Load Cell Tester LCT 1006 User Manual 1.2
Contents
1. 0 a a Screw Terminal Board 25 pin Sub D Model J1 PT RXD 3 gt TXD 2 Basanan gt GND 7 RS 232 connection with Cable A using the J1 PT Screw Terminal Board PC Connector 9 pin Sub D ig PD TXD 3 5 XD m RXD 2 z eD GND 5 25 pin Sub D i L xp 2 Senn Pm RXD 3 RS 232 connection using a dedicated 25 to 9 or 25 to 25 pin cable aia aaa Pm GND 7 422. Instrument to be calibrated Signal Signal Excitation Sense Excitation if Sense The Load Cell Tester receives the excitation voltage from the weighing instrument and gives to it a calibrated mV V signal accuracy 0 033 in order to check the linearity and or perform the Zero and Full Scale calibration The CALIBRATOR mode disables the Load Cell Tester function More details on page 21 USING THE LOAD CELL TESTER IN CALIBRATOR MODE WITH J2 CB BOARD Signal Signal Sense Sense Excitation Excitation Instrument to be calibrated The J2 CB Calibration Board supplied with cable B provides another method of connecting to the weight indicator when using the load cell tester in Calibrator mode See above illustration for wiring connections INSTRUMENT SIDE oe oe soe LC TESTER SIDE OHOOOOD Exc Exc Sns Sns Sig Sig CGS4 C and CEM4 C SUMMING JUNCTION BOXES The CGS4 C and CEM4 C summing junction boxes are equipped with a 25 pin Sub D connector which provides a quick reliable connection to the Model 1006 LC System Tester with standard Cable A Board Dimensions mm T i eer Box Di
3. Enter Confirm Activates the function and exits the menu 25 Once the CONFIGURATION FILES function has been activated the following selections are automatically added to the WEIGHING PARAMETERS menu Configuration Files Stored mV V Signals Therefore the last part of the WEIGHING PARAMETERS menu will appear as follows WEIGHING PARAMETERS NOTE Load Cell Capacity a Access to the WEIGHING PARAMETERS menu is performed p by pressing the ENTER key as described on page 15 of this LC Sensitivity Values Manual Display Division Value A Configuration Files N Stored mV V Signals Aa Accessing the CONFIGURATION FILES menu WEIGHING PARAMETERS Load Cell Capacity o LC Sensitivity Values Use the arrow up down keys to highlight the i S Configuration Files selection then press Display Division Value the arrow right to access the menu Configuration Files Stored mV V Signals CONFIGURATION FILES Open Delete Send and Receive Files 26 Saving the weighing parameters in a file CONFIGURATION FILES Open Delete Send and Receive Files The Save function is used to store all the data previously programmed in the WEIGHING PARAMETERS menu in a file using one of the following methods 1 Save the data into an existing file 2 Save the data into a new file Saving data to an existing file Existing File List Enter File Name
4. ABCDEFGH CFG12 CFG13 TXKBGFRY 1234ABCD ma The O O keys scroll UP and DOWN the list of existing files The D key access the selected file The key quits the menu step by step until normal operating mode is resumed Save data in the File O Q Select Enter Confirm Exits the menu and saves the data Exits the menu without saving the Normal operating mode is automatically resumed data Display returns to Save menu 27 2 Saving data in a new file Creating a new file From previous page Entering the file name The following grid appears on the display The letter A is highlighted Enter File name KEY FUNCTIONS The 0 O keys allow to move the cursor to any direction and also to pass from one to the other side of the grid without the need to scroll all the characters of the line column see the pictures here below Short pressure Enters the selected character and allows the selection for the next one Enter The character just entered will appear in the NAME field When the last character the 8th is entered the Enter key causes the storage of all the weighing parameters into the file just created Long pressure Stores the weighing
5. File CFG13 File CFG13 e e a T URE v 58 EE rv 5920 ee eS Se UU in 4 95 GW Okg Ih in 4 95 ew 600 kg a So Press C key to exit Press C key to exit The LC Tester generates 0 304 mV V The LC Tester generates 1 200 mV V This signal is used to perform the zero This signal is used to perform the span calibration of the weighing indicator calibration 600 kgs of the weighing indicator NOTE In this particular function the LC Tester is able to generate the Zero and Span mV V values only Press the C key in order to resume normal operation in CALIBRATOR mode 41 RS 232 CONNECTIONS The bi directional RS 232 communication allows transferring the Configuration Files from the load cell tester to a computer and vice versa The female 25 pin Sub D connector installed on the LC Tester includes terminals for the RS 232 connection LC Tester 25 pin Sub D 2 GND connector pinout 5 TXD 18 RXD The RS 232 connection to the PC can be established using either Cable A and the J1 PT Screw Terminal Board same equipment used for testing the load cells as shown on page 7 or with a dedicated 25 to 9 pin or 25 to 25 cable not supplied 7 SGND 6 TXD 5 RXD 1234567 A PC Connector 9 pin Sub D N SGND 5 TXD 18 RXD 28 29 14 J15 wm RXD 2 amp TXD 3 GND 5
