Measurement Systems MSI-3750 User manual

ELECTRONIC
DIGITAL WEIGHT
INDICATOR
User
Guide
Quality
Industrial
Weighing
and Force
Measurement
Equipment
Measurement
Systems
International

M E A S U R E M E N T S Y S T E M S I N T E R N A T I O N A L
Page 2 MSI-3750 Digital Weight Indicator ◆ User Guide
TABLE OF CONTENTS
INTRODUCTION....................................................3
3750 Display.......................................................3
3750 Front Panel ................................................ 4
Features .............................................................5
Batteries (Option) ...............................................6
Load Cell Hookup ............................................... 7
SECTION 1 – SCALE OPERATION ...................... 8
Power .................................................................8
Zero ....................................................................9
Tare..................................................................... 9
Setup Tare ........................................................ 13
Net/Gross .........................................................16
Units .................................................................16
Setup Units ....................................................... 17
Peak Hold (Function Key Option) ..................... 18
Print .................................................................. 19
Test ................................................................... 19
SECTION 2 – FUNCTION KEYS ......................... 20
Setup Function Keys ........................................20
SECTION 3 – ID CODES..................................... 22
ID Code Organization ....................................... 22
Using ID Codes ................................................24
Setup ID Codes ................................................ 30
ID Code String 1 & String 2 .............................. 33
SECTION 4 – TOTAL / STATISTICS....................35
Total .................................................................. 35
Auto Total..........................................................36
Total Menu (Setup Total)................................... 37
View Total .........................................................40
Clear All Totals.................................................. 42
Statistics (Option) ............................................. 42
Definitions And Formulas.................................. 43
Using Statistics ................................................. 44
SECTION 5 – 3750 METER SETUP.................... 46
Main Setup Menu .............................................46
Filter.................................................................. 47
LCD Contrast.................................................... 48
Real Time Clock/Calendar................................ 49
Setup Power Menu ........................................... 50
LCD Backlight................................................... 51
Bargraph Menu................................................. 52
Lock .................................................................. 54
SECTION 6 – SET POINTS................................. 58
Setup Set Points Menu..................................... 58
Set Point 1 Through Set Point 8 ....................... 60
Using Set Points ............................................... 62
Enabling / Disabling Set Points ........................66
Using The MSI 3750 As A Grading Scale ......... 67
Relay Output Option ......................................... 69
Relay Applications ............................................ 70
Logic Output (Set Point 8) ................................72
Test Set Point Relays ....................................... 73
SECTION 7 – COMMUNICATION PORTS.......... 74
Electrical Conformance .................................... 74
Comm Port Cabling .......................................... 75
Data Configuration............................................ 78
Output Control .................................................. 78
Comm Port Setup Menu ................................... 80
Comm Port Parameters Menu.......................... 81
Printer / Output Formatting ............................... 85
Example Printer Formatting.............................. 88
Programming The End Of Line String ..............91
Editing The Print String..................................... 93
General Text/Control Character Entry ..............94
Serial Output “@” Commands ..........................95
Computer Operation ....................................... 107
SECTION 8 – SCALE CALIBRATION................ 112
Calibrate General Information ........................ 112
Enable Calibration .......................................... 112
Calibrate Setup Menu..................................... 114
To Select Legal Standard ............................... 114
To Calibrate (Standard Calibration) ................ 116
Calibration Error Messages ............................ 118
Reset Calibration ............................................ 120
Reset All ......................................................... 120
Initial Calibration ............................................. 122
To Enable/Disable AZM .................................. 125
To Adjust The Motion Band............................. 127
Coarse Zero.................................................... 128
Raw Counts .................................................... 129
Calibration Flowchart......................................131
APPENDIX A – SPECIFICATIONS & OPTIONS 132
Specifications .................................................132
Options ........................................................... 133
Meter Mounting Bracket .................................135
APPENDIX B – ASCII TABLE ............................136
APPENDIX C – MENU MAPS............................ 137
APPENDIX D – WIRING CONNECTIONS ........ 141
Load Cell Connections ...................................141
RS-232 Connections ......................................141
2nd Comm Port & RS-485 Connections......... 142
Auxiliary Digital Input ...................................... 142
Relay Option Board Connections ...................143
The MSI Limited Warranty .................................144

