Siemens SIRIUS 3SK1 Manual page 4

Table of contents
4.3.6 Stop categories ...................................................................................................................... 35
4.3.7 Automatic start ....................................................................................................................... 36
4.3.8 Manual start ........................................................................................................................... 36
4.3.9 Monitored start ....................................................................................................................... 37
4.3.10 Two-hand operation/synchronism .......................................................................................... 38
4.3.11 Cascading .............................................................................................................................. 39
4.3.12 Startup testing ........................................................................................................................ 39
4.3.13 Connection of actuators ......................................................................................................... 40
4.3.14 Series connection of sensors ................................................................................................. 44
4.3.15 Use of magnetically operated switches ................................................................................. 45
5 3SK1 devices ........................................................................................................................................... 47
5.1 3SK1 standard ....................................................................................................................... 47
5.1.1 General information ............................................................................................................... 47
5.1.2 Applications ............................................................................................................................ 47
5.1.3 3SK1111 Standard basic unit instantaneous (with relay outputs) ......................................... 48
5.1.3.1 General information ............................................................................................................... 48
5.1.3.2 Function description ............................................................................................................... 48
5.1.3.3 Design .................................................................................................................................... 49
5.1.3.4 Terminal assignment .............................................................................................................. 50
5.1.3.5 Inputs ..................................................................................................................................... 51
5.1.3.6 Outputs ................................................................................................................................... 51
5.1.3.7 Display of the operating state ................................................................................................ 52
5.1.3.8 Function setting ...................................................................................................................... 52
5.1.4 3SK1112 Standard basic unit instantaneous (with semiconductor outputs) ......................... 55
5.1.4.1 General information ............................................................................................................... 55
5.1.4.2 Function description ............................................................................................................... 56
5.1.4.3 Design .................................................................................................................................... 57
5.1.4.4 Terminal assignment .............................................................................................................. 58
5.1.4.5 Inputs ..................................................................................................................................... 58
5.1.4.6 Outputs ................................................................................................................................... 59
5.1.4.7 Display of the operating state ................................................................................................ 59
5.1.4.8 Function setting ...................................................................................................................... 60
5.2 3SK1 Advanced ..................................................................................................................... 62
5.2.1 General information ............................................................................................................... 62
5.2.2 Applications ............................................................................................................................ 62
5.2.3 General device features ......................................................................................................... 63
5.2.4 Function description ............................................................................................................... 63
5.2.5 Functions ................................................................................................................................ 64
5.2.6 3SK1121 Advanced basic unit instantaneous (with relay outputs) ........................................ 65
5.2.6.1 Device features ...................................................................................................................... 65
5.2.6.2 Function description ............................................................................................................... 66
5.2.6.3 Design .................................................................................................................................... 66
5.2.6.4 Terminal assignment .............................................................................................................. 67
5.2.7 3SK1121 Advanced basic unit time-delayed (with relay outputs) .......................................... 68
5.2.7.1 Device features ...................................................................................................................... 68
5.2.7.2 Design .................................................................................................................................... 69
5.2.7.3 Terminal assignment .............................................................................................................. 70
5.2.8 3SK1122 Advanced basic unit instantaneous (with semiconductor outputs) ........................ 72
5.2.8.1 Device features ...................................................................................................................... 72
5.2.8.2 Design .................................................................................................................................... 73
5.2.8.3 Terminal assignment .............................................................................................................. 74
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SIRIUS 3SK1 safety relays
Manual, 06/2018, A5E02526190021A/RS-AD/004