6. 4 Receive File File transfer completed 35 2 Sending all the files to a PC From previous page CONFIGURATION FILES Send Current File Send all Files Receive File Send all Files Confirm O OQO Select Enter Confirm CONFIGURATION FILES CONFIGURATION FILES Send Current File Files transfer in progress Send all Files Please wait Receive File v Files transfer completed 36 3 Receiving a Configuration File from a PC From previous page CONFIGURATION FILES Send Current File Send all Files Receive File 6 Receive File Activate O OQO Select Enter Confirm CONFIGURATION FILES Receiving File Please wait CONFIGURATION FILES CONFIGURATION FILES File CFG13 received Sera a Send all Files Receive File NOTE Receiving a configuration file does not mean to make it operative The file just received is added to the list of existing files however the LC Tester will continue normal operation 37 STORING THE mV V LOAD CELL SIGNALS This function is used to save the individual zero and span mV V signals coming from the load cells into the instruments memory Both the Zero and Span values can be saved by Zero we mean the mV V values coming from the load cells when the weighing system is unloaded by Span we mean the mV V values corresponding to a known weight appl
7. and Signal of each single load cell The 2 terminals with 5 pin must be used for connecting and Excitation Each single wire must be plugged into its own terminal An adhesive sticker on each terminal identifies Number of the load cell 1 2 3 4 Type of wire Signal or Excitation Polarity of each single connection Follow the steps A B and C to perform the connections A B C opening closing Load cells CONNECTION OF LOAD CELLS TO THE SPRING TERMINALS Nrof LC Type of wire Terminal mark Pin Wire color code cable B 1 Signal SIG CELLA 1 3 Green Signal SIG CELLA 1 3 White 2 Signal SIG CELLA 2 3 Blue Signal SIG CELLA 2 3 Brown 3 Signal SIG CELLA 3 3 Yellow Signal SIG CELLA 3 3 Grey 4 Signal SIG CELLA 4 3 Pink Signal SIG CELLA 4 3 Violet 1 2 3 4 Excitation EXC 5 Red Excitation EXC 5 Black USING THE LOAD CELL TESTER IN CALIBRATOR MODE WITH J1 PT BOARD The Ji PT Terminal Board supplied with cable A includes terminals for connecting directly to the weight indicator when using the load cell tester in Calibrator mode The following table shows which pins to use 1 SIGNAL 2 SIGNAL 3 EXCITATION 4 EXCITATION
8. Fine decrement of the mV V output signal in CALIBRATOR mode see page 21 Switch off 11 KEY FUNCTIONS WITHIN THE VARIOUS MENUS Data Selection from a list 4 E D They take meaning of Arrow up and Arrow down They allow to select the previous next parameter from a list of parameters proposed by O E the instrument Sometimes the selection of a certain parameter is performed with these keys instead of with the Arrow up down keys p The symbols and appear on the display to inform the Operator Takes meaning of Arrow right Allows to access the parameter previously selected with Arrow up down keys _ Takes meaning of Arrow left ec Exits the menu without saving the changes Enter Exits the menu after saving the changes Entering Numerical Data Keys 0 to 9 are used to program all those parameters requiring numerical values such as the load cell capacity etc This key performs 2 functions 1 Used to insert a decimal point in numerical values 2 Used to erase the data Press momentarily to erase the last digit Press slightly longer to erase all of the data Enter Confirm and quit the settings 12 POWER ON SEQUENCE When powering on the LC Tester the following parameters must be programmed Number of load cells Load cells Impedance Power ON fo gt LC System Tester The firmware code and the release number appear on the display Firmware PMT401 fo
9. Test Press Cal gt Transducer Simulator Output Signal EEY mv 7 920 Vin 4 95 Gw 800 kg SEE 80 Through this function the LC Tester acts as a mV generator therefore it can be used as a load cell simulator and or calibrator for electronic weighing instruments to check linearity to check 0 and FS to perform 0 and FS calibration Refer to page 9 for wiring Displayed data mV V signal generated by the LC Tester and sent to the instrument ey The O and keys allow to generate the signal output in steps of 0 1 mV V over a range from 0 to FS The mV V Full Scale value corresponds to the average of the individual mV V load cell sensitivities programmed in the WEIGHING PARAMETERS menu See page 16 Vin 4 95 Load cells excitation voltage coming from the instrumentation mv 7 920 mV signal generated by the LC Tester and sent to the instrument 7 920 This value is the product of mV V multiplied by Vin Weight value corresponding to the mV V signal generated by the LC Tester PL 900 kg The weight value is expressed in the preselected measurement unit and its Full Scale is the product of Single LC capacity multiplied by Number of LC s programmed in the WEIGHING PARAMETERS menu T E 80 Percentage of signal output referred to the Full Scale In order for the CALIBRATOR function to work correctly the following parameters Number of LC s LC s sens
