Vishay VT300 User manual

VT300
Weighbridge Indicator
Technical Manual
Revision A4, September 2006 Doc # TM-VT300-EN

Table of Contents
VT300 Technical Manual, Rev. A4 ii Doc # TM-VT300-EN
Table of Contents
TABLE OF CONTENTS ................................................................................ II
TABLE OF FIGURES .................................................................................VII
LEGAL NOTICE ...................................................................................... VIII
WARRANTY.............................................................................................. IX
SAFETY INSTRUCTIONS .............................................................................X
DECLARATION OF CONFORMITY .............................................................XII
ABOUT THIS DOCUMENT ....................................................................... XIII
1TECHNICAL SPECIFICATIONS......................................................... 15
1.1 GENERAL ........................................................................................... 15
1.2 ANALOG INPUT .................................................................................... 16
1.3 ANALOG OUTPUT (OPTIONAL) ................................................................... 16
1.4 DIGITAL INPUT .................................................................................... 17
1.5 DIGITAL OUTPUTS ................................................................................ 17
2INSTALLATION .............................................................................. 18
2.1 SITE REQUIREMENTS ............................................................................. 18
2.2 MOUNTING THE INDICATOR ...................................................................... 18
2.2.1 Desktop Model (Aluminum Enclosure).................................................. 18
2.2.2 Wall-Mount Model (Stainless Steel Enclosure) ....................................... 19
2.3 CONNECTING LOAD CELLS ....................................................................... 20
2.3.1 Desktop Model (Aluminum Enclosure).................................................. 20
2.3.2 Wall-Mount Model (Stainless Steel) ..................................................... 21
2.3.3 Load Cell Operating Parameters.......................................................... 21
2.4 SERIAL CONNECTIONS............................................................................ 22
2.4.1 Printer and PC Cables........................................................................ 22
2.4.2 RS485 Cable Connections .................................................................. 22
2.5 CONNECTING POWER ............................................................................. 23

Table of Contents
VT300 Technical Manual, Rev. A4 iii Doc # TM-VT300-EN
3DISPLAY, KEYS AND MENUS........................................................... 24
3.1 THE DISPLAY ...................................................................................... 24
3.1.1 Status Annunciators.......................................................................... 25
3.1.2 Common Messages Shown on the Display ............................................ 25
3.2 FRONT PANEL KEYS ............................................................................... 26
3.2.1 Using Keys to Perform Operations ....................................................... 26
3.2.2 Using Keys to Enter Information ......................................................... 27
3.3 THE MENU ......................................................................................... 27
3.3.1 Using the Menu ................................................................................ 27
3.3.2 Menu Structure and Options Summary................................................. 28
Main Menu.................................................................................................................... 28
Main > WEIGH .............................................................................................................. 28
Main > VFILE ................................................................................................................ 29
Main > TFILE ................................................................................................................ 29
Main > MISC................................................................................................................. 30
Main > SYSTEM............................................................................................................. 30
Main > SYSTEM (cont.) .................................................................................................. 31
4CALIBRATION ................................................................................ 32
4.1 SELECTING CALIBRATION METHOD ............................................................. 32
4.2 CALIBRATION WITH STANDARD WEIGHTS...................................................... 33
4.2.1 Zero (Dead-Load) Calibration ............................................................. 33
4.2.2 Span Calibration............................................................................... 33
4.3 ELECTRONIC CALIBRATION (E-CAL) ........................................................... 34
4.3.1 Calculating Calibration Values............................................................. 34
4.3.2 Setting Zero Calibration (Dead-Load) Value.......................................... 35
4.3.3 Span (Max. Capacity) Calibration ........................................................ 35
4.4 STORING CALIBRATION DATA ................................................................... 35
4.5 LOCKING AND UNLOCKING CALIBRATION....................................................... 36
4.5.1 Sealing Indicator Enclosure with Stickers.............................................. 36
4.5.2 Securing Load Receptor..................................................................... 37
4.5.3 Checking Seal Status and Audit Trail Counter........................................ 37
5GENERAL SYSTEM PARAMETERS..................................................... 38

