Siemens SIRIUS 3SK1

LED Display Explanation
(3) IN OFF* Start conditions not ful󹪝lled
Con󹪝guration mode DIP (3) position: left
Green Start conditions ful󹪝lled
Power-up: hardware test
Green 󹪞ashing
• If 1 x two-channel: Simultaneity of sensors not ful󹪝lled
• Two-hand operation: time monitoring violated
• If monitored start: START button not yet pressed
Short-circuit on the SET/RESET button
Yellow Power-up DIP (3) position: right
Yellow 󹪞ashing Short-circuit of T1/T2 to ground or 24 V
With input expansion: missing enabling signal of input expansion
Group error: Cross-circuit at input
Con󹪝guration mode DIP (3) position: right
Flickering yellow Con󹪝guration mode: Special two-hand operation con󹪝guration
Flickering red Con󹪝guration mode: impermissible con󹪝guration
(4) SF OFF* No group error,
Con󹪝guration mode DIP (4) position: left
Green Power-up: hardware test
Green 󹪞ashing Short-circuit on the SET/RESET button
Yellow Power-up DIP (4) position: right
Yellow 󹪞ashing Con󹪝guration mode DIP (4) position: right
Red Group error, e.g. cross-circuit at input, short-circuit to P, device con󹪝gura‐
tion changed.
Red 󹪞ashing Error message (e.g. short-circuit T1/T2, violation of simultaneity, violation of
two-hand operation timeout, feedback circuit error, START-button pressed
too long, connection of control supply voltage (A1/A2) to an expansion unit
that is connected via a device connector)
* LED 󹪞ashes brie󹪞y in con󹪝guration mode due to lamp test
Display and diagnostics
11.1 LED display
SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays
186 Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005