Siemens SIRIUS 3RK3 - Startup; Self-Test of the MSS 3 RK3 Advanced

5.1.4.1 Startup / self-test of the MSS 3RK3 Advanced
Initially, startup is performed very much like startup of the MSS 3RK3 Basic, as described in
Chapter "Startup / self-test of the MSS 3RK3 Basic (Page 80)." The AS-i function is activated during
startup, depending on the con󹪝guration.
If no AS‑i bus is detected within 30 s during startup, the MSS 3RK3 Advanced switches to safety
mode. The missing AS-i slaves are then processed with substitute value "0" in the logic. (AS‑i-BF-
LED 󹪞ashes red)
If safety-related AS‑i slaves have been detected on the AS-i bus whose code sequence has not
been acquired by teaching or whose code sequence does not match the existing code sequence,
these are processed with the substitute value "0" in the interconnection logic. (AS‑i-BF-LED
󹪞ashes red)
If no AS‑i is con󹪝gured, the AS‑i functionality and the AS-i-BF LED are not processed.
Con󹪝guring mode
The 3RK3 Advanced central unit enters con󹪝guring mode (the DEVICE LED lights up yellow)
when:
• No con󹪝guration exists,
• The TARGET con󹪝guration di󹪜ers from the ACTUAL con󹪝guration (the SF LED lights up red)
Note
Actual AS‑i structure ≠ target AS‑i structure
If the actual AS‑i structure deviates from the target structure, substitute values will be used
for the AS‑i slaves a󹪜ected and the MSS 3RK3 Advanced will change to safety mode after
startup.
• The modules could not be parameterized (the SF LED lights up red)
• The existing con󹪝guration has not been released.
• The memory module is missing or defective. In this case, only diagnostics of the MSS 3RK3
is possible (DEVICE LED 󹪞ashes red, SF LED lights up red).
Simulated slaves in con󹪝guration mode
If simulated AS‑i slaves are contained in the con󹪝guration, they will already be simulated on the
AS‑i bus in con󹪝guration mode. The process data of the simulated slaves in con󹪝guration mode
are always zero.
If the AS‑i bus does not exist or if no data tra󹪟c is detected on the AS‑i bus by the master,
simulation of these AS‑i slaves is not possible. (AS‑i LED 󹪞ashes red)
If con󹪝guration mode is entered by ending safety mode or test mode, the AS‑i functionality
remains, that is, the simulated slaves remain active on the AS‑i bus. Teaching of safety-related
AS‑i slaves also remains active. Only when a new con󹪝guration is loaded onto the device will the
period for transmission stop the simulation of AS‑i slaves and it will not be started again until the
new con󹪝guration has been evaluated and accepted.
Description of the hardware
5.1 Description of the individual modules
SIRIUS 3RK3 Modular Safety System
Equipment Manual, 07/2020, NEB926253002000/RS-AC/006 85