TECHNICAL -REFERENCE MANUAL
Contents
1. Tee VT150 MANUAL 13 02 05 VT150UM 14 of 23 ay VISHAY Vishay Transducers Transducers 5 2 CUSTOM PRINT FORMATS These are data strings for transmission to a printer The formats are edited by the user any ASCII editor and downloaded to the unit via the serial port RS232 When a print operation takes place the VT150 will insert the scale variables in selected positions in the string specified with 123 where 123 is the decimal code of the variable E g scale variable 40 Net should be inserted as 040 Non printable characters may be inserted in the string specified as 123 where 123 is the decima equivalent of the character code E g Esc E 1Bh 45h is inserted as 027 E This may be repeated as many times are required in the string The following scale variables are implemented in the VT 150 A A DESCRIPTION LENGTH 007 Weigh number 4 digit 008 Totaliser 7 digit decimal point 030 Date 8 digit 032 Time 5 digit 036 Tare 5 digit decimal point 038 Gross 5 digit decimal point 040 Net 5 digit decimal point Two formats may be downloaded 1 amp 2 512bytes each Format is transmitted in Gross mode while format2 is transmitted in Net mode For the user defined formats to operate SETUP2 2 t 20 The formats are downloaded to VT150 using the Fn 41 Fn 42 procedures see chapter 6 or command see chapter 8 2 A test printout should be performed to validate the format FUNCTION MENU The function2. If printing was succesful where xxxx 4 digit serial number and yyyyyy 6 digits weight including decimal point or empty or corrupted data or VT150 response If print conditions were not met Motion ve weight etc R REPRINT Returns the last weight and sequence number stored in the Alibi memory Master transmission ETX VT150 response yyyyyy 6 digits weight including decimal point or empty or corrupted data xxxx 4 digits serial number S SELECT DJB Selects one of the scales in a multi scale network Master transmission XX DJB address VT150 response Err 30 will be displayed if the DJB address is not programmed for polling by the VT150 set up 3 T TARE GROSS Tares the weight on the scale and switches the VTDJB to net weight mode Master transmission 1 VT150 MANUAL 13 02 05 VT150UM 21 of 23 ay VISHAY Vishay Transducers Transducers VT150 response NONE Execution of the command should be checked by examining the next status string Z ZERO SCALE Sets the scale to zero if the weight is stable and within 2 of scale capacity Master transmission BCS2 BCSI VT150 response NONE Execution of the command should be checked by examining the next status string o Tos Tee VT150 MANUAL 13 02 05 VT150UM 22 of 23 Ty VISHAY Vishay Transducers Transducers 9 SPECIFICATIONS 9 1 Environmental And Electrical Considerations AMBIENT TEMPERATURE Storage 10
3. C to 70 C Operating 10 C to 40 C No direct sunlight to fall on the equipment 40 to 90 RH non condensing The surrounding air should be dust free and not contain any corrosive gases or materials which could adversely affect the equipment Severe vibration can affect the accuracy of weighing and damage electric electronic components IP 40 for front panel Heavy electrical equipment should not be installed close to the weighing equipment 7 5 10 VAC 50 Hz or 8 12 Vdc Consumption 1 8 Wmax Relays and contactors connected to the equipment must have reliable and effective interference suppression Cabling must be performed according to normal practice WELDING on or in the vicinity of weighing equipment is prohibited STATIC loads caused by thunderstorms must be prevented from developing by use of reliable lightning conductors ENSURE that the cooling of the equipment is not obstructed HUMIDITY AIR VIBRATION PROTECTION ELECTROMAGNETIC FIELDS POWER SUPPLY INCOMING AND OUTGOING SIGNALS NOTES Technical Specifications DIGITAL PART VERSION A VERSION B MCU 89C55 20K ROM 64W serial EEPROM MCU 89C55 20K ROM 64W serial EEPROM 32K serial FLASH battery backed real time clock and totalising RAM Hardware and Software MCU watchdog Memory failure I O failure Program check Serial port RS232C FULL DUPLEX 1200 baud Version B Serial port RS485A HALF DUPLEX 2400 115 000 baud SELF DIAGNOSTICS
4. COMMUNICATIONS DISPLAY KEYBOARD ALIBI MEMORY EMC COMPATIBILITY DIMENSIONS WEIGHT MAINTENANCE 6 digit LED plus annunciators for NET NO MOTION TARE SP1 8 2 Colour red Height 14 mm 6 key membrane type Capacity 10 000 records Cyclic overflow FIFO Display an printoperations Checksum for each record Meets or Exceeds EN 45 501 requirements PANEL 144 L x 72 x 70 D 450 gr INOX 180 L x 108 H x 60 D 1 2 kg The unit does not require any routine maintenance It may be necessary to perform periodic checks of the calibration of the scale due to mechanical reasons The frequency of the calibration checks depends on the application condition and on the required measuring accuracy It may happen that in exceptional conditions the unit locks on a wrong memory location and it is not possible to restart because the keyboard is not operative To restart it is necessary to switch the power OFF then ON again VT150 MANUAL 13 02 05 VT150UM 1 23 of 23 ay VISHAY Vishay Transducers Transducers 9 4 SERVICE There are no serviceable parts The unit may be repaired by trained personnel only The user may check cable connection s and power supply Dee _ VT150 MANUAL 13 02 05 VT150UM 24 of 23
