Table of contents
3TK28 safety relays
6
Manual, 07/2016, NEB926157502000/RS-AB/003
3.8.2
3TK2850 / 3TK2851 / 3TK2852 safety relay......................................................................142
3.8.2.1
Applications......................................................................................................................142
3.8.2.2
Description of function and connection information ...........................................................142
3.8.2.3
Structure 3TK285 .............................................................................................................143
3.8.2.4
Terminal assignment ........................................................................................................144
3.8.2.5
Display of the operating state ...........................................................................................145
3.8.2.6
State diagrams 3TK2850 / 3TK2851 / 3TK2852 ................................................................146
3.8.2.7
Technical data 3TK2850 / 3TK2851 / 3TK2852 .................................................................147
3.8.2.8
Connection examples 3TK2850 / 3TK2851 / 3TK2852 ......................................................156
3.8.3
3TK2853 safety relay .......................................................................................................158
3.8.3.1
Applications......................................................................................................................158
3.8.3.2
Description of function and connection information ...........................................................158
3.8.3.3
Structure 3TK2853 ...........................................................................................................159
3.8.3.4
Terminal assignment ........................................................................................................160
3.8.3.5
Display of the operating state ...........................................................................................161
3.8.3.6
State diagrams 3TK2853 ..................................................................................................162
3.8.3.7
Technical data 3TK2853 ...................................................................................................163
3.8.3.8
Connection examples 3TK2853 ........................................................................................166
3.8.4
3TK2856 / 3TK2857 safety relays .....................................................................................171
3.8.4.1
Applications......................................................................................................................171
3.8.4.2
Description of function and connection information ...........................................................171
3.8.4.3
Structure 3TK2856/57 ......................................................................................................172
3.8.4.4
Terminal assignment ........................................................................................................173
3.8.4.5
Display of the operating state ...........................................................................................174
3.8.4.6
State diagrams 3TK2856 / 3TK2857 .................................................................................175
3.8.4.7
Technical data 3TK2856 / 3TK2857 ..................................................................................176
3.8.4.8
Connection examples 3TK2856 / 3TK2857 .......................................................................179
4
Mounting ................................................................................................................................... 183
4.1
Warning notices ...............................................................................................................183
4.2
Mounting the device on a DIN rail .....................................................................................184
4.3
Mounting the device on a level surface .............................................................................185
4.4
Disassembling the device .................................................................................................186
5
Connection ................................................................................................................................ 189
5.1
Connection data for terminal blocks ..................................................................................189
5.2
Connecting terminal blocks ...............................................................................................190
5.3
Disconnecting ..................................................................................................................192
5.4
Plugging in terminal blocks ...............................................................................................194
6
Dimension drawings ................................................................................................................... 195
6.1
Dimension drawings 3TK28 ..............................................................................................195
7
Accessories............................................................................................................................... 205
