Siemens SIRIUS 3SK1

Terminal Explanation
IN1 Sensor channel 1
IN2 Sensor channel 2
PAR NO contact/NC contact evaluation
INS START pushbutton circuit
INF Feedback circuit
INK Cascading circuit
T1 Test output 1 (for IN1, PAR)
T2 Test output 2 (for IN2, INF)
Q1 Safety-related output 1
(switching to P potential, 24 V DC)
Q2 Safety-related output 2
(switching to P potential, 24 V DC)
Q3 Safety-related output 3
(switching to P potential, 24 V DC)
QM1 Semiconductor signaling circuit 1
(switching to P potential, 24 V DC)
State diagrams 3SK1122-xAB40
INF (feedback
circuit)
A1/A2
Safety-related
outputs
Signaling
output
3SK1122-xAB40 autostart
Inputsoutputs
IN1/IN2
(sensor circuit)
or
INK
30 ms
0 ms
80 ms
3SK1 / 3RQ1 devices
5.2 3SK1 Advanced
SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays
Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005 79