Siemens SIRIUS 3RK3 - With on Delay (Trigger)

Description of the software
6.7 Functions
Modular Safety System 3RK3
194 System Manual, 10/2008, 926 2530-02 DS 02
Parameter name Description/parameter value
Parameters t1[s]
• You enter the delay time here.
• The maximum value is 655 s, increment: 5 ms
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.
See also
Messages for timer functions (Page 268)
6.7.9.2 With ON delay (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 "With ON delay (trigger)". 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 begins again. 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 6-13 Timer function "With ON delay (trigger)"