With Off Delay - Siemens Sirius 3RK3 System Manual

Description of the software
6.7 Functions
Parameter name
Parameters t1[s]
See also
Messages for timer functions (Page 268)
6.7.9.5

With OFF 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 OFF delay". The function output Q is
deactivated 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, function output Q is set to "1".
● When there is a negative edge "1 → 0" at input IN, delay time "t1" begins.
● After the delay time, function output Q is deactivated, i.e. set to "0".
● When there is a positive edge "0 → 1" at input IN before the the end of the delay time "t1",
the delay time continues. Function output Q remains active, i.e. set to "1".
Figure 6-16
198
Description/parameter value
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
Timer function "With OFF delay"
chapter.
System Manual, 10/2008, 926 2530-02 DS 02
Modular Safety System 3RK3