Structure 3Tk2821/24; Terminal Assignment - Siemens 3TK28 Manual

Description of the individual safety relays
3.6 3TK28 safety relays with relay enabling circuits
3.6.4.3

Structure 3TK2821/24

3.6.4.4

Terminal assignment

A1
A2
Y1; Y1
13; 14
23; 24
33; 34
41; 42
56
Front view
Terminal
L/+
N/-
On button, feedback circuit
Enabling circuit 1, (NO)
Enabling circuit 1, (NO)
Enabling circuit 1, (NO) (3TK2821 only)
Signaling circuit 1, (NC) (3TK2821 only)
No. Meaning
①
Display LEDs
② Removable terminal blocks
③
Labels
Description
Manual, 07/2016, NEB926157502000/RS-AB/003
3TK28 safety relays