
Table of contents
1. General .....................................................................................................21
1.1 How to use this manual..................................................................................21
1.2 Intended use ..................................................................................................21
1.3 Sings and symbols.........................................................................................21
1.4 Safety advice .................................................................................................22
2. Characteristics ........................................................................................23
2.1 Fundamentals ................................................................................................23
2.2 Application examples.....................................................................................23
2.3 Outputs ..........................................................................................................24
2.3.1 Digital transistor output:.........................................................................24
2.3.2 Analogue output (resolution 16 bit) selectable: .....................................24
3. Setting into operation .............................................................................25
3.1 Installation instructions...................................................................................25
3.2 Operation .......................................................................................................25
3.3 Terminal arrangement....................................................................................26
3.4 Connection scheme .......................................................................................27
3.5 Adjustment.....................................................................................................28
4. Programming (Teach In) .........................................................................29
4.1 Set programming ...........................................................................................29
4.2 Teach in "min" position ..................................................................................29
4.3 Teach in "max" position .................................................................................30
4.4 Quit programming ..........................................................................................30
4.5 Check function ...............................................................................................31
5. Error messages .......................................................................................32
5.1 LED - Indications............................................................................................32
5.2 Replacing the SK20.2 ....................................................................................33
6. Shipment, Storage, Disposal .................................................................34
6.1 Shipment........................................................................................................34
6.2 Storage ..........................................................................................................34
6.3 Disposal .........................................................................................................34
7. Technical data .........................................................................................35
8. List of Figures..........................................................................................36
8026616/2021-03-11 • Subject to change without notice • SICK AG • Waldkirch • Germany • www.sick.com