Siemens SIRIUS 3SK1

3SK1 safety relays
Manual, 04/2013, A5E02526190021A/RS-AA/01
187
Display and diagnostics
12
12.1 LED display
The LED indications of the Advanced safety relays are shown in the tables below. You can
find the LED indications of the Standard safety relays in the chapter "Display of the operating
state (Page 47)".
LED Display Explanation
OFF* No voltage, group error
Configuration mode DIP (1) position: left
Green Device is ready for operation
Power-up: hardware test
Green flashing Missing startup testing
Short-circuit on the SET/RESET button
Yellow Power-up DIP (1) position: right
Yellow flashing Configuration mode DIP (1) position: right
Green/yellow flashing Configuration changed
(1) DEVICE
Red Device error
OFF* Output inactive
Configuration mode DIP (2) position: left
Green Output active
Power-up: hardware test
Green flashing Feedback circuit error
Short-circuit on the SET/RESET button
Yellow Power-up DIP (2) position: right
Yellow flashing Configuration mode DIP (2) position: right
START button pressed too long
(2) OUT
Green/yellow flashing Instantaneous outputs inactive, delayed outputs active