmitter AST 3 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 instrument 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 EE Save changes gt No Esc Yes a 4 Press if you do not wish to exit from the set up mode Press to answer Yes and save the new parameter values Press 7 to answer No and cancel the new parameter values In both cases Quick set up is finished and the instrument switches over to Operating mode displa
9. bled see previous page but that zero setting is only temporary To perform a zero setting saved in the instrument memory the normal operation must be interrupted and the following sequence in set up mode carried out This type of zero setting is included in the calibration sequences but a separate zero setting may also be needed for example if the equipment on the scale has been changea influencing the weight Procedure 1 Check that the scale is unloaded before performing the zero setting Switch to set up mode by holding ESCAPE pressed for 2 seconds Enter the valid password if this is demanded a ds The text Main menu Quick set up is displayed Press ENTER __ 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 The parameter value is set to zero and a blinking cursor appears to the left on the second 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 instrument 9 Press The display changes to Main menu Exit set up 10 Press The display changes to Save changes No Esc
10. e instrument i e the weight value that corresponas to full range at the analogue output Press to get the parameter Capacity displayed gt Capacity 500 00 kg Press ENTER to make editing possible Capacity mo ys A cursor starts blinking to the left on the parameter value line indicating which sign or 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 ES 0500 00 kg Press or until the wanted digit value is displayed 1 in this example repeated gt wi 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 2 seconds The cursor disappears and the edited parameter value becomes active 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 na 4 20mA Press if the parameter should be edited and make the editing like in point 3 on page 8 8 Chose a calibration type Two calibration types can be chosen in Quick set up Data sheet and Deadweight As a new calibra
11. ent functions not covered by this description can also be performed For a complete instrument description refer to publication 600 232 AST 3 Technical Manual This description deals with the following points Using the AST 3P panel for measuring Quick installation Quick set up for AST 3P Data sheet calibration Deadweight calibration in two points Installation of deltaCOM This description does NOT deal with the following points Connection of relay output Complete set up password filters etc Adjustment of levels and relay functions Adjustment of the analogue output Setting of communication parameters Table calibration Troubleshooting Diagnostics lt gt gt H gt gt Control unit deltaCOM AST 3P AST 3B Transducer Transducer t f 24V DC 24 VDC Figure 1 Different versions need different installation for parameter set up Operating instructions Quick installation Operating instructions General This section describes display and function key operation for AST 3P in normal Operating mode Power supply Power supply to the signal 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 instrument start up is performed The text AST 3 the programme name and the serial number of the m
12. iew is only temporary After power off or reset it will be replaced by the zero setting from the latest calibration Analogue output This view displays the weight value and the address and also the actual analogue output signal Level settings This view displays the switching levels for the two supervising channels If these channels are not in use level 0 is displayed Input signal This view displays the actual input signal from the connected transducer s The instrument address and status for the used relays are also displayed S N Progr This view displays the instrument serial number and the name of the installed programme Start up Reset Normal view Sere Er a 123 4 kg 001 Weight value R1 0n R2 0n View alternatives i Zero setting Y 123 4 kg 001 Set On Off in Zero function i Analogue output signal Set On Off in More views a ES wi Level settings Ll 99999 9 kg Set On Off in More views i L2 0 0 kg Input signal 0 18200mV V 001 Set On Off in More views i R1 0n R2 On E S N Progr S N XX XXKK Set On Off in More views Progr XXXXXXXX Figure 3 AST 3 in Operating mode can always display the weight value Depending on the setting display of alternative views can be selected by keys and Operating instructions Quick installation Zero setting Zero setting in normal operation can be performed if the Zero setting view is ena
