Siemens SIRIUS 3RK3 - Safety Shutdown Mat (Cross-Circuit Principle)

Description of the software
6.7 Functions
Modular Safety System 3RK3
170 System Manual, 10/2008, 926 2530-02 DS 02
Parameter name Description/parameter value
Cross-circuit detection When this parameter is activated, cross-circuits are detected with
the aid of test outputs at the inputs.
Startup test
• Activated:
After powering up the MSS or changing to safety mode, a
startup test must be executed. For this purpose, the sensor to
be monitored must be actuated once. Only then can the
function output Q be activated depending on the type of start.
• Deactivated:
A startup test is not required after connecting the power supply.
Parameter - Start
Type of start
• Automatic:
The function output is set as soon as all start conditions are
fulfilled.
• Monitored:
The function output is set as soon as all start conditions are
fulfilled and the start signal is changed from "0 → 1 → 0".
• Manual:
The function output Q is set as soon as all start conditions are
fulfilled and the start signal is changed from "0 → 1".
See also
Messages for safety shutdown mat (NC principle) (Page 264)
6.7.3.4 Safety shutdown mat (cross-circuit principle)
Description
With the function "Safety shutdown mat (cross-circuit principle)", the signals from the safety
shutdown mats with cross-circuit detection are evaluated.
When the safety shutdown mat is actuated, the function output Q is deactivated, i.e. set to
"0".
Parameters
Parameter name Description/parameter value
Name You can enter a name for the element here.
Element number Consecutive number which is automatically assigned. You can
change the number.
General
Element activated When this parameter is active, the function is processed in the
safety logic.
When this parameter is deactivated, the set substitute value is
made available at the output Q.