IFM LT30 Series - Default Chapter; Table of Contents

2
Contents
1 Preliminary note ...................................................................................................4
1.1 Symbols used ................................................................................................4
2 Safety instructions ...............................................................................................5
3 Functions and features ........................................................................................6
3.1 Application area ............................................................................................6
3.2 Restriction of the application area ................................................................6
4 Getting started .....................................................................................................6
4.1 Example configuration 1 ................................................................................7
4.2 Example configuration 2 ................................................................................8
5 Function ...............................................................................................................9
5.1 Measuring principle level ...............................................................................9
5.2 Measuring principle temperature ...................................................................9
5.3 Operating principle / features of the unit ......................................................10
5.3.1 Operating modes ................................................................................10
5.3.2 Notes on the integrated overflow prevention ...................................... 11
5.4 Display functions ......................................................................................... 11
5.5 Analogue function ........................................................................................12
5.5.1 Level measurement with overflow prevention ...................................12
5.5.2 Level measurement without overflow prevention ...............................14
5.5.3 Temperature measurement ................................................................15
5.6 Switching functions ......................................................................................17
5.7 Offset for indicating the real level in the tank ...............................................18
5.8 Defined state in case of a fault ....................................................................18
5.9 Extreme value memory ................................................................................18
5.10 IO-Link .......................................................................................................18
6 Installation..........................................................................................................19
6.1 Installation instructions for operation with overflow prevention ..................20
6.2 Installation instructions for operation without overflow prevention ..............21
6.2.1 Installation in the inactive zone ...........................................................21
6.2.2 Installation in the active zone .............................................................22
6.3 Other installation notes ................................................................................23
6.3.1 Marking of the installation height .......................................................23
7 Electrical connection ..........................................................................................24