10. V 2 0000 mV V 2 0000 mV V LC Sensitivity Values mV V o 2 0067 Setting the nominal sensitivity of LC 2 WEIGHING PARAMETERS Number of LC s Unit of Measurement Load Cell Capacity LC Sensitivity Values 6 5 gt Selection of the Display division value Display Division Value 0 1 The Display division value can be selected from a list 0 001 to 100 expressed in the measurement unit previously enabled The LC Tester automatically offers a value optimised to 10000 counts based on the nominal capacity of the load cells sum Selection Confirm of the load cell s single capacities Example Single LC capacity 250 Enter Number of load cells 4 LC s Total capacity 250 x 4 1000 The Display division value automatically offered by the LC Tester will be 0 1 given by the ratio LC s Total capacity 1000 0 1 10000 10000 However the User has the chance to modify this value or bearing in mind that the maximum number of counts can be 50000 Considering the example given here above the ratio LC s Total capacity 50000 equals 0 02 This will be the minimum usable Display division value WEIGHING PARAMETERS Number of LC s Unit of Measurement to Operating Mode os Load Cell Capacity i LC Sensitivity Values Display Division Value 17 ADDITIONAL FUNCTIONS In Operating Mode Press Enter and hold D Automatic shut off
11. HIELD If the existing installation is equipped with model CGS4 C or model CEM4 C summing junction board only connect Cable A directly to the 25 pin Sub D connector on the board without using the J1 PT Board Connection using Cable A to CGS4 C 31 PT Board L C 1 AAAA L C 2 LE A LC s Tester side m 9 5 e ojololo L C 3 Connection using Cable A to CEM4 C gt g J1 PT Board DID O P Q L lololo LC s Tester side PPP oloo CONNECTION TO THE LOAD CELLS with Cable B Cable B is equipped with spring terminals and is available as an OPTION The cable B represents a universal connection system no matter which type of junction box the LC s are normally connected to The cables of the load cells must be disconnected from their terminals and connected to the spring terminals of the cable B according to the wiring shown here below Cable B is equipped with 10 spring terminals eight with 3 pin and two with 5 pin all the pins on each terminal are short circuited The 8 terminals with 3 pin must be used for connecting
12. Model LCT 1006 Vishay Nobel Load Cell Tester For the simultaneous monitoring of 4 load cells in weighing systems Calibrator and mV generator for instrumentation USER MANUAL Firmware PMT401 Release nr 1 2 CONTENTS INSTRUMENT S FEATURES TECHNICAL SPECIFICATIONS Page 3 POWER SUPPLY AND BATTERY REPLACEMENT Page 4 MAIN PERFORMANCES Page 5 SWITCHING BETWEEN LOAD CELL TESTER AND CALIBRATOR MODES Page 6 CONNECTIONS CONNECTION TO THE LOAD CELLS with Cable A Page 7 CONNECTION TO THE LOAD CELLS with Cable B Page 8 USING THE LOAD CELL TESTER IN CALIBRATOR MODE WITH J1 PT BOARD Page 9 USING THE LOAD CELL TESTER IN CALIBRATOR MODE WITH J2 CB BOARD Page 9 CGS4 C and CEM4 C SUMMING JUNCTION BOXES Page 10 THE USE OF THE INSTRUMENT KEY FUNCTIONS IN OPERATING MODE Page 11 KEY FUNCTIONS WITHIN THE VARIOUS MENUS Page 12 POWER ON SEQUENCE Page 13 OPERATING MODE DATA VISUALIZATION Page 14 WEIGHING PARAMETERS MENU Page 15 ADDITIONAL FUNCTIONS Page 18 DISPLAY INTENSITY ADJUSTMENT Page 20 THE CALIBRATOR FUNCTION Page 21 ACCESSORIES OPTIONS AND SPARE PARTS Page 23 APPENDIX A CONFIGURATION FILES MANAGEMENT Page 25 ACCESSING THE CONFIGURATION FILES MENU Page 26 SAVING A FILE Page 27 OPENING A FILE Page 30 DELETING ONE FILE ALL FILES Page 32 TRANSFERRING ONE FILE ALL FILES Page 35 STORING THE mV V LOAD CELLS SIGNALS Page 38 STORED mV V LOAD CELLS SIGNALS VISUALISATION Page 40 GENERATING THE
13. STORED mV V LOAD CELLS SIGNALS Page 41 TECHNICAL SPECIFICATIONS Instrument power supply 4 x 1 5 V alkaline disposable batteries AA size or 4 x 1 2 V Ni MH rechargeable batteries AA size Current consumption Min 125 mA Max 190 mA Battery life About 4 hours with disposable batteries About 8 hours with Ni MH batteries 2000 mAh Operating temperature 14 F to 122 F 10 C to 50 C Storage temperature 4 F to 158 F 20 C to 70 C Display Graphic 3 Keyboard 16 keys On Off switch Overall dimensions 8 66 x 4 60 x 2 00 in 220 x 117 x 51 mm Hx Wx D Weight Approximately 1 1 Ibs 500 Grams Enclosure Polyamide UL94 V2 Protection degree front IP 54 Connection to load cells With Cable A std or Cable B option A type 6 foot 2 m cable with 25 pin Sub D connectors B type 10 foot 3 m cable with spring terminal connectors Load cells excitation voltage 5 Vdc 60 mA 4 x 350 Q load cells max 4 individual load cell channels with the following specs Linearity lt 0 01 of Full Scale Internal resolution 24 bit Displayed weight resolution Up to 50 000 counts Input signal range 3 9 mV V to 3 9 mV V Decimal digits Up to 3 Accuracy of the mV V signal generated in Calibrator mode 0 033 of Full Scale 1 3000 LC s excitation volt
