Flow control during feed pause

[Ken250]

I have 3 Tunze 6055's in my system and I would like one of them to operate at the minimum flow (30%) during the feed pause.

Under pump control, I have set the tunze pump to min 30%, max 100%, and "at minimum" during the feed pause. The problem is that during the feed pause, the pump stops. The controller is indicating that it is operating at 30%, but the propeller is motionless.

Anyone else experience this? Any thoughts?

Ken

 

[Matthias Gross]

maybe 30% is too less for the pump to move
->increase this value

 

[Harry_Fish]

The 1-10 v interface on your pump channels
should be set to 3v min and 8 volt max

I have 2 6055's and they work corectly with the above setting

 

[Ken250]

I have the 1-10v interface set to 3v min and 8v max.

I have tested the feed pause with the 3rd Tunze 6055 at minimum (30%, 50% and 80%) as well as on "uninvolved" and with all of these settings, it simply stops turning.

I tested the feed pause with the 1st Tunze 6055 and it worked as intended (it works nicely with a 10% minimum during the feed pause, it's just in the wrong place). I'll try swapping the 6055's between pump control 1,2 and 3 to see if it is the pumps themselves or the controller...

 

[Matthias Gross]

has the pump permanent power (wall outlet) or it is supplied by the powerbar?

 

[Ken250]

All 3 of the 6055's are supplied by the digital power bars.

 

[Matthias Gross]

-> this is the problem

they are switched off during feeding pause if the function is set to "pump x"

solution:
1.) use wall outlet or 2.) set function of powerbar socket to "always on"