Siemens SIRIUS 3SK1

3SK1 devices
5.2 3SK1 Advanced
3SK1 safety relays
Manual, 04/2013, A5E02526190021A/RS-AA/01
73
5.2.9.3 Terminal assignment
Terminal Explanation
A1 +
A2 -
IN1 Sensor channel 1
IN2 Sensor channel 2
PAR NO contact/NC contact evaluation
INS START pushbutton circuit
INF Feedback circuit
INK Cascading circuit / normal switching duty
T1 Test output 1 (for IN1, PAR)
T2 Test output 2 (for IN2, INF)
Q1 Instantaneous safety-related output 1 (switching to P potential, 24 V DC solid-
state)
Q2 Instantaneous safety-related output 2 (switching to P potential, 24 V DC solid-
state)
Qt1 Time-delayed safety-related output 1 (switching to P potential, 24 V DC solid-
state)
Qt2 Time-delayed safety-related output 2 (switching to P potential, 24 V DC solid-
state)