Siemens SIRIUS 3RK3 - Behavior on Failure of AS-I Components; Acknowledgement Behavior

$6,B,1
$6,B,1
,1
,1
6ORWB)4
$6,B4
6ORWB)4
4 4b
5 3b
3a
4
4 4a
4

5

Figure 6-37 Evaluation of the safety-related AS‑i input slaves and of the standard outputs in the logic
diagram
6.5.8 Behavior on failure of AS-i components
6.5.8.1 Acknowledgement behavior
Responses in the event of an error
On failure of a component on the AS-i bus, calculation in the logical processing is always
performed with the substitute value "0."
WARNING
Automatic system startup
Can Cause Death, Serious Injury, or Property Damage
As soon as the failed AS-i slave returns to the AS-i bus, its real value is immediately processed
in the logic and the corresponding partial path of the logic is active again. To prevent this, you
must activate the "Startup test" parameter for the relevant function elements in Safety ES, or
secure the system by other suitable means.
For the monitoring functions (e.g. EMERGENCY STOP), a startup test is required on recovery of
the safety-related slaves if any have been parameterized in the function element.
On failure of an AS-i component, the AS‑i-LED 󹪞ashes red and a warning is generated.
If errors are pending on the AS-i bus (e.g. code sequence errors), the AS-i-LED lights up red. The
error must be acknowledged once it has been recti󹪝ed.
Operation
6.5 Connecting to the AS-i master via AS-Interface
SIRIUS 3RK3 Modular Safety System
232 Equipment Manual, 07/2020, NEB926253002000/RS-AC/006