Siemens 3TK28 Manual page 30

Description of the individual safety relays
3.6 3TK28 safety relays with relay enabling circuits
Input data (L1-L2-L3)
Measurement/motor voltage
Input resistances
Reponse value Uan
Standstill time ts
Figure 3-2
30
V Max. 690 AC (IEC), max. 600 AC (UL)
kΩ Approx. 400
mV Approx. 20 ... 400; settable
s 0.2 ... 6, settable
Derating table
Manual, 07/2016, NEB926157502000/RS-AB/003
3TK28 safety relays