Siemens SIRIUS 3RK3 - Timer Functions; With on Delay

Description of the software
6.7 Functions
Modular Safety System 3RK3
System Manual, 10/2008, 926 2530-02 DS 02
193
6.7.9 Timer functions
6.7.9.1 With ON delay
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 "With ON delay". The function output Q is
activated after the input (with a parameterizable delay time).
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, delay time "t1" begins.
● After the delay time, function output Q is activated, i.e. set to "1", as long as there is a "1"
at input IN.
● When there is an edge change at input IN before the the end of delay time "t1", the delay
time continues. The function output Q remains deactivated, i.e. "0", if there is a "0" at
input IN after the end of the delay time.
Figure 6-12 Timer function "With ON delay"
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.
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.
General
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