Siemens SIRIUS 3RK3 - Page 175

Description of the software
6.7 Functions
Modular Safety System 3RK3
System Manual, 10/2008, 926 2530-02 DS 02
173
Parameter name Description parameter value
Type Use these parameters to determine the input type of the function:
• Single-channel (NC)
IN1 is monitored for "1", i.e. the function output Q is
deactivated when there is a "0" signal.
• Two-channel (NCNC)
IN1 and IN2 are monitored for "1", i.e. the function output Q is
deactivated when there is at least one "0" signal.
• Two-channel (NCNO)
IN1 (NC) is monitored for "1" and IN2 (NO) is monitored for "0"
(antivalent), i.e. the function output Q is deactivated when there
is a signal change at IN1 or IN2.
IN1 Select the input to be processed by the function.
IN2 Only available with the parameter input > Two-channel type
(NCNC) or (NCNO).
IN2 is automatically assigned depending on the selected input IN1.
Input delay [ms] Select here when the functions further process the signals:
• Input delay = "0"
The input signals are further processed by the function without
time delay when there is a signal change.
• Input delay not "0"
This parameter can be used to suppress signal interference.
The signal state that was pending for most of the duration of
the input delay is further processed.
Please note that the delay time specified by you is a multiple of the
program cycle time specified by you in the properties of the central
unit.
For additional information on the program cycle time, refer to the
Response times chapter.
Parameter - Input
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 Q 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".