Siemens SIRIUS 3RK3 - Enabling Button; Mode Selector Switch

7.3.3.9 Enabling button
The table below lists all the messages and corresponding LED responses to the "enabling button"
function element.
Message Meaning LED response
SF-LED on central unit Input LEDs on central unit
or expansion module
Discrepancy condition
violated
is set if:
• The signal states of the inputs moni‐
tored had not all previously been re‐
set simultaneously to the value "0"
when they are set to "1"
󹪞ashes red The IN LEDs of the sensor
are 󹪞ashing green.
Enabling button OFF The enabling button has the status OFF. ‑ ‑
Enabling button ON The enabling button has the status ON. ‑ ‑
Cross-circuit at input x A cross-circuit was detected at input x. red The IN LEDs of the sensor
are 󹪞ashing green.
Start condition not ful󹪝l‐
led
is set if:
• A discrepancy condition violation is
present
• The value "1" is not present simulta‐
neously at all available (parameter‐
ized) function inputs (IN1, ...)
• A cross-circuit is present
‑ ‑
Pushbutton stuck
(not in the case of 3RK3
Basic)
The pushbutton is stuck. 󹪞ashes red The IN LEDs of the sensor
are 󹪞ashing green.
7.3.3.10 Mode selector switch
The table below lists all the messages and corresponding LED responses to the "Mode Selector
Switch" function element.
Message Meaning LED response
SF-LED on central unit Input LEDs on central
unit or expansion
module
Switchover time exceeded The "1 out of 2...5 selection monitor‐
ing" has detected the value "0" at all
inputs after the contact switchover
time has elapsed.
‑ ‑
Invalid operating mode selection The "1 out of 2...5 selection monitor‐
ing" has detected after the contact
switchover time has elapsed:
The value "1" is present at more than
one input.
red The IN LEDs of the sen‐
sor are 󹪞ashing green.
Diagnostics / service
7.3 Diagnostics with LEDs
SIRIUS 3RK3 Modular Safety System
Equipment Manual, 07/2020, NEB926253002000/RS-AC/006 279