SICK LE20 Betriebsanleitung Seite 285

Operating Instructions
LE 20
8 008 685/Q913/2007-05-21
Contents
Contents
1 1 1 1 1 Symbols and references used in this document .................. 2 8 7
2 2 2 2 2
Safety notes .............................................................................................. 2 8 7
2 . 1 Specified use of the device ......................................................... 2 8 7
2 . 2 Safety regulations ................................................................................ 2 8 8
2.3 General safety instructions and protective measures 2 8 9
2.3.1 Ensuring the protective function of LE 20
and LE 20 Muting ........................................................... 2 8 9
2.3.2 Ensuring the protective function,
LE 20 Muting ...................................................................... 2 9 0
2.3.3 Ensuring the protective function when
using LE 20 with C 2000, M 2000 or
single-beam photoelectric safety switches ... 2 9 1
2.3.4 Ensuring the protective function when
using LE 20 with C 2000 or M 2000 .............. 2 9 1
2.3.5 Ensuring the protective function when
using LE 20 with single-beam
photoelectric safety switches .................................. 2 9 1
3 3 3 3 3 Product description .............................................................................. 2 9 4
3 . 1 System design ....................................................................................... 2 9 4
3 . 2 Design and operation of the device ...................................... 2 9 5
3 . 3 Device functions of the LE 20 and LE 20 Muting ....... 2 9 6
3.3.1 Test functions ................................................................... 2 9 6
3 . 3 . 2 Restart interlock (RES) ................................................. 2 9 8
3 . 3 . 3 External device monitoring (EDM) ...................... 2 9 8
3 . 4 Device functions of the LE 20 Muting ................................. 2 9 8
3.4.1 Muting mode ...................................................................... 2 9 9
3 . 4 . 2 Layout of the muting sensors ................................ 3 0 0
3.4.3 Override ................................................................................. 3 0 1
3 . 5 System components .......................................................................... 3 0 2
3 . 6 Display elements .................................................................................. 3 0 5
4 4 4 4 4
Installation ................................................................................................ 3 0 6
4 . 1 IP 20 version .......................................................................................... 3 0 6
4 . 2 IP 65 version .......................................................................................... 3 0 6
5 5 5 5 5 Electrical installation .......................................................................... 3 0 7
6 6 6 6 6 Commissioning ........................................................................................ 3 1 1
6 . 1 General overview of the commissioning procedure ... 3 1 1
6 . 2 Functional test ....................................................................................... 3 1 1
6 . 3 Inspection of the LE 20 .................................................................. 3 1 2
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