Help understanding the default ATK program

[etpelle]

With the following code that the wizard created i understand lines 1,2,3,4 and 5 says if its on for more than 5 minutes turn it off. I am not sure I understand why I need lines 6,7 and 8. I assume line 8 is so that it doesn't turn on and off constantly from water movement. So really I am not sure I understand line 6 and 7.

1. Fallback OFF
2. Set OFF
3. If FMM_LO OPEN Then ON
4. If FMM_HI CLOSED Then OFF
5. When On > 005:00 Then OFF
6. Defer 000:10 Then ON
7. Defer 000:04 Then OFF
8. Min Time 060:00 Then OFF

[zombie]

6 and 7 are there to filter out noise spikes or waves. The last line does indirectly, so they aren't 100% necessary, but help some nonetheless.

You might be an engineer if...You have no life and can prove it mathematically.

[eschulist]

The first defer is your delay to start the Auto Top Off. The sensor must be exposed to air for 10 seconds before it kicks on. Then once its covered it waits 4 seconds before it turns off. This prevents very short on and offs if the water is exactly at the middle of the bottom sensor. The last line also prevents short cycles by telling the ATK to only top off once per hour.

You can tweak these numbers if you see fit. I for example increased my Defer On time so that if Im fiddling with valves or my equipment is restarting after feed modes or power failure the Auto Top Off doesn't start prematurely.