OMRON Wine Surge Tank Ladder

[kisutch 0]

I have an Omron 10 C1-DR-V1, which I am hoping will allow me to manage pump "on" time. The wine surge tank is supplied by a pump. The surge tank has a FloLine level switch that can be set to either N/C or N/O. I have set this to N/C so that when the tank is empty, the pump is energized. I don't want to have the pump jitter on and off as it fills and the level then drops. Instead, the level switch closes when full, shutting off the pump and then does not start again for 15 seconds - if the level is low. So- the empty surge tank, after 15 seconds receives pumped wine. As the level switch is satisfied, it opens, since the surge tank is full. As wine leaves the surge tank, the level switch closes and 15 seconds later the pump energizes, to filll the surge tank again. Does it look like: ---(\)---------(to\)------(\)--- I'd appreciate some help as this is beyond my training as a moderatly geeky Biologist. I think I could have done this with an On Delay relay and a motor contactor - but I thought the OMRON was a more flexible system and I might learn something. If this request is declase' or inappropriate, I am a new member and beg your tolerance. Edited 23 Mar 2011 by kisutch

[Joe E. 259]

I'm not familiar with Omron stuff, but in general you would put 2 timers on the float switch input in the code. One starts timing when the flow switch closes, the other when it opens. You can use either NC or NO contacts on the switch. I have attached a jpg showing what the code may look like. The timer presets would have to be set appropriately. If the switch flickers, nothing happens, because T4:0 has to finish timing out before starting the pump while T4:1 has to time out to stop the pump. This is a basic switch debounce routine.