Beckhoff ELX3351, Руководство по эксплуатации

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Table of contents
ELX3351 3 Version: 1.3.1
Table of contents
1 Foreword .................................................................................................................................................... 5
1.1 Notes on the documentation........................................................................................................... 5
1.2 Safety instructions .......................................................................................................................... 6
1.3 Documentation Issue Status........................................................................................................... 7
1.4 Marking of ELX terminals................................................................................................................ 8
2 Product overview..................................................................................................................................... 11
2.1 ELX3351 - Introduction ................................................................................................................. 11
2.2 Technical data .............................................................................................................................. 12
2.3 Intended use ................................................................................................................................. 13
3 Mounting and wiring ............................................................................................................................... 14
3.1 Special conditions of use for ELX terminals ................................................................................. 14
3.2 Installation notes for ELX terminals .............................................................................................. 14
3.3 Arrangement of ELX terminals within a bus terminal block .......................................................... 16
3.4 Installation position and minimum distances ................................................................................ 19
3.5 Installation of ELX terminals on mounting rails............................................................................. 20
3.6 Connection.................................................................................................................................... 21
3.6.1
Connection system........................................................................................................... 21
3.6.2 Wiring ............................................................................................................................... 22
3.6.3 Proper line connection ..................................................................................................... 23
3.6.4 Shielding and potential separation ................................................................................... 23
3.6.5 ELX3351 - Contact assignment ....................................................................................... 24
4 Basic function principles........................................................................................................................ 26
4.1 EtherCAT basics ........................................................................................................................... 26
4.2 Basic principles of strain gauge technology.................................................................................. 26
5 Parameterization and programming ...................................................................................................... 33
5.1 Basics of the measurement functions........................................................................................... 33
5.1.1
General notes .................................................................................................................. 33
5.1.2 Block diagram .................................................................................................................. 35
5.1.3 Software filter ................................................................................................................... 35
5.1.4 Dynamic filter ................................................................................................................... 37
5.1.5 Calculating the weight ...................................................................................................... 38
5.2 Application notes .......................................................................................................................... 38
5.2.1
Wiring fail indication ......................................................................................................... 38
5.2.2 InputFreeze ...................................................................................................................... 38
5.2.3 Gravity adaptation ............................................................................................................ 39
5.2.4 Idling recognition .............................................................................................................. 40
5.2.5 Official calibration capability............................................................................................. 40
5.3 Calibration and compensation ...................................................................................................... 40
5.3.1
Sensor calibration ............................................................................................................ 41
5.3.2 Self-calibration ................................................................................................................. 43
5.3.3 Taring ............................................................................................................................... 44
5.3.4 Overview of commands.................................................................................................... 44
5.4 Notices on analog specifications .................................................................................................. 45
5.4.1
Full scale value (FSV) ...................................................................................................... 45
5.4.2 Measuring error/ measurement deviation ........................................................................ 45
5.4.3 Temperature coefficient tK [ppm/K] ................................................................................. 46
5.4.4 Single-ended/differential typification ................................................................................ 47