5. responding the routine is executed until power down or O is pressed SET DATE TIME SERIAL Nr Enabled only if SETUP 1 6 1 Display shows DDMMY Y or MMDDY Y depends on setup 1 4 DD Day MM Month YY Year Use NUMSCROLL to edit the date Display shows HHmmSS HH Hour mm minutes SS Seconds Edit the time Display shows nnnnn the print serial number Edit the print number The program ends and returns to weight display PIN CHANGE Used to change the current Personal Identification Number that enables access to the calibration procedure The unit is factory set so that the PIN is not active ie 000000 The display shows Pin 0 briefly then 000000 Key in the old pin and P The display shows Pin 1 if the pin was correct else the unit is reset Key in the new Pin and P The display shows Pin 2 Key in the same Pin for validation and P The new pin is stored and the display shows PASS briefly If the two entries are not the same FAIL is displayed briefly and the program returns with the old pin remaining in memory WARNING Make sure you do not loose the code entered If the code is lost the unit must be returned to the factory to initialise the Pin and a fee will be charged DOWNLOAD CUSTOM PRINT FORMAT 1 The display shows For 1 indicating that it is ready to receive format 1 Begin the transmission When the transmission ends press P the display shows Prn 1 briefly when the format is saved in non volatile memory A maximum o
6. 05 VT150UM 1 16 of 23 Ty VISHAY Vishay Transducers Transducers Empty locations are printed Corrupted locations are printed The program exits when the printout is completed or O pressed CHECK ALIBI MEMORY A checksum is performed on each Alibi memory record If an error is found E77 is displayed Press O to exit If all is OK PASS is displayed briefly LOADCELL MV METER The actual mV V output of the scale sensors is displayed To act as a mV V meter the unit loads default calibration data Press O to end The unit will restart DISPLAY INTERNAL A D COUNTS The display shows Corn 0 briefly Then it shows the sum of the corrected loadcell output s in internal resolution Press The display shows Corn 1 briefly then loadcell 1 output raw A D Press The display shows Corn 2 briefly then loadcell 2 output raw A D Press The display shows Corn 3 briefly then loadcell 3 output raw A D Press The display shows Corn 4 briefly then loadcell 4 output raw A D Press O to exit DISPLAY CORNER FACTORS Displays the calculated corner factors for the connected loadcells The display shows FAct 1 briefly then loadcell 1 correction factor Press l The display shows FAct 2 briefly then loadcell 2 correction factor Press l The display shows FAct 3 briefly then loadcell 3 correction factor Press l The display shows FAct 4 briefly then loadcell 4 correction factor Press O to exit SOFT RESET VTDJB Similar to VTDJB p
7. Reserved Leading zero blank 0 NO 1 YES Reserved N A Dual interval 00 99 The first two digits of the weighing range for which the lower display division will be selected automatically 00 Dual interval not active GAIN Loadcell amplifier adjustment 0 2 1 4mV V LCNR Nr of loadcells connected 1 4 Upon exit from PAR the new parameters are downloaded automatically to the connected VTDJB but not saved in non volatile memory The calibration audit trail counter will be incremented MENU CAL Scale calibration of VTDJB Used for Zero Span calibration and corner correction Press P to enter the menu Press to scroll through S CAL E CAL CAL Press P to enter the displayed dialogue If the scale is calibrated for the first time or a loadcell is changed the sequence Corner Zero Span should be followed Subsequent calibration may include only Zero or Zero and Span Be aware that CAL does not automatically save the calibration constants in non volatile memory It must be done by the user with the STORE dialogue DIALOGUE S CAL Standard Calibration of VTDJB with weights Display shows CORNER Press to scroll through ZERO SPAN CORNER or press O toexitto S CAL Press to enter the displayed dialogue CORNER CORRECTION Scale corner adjustment Display shows E Scl Make sure that the scale is empty and press The display shows WAIT for about 15 sec Then it shows CORNER 1 Place test weight in CORNER 1 and
8. interface protocol The unit may also be used as remote display for numeric indicators with continuous weight output mode VT150 may be used for legal for trade applications when connected with one or more weigh scales since calibration data is stored in the VTDJB The basic configuration includes l Serial port RS485A with network capability 2 Front panel with 6 digit LED display plus 5 annunciators and 6 membrane keys 3 Non volatile memory for system parameters and calibration data 4 The setting of the unit is done through a guided keyboard operation enabling the adaptation to operating environment and system requirements Two setup procedures are executed Fn 49 for calibrating the VTDJB and Fn 46 for setting up operation mode and communication parameters of VT150 Real time clock calendar with rechargeable battery backup Serial port RS232 adapter for printing weighing data on a serial printer and or bidirectional communication with a host computer Non volatile memory for storage of 10 000 weights electronic tally roll or Alibi memory OPTIONS OP 5 230 VAC to 9 VAC 500mA mains power adapter OP 7 RS232C RS485A converter including power adapter 230 VAC to 8 VAC 500mA OP 8 Bracket Table top Wall mount for the panel version OP 9 Custom software on request ENCLOSURES P Panel mount 72x 144 x 70 mm S Stainless steel 180 x 108 x 60 mm VT150 MANUAL 13 02 05 VT150UM 1 3 of 23 VISHAY Vishay Trans
