Siemens SIRIUS 3SK1 Equipment Manual page 75

IN1
IN2
PAR
INS
INF
INK
T1
T2
13 - 14
23 - 24
37 - 38
47 - 48
State diagrams 3SK1121-xCB4y
SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays
Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005
Terminal
Sensor channel 1
Sensor channel 2
NO contact/NC contact evaluation
START pushbutton circuit
Feedback circuit
Cascading circuit
Test output 1 (for IN1, PAR)
Test output 2 (for IN2, INF)
Instantaneous safety-related output 1 (NO contact, relay contact)
Instantaneous safety-related output 2 (NO contact, relay contact)
Delayed safety-related output 1 (NO contact, relay contact)
Delayed safety-related output 2 (NO contact, relay contact)
3SK1121-xCB4y autostart
A1/A2
INF
(feedback circuit)
IN1/IN2
(sensor circuit)
or
INK
Safety-related
output
Safety-related
output
tv
Explanation
85 ms 35 ms
tv
3SK1 / 3RQ1 devices
5.2 3SK1 Advanced
35 ms
75