User’s Manual xLogic SuperRelay
53
You can change the prewarning time base and the period.
Description of the function
Output Q is set to 1 with a 0 to 1 signal transition at input Trg. The 1 to 0 transition at
input Trg triggers the current time and output Q remains set.
Output Q is reset to 0 when Ta reaches the time T. Before the off delay time (T - T
!
) has
expired, you can output a prewarning that resets Q for the duration of the off prewarning
time T
!L
.
Ta is retriggered (optional) at the next high/low transition at input Trg and if Ta is
expiring.
3.4.10 Multiple function switch
Short description
Switch with two different functions:
Pulse switch with off delay
Switch (continuous light)
Time base
T
Prewarning time Prewarning
period
Seconds
750 ms 50 ms
Minutes 15 s
1 s
Hours
15 min 1 min
* makes sense only for programs with a cycle time of < 25 ms
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