Siemens SIRIUS 3SK1 Equipment Manual page 186

Display and diagnostics
11.1 LED display
LED Display
(3) IN OFF*
Green
Green flashing
Yellow
Yellow flashing
Flickering yellow
Flickering red
(4) SF OFF*
Green
Green flashing
Yellow
Yellow flashing
Red
Red flashing
* LED flashes briefly in configuration mode due to lamp test
186
Explanation
Start conditions not fulfilled
Configuration mode DIP (3) position: left
Start conditions fulfilled
Power-up: hardware test
• If 1 x two-channel: Simultaneity of sensors not fulfilled
• Two-hand operation: time monitoring violated
• If monitored start: START button not yet pressed
Short-circuit on the SET/RESET button
Power-up DIP (3) position: right
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
Configuration mode DIP (3) position: right
Configuration mode: Special two-hand operation configuration
Configuration mode: impermissible configuration
No group error,
Configuration mode DIP (4) position: left
Power-up: hardware test
Short-circuit on the SET/RESET button
Power-up DIP (4) position: right
Configuration mode DIP (4) position: right
Group error, e.g. cross-circuit at input, short-circuit to P, device configura‐
tion changed.
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)
SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays
Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005