Description of the software
6.7 Functions
Modular Safety System 3RK3
System Manual, 10/2008, 926 2530-02 DS 02
171
Parameter name Description/parameter value
Function output substitute
value
"0" or "1" can be assigned to the substitute value when the
element is deactivated.
Substitute value "0" means output Q = 0
substitute value "1" means output Q = 1
Type Input type of the function is defined:
Two-channel (NCNC):
IN1 and IN2 are monitored for "1", i.e. deactivate when there is at
least one "0" signal.
IN1 Select the input to be processed by the function.
IN2 Only available with the parameter - Input > Two-channel type
(NCNC):
IN2 is automatically assigned depending on the selected input IN1.
Parameter - Input
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.
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 (cross-circuit principle) (Page 264)
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