Terminal Assignment - Siemens 3TK28 Manual

3.8.4.4

Terminal assignment

A1
A2
1
2
3
4
13; 14
Auxiliary contact units
1)
Figure 3-87
3TK28 safety relays
Manual, 07/2016, NEB926157502000/RS-AB/003
Terminal
L/+
N/-
Cascade input
Safe solid-state output (24V DC / 1A)
Power supply for external switches
Input for functional switching
Contact units (see contact units graphic)
Contact units
Description of the individual safety relays
3.8 3TK28 safety relays with contactor relay enabling circuits
Description
173