MSI-3750 Digital Weight Indicator ◆ User Guide Page 3
M E A S U R E M E N T S Y S T E M S I N T E R N A T I O N A L
INTRODUCTION
The Measurement Systems International MSI 3750 Weigh Meter repre-
sents a new level of technology and performance in the Scale Industry. A
16 bit Microcontroller and 20 bit A/D Converter coupled with an alpha-
numeric display gives unprecedented versatility and programmability.
The large, backlit, alpha-numeric display provides precise, unambiguous
indication of operating modes such as Net, Gross, or Total. Digital
calibration makes maintaining the scale a snap, and the single board,
marine-proof (NEMA 4) construction makes for a rugged and reliable
scale. An option card can be plugged in which provides 7 set point relays,
a Logic Output, and an additional isolated RS232 port or RS-485 port. A
Statistics option is available for process or production monitoring of up to
350 ID Codes. The 3750 is designed to meet or exceed the requirements
of all regulatory agencies.
3750 DISPLAY
ozlb
25
∑
AUTO
SETUP
RF LINK
REMOTE
da
PM
N
0 50 75 100
%
METRIC
LEVEL %
RF LEVEL
0
+
-
Motion Indicator
Center of Zero
Low Battery Warning
21 Segment Bargraph
ModeAnnunciators
8 Character (0.5")Alpha-Numeric Message Display
UnitsAnnunciators
6 Digit Weight Display (0.9")

M E A S U R E M E N T S Y S T E M S I N T E R N A T I O N A L
Page 4 MSI-3750 Digital Weight Indicator ◆ User Guide
Measurement Systems
International
SETPOINT TOTAL
12
MSI-3750
SEATTLE WASHINGTON U.S.A.
TOTAL VIEWTOTALSETPOINTSID # UNITS
max max
III n =5,000 / III L n =10,000
F1
EXIT
F2 UV F3 F4 F5
TARE
T
ASCII
5
MNO
ENTER
SETUP
EXIT
!
POWER
ZERO
0
CLR
9
@YZ
B/G
INSERT
NET/GROSS
ALPHA
Aa
1
1
ABC
0
SPACE
6
PQR
7
STU
2
DEF
PRINT
3
GHI
4
JKL
8
VWX
Programable Function Keys
Alpha-numeric Keys
3750 FRONT PANEL

MSI-3750 Digital Weight Indicator ◆ User Guide Page 5
M E A S U R E M E N T S Y S T E M S I N T E R N A T I O N A L
FEATURES • Designed to meet or exceed all US and international standards.
• 6 Large, .9” digits for clear weight readings from a distance.
• Up to 350 built-in ID Codes with separate Alphanumeric Names,
Tare, Mode. ID Codes are addressed by any customer given
name.
• Easy to read annunciation of ID Names and Menu Prompts are
provided on eight .5” alphanumeric Characters.
• Full RS232 output formatting offers exceptionally versatile data
output. Weight data can be printed in any desired way, the
customer can add any alpha characters and/or printer formatting
commands, including formatting for Bar Code printers.
• Analog bargraph provided for relative to full-scale weight
indication. Also used for tilt indication with the Magnum Fork
Lift System.
• Display illumination uses rugged, long life, LED back-lighting
coupled with a transflective LCD to provide optimum display
contrast under all ambient conditions from full sunlight to total
darkness. Operation is light-sensing automatic or manually set.
• Versatile power input options: AC Only (90-260 VAC 45-65 Hz),
9-36 VDC Input, 18-60VDC and two D Cell Battery operation.
Accessory Power Supplies are available to allow 250VDC
operation as well.
• Easy to maintain: Full digital calibration assures reliable, repeat-
able measurements.
• Selectable for lb, kg, g, tons, metric tons, ounces, and per cent
(some units and /or units switching may be prohibited in legal for
trade units).
• Automatic or manual weight totalization for logging total
throughput.
• Complete Marine sealing ensures reliable operations under harsh
conditions. Rugged cast aluminum package is coated to resist
corrosive atmospheres. Meets all requirements of NEMA 4 and
IP65.
• 8 set points standard – programmable for any in-range weight for
operator alerts or process control. Optional set point Relay
outputs are available for conveyor belt or any other process
control.