14. V equivalent to a signal increment of 1 2 mV V 600 kg Transducer Simulator ik Transducer Simulator ik Output Signal Output Signal mV V 0 400 mV V 1 600 mv _ 7 920 0 calibration on the instrument F S calibration on the instrument Weight reading 0 Weight reading 600 Note When the O key is pressed the box containing the weight value switches from GW to NW Press the C key to switch from NW to GW GW Gross Weight NW Net Weight 22 ACCESSORIES OPTIONS AND SPARE PARTS Cable A 2m long with two 25 pin connectors Cable B 3m long with spring terminals D 4 Product Code 1006 A Product Code 1006 B Screw Terminal Board Spring Terminal Calibration Board Model J1 PT Model J2 CB Product Code 1006 PT Product Code 1006 CB Summing Junction Box Model CGS4 C Summing Junction Box Model CEM4 C Product Code 1006 CGS Product Code 1006 CEM Software program for saving the Configuration Files Special software program allows saving all the weighing parameters for up to 100 different systems These files can be stored directly inside of the load cel
15. age input range Min 3 Vdc Max 15 Vdc mV signal output range Min 3 0 mV Max 20 3 mV Load cells impedance 350 700 Q selection or min 300 to max 2000 Q setting Standard A type cable with 25 pin Sub D connectors tee Load cell connections es In LL LC Tester side 0 Optional B type cable with spring terminal connectors Load cell connections LC Tester side 0 Jm Z b POWER SUPPLY AND BATTERIES REPLACEMENT The Load Cell Tester is powered by AA size batteries Use four x 1 5 V Alkaline Disposable Batteries or 1 2 V Ni MH Rechargeable Batteries The battery life depends on the number of load cells being powered and the intensity level of the LCD display Min consumption is about 125 mA single 350 Q load cell with display intensity at intermediate level Max consumption is about 190 mA four 350 Q load cells with display intensity at maximum level The life of alkaline disposable batteries is about 4 hours in continuous operating mode at the max consumption The life of the Ni MH rechargeable batteries depends on their capacity expressed in mA per hour For example with 4 x 2000 mAh batteries the battery life is over 8 hours in continuous operating mode at the max consumption 2000 mAh 190 mA 10 5 h Even though the theoretical limit exceeds 10 hours the auto shut o
16. als Apply a known weight on the weighing system prior to performing the following operation Press and hold the key to save the span mV V signals oO Once the Span mV V signals have been acquired the display prompts the following setting mV V Input Signals Enter weight value XXXXXX u m Note u m pre selected Unit of Measurement Enter the value of the known weight applied on the weighing system Refer to page 12 Entering numerical data for keys functions FS signals acquisition After a while the message disappears automatically and done the LC Tester resumes normal operating mode Warning message during the mV V signals acquisition If none of the Configuration Files have been opened previously the following message will appear on the display when trying to acquire the Zero or Span mV V signals mV V Input Signals Open or select a file prior to performing this function 39 Reading the Zero and Span mV V signals stored in memory The user has the opportunity to read the zero and span mV V values for each system simplifying any periodic checks required on the load cells When recalling a Configuration File from memory the Zero and Span mV V values previously stored and assi gned to the current file are also recalled From WEIGHING PARAMETERS menu WEIGHING PARAMETERS Load Cell Capacity LC Sensitivity Values Display Division Value Config
17. d on page 14 Oper mode described on page 21 22 LOAD CELL TESTER To be used exclusively for testing the load cells mV V Input Signals J Transducer Simulator jh Output Signal mV V 1 600 nv 7 920 Vin 4 95 GW 800 kg 80 gt 9 978 0 856 Test Cal Test a fe CONNECTION TO THE LOAD CELLS with Cable A Cable A terminates with a 25 pin female Sub D connector and is supplied with the J1 PT Screw Terminal Board Connection using Cable A to J1 PT Board L C 4 pa L C 2 LC s Tester side l L C 3 D L C 1 The LC s cables must be disconnected from their terminals and connected to the J1 PT screw terminals LOAD CELLS CONNECTION TO J1 PT SCREW TERMINAL BOARD TERMINALS LOAD CELL 1 LOAD CELL 2 LOAD CELL 3 LOAD CELL 4 8 SHIELD 15 SHIELD 22 SIGNAL 29 SIGNAL 9 EXCITATION 16 EXCITATION 23 SIGNAL 30 SIGNAL 10 EXCITATION 17 EXCITATION 24 SENSE 31 SENSE 11 SENSE 18 SENSE 25 SENSE 32 SENSE 12 SENSE 19 SENSE 26 EXCITATION 33 EXCITATION 13 SIGNAL 20 SIGNAL 27 EXCITATION 34 EXCITATION 14 SIGNAL 21 SIGNAL 28 SHIELD 35 S
