Siemens Sitrans LR250 - Page 5

iii
mmmmm
Table of Contents
PROFIBUS Ident Number .............................................................................................. 90
Powered Hours................................................................................................................ 90
Power-on Resets............................................................................................................. 90
Calibration Interval.......................................................................................................... 94
Communication.......................................................................................................................... 97
Device Address ............................................................................................................... 97
Remote Lockout .............................................................................................................. 97
Security........................................................................................................................................ 98
Write Locking ................................................................................................................... 98
Language..................................................................................................................................... 98
Appendix A: Alphabetical Parameter List ....................................................................99
Appendix B: Troubleshooting .......................................................................................101
Communication Troubleshooting ....................................................................................................101
Device Status Icons ........................................................................................................................... 102
General Fault Codes .......................................................................................................................... 104
Operation Troubleshooting .............................................................................................................. 108
Appendix C: Maintenance ............................................................................................ 110
Unit Repair and Excluded Liability ..................................................................................................110
Appendix D: Technical Reference ............................................................................... 111
Principles of Operation ......................................................................................................................111
Echo Processing ..................................................................................................................................111
Process Intelligence .................................................................................................................111
Echo Selection ...........................................................................................................................112
Measurement Range .........................................................................................................................116
Near Range .................................................................................................................................116
Far Range ....................................................................................................................................116
Measurement Response ...................................................................................................................116
Damping .................................................................................................................................................117
Loss of Echo (LOE) ...............................................................................................................................117
LOE Timer ....................................................................................................................................118
Fail-safe Mode ...........................................................................................................................118
Fail-safe Value ............................................................................................................................118
Maximum Process Temperature Chart ..........................................................................................119
Process Pressure/Temperature derating curves .........................................................................120
Horn Antenna or Wave Guide ................................................................................................121
1.5" and 2" Threaded Versions
.....................................................................121
2" (50 mm), 3" (80 mm) and 4" (100 mm) Flanged Versions: JIS 10 k
1)
.................121
2" (50 mm), 3" (80 mm) and 4" (100 mm) Flanged Versions: PN16
1)
.....................122
2" (50 mm), 3" (80 mm) and 4" (100 mm) Flanged Versions: PN40
1)
.....................122
2" (50 mm), 3" (80 mm) and 4" (100 mm) Flanged Versions: 150 lb
1)
.....................123
2" (50 mm), 3" (80 mm) and 4" (100 mm) Flanged Versions: 300 lb
1)
.....................123
Appendix E: Application Examples ............................................................................. 124
Liquid resin in storage vessel, level measurement ........................................................124
Horizontal vessel with volume measurement ..................................................................125
Application with Stillpipe .......................................................................................................126