Siemens SIRIUS 3RK3 Equipment Manual page 250

Diagnostics / service
7.2 Diagnostics concept
Logic or wiring error
A logic or wiring error does not cause the mode to change; the 3RK3 central unit remains in
safety/test mode. This error category can have the following causes:
• Wiring error
(e.g., feedback circuit switching time violation, cross-circuit between cables):
• Logic error
(e.g., discrepancy time violation, violation of a signal sequence):
250
Display on the central unit
LED Display
DEVICE Depending on the operat‐
ing state
SF red
The warning is signaled when the LEDs
of the corresponding inputs start flash‐
ing.
Display on the central unit
LED Display
DEVICE Depending on the operat‐
ing state
SF flashing red
The warning is signaled when the LEDs
of the corresponding inputs start flash‐
ing.
Remedy
Resolve the cause and then acknowledge the error with
reset.
Remedy
Acknowledgment is not necessary. When the logic is cor‐
rect, the error is automatically canceled.
Equipment Manual, 07/2020, NEB926253002000/RS-AC/006
SIRIUS 3RK3 Modular Safety System