18. es give significant values only if the load cell single capacity and sensitivities have been programmed 14 WEIGHING PARAMETERS MENU In Operating Mode WEIGHING PARAMETERS Number of Load Cells Unit of Measurement Load Cell Capacity LC Sensitivity Values Display Division Value WEIGHING PARAMETERS Number of Load Cells Unit of Measurement p sE gt The selected unit of measurement appears Load Cell Capacity i 9 in the box on the left of the screen LC Sensitivity Values Display Division Value Unit of Measurement Measurement unit selection with and Q WEIGHING PARAMETERS Number of Load Cells i Enter the nominal capacity of a single load Unit of Measurement l cell Load Cell Capacity eae The instrument automatically multiplies LC Sensitivity Values the single load cell capacity by the Display Division Value Number of LC s being used Load Cell Capacity Enter capacity of a single LC Enter 250 kg 15 WEIGHING PARAMETERS Number of LC s Setting the nominal sensitivity in mV V Unit of Measurement ES of each single load cell Load Cell capacity Take the data from the calibration 6 certificates or from the labels sticked on E gt the load cells Display Division Value j LC Sensitivity Values 2 0000 mV V 2 0000 mV V 2 0000 mV V LC Sensitivity Values mV V 2 0108 Setting the nominal sensitivity of LC Sensitivity Values 2 0108 mV
19. ff takes place sooner in order to assure the full functionality of the Load Cell Tester and to avoid completely discharging the batteries By continuous operating mode we mean that the Load Cell Tester switched on continuously Setting the auto shut off parameter will extend the battery life see page 16 for additional information BATTERY REPLACEMENT LC TESTER Rear view Remove the 3 screws indicated by the arrows Gently raise side A of the cover and slide it out Replace the 4 batteries as required observing polarity as marked on the battery holder See figure below e Reposition the cover in its seat Replace the 3 screws O O O The manufacturer waives all responsibility for any damage to the Load Cell Tester caused by the use of batteries other than those listed above Side A 4 MAIN PERFORMANCES Even if the 2 main functions performed by the Load Cell Tester are independent they allow to carry out the complete analysis of any weighing system composed by load cells up to 4 and weight indicator Function for testing the load cells This mode is used to diagnosis the load cells The display shows the following group of parameters 1 The signals coming from the load cells mV V values 2 The distribution of the weight on the load cells values 3 Load on each load cell compared with its nominal capacity values 4 Weight value on each
20. ied on the weighing system The span value may not necessarily coincide with the weighing system s full scale value The mV V values can only be stored when the instrument is in Load Cell Tester mode and the mV V Input Signals display view is selected see Figure 1 on page 14 The stored values are automatically associated to the Configuration File currently in use The stored mV V values can be used as reference values for performing periodic checks on the load cells When operating the load cell tester in Calibrator mode it can be used to generate a zero and span mV V output signal based on the average of the individual signals that were previously saved in memory These signals can be used to check or calibrate the Zero and Span of the weighing systems instrumentation The mV V signals representing zero and span can only be saved into the load cell testers memory when The load cell tester is displaying the mV V Input Signals see Figure 1 on page 14 One of the Configuration Files has been opened see page 30 Procedure Acquiring the Zero mV V signals Make sure that the weighing system is empty or unloaded prior to performing the following operation Press and hold the key to save the zero mV V signals zero signals acquisition done The stored values are automatically associated with the Configuration File currently in use 38 Acquiring the Span mV V sign
21. ing Vv Wrong or incomplete name Back Delete Existing File List Enter File Name Delete all Files Deleting all the files in the memory Delete Existing File List Enter File Name Delete all Files Delete all Files Confirm O OQO Select Enter Confirm Existing File List Enter File Name Delete all Files Delete all Files FILES l RESET Back to normal operating mode 34 Transferring one file all files In order to transfer the configuration files to a PC or vice versa the following conditions must be satisfied Assure there is a valid RS 232 connection between the Load Cell Tester and the PC Hyper Terminal application active on the PC in Receive File from LC Tester to PC or Send File from PC to LC Tester mode Communication parameters 9600 8 N 1 CONFIGURATION FILES The Send and Receive Files function is used to Save 1 Send the current file to a computer only the one Open _ currently in use Delete 2 Send all the files in the LC Tester s memory to a computer including the one currently in use 3 Receive from a PC 1 Configuration File Sending the current file to a PC CONFIGURATION FILES Send Current File Send all Files Receive File Enter Confirm CONFIGURATION FILES File transfer in progress CONFIGURATION FILES Please wait Send Current File Send all Files
