Threshold Trigger - Rievtech xLogic ELC Series User Manual

You reset output Q and the time-to-go counter to the specified value MI with a signal at input Ral. The
operation hour counter OT is reset to 0.
Depending on your configuration of the Q parameter, the output is either reset with a reset signal at input
R or Ral, or when the reset signal is 1 or the En signal is 0.
Limit value of OT
The values of the operating hours in OT are retained when you reset the hours counter with a signal at
input R. The hours counter OT continues the count as long as En = 1, irrespective of the status at the
reset input R. The counter limit of OT is 99999 h. The hours counter stops when it reaches this value.
Parameter preset
In xLogicsoft, you can define MI and an OT start value.
You determine that Q does not depend on En by selecting the corresponding check box.
Retentivity with the hours counter
The hours counter in the xLogic is generally retentive.
However, if the values of the hours counter are lost after a power failure, then select the respective block
in your circuit program. Right mouse click on the hours counter and select Block Properties > Parameters.
The option Retentivity must be activated and not changeable (grayed out).
If the Retentivity option is not available, then delete the block and insert a new special function hours
counter at the same position.

5.5.15 Threshold trigger

Fashion: Classic:
Short description
The output is switched on and off, depending on two configurable frequencies.
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