Siemens SIRIUS 3RK3 - Page 249

This error category can occur in any operating mode.
Display on the central unit Remedy
LED Display
DEVICE Red The 3RK3 central unit can only exit the system stop by means
of a restart initiated by switching the power supply o󹪜 and on.
If the error is still present after the system has restarted, you
must replace the 3RK3 central unit.
Exception:
In the event of overvoltage or undervoltage, the device LED
and SF LED do not light up:
SF red
Note
Diagnostics not possible
In this state, no diagnostics information can be queried.
System error
If a system error occurs, the 3RK3 central unit switches from safety or test mode into a safe state
(con󹪝guring mode) and switches o󹪜 all the outputs. Communication with the expansion
modules continues, however, ensuring that status and diagnostics messages can still read out.
The causes of such errors are device errors on modules connected to the central unit (e.g.,
expansion module defective), con󹪝guration errors, and bus errors. If an expansion module has
caused this error, the SF LED of the a󹪜ected expansion module lights up.
Display on the central unit Remedy
LED Display
DEVICE
• 󹪞ashing red (in safety
mode)
• yellow (in test mode)
• Coming out of safety mode:
Following error correction, perform a reset or a restart to
be able to switch back to safety mode.
• Coming out of test mode:
Following error correction, you can change back to test
mode.
Reset or restart leads to con󹪝guring mode.
SF red
Diagnostics / service
7.2 Diagnostics concept
SIRIUS 3RK3 Modular Safety System
Equipment Manual, 07/2020, NEB926253002000/RS-AC/006 249