22. itivity and Single LC capacity programmed in the LC Tester must be the same as those programmed in the instrument to be controlled Example If the instrument to be controlled is normally connected to 4 load cells 250 kg each 2 mV V the LC Tester must have been programmed with the same data see pages 15 17 Number of LC s 4 LC s sensitivity 2 0000 Single LC capacity 250 21 Key functions in CALIBRATOR mode Coarse increment of the mV signal output Each step 0 1 mV V Range from 0 to F S Coarse decrement of the mV signal output Each step 0 1 mV V Range from 0 to F S Fine increment of the mV signal output Fine decrement of the mV signal output Set to 0 the weight value Erases the weight value 0 setting BS OG GS Zeroing the weight value shown on the LC Tester This function helps the User during the zero and full scale calibration of the weighing instrumentation After having performed the zero calibration on the instrument the user can set to zero the weight value displayed by the LC Tester also so that the weight values displayed by the two devices can match Example weighing system comprised of an instrument connected to 4 load cells 250 kg each 2 mV V total 1000 kg dead load 200 kg live weight 600 kg The 0 calibration must be performed with a signal of 0 4 mV V equivalent to 200 kg while the F S calibration must be performed with a signal of 1 6 mV
23. l tester All of the data number of load cells capacity sensitivity unit of measurement division value can be stored in up to 100 different files which can be recalled when needed This feature expedites load cell tester set up time by eliminating the need of having to re enter all of the parameters It is also possible to save the zero and f s mV V values for each system for ease of any periodical checking The configuration files can be set and stored directly from the instrument s keyboard or with an Excel chart which can be created on a PC and then transferred to the LC Tester via the RS 232 serial port The bi directional communication feature allows transferring the files from the load cell tester to a computer Product Code 1006 SW 23 APPENDIX A CONFIGURATION FILE MANAGEMENT This section of the manual covers an OPTIONAL function that can only be activated by purchasing a PASSWORD Please contact the Manufacturers Sales Department for Terms and Conditions Please refer to page 25 for a general description of the Configuration File Management option 24 The CONFIGURATION FILE MANAGEMENT This function enables storage of up to 100 Configuration Files inside of the Load Cell Tester each File contains all the weighing parameters for up to 100 different systems The Configuration File management is performed using the Save Open Delete Transfer File functions Each file is identified by a na
24. load cell expressed in the selected measurement unit g kg Ton lb N KN Values 3 and 4 are only displayed if the parameters described on pages 15 to 17 have been programmed Faulty load cells or bad connections zero offset drifts or unstable signals can be easily detected These messages appear on the display in the following conditions 1 EXC indicates a problem with the Excitation lead 2 EXC indicates a problem with the Excitation lead 3 SIGNAL indicates a problem with one of the Signal leads Transducer Simulator Calibrator Mode In this mode the load cell tester is used to calibrate or check out the weight indicator A signal of up to 20 mV can be generated and used to check the linearity and to check or calibrate the Zero and Span of any weighing instrument Displayed parameters Transducer Simulator mk Output signal mV signal to instrument MV V signal to instrument mV V 1 600 7 920 Excitation from instrument Vin 4 95 GW 800 kg Weight value eee 80 of output signal MmV V bar graph 0 100 SWITCHING BETWEEN LOAD CELL TESTER AND CALIBRATOR MODES Switching between the 2 functions as described on the previous page is performed by pressing the Test Cal key CALIBRATOR SIMULATOR To be used exclusively for testing and calibrating the weighing instru ment Operating mode describe
