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Skimmer Control (12 hrs pause) by Programmable Logic
Hello,
Could anyone please help me to set up a programmable logic function for my skimmer?
What I’m intending is as follows.
When I feed coral food and hit feed pause 1 (FP1) at around 23:00, the skimmer stops until I hit feed pause 2 (FP2) next morning,
or a timer gives a reset signal around 11:00. (for about 10~12hours).
This is for preventing the skimmer from overflow or the coral food is stripped by the skimmer too early.
I tried to write a programmable logic as follows.
G1 : Or (PL1)
Input 1 : FP2
Input 2 : Timer 1
G2 : SR-flipflop (PL2)
Input 1 (set) : FP1
Input 2 (reset) PL1
Timer 1 (Process)
Event start at 11:00
Power Outlet 5
PL2
Invert
This programmable logic does not work, so I tried to add a pulse (1s) after FP1 and FP2 before the input of their next gate, but nothing changed.
I tried with Maintenance Mode, but the duration is too short, 5 hours?
I fully understand the functions of those logic gates by my background, but I’m a very beginner for the PL of P4.
What did I do wrong?
Could you please give me a tip to achieve the function?
Thanks in advance.
Son
Last edited by otimer; 05.08.2019 at 07:23.
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Hello,
Due to no answer so far, I have achieved the function by myself thru testing the function (settings options and status of output) of each event and gate.
The following is the actual programmable logic that I made.
1. Extra > Feed Pause > check filter off 1 & 2 and set 1 min. both
2. Programmable Logic
Gate G1 : NOT PL1
Input 1 : Filter 1
Gate G2 : NOT PL2
Input 1 : Filter 2
Gate G3 OR PL3
Input 1 : PL2
Input 2 : Timer 1
Gate G4 SRflipFlop PL4 <--- added
Input 1 : PL1
Input 2 : PL3
Timer (Process)
Timer 1 : Event start at 11:00
Switch Channel 5
Function : PL4
Invert
This programmable logic works as follows.
Whenever I feed coral food (in my case, Prodibio Reef Booster) at around 23:00~24:00,
I hit also Feed Pause 1 to pause my skimmer for about 12 hours. Next morning, I hit Feed Pause 2 to restart the skimmer.
Even if I forget to hit Feed Pause 2, the timer gives restart signal at set time (ex 11:00).
I hope this helps reefers need a similar function.
Son
Last edited by otimer; 08.08.2019 at 06:58.
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Good job, thanks for posting the follow up. This could be useful for me in the future.
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