Siemens 3TK28 - Structure 3 TK2825; Terminal Assignment

Description of the individual safety relays
3.6 3TK28 safety relays with relay enabling circuits
3TK28 safety relays
Manual, 07/2016, NEB926157502000/RS-AB/003
73
3.6.6.4
Structure 3TK2825
Front view
No.
Meaning
①
Display LEDs
②
Removable terminal blocks
③
Labels
3.6.6.5
Terminal assignment
Terminal
Description
A1
L/+
A2
N/-
Y10; Y11
Channel 1, (1-channel)
Y11; Y12
Channel 1, (2-channel)
Y21; Y22
Channel 2, (2-channel)
Y33; Y34
On button, feedback circuit
Y43; Y44
Switchover between automatic start and monitored start
13 - 14
Enabling circuits, (NO)
23 - 24
33 - 34
41 - 42
Enabling circuits, (NC contacts)
51 - 52