25. me consisting of 8 alphanumeric characters The Configuration File function expedites load cell tester set up time by eliminating the need of having to re enter all of the parameters The following weighing parameters can be stored in each configuration file Number of load cells see page 13 Load cell nominal capacities see page 15 Unit of measurement for the weight values see page 15 Individual load cell sensitivities see page 16 Display division value see page 17 It is also possible to save the zero and f s mV V values for each system for ease of any periodic checking These stored mV V values can be generated by the Load Cell Tester when being used as a Calibrator in order to calibrate the Zero and Full Scale of the instrumentation installed in the weighing system The configuration files can be set and stored directly from the instrument s keyboard or with an Excel chart which can be created on a PC and then transferred to the LC Tester via the RS 232 serial port The bi directional communication feature allows transferring the files from the load cell tester to a computer Procedure for activating the CONFIGURATION FILES management Press and hold CONFIGURATION FILES Password Program the password then press the 0 Enter key to confirm Enter ee gt CONFIGURATION FILES J Activate the function O OQ Select Exits the menu without activating the function
26. mensions mm Board Dimensions mm s 33933 200 Box Dimensions mm In order to use the LC System Tester on weighing systems using summing J boxes other than the CGS4 C or CEM4 C we are offering our customers a free evaluation for installing a 25 pin Sub D connector on their own summing junction boards If you would like to take advantage of this offer we would require detailed draw ings or a sample of the summing J Boxes that you are currently using KEY FUNCTIONS IN OPERATING MODE Display intensity adjustment see page 20 Switching between LOAD CELL TESTER and CALIBRATOR modes Navigating through the various display views in LOAD CELL TESTER mode see page 14 Access to configuration menu Short press access to WEIGHING PARAMETERS see page 15 Long press access to SETUP MENU see page 17 Zero the weight value in CALIBRATOR mode see page 21 Erase the zero of the weight value in CALIBRATOR mode see page 21 Coarse increment in 0 1 mV V steps of the output signal in CALIBRATOR mode see page 21 Coarse decrement in 0 1 mV V steps of the output signal in CALIBRATOR mode see page 21 Fine increment of the mV V output signal in CALIBRATOR mode see page 21
27. parameters into a file named with less than 8 characters Exits the procedure without saving any data if no characters were previously entered Quitting the procedure means to resume normal operating mode Press for about 1 second to erase the last Exits the procedure and resumes normal character entered operating mode Press for a longer time to erase the entire No data storage name 28 If the new file name matches an existing file name the following message will appear on the display Overwrite the File O OQO Select Enter Confirm File is not overwritten jeg Overwrites the File TJA Display returns to Save jand quits the procedure menu Operating Mode Existing File List Enter File Name A warning message appears on the display in case the maximum number of files 100 is reached 3 secs Max number of files Not enough memory 29 Opening a Configuration File CONFIGURATION FILES The Open function is used to recall a file from the instrument s memory and make it operative This procedure can be performed in two different ways Delete a 1 Opening a file from the existing file list Send and Receive Files 2 Opening a file by entering the name 1 Opening a file from the existing file list Existing File List Enter File Name ABCDEFGH CFG12 B CFG13 TXKBGFRY 1234ABCD E The O Q keys sc
28. r about 3 seconds Rev 1 2 Number of Load Cells Confirm 1 Q Q Select Selection Enter Enter Confirm The value can be selected O between 350 and 7002 otherwise Ent it can be programmed by Mer Selection choosing the empty box in the Confirm lower part of the display Once the value has been set the LC Tester enters the Operating Mode automatically Operating Mode m S mV V Input signals Impedance value O 1000 NOTE In case the last switch off of the LC Tester was caused Min programmable value 30022 by the Auto Shut Off function see page 18 the LC Max programmable value 20002 Tester immediately resumes the Operating Mode Decimal values will be automatically rounded without asking for the LC s Number and Impedance to to the lower integer value be programmed The instrument s memory will keep the stored values 13 OPERATING MODE DATA VISUALIZATION During normal operation in Load Cell Tester mode see page 6 the SWITCH VIEW key switches the display among 4 different views mV V Input Signals Individual mV V values coming from the load cells Distribution of the weight on the load cells Ideal distribution 25 each LC Weight value on each load cell Expressed in the selected unit of measurement Switch view Load on each load cell compared to its nominal capacity NOTE Display views 3 of load on LC s and 4 Weight valu