13. make editing possible Language gt English A cursor starts blinking to the left on the 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 Language gt alternatives Press ENTER for 2 seconds to accept the displayed alternative Language gt English 2 seconds The cursor disappears and the displayed alternative is activated 4 Edit the measurement unit for the instrument By this parameter the unit of the measurement value is defined Press to get parameter Measurement unit displayed Measurement unit sd _ gt KY Press if the measurement unit should be edited and edit the value like in point 3 above Analogue Signal Transmitter AST 3 5 Edit the instrument 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 pi 0 1 kg Press if the resolution should be edited and make the editing like in point 3 on page 8 In the following examples resolution with two decimals is used 6 Edit the instrument capacity numeric parameter This parameter defines the capacity of th
14. odule are displayed for about five seconds Then AST 3P is automatically switched over in Operation mode If the instrument is set for operator start up the text Press ENTER to start AST is displayed until the key to the right is pressed and the instrument enters Operating mode If an error occurs the start up stops and an error message is displayed Error codes and error corrections are described in section 7 Troubleshooting in the Technical Manual for AST 3 As AST 3 is in Operating mode a view with the weight value and the instrument address is displayed For the internal relays in use the status is displayed R1 R2 On or Off CE 123 4 kg 001 R1 On R2 On CA Figure 2 Front view of AST 3P in Operating mode A weight value and information about address and relay status being displayed Analogue Signal Transmitter AST 3 View alternatives AST 3P set up may allow display of more views than Weight value In that case the function keys and are used according to figure 3 to select a view Weight value normal view This view displays the actual measurement value here called weight value and the instrument address For the relays in use the status On or Off is displayed Zero setting This view displays the weight value and the address and on the second line the text Zero above the key Zeroing of the weight value is performed as is pressed The zeroing performed in this v
15. om disturbing mechanical forces 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 instrument 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 instrument must be replaced Common parameters These parameters are defining the language measurement unit and resolution for the instrument and also the capacity and signal type for the analogue output Set up 1 Access Quick set up At normal operation AST 3P displays the actual measurement value and the module address Status for the internal relays R1 R2 in use is also displayed 123 4 kg 001 R1 0n R2 0n IR Press and hold the ESCAPE key for 2 seconds Main menu uh gt Quick set up 2 seconds This switches the instrument into Set up mode displaying the main menu for Quick set up As AST 3 is in Set up mode normal measuring functions are interrupted Operating instructions Quick installation 2 Showing the parameters Press ENTER Language gt 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
16. 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 If data sheet unit and measurement unit are equal the value should be 1 00000 Press to get the parameter Conv factor displayed onv factor gt 119 80665 Press ENTER to make editing possible Conv factor gt 09 80665 A cursor starts blinking to the left on the parameter value line Now editing can be performed for each digit individually See point 6 on page 9 numeric parameter Press ENTER for 2 seconds when the conversion factor is set to a correct value Conv factor gt 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 f i of transd Press E i if the parameter value should be edited and make the editing like in point 6 on page 9 numeric parameter 11 Operating instructions Quick installation 11 Set the rated load for one transducer It is assumed that all transducers connected to
17. possible Included in the AST 3 delivery is a diskette with the set up programme deltaCOM This diskette also contains instructions for connection and set up of the serial communication between the instrument and the PC To install the programme insert the diskette in the computer press the Start button and select Run from the menu type drive letter setup in the dialogue box and then follow instructions on the screen If nothing else is stated the programme deltaCOM and a ReadMe file will be found in Start gt Program gt deltaCOM By use of deltaCOM it is possible to find all AST 3 modules communicating with the PC and to study and edit all set up parameters for these modules Analogue Signal Transmitter AST 3 Quick set up calibration General Set up of all parameters in AST 3 can be performed from the programme deltaCOM by serial communication For AST 3P set up can also be performed from the panel of the module for example the Quick set up of certain parameters described in this section To make a similar set up for AST 3B the Quick set up parameters can be selected from the tabs General Analogue output and Calibration in deltaCOM Calibration is essential for the instrument to give correct measurement results Two calibration methods are available in the Quick set up Data sheet calibration for calibration when load cell data is available and the installation is free fr
