Passing Make Contact (Trigger) - Siemens Sirius 3RK3 System Manual

6.7.9.4

Passing make contact (trigger)

Description
Note
The time value is not stored. At the start of safety mode, all time values begin with their initial
values.
The safety relay supports the timer function "Passing make contact (trigger)". An input signal
generates a signal with parameterizable delay time at function output Q.
The timer function has one input IN and one function output Q.
Functional principle
● When there is a positive edge "0 → 1" at the input IN, time "t1" begins and function output
Q is set to "1".
● When there is a negative edge "1 → 0" at input IN before the the end of the time "t1", the
time continues to elapse. Function output Q remains active, i.e. set to "1", during the time
period "t1". When there is another positive edge "0 → 1" at input IN, time "t1" begins
again.
● After the time period, function output Q is deactivated, i.e. set to "0".
Figure 6-15
Parameters
Parameter name
General Name
Element number
Element activated
Substitute value
Modular Safety System 3RK3
System Manual, 10/2008, 926 2530-02 DS 02
Timer function "Passing make contact (trigger)"
Description/parameter value
You can enter a name for the element here.
Consecutive number which is automatically assigned. You can change
the number.
When this parameter is active, the function is processed in the safety
logic.
When the parameter is deactivated, the set substitute value is made
available at the output Q.
"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
Description of the software
6.7 Functions
197