Siemens SIRIUS 3RK3 - Page 275

Message Meaning LED response
SF-LED on cen‐
tral unit
Input LEDs on central unit or
expansion module
Safety sensor triggered The safety sensor has been actuated. This
message is automatically reset if the value
"1" is present for all function inputs moni‐
tored (set as part of con󹪝guring).
‑ The IN LEDs of the sensor are
o󹪜.
The IN2-LED is green on input
type NCNO.
Protective door closed The protective door is closed. ‑ The IN LEDs of the sensor are
green.
The IN2-LED is o󹪜 on input
type NCNO.
Lock engaged The lock is engaged. ‑ ‑
Lock released The lock is released ‑ ‑
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 element
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 simultane‐
ously at all available (parameterized)
function inputs (IN1, ...)
• A signal sequence violation is present
• A cross-circuit is present in the case of
cross-circuit monitoring
‑ ‑
Start override active The start override time is running. ‑ ‑
Feedback circuit signal and
switching status do not match
The feedback circuit signal does not match
the interlock status
red The corresponding IN LED of
the input that is connected on
the FEEDBACK_LOCK function
input 󹪞ashes green if in the
logic there is no more than
one negation between the el‐
ement input and the input cell.
Protective door opened when
interlock was active
The protective door opened when inter‐
lock was active.
red The corresponding IN LEDs of
the sensor (protective door
monitoring) are 󹪞ashing
green.
Interlock not possible because
the protective door is open
Interlock not possible because the protec‐
tive door is open.
󹪞ashes red The corresponding IN LEDs of
the sensor (protective door
monitoring) are 󹪞ashing
green.
Diagnostics / service
7.3 Diagnostics with LEDs
SIRIUS 3RK3 Modular Safety System
Equipment Manual, 07/2020, NEB926253002000/RS-AC/006 275