How to stop a sprinkler after a period of time

[nrmanzo]

Is it possible to stop a sprinkler after a defined period of time that it was activated? I've tried some things with CTRL, but I wasn't successfull.

Thanks in advance!

[mcgratta]

Use a FLOW_RAMP as in the example case Sprinkers_and_Sprays/cascade.fds

[drjfloyd]

FLOW_RAMP is an easy method but it can also be done with CTRL. You have the sprinkler use an ALL CTRL that is initially F whose inputs are the method of operating the sprinkler and a TIME DELAY CTRL. The operation input is initially F and the TIME DELAY is initially T. When the operation hits its criteria the F become T and with the TIME DELAY T the ALL is T and the sprinkler turns on. After the TIME DELAY, the TIME DELAY T becomes F which means the ALL become F and the sprinkler will turn off.