3TK2826 safety relay 
Manual, 08/2007, GWA NEB 926 1579-02 DS 02 
3 
Table of contents 
1  Introduction................................................................................................................................................ 5 
1.1  Important information .....................................................................................................................5 
2  Safety instructions ..................................................................................................................................... 7 
2.1  Liability disclaimer..........................................................................................................................7 
2.2  Latest information and correction sheet.........................................................................................7 
3  Product family............................................................................................................................................ 9 
3.1  Order n...........................................................................................................................................9 
4  Product versions...................................................................................................................................... 11 
4.1  Device versions............................................................................................................................11 
5  Functions................................................................................................................................................. 13 
5.1  Functions......................................................................................................................................13 
6  Mounting.................................................................................................................................................. 15 
6.1  Mounting ......................................................................................................................................15 
7  Connecting .............................................................................................................................................. 17 
7.1  Connecting...................................................................................................................................17 
8  Operation................................................................................................................................................. 19 
8.1  3TK2826 with undelayed enabling circuits ..................................................................................19 
8.2  Connection terminals and their meanings (undelayed) ...............................................................20 
8.3  LEDs, keys and their meanings (undelayed)...............................................................................21 
8.4  3TK2826 with undelayed and delayed enabling circuits..............................................................23 
8.5  Connection terminals and their meanings (undelayed and delayed)...........................................23 
8.6  LEDs, keys and their meanings (undelayed and delayed) ..........................................................24 
9  Configuration / project engineering .......................................................................................................... 27 
9.1  General remarks ..........................................................................................................................27 
9.2  Functions......................................................................................................................................28 
9.3  Explanation of the device's functions...........................................................................................30 
9.4  Configuration (undelayed)............................................................................................................33 
9.5  Configuration and setting the delay time (undelayed and delayed).............................................35 
9.6  Displaying the configuration.........................................................................................................38