Avast Kalk stirrer won't oscillate?

Tcook · Dec 22, 2020

Can someone check my code? It is running 24/7. The outlet is set to "Auto" in Fusion. When I turn it off the stirrer stops. Is it the pH "ON" statement last in the list that is keeping it on?

Fallback OFF
Set OFF
OSC 000:00/015:00/045:00 Then ON
If pH > 8.30 Then OFF
If pH < 8.30 Then ON
If FeedA 000 Then OFF

Silent · Dec 22, 2020

Does it oscillate it plugged into a regular outlet?
Just checking to see if motor is bad first.

SuncrestReef · Dec 22, 2020

What is you pH probe reading? If it’s below 8.30, then the programming sets the output to ON which overrides the OSC. The way your program is written it will only ever oscillate if pH is exactly 8.30. Not higher, not lower.

By the way, you can delete the Set OFF command because it’s not needed when using OSC.

garbled · Dec 22, 2020

You don't need the ph < 8.3 line. Your test for ph > 8.3 covers that. If you delete that line, then it will turn on when the OSC is in the right timerange, as long as the ph is less than 8.3.

Brett S · Dec 22, 2020

Tcook said:
Can someone check my code? It is running 24/7. The outlet is set to "Auto" in Fusion. When I turn it off the stirrer stops. Is it the pH "ON" statement last in the list that is keeping it on?

Fallback OFF
Set OFF
OSC 000:00/015:00/045:00 Then ON
If pH > 8.30 Then OFF
If pH < 8.30 Then ON
If FeedA 000 Then OFF

The lower lines take priority, so the If pH < 8.30 Then ON will override the OSC line above it and cause the outlet to always be on when the pH is less than 8.3.

As @garbled said, just take that line out and it will do what you want. The OSC will start working, but it will be overridden and turned off if the pH is above 8.3 or if FeedA is active.

Even without that line it will only oscillate when the pH is at or below 8.3, because the If pH > 8.30 Then OFF line will turn it off if the pH is too high.

On a side note, it would have worked perfectly whenever your pH was exactly 8.30, because you had a line that forced it off when the pH was greater than 8.30 and a line that forced it on when it was less than 8.30, but nothing to override the OSC line when the pH was exactly 8.30.