9. menu enables the selection of a number of software programs indirectly Press key Display shows Fn 00 Key in the function code desired using NUMSCROLL entry procedure NUMSCROLL EDIT T MOVE ONE DIGIT TO THE RIGHT CYCLIC INCREMENT FLASHING DIGIT ACCEPT DISPLAYED NUMBER The corresponding program will be activated To exit the function selection press P while Fn 00 is displayed The following functions are available 30 SELECT DJB ADDRESS When P is pressed VTDJB xx is displayed briefly if the selection is within the range of VTDJBs programmed The default setting will be re installed after power up EDIT SETPOINTS Display shows SetP 1 briefly then the existing setpoint value key in the desired value using NUMSCROLL entry procedure Display shows SetP 2 briefly then the existing setpoint value key in the desired value using NUMSCROLL entry procedure EDIT amp STORE SETPOINTS IN EEPROM Identical to Fn 31 In addition the setpoints will be automatically saved in non volatile memory AUTOTUNE Searches all baudrates and data bits parity combination until communication is established with a VTDJB The VT150 will search all VTDJB addresses starting from A with eac combination of baud rate and data bits It will exit when the first VTDJB is found VT150 MANUAL 13 02 05 VT150UM 1 15 of 23 Ty VISHAY Vishay Transducers Transducers Communication setup data of this VTDJB may be observed with Fn 46 If no VTDJB i
10. 8 38400 baud Usel to select 96 9600 baud 57 57600 baud and P to accept 19 19200 baud 11 115 kbaud and proceed DATA BITS amp PARITY 08 8 data bits no parity Use to select 17 7 data bits Even parity and P to accept NR OF POLLED VTDJB Key in the number of connected VTDJB s decimal 01 63 Polling always starts with address A 41h or 65d DJB DISPLAY ADDRESS Use DIGIT ENTRY to key in the VTDJB address to be displayed 65 127 by the VT150 decimal DIALOGUE STORE Save in EEPROM Press P to permanently save all the calibration data Program exits setup calibration and reinitialises up to 100 000 storage cycles allowed The data will be stored in the VT150 EEPROM DIALOGUE INIT It initialises the VT150 to factory default values VT150 MANUAL 13 02 05 VT150UM 1 10 of 23 WEM VISHAY Vishay Transducers Transducers SET UP 1 SET UP 2 SET UP 3 11 1 24 01 2 1 0 3 t 02 1 224 2 d 17 2 2 0 3 b 96 1 3 0 2 65 2 3 0 3 d 17 1 4 0 2 L 01 24 0 30 01 1 5 0 2 1 00 25 0 3 E 65 16 1 2 00 2 6 0 1 7 0 2 F 00 2 7 0 1 8 0 2 8 0 1 t 00 VTDJB CONFIGURATION To enter the set up amp calibration of VTDJB press A The display shows Fn 00 Use NUMSCROLL EDIT until the display shows Fn 49 then press P Display shows PAR Use to scroll through CAL SETUP INIT STORE PIN dialogues While in the CAL menu press to select S CAL or E CAL submen
11. DJB The unit is connected in a VTDJB network VTDJB unit s are scanned by a master unit which may be a personal computer or another VT150 The slave VT150 will display all data weight and messages originating from the VTDJB with the same address VT150 MANUAL 13 02 05 VT150UM 1 7 of 23 Ty VISHAY Vishay Transducers Transducers SETUP REQUIREMENTS 9600 E 7 1 VTDJB address A Don t care Don t care 3t 03 3b 96 3d 17 3E 65 the rest don t care Keyboard operation is normal except that no commands are transmitted to VTDJB s and printing or totalizing is inhibited The unit may display data from any of 30 VTDJBs in a network the selection 1s performed by Fn 01 to Fn 30 corresponding to VTDJB address A to Z 41h to SEh Only polled VTDJBs are displayed so the master in the network must have been set up to poll all V TDJBs accordingly The master may poll the addressed VTDJB units sequentially or in any order of frequency The VT150 will pick up the selected VTDJB data and display it DUAL VTDJB MASTER MODE SCALE A B The VT150 polls two VTDJBs A and B connected to loadcell scales The unit may display the weight from scale A or from scale B or the sum of the two weights A B Individual scale weights or the sum of the two may be printed or totalized or transmitted to PC If scale A or scale B is selected the operation is normal single scale where the display and keyboard operate for this scale only If A B is
12. ET GROSS TARE NET quadruple size 06 SINGLE LINE NUMBER AND GROSS TARE NET 09 HOST COMPUTER MODE VT150 MANUAL 13 02 05 VT150UM 1 9 of 23 ay VISHAY Vishay Transducers Transducers 20 CUSTOM PRINTS Format 1 in Gross Max 512 b Format 2 in Net Max 512 b DATA BITS SERIAL CHANNEL 1 17 7 data bits even parity 08 8 data bits no parity ADDRESS OF VT150 A Z PAGE LENGTH Ticket length in linefeeds PAPER REVERSE Number of reverse linefeeds before printout LEFT MARGIN Number of spaces from left margin PAGE HEADER Number of linefeeds before printout RESERVED RESERVED PRINT BELOW 0 1 YES Printing is inhibited if the weight is less than MIN CAPACITY min 20 scale division and the display show Lo CAP briefly RESERVED RESERVED WAIT UNLOAD 0 1 YES Inhibits further prints until the weight falls below min PRINTER ERROR 0 1 YES Printer error or paper out will display Err 20 CONTROL and transmission will be inhibited RESERVED SETUP 3 SERIAL PORT 1 amp MODE 3 t MODE OF OPERATION 01 Remote display for continuous weight input Use to select Instruments LECW 2 protocol ie P 12 345 CR and P to accept 02 VTDJB mode Master Polls VTDJB s connected and displays VIDJB data and proceed 03 DJB mode Slave Displays data from VTDJB Polling of the VTDJB s must be done by another Master VT150 or PC 04 Dual VTDJB mode Master SCALE 05 N A BAUD RATE 24 2400 baud 3
