Terminal Assignment - Siemens 3TK28 Manual

Description of the individual safety relays
3.8 3TK28 safety relays with contactor relay enabling circuits
3.8.3.4

Terminal assignment

A1
A2
Y11; Y12
Y21; Y22
Y35
Y32
Y33; Y34
1
2
3
4
13, 14
Auxiliary contact units
1)
Figure 3-75
160
Terminal
L/+
N/-
Channel 1, EMERGENCY STOP or position switch
Channel 2, EMERGENCY STOP or position switch
with / without cross-circuit detection
Parameterization "single-channel sensor connection"
ON button, feedback circuit
Cascade input
Safe solid-state output (24V DC / 1A)
Power supply for external switches
Input for functional switching
Contact units
Contact units
Description
Manual, 07/2016, NEB926157502000/RS-AB/003
3TK28 safety relays