ry issue (for approval)
- - - LOAD MONITORING UNIT
LMU 116 VERSIONS 02x AND 02xC
INSTRUCTION MANUAL P/N 633.018 E
ISSUE 0
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Copyright
©
Vibro-Meter SA, 1998
All rights reserved
Published and printed by Vibro-Meter SA in Fribourg, Switzerland
The information contained in this document is subject to change without notice. This information shall not be used,
duplicated or disclosed, in whole or in part, without the express written permission of Vibro-Meter. LOAD MONITORING UNIT
LMU 116 VERSIONS 02x AND 02xC
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TABLE OF CONTENTS
LMU 116 VERSIONS 02x AND 02xC
INSTRUCTION MANUAL P/N 633.018 E
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v
PREFACE
VII
Purpose and Scope of This Manual
vii
Who Should Use This Manual ?
vii
Manual Organization
viii
Related Publications
viii
1
SAFETY
1-1
1.1
Symbols Used in This Manual
1-1
1.2
Important Remarks on Safety
1-2
1.2.1
Location of Safety Symbols in This Manual
1-2
1.3
Additional Remarks on Safety
1-3
2
INTRODUCTION
2-1
3
CONFIGURATION AND CALIBRATION
3-1
3.1
Configuration of the Load Monitoring Unit
3-2
3.1.1
Adaptation of the Monitor to the Supply Voltage
3-2
3.1.2
Selection of the Type of Wiring to the Strain Gauge
3-3
3.1.3
Designation of the Voltage and Current Inputs/Outputs
3-3
3.1.4
Configuration of the Detection Chains
3-4
3.1.5
Selection of the Pass Band
3-11
3.1.6
Selection of the Sensitivity Range
3-12
3.1.7
Combination of Signals on the Summing Circuit
3-12
3.1.8
Selecting the X-Coefficient Range
3-13
3.2
Calibration of the Load Monitoring Unit
3-14
3.2.1
Zero Adjustment on the Voltage Output
3-14
3.2.2
Zero Adjustment on the Current Output
3-14
3.2.3
Sensitivity Adjustment on the Voltage Output
3-14
3.2.4
Sensitivity Adjustment on the Current Output
3-15
3.2.5
Adjustment of the Ulevel1 and Ulevel2 Detection Thresholds
3-15
3.2.6
Adjustment of the Ulevel3 and Ulevel4 Detection Thresholds
3-17
TABLE OF CONTENTS
COVER PAGE
I
REVISION RECORD SHEET
II
COPYRIGHT
III
TABLE OF CONTENTS
V TABLE OF CONTENTS
LOAD MONITORING UNIT
LMU 116 VERSIONS 02x AND 02xC
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INSTRUCTION MANUAL P/N 633.018 E
3.2.7
Adjustment of the X-Coefficient (Summing Circuit)
3-18
3.3
Configuration of the taring circuitry
3-19
3.3.1
Add the TARE
3-19
3.3.2
Remove the TARE
3-19
3.3.3
Selection of the TARE signal
3-19
3.3.4
Connection diagram of the taring control circuitry
3-20
3.4
Customized Configuration
3-20
4
ASSEMBLY AND CONNECTION
4-1
4.1
General
4-1
4.2
Assembly of the Load Monitoring Unit
4-2
4.3
Connection of the Load Monitoring Unit
4-4
5
APPLICATIONS
5-1
5.1
Simple Weighing System with Adjustable Tare
5-1
5.2
Multi-Transducer Weighing System for Container Loading Bridges
5-6
A
MECHANICAL DRAWING
A-1
B
CONFIGURATION AND CALIBRATION FORM
B-1
C
DECLARATION OF EC CONFORMITY
C-1
PRODUCT DEFECT REPORT
DOCUMENTATION EVALUATION FORM LOAD MONITORING UNIT
PREFACE
LMU 116 VERSIONS 02x AND 02xC
INSTRUCTION MANUAL P/N 633.018 E
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PREFACE
Purpose and Scope of This Manual
This manual has all the necessary information regarding the installation, configuration, calibration
and connection of the LMU 116 load monitoring unit for strain gauge transducers.
Who Should Use This Manual ?
This manual is for users who want to install the load monitoring unit on lifting, weighing or other
equipment, to program it, calibrate it, connect it to the strain gauge and to a display and alarm
system and to use it to measure loads.
The user should have suitable technical training in mechanics and electronics (certificate of
professional ability or equivalent) so as to allow him to install and use this load monitoring unit. PREFACE
LOAD MONITORING UNIT
LMU 116 VERSIONS 02x AND 02xC
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INSTRUCTION MANUAL P/N 633.018 E
Manual Organization
This section gives an overview of the structure of the manual and the information contained within
it. Some information has been deliberately repeated in different sections of the document to minimize
cross-referencing and to facilitate understanding through reiteration.
The chapters of this manual are presented in a logical order. You should read those that are most
relevant to you and then keep the manual at hand for future reference.
The structure of the manual is as follows :
Chapter 1
:
Safety - Contains important information for your personal safety and the correct
installation of the load monitoring unit.