13. STX ADD ACK BCS2 BCS ETX F FORMAT CUSTOM DOWNLOAD The commands is used to download custom print formats to VT150 Master transmission where 1 format VT150 response To indicate that it is ready to receive a continuous string When ACK block from the VT150 is received the master should start transmitting of the string The VT150 remains in the receive mode until P is pressed on the keyboard No characters exceeding the full length 512b will be received UPLOAD WEIGHT Returns the current displayed weight plus status or with a message if bitO of status byte is 1 In the normal state the VT150 will respond within 3 4 character times Master transmission VT150 MANUAL 13 02 05 VT150UM 1 20 23 ay VISHAY Vishay Transducers Transducers VT150 response STATUS BYTE BCS2 BCSI where is replaced in scale A B mode 1 scale A 2 scale B 0 and xxxxxx Weight if b0 of status byte is zero or Message if b0 of status byte is one STATUS BYTE b6 b5 B4 b3 b2 bl bO Zero or 1 Sign of weight No Motion Out of range Autozero 0 Gross 0 Normal Weight Parity 0 1 0 NO 0 NO 0 NO 1 Net 1 No Weight Display 1 YES 1 YES 1 YES P PRINT The scale weight is printed in the internal electronic tally roll The command returns the weight and sequence number of the Alibi memory Master transmission STX ADD BCs2 BCSI_ ETX VT150 response STX ADD Yyyyyy xxxx BCS2 BCSI ETX
14. TDJB communication speed and address code In the setup dialogue the following two numeric scroll edit procedures are used 1 SCROLL 2 NUMSCROLL EDIT DISPLAY NEXT SELECTION T SELECT DIGIT CYCLIC P ACCEPT DISPLAYED VALUE INCREMENT FLASHING DIGIT P ACCEPT DISPLAYED NUMBER VT150 CONFIGURATION To enter the configuration procedure of VT150 press a The display shows Fn 00 Use NUMSCROLL EDIT until the display shows Fn 46 then press Display shows SETUP Press to step through SETUP STORE INIT dialogues Press O key to exit the menu or press P to enter the displayed item SETUP SUBMENU Press to scroll through SETUP 1 SETUP2 SETUP3 SETUP Press to enter the displayed dialogue SETUP 1 OPERATIONAL PARAMETERS 1 1 Totalizing memory 0 No 1 Yes Enables the totalizing of printed weights 1 2 Alibi memory 0 No 1 Yes enables the electronic tally roll B only see chapter 4 2 amp 4 4 1 3 Reserved 1 4 Date format 0 d m y 1 m d y 1 5 Reserved 1 6 Real time clock 0 No 1 Yes amp ram totaliser Enables date time and totalizing in battery backed ram B only 1 7 Reserved 1 8 Reserved 14 Display off timer 00 99 minutes 00 Disabled Time for the display to turn off automatically if the weight is zero and no key is pressed SETUP 2 SERIAL PORT 2 PRINT PARAMETERS 2 t PRINT TYPE 00 PORT DISABLED 01 TICKET PRINTOUT Date time Nr weight 02 CONTINUOUS TRANSMISSION OF WEIGHT 05 TICK
15. ay VISHAY Vishay Transducers Transducers REMOTE DISPLAY TERMINAL VT150 TECHNICAL REFERENCE MANUAL VT150 MANUAL 13 02 05 VT150UM 1 1 of 23 ay VISHAY Vishay Transducers Transducers TABLE OF CONTENTS INTRODUCTION FRONT PANEL DESCRIPTION INSTALLATION MOUNTING WIRING AC POWER aAA OPERATING MODES REMOTE DISPLAY Continuous weight input MASTER DISPLAY AND KEYBOARD FOR DJB SLAVE DISPLAY FOR DJB DUAL DJB MASTER MODE Scale A B DUAL CHANNEL DWI MASTER MODE SETUP AND CALIBRATION VT150 CONFIGURATION DJB CONFIGURATION CUSTOM PRINT FORMATS W 0 4 p FUNCTION MENU ERRORS oo COMMUNICATIONS SERIAL PORT 1 SERIAL PORT 2 SPECIFICATIONS MAINTENANCE SERVICE Toe Tee VT150 MANUAL 13 02 05 VT150UM 2 of 23 Ty VISHAY Vishay Transducers Transducers 1 INTRODUCTION VT150 is a Remote Display Terminal specifically designed for use as remote weight indicator for Digital Junction Box weigh systems VTDJB The unit maybe operated in the Master mode where it will poll all max 63 VTDJB s connected to it or in the Slave mode where it will only display information from a selected VTDJB Setup and Calibration of VTDJB s is performed via VT150 in the Master mode When several VTDJB s and VT150 s are connected on one cable only one VT150 is allowed to poll the VTDJB s Communication in a master slave network is based on MSP serial
16. ducers Transducers 2 FRONT PANEL DESCRIPTION WEIGHT DISPLAY 6 digit LED for the display of measured weight gross or net and error messages Digit height approx 14mm OVERARANGE is indicated by vvvvvv UNDER RANGE is indicated by uuuuuu Scale not level will be indicated by tilt NET INDICATOR If lights up when the scale has been tared and the display is in NET mode TARE INDICATOR It indicates that a tare value 1s being displayed NO MOTION INDICATOR It hghts up when the scale is stable CENTER OF ZERO INDICATOR It lights up when the scale weight is stable and within 1 4 division of actual zero SCALE A INDICATOR In dual scale mode it indicates the weight from scale A is displayed ON Scale A is displayed OFF Scale B is displayed SCALE B INDICATOR In dual scale mode it indicates the weight from scale B is displayed ON Scale B is displayed OFF Scale A 15 displayed When both scale A amp B LEDs are illuminated the sum of the weight A B is displayed o Tos Tee VT150 MANUAL 13 02 05 VT150UM 4 of 23 ay VISHAY Vishay Transducers Transducers 8 ZERO CLEAR ERROR ESCAPE KEY It is used to reset the weight display to zero Zeroing will be effective only if the scale is stable in gross mode and the weight is within 2 of max weighing capacity If an error is present on the display press this key to acknowledge TARE KEY toggle It is used to tare the scale Taring will be eff
