Siemens 3TK28 - Structure 3 TK2821;24; Terminal Assignment

Description of the individual safety relays
3.6 3TK28 safety relays with relay enabling circuits
3TK28 safety relays
56 Manual, 07/2016, NEB926157502000/RS-AB/003
3.6.4.3
Structure 3TK2821/24
Front view
No.
Meaning
①
Display LEDs
②
Removable terminal blocks
③
Labels
3.6.4.4
Terminal assignment
Terminal
Description
A1
L/+
A2
N/-
Y1; Y1
On button, feedback circuit
13; 14
Enabling circuit 1, (NO)
23; 24
Enabling circuit 1, (NO)
33; 34
Enabling circuit 1, (NO) (3TK2821 only)
41; 42
Signaling circuit 1, (NC) (3TK2821 only)