THIS CHAPTER SHOULD BE READ BEFORE STARTING INSTALLATION,
CONFIGURATION, CALIBRATION AND CONNECTION OF THE LOAD
MONITORING UNIT.
Chapter 2
:
Introduction - Contains the technical data sheet for the load monitoring unit.
This data sheet describes the monitor and gives its technical characteristics.
Chapter 3
:
Configuration and Calibration - Description of the programming and calibration
procedures for optimum functioning of the load monitoring unit.
Chapter 4
:
Assembly and Connection - Specifications for the assembly and connection
of the load monitoring unit to a strain gauge and a display and alarm system.
Chapter 5
:
Applications - Examples of applications for the load monitoring unit.
Appendix A
:
Mechanical Layout - Drawing of the LMU 116 load monitoring unit.
Appendix B
:
Configuration and Calibration Form - Contains a blank form which can be
copied and filled in during the configuration and calibration of the load monitoring
unit.
Appendix C
:
CE Conformity declaration - Document certifying that the LMU 116 load
monitoring unit conform to the EN-50081-2 and EN-50082-2 standards.
Product Defect Report - Allows the user to indicate problems observed on a
module/system, thus enabling our After-Sales Service department to repair the
unit as quickly as possible.
Documentation Evaluation Form - Allows the user to provide us with valuable
feedback on our documentation.
Related Publications
For additional information relating to the use of the LMU 116 load monitoring unit, the operator is
referred to the following document : LB 210 & LB 230 Instruction manual
P/N 632.005 LOAD MONITORING UNIT
SAFETY
LMU 116 VERSIONS 02x AND 02xC
INSTRUCTION MANUAL P/N 633.018 E
ISSUE 0
1-1
1
SAFETY
1.1
Symbols Used in This Manual
The following symbols and type styles may be used in this manual to highlight certain parts of the
text :
The NOTE symbol.
This is intended to draw the operators attention to complementary information or
advice relating to the subject being treated.
It introduces information enabling the correct and optimal functioning of the product to
be obtained.
The CAUTION safety symbol.
This is used to draw the operator s attention to information, directives,
procedures, etc. which, if ignored, may result in damage being caused to the
material being used.
The associated text describes the necessary precautions to take and the
consequences that may arise if the precautions are ignored.
THE WARNING SAFETY SYMBOL.
THIS INTRODUCES DIRECTIVES, PROCEDURES, PRECAUTIONARY
MEASURES, ETC. WHICH MUST BE EXECUTED OR FOLLOWED WITH UTMOST
CARE AND ATTENTION, OTHERWISE THE PERSONAL SAFETY OF THE
OPERATOR OR THIRD PARTIES MAY BE PUT AT RISK.
THE READER MUST ABSOLUTELY TAKE NOTE OF THE ACCOMPANYING TEXT,
AND ACT UPON IT, BEFORE PROCEEDING FURTHER. SAFETY
LOAD MONITORING UNIT
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1.2
Important Remarks on Safety
WARNING
THIS EQUIPMENT MUST ALWAYS BE EARTHED.
ALWAYS DISCONNECT THE MAINS SUPPLY BEFORE
UNDERTAKING ANY WORK ON THE SYSTEM.
THE OPERATOR OR THIRD PARTIES MAY BE
SERIOUSLY OR FATALLY INJURED BY
ELECTROCUTION IF THESE DIRECTIVES ARE
INGNORED.
CAUTION
This instruction manual should be read carefully and the
safety instructions observed before installing, calibration
or using the material described herein.
CAUTION
The micro-switch configurations for the versions 011
and 02x are different. Please follow the instruction given
in chapter 3 carefully. This is especially true when a LMU
116 Version 011 has to be replaced by a LMU 116 Version
02x.
1.2.1
Location of Safety Symbols in This Manual
The operator should also take note of the safety-related information found elsewhere in this
manual :
This symbol is found on the following pages :
1-2 ; 3-1; 3-2; 3-10; 4-6
This symbol is found on the following page :
1-2 LOAD MONITORING UNIT
SAFETY
LMU 116 VERSIONS 02x AND 02xC
INSTRUCTION MANUAL P/N 633.018 E
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1-3
1.3
Additional Remarks on Safety
For the correct and safe use of this instrument, it is essential that both operating and
servicing personnel follow generally accepted safety procedures in addition to safety
precautions specified in this manual. Specific warning and caution statements, where
they apply, will be found throughout the manual. These are highlighted by the
corresponding warning and caution symbols (described above).
The safety procedures should be communicated to all personnel who are liable to
operate the equipment described in this manual.
No modifications, transformations or repairs should be made to the equipment without
having first obtained the written permission of Vibro-Meter. Failure to observe this will
invalidate the warranty. SAFETY
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LMU 116 VERSIONS 02x AND 02xC
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INTRODUCTION
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INSTRUCTION MANUAL P/N 633.018 E
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2-1
2
INTRODUCTION
This chapter contains the technical data sheet of the LMU 116 load moni