17. ective only if the scale is stable and within the weighing capacity If the scale has already been tared depression of the key will cause the tare to be cancelled and the weight display to return to Gross mode TARE RECALL KEY Pressing this key will cause the tare memory to be displayed briefly In DUAL SCALE mode the key switches between scale A or scale B or SUM A B P PRINT ACCUMULATE It is used to transmit weight data to peripheral devices via the serial port 1 The transmitted weight will also be accumulated The weight will be printed only if it is stable and within the weighing range of the indicator Printing and or accumulation will take place only if enabled in set up The weight data printed is selectable in SET UP 2 2t Refer to the technical manual for details Y TOTAL KEY It is used to display the current accumulated total Press Y again to see the number of weighings Press Y again to end the total display or Press P to print delete the total A FUNCTION KEY Enables a selection of software utilities 00 99 Fn 00 appears on the display Use keys to increment the flashing digit T to change digit When the correct number is displayed press P The selected function will be activated Refer to chapter 6 Function menu for details of available utilities VT150 MANUAL 13 02 05 VT150UM 1 5 of 23 ay VISHAY Vishay Transducers Transducers 3 INSTALLATION 3 1 Mounting The mounting location mus
18. f 512 bytes may be stored If more characters are received they will be lost DOWNLOAD CUSTOM PRINT FORMAT 2 The display shows For 2 indicating that it is ready to receive format 2 Begin the transmission When the transmission ends press P the display shows Prn 2 briefly when the format is saved in non volatile memory A maximum of 512 bytes may be stored If more characters are received they will be lost SETUP OF VT150 Refer to chapter 5 VIEW CALIBRATION AUDIT TRAIL COUNTER SEALEd is displayed if the CAL LOCK jumper inside the VTDJB is inserted Press P to continue CALPin is displayed if the software PIN calibration lock has been activated Press P to continue The 6 digit AUDIT TRAIL counter is displayed Press to P to exit The audit trail counter is incremented every time a weight parameter or calibration is changed regardless if the change was saved in EEPROM or not SETUP amp CALIBRATION OF DJB Refer to chapter 5 VIEW ALIBI MEMORY LOCATION PRINT 10 NEXT SERIAL NUMBERS The display shows n 1234 where 1234 is the serial number of the last record Key in the 4 digit serial number desired and or press P The display flashes the weight of this record Press P to print the serial number displayed plus the next nine locations or press O to exit PRINT ALL ALIBI MEMORY Automatically prints a list of the contents of the Alibi memory The printer must be capable of printing on 80 columns paper compressed mode VT150 MANUAL 13 02
19. fic Standard formats may be displaced on the paper by selection of formatting parameters in set up 2 Parameter 2 3 in set up 2 may be selected to inhibit printing weights below min Parameter 2 6 in set up 2 may be selected to inhibit further printouts until the scale weight falls below min in order to avoid double printing and or totalising Printed weights may be totalized if set up 1 1 1 Parameter 2 7 in set up 2 enables a paper out or printer error to be detected Printing is initiated by key P provided that the weight is stable positive and within weighing range HOST COMPUTER MODE This mode is used to communicate with a Host computer The Host transmits a command and the VT150 replies with the required data or executes the command SET UP REQUIREMENTS 1200 E 7 1 A Application specific 2t 09 2d 17 2E A Z 3t 02 or 04 The rest are application specific For approved installations the ALIBI MEMORY must be active set up 1 4 The following commands have been implemented VT150 MANUAL 13 02 05 VT150UM 1 19 of 23 ay VISHAY Vishay Transducers Transducers A SCALE A Select scale A in a multi scale network Master transmission ETX VT150 response B SCALEB Select scale B in a multi scale network Master transmission STX ADD BCS BCS _ ETX VT150 response C SCALE A B The sum of the weights on scales A and B is returned Master transmission ETX VT150 response