29. roll UP and DOWN the list of existing files The key opens the selected file The G key quits the menu step by step until normal operating mode is resumed Confirm O Select Enter Confirm Enter Enter Exits the menu and opens the selected Exits the menu without opening the file Normal operating mode is selected file automatically resumed Display returns to Open menu 30 2 Opening a file by entering the name From previous page Enter File Name The procedures for entering the file name are those described on page 28 Refer to Key Functions chapter If the name just entered is correct the display shows the following Confirm O OQ Select Enter Confirm Exits the menu and opens the file Normal operating mode is automatically resumed 31 Opening a file Entering the file name The following grid appears on the display The letter A is highlighted If the name just entered is wrong the display shows the following Vv Wrong or incomplete name Back Existing File List Enter File Name Deleting one of the files CONFIGURATION FILES The Delete function is used to delete a file in the instrument s memory This procedure can be performed in two different ways 1 Deleting a file from the existing file list 2 Dele
30. time delay selection The selected value appears in the box on the left of the screen The LC Tester switches off automatically if no keys are pressed within the selected time delay Auto Shut Off LCD Contrast H ii is The countdown is restored if any of the pet Date MN DENY keys is pressed within the selected time Set Time delay Baud Rate OFF function disabled Auto Shut Off w A 3 MN E 5 MIN omn fy Auto Shut Off LCD Contrast Set Date MM DD YYYY Set Time Baud Rate Page 19 18 Auto Shut Off Setting the Date LCD Contrast cS 6 Max values 12 month te MM DD YYY l gt 31 day Set Time EUO Weal Baud Rate SETUP MENU Set Date MM DD YYYY 09 20 2006 Auto Shut Off LCD Contrast Set Date MM DD YYYY Setting the Time R Max values 23 hour 59 minutes Baud Rate SETUP MENU Set Time 16 45 Auto Shut Off Set Date MM DD YYYY Set Time LCD Contrast Baud Rate List of values 1200 2400 4800 9600 19200 38400 57600 RS 232 baud rate selection SETUP MENU RS 232 Baud Rate 9600 Exits the menu and returns Selection to Operating Mode DISPLAY INTENSITY ADJUSTMENT In Operating Mode ___Display Intensity ____ Increases Intensity keys to adjust 5 a key to exit i Reduces Intensity C L Confirm and return to Operating Mode A AS 20 THE CALIBRATOR FUNCTION How to enable the function
31. ting a file by entering the name Delete Send and Receive Files Lv 1 Deleting a file from the existing file list Existing File List Enter File Name Delete all Files ABCDEFGH CFG12 i CFG13 TXKBGFRY 1234ABCD E The O Q keys scroll UP and DOWN the list of existing files The D key opens the selected file The G key quits the menu step by step until normal operating mode is re sumed Confirm O OQO Select Enter Confirm Vv Exits the menu and deletes the Exits the menu without deleting the selected file Normal operating mode is selected file automatically resumed Display returns to Delete menu 32 2 Deleting a file by entering the name From previous page Delete Existing File List Enter File Name Delete all Files The procedures for entering the file name are those previously described on page 28 Refer to Key Functions chapter If the name just entered is correct the display shows the following Confirm O OQ Select Enter Confirm Exits the menu and deletes the selected file Normal operating mode is automatically resumed 33 Deleting a file Entering the file name The following grid appears on the display The letter A is highlighted If the name just entered is wrong the display shows the follow
32. uration Files Stored mV V Signals Press the faiju m to access this menu 0 318 mV V 0 325 mV V 0 290 mv V 0 285 mV V Weight value associated to the Span mV V signals the one entered previously during the mV V signals acquisition See top of page 39 Back to WEIGHING PARAMETERS menu 40 CALIBRATOR mode GENERATING STORED mV V LOAD CELL SIGNALS The stored zero and span mV V signals can be used to check or calibrate the Zero and Span points of the instrumentation being used in weighing system The load cell tester will generate a mV V signal for zero and span based on the average of the individual signals previously stored in memory 0 318 0 325 0 290 0 285 1 218 4 0 304 mV V 0 318 mV V 0 290 mV V In this example 0 304 mV V will be the value generated by the 0 285 mV V LC Tester in order to reproduce the signal coming from the load cells at zero point 1 214 1 221 1 214 mV V 1 185 1 180 4 800 4 1 200 mV V 1 185 mV V In this example 1 200 mV V will be the value generated by the LC Tester in order to reproduce the signal coming from the load 1 180 mV V cells corresponding to a weight value of 600 kg Procedure Press the Test Ca button to switch the LC Tester into CALIBRATOR mode Generating the Zero signal Generating the Span signal Press and hold p Press and hold Stored mV V signals Stored mV V signals
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