Switch-On/Off Delay (BD14)
The delay block transforms the input signal IN so that each rising edge is delayed by TON and each falling edge is delayed by TOFF. The TRES parameter gives time remaining to the end of delay. The TRES value can be reset by a rising edge on the RESET input.
||Resets the TRES.
||If TRUE the block is not initialised after start.
||Falling edge delay (30 s by default).
||Rising edge delay (30 s by default).
||Time remaining to the end of delay
The block is used to smoothe the binary signal, it is actually a digital filter. The most frequent usage is in cascade controllers to delay the activation of a next cascade stage together with delayed switch-off to make the system more stable.
Version V1.0 is flagged as BROKEN. It contained an error of IGNORESTARTEDGE input. Valu on this input during firt cycle of program was not reflecter even if the function block was set correctly.