20. he calibration is not accurate Press O to exit to SPAN Press twice to exit to CAL E CAL DIALOGUE Electronic calibration of VTDJB with mV V from loadcell data sheets Display shows CORNER Press P to calibrate corners Display shows 000000 Enter the rated output in mV V of loadcell in corner 1 Example If of Loadcell 1 1 9793 mV V then enter 019793 The display shows CORNER 2 Press P Enter the rated output in mV V of loadcell in corner 2 The display shows CORNER 3 Press P Enter the rated output in mV V of loadcell in corner 3 The display shows CORNER 4 Press P Enter the rated output in mV V of loadcell in corner 4 Display shows WAIT for about 5 sec Then it shows weight Press Display shows CORNER Press Display shows ZERO Press P Enter the overall mV V of the dead load Load cell zero balance scale dead load Display shows WAIT and then it displays weight Press then 1 The display shows SPAN Press The display shows C xxxxx Enter the rated capacity of each loadcell The display shows WAIT and then it displays weight to exit VT150 MANUAL 13 02 05 VT150UM 1 13 of 23 ay VISHAY Vishay Transducers Transducers SET UP SUBMENU Press to scroll through SET UP 1 SET UP 2 SET UP Press P to enter the display dialogue SET UP 1 operational parameters of VTDJB l c Tilt switch 0 NO 1 14 Debounce time 0 9 sec If b
21. ill search port 2 If no data is received by any port E30 will be displayed until data reception is restored DO NOT CONNECT BOTH PORTS SIMULTANEOUSLY MASTER DISPLAY amp KEYBOARD FOR DJB S In this mode of operation the VT150 polls the VTDJB s and displays their data Commands such as Zero Tare etc are issued to the VTDJB via the VT150 s keyboard Calibration of the VTDJB is also possible through a dialogue in the VT150 A number of VTDJBs may be connected in a network with one VT150 acting as the master The VTDJB address whose data is displayed is keyboard selected with Fn 01 to Fn 30 corresponding to VTDJB A to The default address is A ie the first VTDJB in the network SETUP REQUIREMENTS 9600 E 7 1 VTDJB address A Nr of VTDJBs 4 Application dependent Application dependent 3t 02 3b 96 3d 17 3 8 4 3E 65 The VT150 always polls VTDJBs in sequence starting from address A and increments the address until the programmed number of VTDJBs set up 3 n where it circles back to A The cycle is repeated as long as the VT150 is in the weight display mode Polling is paused while in the function menu or printing etc The selected Fn 01 to Fn 30 VTDJB may displayed or calibrated via the VTDJB calibration procedure in the VT150 while all VTDJBs are polled This however limits the response time of the selected VTDJB Refer to chapter 5 for details of set up and calibration procedures SLAVE DISPLAY FOR VT
22. ns and communication parameters PROTOCOL NOT ACK Check connections and communication OR CALIBRATION LOCK parameters CORRUPTED TOTALISER After clearing the error the totaliser is reset to O TOTALISER OVERFLOW Print clear totalisers Overflow is not critical but remember that 1 total capacity must be added to the indication each time an overflow occurs CORRUPTED ALIBI MEMORY The weighing memory can not be LOCATION cleared but next records will be corrected To exit from error display press COMMUNICATIONS One communication port is RS485A SERIAL PORT 1 This is the port used for connection to VTDJB s and for networking Additional serial port SERIAL PORT 2 used for connection with printers or personal computers SERIAL PORT RS485A The port operates in half duplex mode Communication is based on LESIP master slave serial interface protocol See LESIP with DJB appendix for details Baudrate and databits are configured in VT150 setup 3 Cable connections are shown in Annex A CONNECTOR amp CABLE DIAGRAM SERIAL PORT 2 RS232C VERSION B ONLY The port operates if full duplex mode Baudrate is fixed at 1200 bits sec 7 data bits even parity or 8 data bits no parity may be selected in VT150 SET UP 2 d The functionality of the port is also programmed in set up 2 The different modes of operation are detailed below CONTINUOUS WEIGHT OUTPUT The indicated weight and stat
23. oth 1 c 0 and 1 t 0 the tilt function is disabled SET UP 2 COMMUNICATION PARAMETERS OF VTDJB Display shows SEt UP2 Press to enter the dialogue 2 b BAUD RATE 24 2400 baud 38 38 4kbaud Use to select 96 9600 baud 57 57 6kbaud and P to accept 19 19200 baud 11 115kbaud and proceed DATA BITS amp PARITY 08 8 data bits no parity Use to select 17 7 data bits Even parity and P to accept VTDJB ADDRESS Use DIGIT ENTRY to key in the VTDJB network address 65 127 decimal DIALOGUE STORE Save in EEPROM Press P to permanently save all the calibration data Program exits setup calibration and reinitialises up to 100 000 storage cycles allowed The data will be stored in the DJB eeprom DIALOGUE INIT Installation of Default Parameters It downloads default calibration data for checking purposes The weight display will act as amV V meter of the Loadcell output Press P to activate the initialization procedure Press to exit the init mode Be aware that the default parameters and calibration constants will remain in memory If a subsequent StorE operation is performed previous calibration data will be lost The default parameters are as follows Par 2 P 4 8 1 8 8 00100100 3 P 1 0 P 00 4P 40 5 P 2 GAIN 1 6P 2 LCNR NOT CHANGED 7P 2 DEAD LOAD 0 mV V 0 0000 SPAN 2 mV V 2 0000 on weight display SET UP 2 2 b 96 2 1 17 2 65 SETPOINT 1 0 0200 2 4 0000
