Siemens SIRIUS 3SK1 Equipment Manual

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)
13 - 14 Instantaneous safety-related output 1 (NO contact, relay contact)
23 - 24 Instantaneous safety-related output 2 (NO contact, relay contact)
37 - 38 Delayed safety-related output 1 (NO contact, relay contact)
47 - 48 Delayed safety-related output 2 (NO contact, relay contact)
State diagrams 3SK1121-xCB4y
INF
(feedback circuit)
A1/A2
3SK1121-xCB4y autostart
InputsOutputs
IN1/IN2
(sensor circuit)
or
INK
Safety-related
output
Safety-related
output
tv
85 ms
35 ms
35 ms
tv
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 75

Siemens SIRIUS 3SK1 Specifications

General

Brand	Siemens
Model	SIRIUS 3SK1
Category	Relays
Language	English