Siemens SIRIUS 3RK3 - Safety Shutdown Mat with NC Principle

7.3.3.6 Safety shutdown mat with NC principle
The table below lists all the messages and corresponding LED responses to the "Safety shutdown
mat with NC 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 sensor are
󹪞ashing green.
Discrepancy condition violated is set if:
• The signal states of the inputs
monitored had not all previously
been reset simultaneously to the
value "0" when they are set to "1"
󹪞ashes red The IN LEDs of the sensor 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‐
󹪝guring).
‑ The IN LEDs of the sensor are
o󹪜.
Cross-circuit at input x A cross-circuit was detected at input x. red The IN LEDs of the sensor 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
• A discrepancy condition violation
is present
• The value "1" is not present simul‐
taneously at all available (parame‐
terized) function inputs (IN1, ...)
• A cross-circuit is present in the
case of cross-circuit monitoring
‑ ‑
Diagnostics / service
7.3 Diagnostics with LEDs
SIRIUS 3RK3 Modular Safety System
276 Equipment Manual, 07/2020, NEB926253002000/RS-AC/006