24. ower on ERRORS If an error occurs during the operation it will be displayed in the form Err xx where xx is the Erro code Program is halted Press O momentarily to acknowledge the error and proceed as indicated in the error operator response Errors may occur during set up programming power up and during operation VTDJB ERRORS ERROR POSSIBLE CAUSE ACTION TO BE TAKEN DISPLAY Err 01 SYSTEM ROM Faulty ROM Contact manufacturer Err 02 DATA RAM Faulty RAM Contact manufacturer Err 04 CALIBRATION DATA Faulty EEPROM Recalibrate or contact manufacturer Err 05 SCALE or A D CONVERTER Check scale loadcell cables contact manufacturers Err 15 System has been initialized due to power Zero scale failure or soft reset ERR90 During span calibration weight 15 not enough Recalibrate ERR91 During calibration procedure calibration lock jumper is inserted VT150 MANUAL 13 02 05 VT150UM 1 17 of 23 ay VISHAY Vishay Transducers Transducers VTI50 ERRORS Version B only ERROR POSSIBLE CAUSE ACTION TO BE TAKEN DISPLAY E 01 SYSTEM ROM Faulty ROM Contact manufacturer E 02 DATA RAM Faulty RAM Contact manufacturer E 04 CALIBRATION DATA Faulty EEPROM Recalibrate or contact manufacturer E 16 SYSTEM DATE TIME WRONG Enter new date time E 20 PRINTER IS NOT ON LINE Check printer cables Press P to retry or to abort COMMUNICATION ERROR Check connectio
25. press P The display shows WAIT for about 15 sec Then it shows CORNER o Tos e VT150 MANUAL 13 02 05 VT150UM 12 of 23 Ty VISHAY Vishay Transducers Transducers Place test weight in CORNER 2 and press P The display shows WAIT for about 15 sec Then it shows CORNER 3 Place test weight in CORNER 3 and press P The display shows WAIT for about 15 sec Then it shows CORNER 4 Place test weight in CORNER 4 and press P Press P to proceed If there is an error insufficient resolution wrong corner the dialogue does not proceed to the next corner As the corner adjustment is done with internal resolution a 10 of capacity corner load is sufficient However observe weights and measures regulations on eccentric loading ZERO CALIBRATION Dead load adjustment Press P to enter the dialogue The display shows E SCL Empty Scale Press to balance the dead load or press to exit to S CAL The display shows WAIT for about 5 sec and then it zeroes Press to exit to S CAL menu SPAN CALIBRATION Display shows SPAN Press togoto Zero or press to exit to S CAL Press P to enter the dialogue Place the calibration weight on the platform Display shows C where xxxxx Maximum capacity of scale Enter the calibration weight already on the platform using the NUMSCROLL EDIT procedure The display shows WAIT for about 5 sec then the calibration weight Repeat the SPAN procedure if t
26. rride the hardware lock in the DJB Press P to enter the displayed item The display shows 000000 Key in the PIN number and press P If the number entered was correct the display shows PASS briefly and returns to the calling menu If the number entered was incorrect the display shows FAIL briefly and returns to the calling menu The selected Lock or Unlock position is not automatically saved in EEPROM but following a subsequent STORE operation See Fn 40 for instructions on how to change PIN After the calibration of the unit is completed return to PIN dialogue to lock o Tos Tee VT150 MANUAL 13 02 05 VT150UM 11 of 23 ay VISHAY Vishay Transducers Transducers DIALOGUE Par Scale Parameters of VTDJB The dialogue PAR is used to select scale parameters When PAR is selected VT150 uploads the parameters in use in the connected VTDJB The parameters are defined as follows 2 P Position of decimal point Nr of decimal digits 0 4 3 P Display resolution 1 50 4 P Two first digits of weighing range 00 99 5 P Digital filter If entry is x then samples 2 0 4 0 2 for VTDJB 6 P A D converter speed 1 4 1 8 n 2 20 n 3 40 n 4 80 n conversions per second Nr of load cells The max conversions per second can not exceed 40 for VTDJB No motion samples If entry is x then samples 2 1 7 Autozero maintenance 0 NO YES Autozero on power up 0 NO YES Dual digital filter 0 NO 1 YES Reserved
27. selected display and keyboard operation is similar but with few specific limitations Selection of A or B or A B is performed by key and is indicated in the front panel by the Annunciators V1 V2 A B Both illuminated The A B mode has the following operational characteristics If any of the two scales is out of range the A B is out of range For the NO MOTION condition both scales must be stable For the CENTER OF ZERO condition both scales must be within 0 25 division Switching to Net mode is supported provided both scales are in Gross or Net mode If any of the scales is in NET mode it will automatically be switched to GROSS mode If any of the VTDJBs displays a message instead of weight this message will be displayed on the VT150 The Fn key is not operational in A B mode For approved scales if A B mode is used the scales must have the same display step VT150 MANUAL 13 02 05 VT150UM 1 8 of 23 ay VISHAY Vishay Transducers Transducers 5 SET UP AND CALIBRATION The chapter refers to both the VT150 and the VTDJB setting up The VTDJB is configured with Fn 49 procedure The VT150 is calibrated with Fn 46 procedure For setup and calibration of the VTDJB the unit must have been connected and the correct communication protocol installed in both the VTDJB and VT150 It is advisable to leave the default settings 9600 E 7 1 address A If there is no communication perform Fn 33 to auto tune the VT150 to the V