18. t AST 3 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 one AST 3 unit 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 K hi 4 EXC mM 2 __ SENSE Excitation 7 L3 E EXC La SENSE 5 SHIELD 1 6 SIGN Transducer p e 1 SIGN 4 8 Ar Junction box SL 4 6 wire connection Exc 411 i J101 E 1 EXC Sign 1412 Tr 2 Exc J13 p 2 lt SENSE Sign J14 3103 03 EXC Transducer JI J104 LA SENSE Exc J21 05 SHIELD Sign 422 J106 6 _ SIGN Exe 28 3108 67 4 SIGN ign J T Transducer J2 sis Ali pS HAL J58 J59 J107 Exc 431 TORO Sign 1432 CAL 310 Exc 133 Sign J J34 Transducer 43 J41 J42 J43 J44 Operating instructions Quick installation Power supply Terminals 17 18 The AST 3 module is powered by 24 V DC Rail mounted power supplies can be ordered from Nobel Weighing Systems An
19. tches over to Operating mode displaying a measurement value that depends on the load and the active parameter values 000 00 kg 001 R1 0n R2 ON ES ES The scale is now ready for use 13 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 of common parameters described in point 1 8 on pages 7 10 should be performed 9 Set the value for calibration point 1 If the Deadweight alternative was selected at 8 on page 10 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 l gt X XX kg f The displayed parameter value is the load on the scale that was set for the lower calibration point in the last calibration normally zero unloaded scale Press ENTER Value cal p l ES 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 V
20. tion shall be performed AST 3P must first be set for editing indicated by a cursor at the parameter value Then one of the alternatives must be chosen and accepted Press to get the parameter Calibration type displayed Calibration type Data sheet Ed gt The value points out which type of calibration that was performed last time If anew calibration shall be performed press ENTER to set the instrument for editing Calibration type ES Data sheet A cursor starts blinking to the left on the parameter value line Chose an alternative for the parameter like in point 3 on page 8 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 11 For Deadweight se point 9 on page 14 10 Analogue Signal Transmitter AST 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 point 1 8 on pages 7 10 should be performed 9 Edit the conversion factor If the Data sheet alternative was selected at 8 on page 10 next parameter will be Conv factor This
21. ursor The parameter value can be edited according to point 6 on page 9 numerical parameter to correspond to the actual load of known weights on the scale Press ENTER for 2 seconds Value cal p 2 A XXX 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 installation later of a replacement instrument it is useful to know the value of the transducer signals for the two calibration points Press to get parameter Transd sign p 1 displayed Transd sign p 1 X XXXXX mV V E Make a note of the parameter value in the Quick set up list appendix 1 15 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 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 SE gt XXXX XXX kg Press ENTER to set the parameter v
22. ying a measurement value that depends on the load and the active parameter values 000 00 kg 0011 R1 0n B2 0n EE The scale is now ready for use 17 Operating instructions Quick installation Parameter survey 18 transducers Operating mode Start up Reset Weight value R1 On R2 On 123 4 kg 001 for 2 seconds Enter password Wrong Correct le Set up mode Quick set up Calibration type Data sheet Conv factor 9 80665 Ed of transdig Rated load 2000 0 Rated output 1 2 03900 mV V Rated output 2 12 03900 mV V S Shown for the entered number of output 4 p mV V B Set zero 00123 40 kg Zero offset 0 00 kg u eadweight au Value cal p l 0 0 500 0 SE Transd sign p l 0 00000 mV V ay Transd sign p 2 1 66631 mV V a e 0 S kg SE Value cal p 2 kg t zero 0123 40 kg one Zero offset 0 00 kg Shown only if Security lock is On z Esc Resolution 1 0 1 kg as Capacity 500 0 kg OR Ana output typg 4 20mA SE Calibration type The diagram shows the parameters in Quick set up and how the function keys are used to view the parameters Shown only if any changes have been done Analogue Signal Transmitter AST 3 Quick set up list for AST 3 Address Kalotia O ES e ini iaia Programme name
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