Siemens SIRIUS 3RK3 - Safety Shutdown Mat with Cross-Circuit Principle

7.3.3.7 Safety shutdown mat with cross-circuit principle
The table below lists all the messages and corresponding LED responses to the "Safety shutdown
mat with cross-circuit principle" function element.
Message Meaning LED response
SF-LED on central unit Input LEDs on central
unit or expansion
module
Startup test required This message is set in a parameterized
startup test on each restart and each
time the substitute value is changed to a
real value until the connected sensor is
actuated at least once.
‑ The IN LEDs of the sen‐
sor are 󹪞ashing green.
Safety sensor triggered The safety sensor has been actuated.
This message is automatically reset if
the value "1" is present for all function
inputs monitored (set as part of con󹪝g‐
uring).
‑ The IN LEDs of the sen‐
sor are o󹪜.
Wire break at input x A wire break was detected at input x. red The IN LEDs of the sen‐
sor are 󹪞ashing green.
Short circuit to P at input x A short-circuit to P was detected at input
x.
red The IN LEDs of the sen‐
sor are 󹪞ashing green.
Start signal duration invalid Only with start type "Monitored start":
The start signal time monitoring ele‐
ment detected a violation.
‑ ‑
Start condition not ful󹪝lled is set if:
• A sensor test was not executed in
the case of an active startup test
function
• The value "1" is not present simulta‐
neously at all available (parameter‐
ized) function inputs (IN1, ...)
• A cross-circuit is present
‑ ‑
Diagnostics / service
7.3 Diagnostics with LEDs
SIRIUS 3RK3 Modular Safety System
Equipment Manual, 07/2020, NEB926253002000/RS-AC/006 277