28. t be such that the instrument is not subject to excessive vibrations heat or humidity Avoid direct sunlight on the front of the instrument The unit has to be installed at the right height to allow an easy reading of the display and keyboard operation Wiring Use 4 x 0 34 mm screened for RS232C connection and 2x0 34 mm twisted pair and shielded for RS485A connection PANEL MOUNT All connections to the instrument are made through the rear panel connector Strain relieves are supplied with the connectors See connector diagram in Annex A STAINLESS STEEL Remove the rear panel by undoing the 4 screws Lift the rear panel carefully Insert cables via the cable glands Strip and connect the power leads to J1 the RS485 leads to J2 and RS232 leads to J3 See connector diagram in Annex A Connect the shields of the cables on the ground tag provided Re install the rear panel Tighten the screws until the rear panel touches the front panel Tighten the strain relief s to ensure a firm grip on the cables Power As the instrument is computer controlled it requires clean power for reliable operation Power supplied should come from a source that is isolated from other process equipment A main adapter of 7 5 10VAC 500 mA is recommended for operation of both the VT150 and VTDJB Power up When the unit is powered up it goes through a series of self tests after which the following is displayed in sequence Version code Revision da
29. te All display segments are turned on then off for 1 sec Then it goes into the operating mode If an error is encountered it will be displayed in the form E xx Refer to chapter 7 Errors for details CAUTION Do not run signal cables together with power cables Connect the shielding where indicated on the drawing only Never use a megger to check wiring Be sure the AC power socket outlet is properly protected For optimum EMC performance keep the length of shield inside the enclosure as short as possible VT150 MANUAL 13 02 05 VT150UM 1 6 of 23 Ty VISHAY Vishay Transducers Transducers 4 OPERATING MODES VT150 may be configured according to the applications to be operated in 5 different modes REMOTE DISPLAY CONTINUOUS WEIGHT INPUT The unit displays information received from the serial port s according to P 123 45 CR format RS485A may be received from port 1 Baud rate and data bits are programmable in SETUP 3 RS232C may be received from port 2 Baud rate is fixed at 1200 baud No or even parity and 7 or 8 data bits are programmable in SETUP 2 20 mA current loop passive may be connected to the RS232 port Tx to Tx and Tx to Rx SET UP REQUIREMENTS Port 1 9600 E 7 1 or Port 2 1200 E 7 1 Don t care 2d 17 the rest set to Zero 3t 01 3b 96 3d 17 Upon power up a search is performed by the unit for input data from each serial port If data is input from port 1 it will be displayed Else it w
30. us A CAL LOCK calibration lock hardware jumper inside the VTDJB is provided required by Weights amp Measures Authorities so that calibration can be sealed In addition to the CAL LOCK jumper an A T CNT Audit Trail Counter is provided for Weights amp Measures Authorities to check if any calibration attempt has been made since the last inspection The A T CNT 6 digits is incremented when a weight parameter is changed or a corner or scale calibration is attempted regardless if the changes are saved in EEPROM or not The position of the CAL LOCK jumper and the A T CNT number may be inspected with Fn 48 chapter 6 In addition a software PIN personal identification number logically OR connected is provided for the technical staff in order to avoid accidental scale calibration attempts If the CALLOCK is inserted access to PAR CAL INIT menus is limited to read operations only Any attempt to modify the metrological characteristics is denied and ERR 91 or ERR 33 is returned If the PINLOCK is activated access is limited to PIN STORE menus only Use PIN dialogue to set reset the pin lock While displayed each dialogue or submenu may be accessed with P Press to exit setup calibration procedure DIALOGUE PIN Enables activation or de activation of the PINLOCK Press to scroll through Unloc Loc Unlock deactivates the PIN so that entry to setup and calibration menus is possible However it does not ove
31. us information is transmitted continuously No handshake is required Data is output from Pin 3 Tx and Pin 5 GND SET UP REQUIREMENTS 1200 E 7 1 1 Don t care VT150 MANUAL 13 02 05 VT150UM 1 18 of 23 ay VISHAY Vishay Transducers Transducers 2 t 02 2 d 17 the rest don t care According to application DATA BLOCK COMPOSITION 123 45 DESCRIPTION WEIGHT Bit0 0 NORMAL 1 NO WEIGHT DISPLAY STATUS Bitl 0 GROSS 1 NET Bit2 0 1 AUTO ZERO Bit3 0 WITHIN RANGE 1 OUT OF RANGE Bit4 0 STANDSTILL 1 STANDSTILL Bit5 0 NORMAL 1 UNDER MIN WEIGHING RANGE Bit6 ALWAYS 1 TO OBTAIN PRINTABLE CHARACTERS Bit7 ZERO OR PARITY POLARITY OR WEIGHT 6 DIGITS DEPENDING ON D 500 N SET UP DIGITS INCLUDING DECIMAL POINT IF ANY SYNC CR 0d hex FOR SYNCHRONISATION PRINTER OUTPUT The weight and date time may be printed on A serial printer connected with DTR protocol See Annex A for connection details Several print possibilities maybe selected in VT150 SETUP 2 In addition two custom print formats may be created and downloaded to the VT150 via the serial interface RS232 Refer to function menu chapter 6 Fn 41 Fn 42 SET UP REQUIREMENTS 1 Application specific 2 2 t 01 Date time number weight 2 t 05 Gross Tare Net quadruple size 2 t 06 Single line Nr Gross Tare Net 2 t 20 Custom format 1 in Gross mode Custom format 2 in Net mode 3 34 02 04 05 The rest are application speci
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