Table of Contents
VT300 Technical Manual, Rev. A4 iv Doc # TM-VT300-EN
5.1 EDITING PARAMETERS ............................................................................ 38
5.2 SYSTEM >1/2CAL >PAR MENU ............................................................ 39
5.2.1 Dual-scale Connecting And Parameter Settings ..................................... 41
5.3 SYSTEM >SET >OPER ...................................................................... 41
6SERIAL COMMUNICATION .............................................................. 43
6.1 SERIAL PORTS CONFIGURATION................................................................. 43
6.1.1 RS232 Serial Port ............................................................................. 43
6.1.2 RS485 Serial Port ............................................................................. 43
6.2 SETTING PORT OUTPUT .......................................................................... 44
6.2.1 Setting Port 1 Output ........................................................................ 44
6.2.2 Setting Port 2 Output ........................................................................ 45
6.3 OUTPUT FORMATS................................................................................. 46
6.3.1 Continuous Weight Output ................................................................. 46
6.3.2 Continuous Weight Output with Dual Scale Operation............................. 47
6.3.3 Continuous Weight With Tare ............................................................. 47
6.3.4 Alibi Transmit................................................................................... 49
6.3.5 Alibi Mode Commands ....................................................................... 49
Transmit Displayed Weight ............................................................................................. 49
Command “ZERO” ......................................................................................................... 49
Character for Print-on-Demand ....................................................................................... 50
6.3.6 EDP Protocol Output.......................................................................... 50
6.3.7 Remote Printer Output....................................................................... 51
6.3.8 Master-Slave Protocol........................................................................ 51
Master-Slave Commands................................................................................................ 53
Gross-Tare-Net Weight Transmission ............................................................................... 56
6.4 DEFAULT TICKET FORMATS ...................................................................... 57
6.5 CUSTOM TICKET FORMATS ....................................................................... 58
6.5.1 Creating a Custom Ticket Format ........................................................ 58
6.5.2 Downloading and Uploading Custom Ticket Formats............................... 60
7OUTPUTS AND DIGITAL INPUT....................................................... 62
7.1 SPECIFICATIONS .................................................................................. 62
7.1.1 Digital Outputs................................................................................. 62

Table of Contents
VT300 Technical Manual, Rev. A4 vDoc # TM-VT300-EN
7.1.2 Analog Outputs ................................................................................ 62
7.1.3 Digital Input (Tilt Switch)................................................................... 62
7.2 CONNECTING DIGITAL OUTPUTS AND TILT SWITCH .......................................... 63
7.3 SETTING THRESHOLDS FOR DIGITAL SETPOINTS.............................................. 63
7.3.1 Setpoint Options............................................................................... 64
Setpoint On/Off Combinations.........................................................................................64
7.4 CONFIGURING ANALOG OUTPUT................................................................. 65
7.4.1 Connecting PCB and Setting Jumper.................................................... 65
7.4.2 Setting Analog Output Parameters ...................................................... 66
7.4.3 Calibrating D/A Converter .................................................................. 67
7.5 USING THE TILT SWITCH......................................................................... 68
7.5.1 Tilt Switch Options............................................................................ 68
8SERVICE OPERATIONS AND TESTING ............................................. 69
8.1 SERVICE OPERATIONS ............................................................................ 69
8.1.1 Setting and Changing System and Operator Password (SYSTEM > PIN) .... 69
8.1.2 Setting Date, Time and Serial Number (SYSTEM > DATE)....................... 70
8.1.3 Resetting Parameters (INIT)............................................................... 70
8.1.4 Displaying Remaining Battery Capacity (WEIGH > BATTERY)................... 71
8.1.5 Checking Calibration Seal (MISC > 1/2OIML)........................................ 71
8.1.6 Viewing Load Cell mV (TEST > CVM) ................................................... 71
8.1.7 Viewing A/D Count (TEST > A/D)........................................................ 71
8.1.8 Locking and Unlocking Keys ............................................................... 72
8.2 TESTING THE INDICATOR......................................................................... 72
8.2.1 Testing ROM/RAM Integrity (TEST > MEM) ........................................... 72
8.2.2 Testing the Keypad and Display (TEST > KBD, LCD) .............................. 73
8.2.3 Testing Digital Input and Outputs (TEST > I/O)..................................... 73
8.2.4 Testing Data Received on Both Serial Ports (TEST > PORT)..................... 74
9SPECIAL WEIGHBRIDGE OPERATIONS ........................................... 75
9.1 CUSTOMIZING WEIGHBRIDGE DESCRIPTIONS ................................................. 75
9.2 BATCH WEIGHING ................................................................................ 76
10 TROUBLESHOOTING....................................................................... 78