It would be great if the Apex had the granularity to control the wavebox directly, but it seems impossible to fine tune the wavebox using only the apex. The benifit is really to link the wavebox with the programmed feed cycles and night mode.
There's a trick to make this work.
I used the wavebox controller (6091) to set the wave and used the Apex controller to enable/disable the 6091 wave function.
The wiring diagram looks like this:
The Y adapter isn't strictly necessary but it makes things much easier because it serves as a gender changer for the cables. Both the wavebox controller (6091) and Apex have male ends whereas the Y adapter is female.
The second wavebox isn't necessary either. However, if two waveboxes are deployed in this configuration, they have to be on the same end of the tank running in synchronous mode.
The jumper in the 6091 controller needs to be set to slave mode to enable control from the Apex.
I haven't spent a lot of time experimenting with diffent voltages, but in the simpliest of terms:
10V from Apex = 6091 stops creating a wave. The pump shuts off.
0V from Apex = 6091 opperates in wave mode.
This seems counter intuitive, but it does make sense on one front. If the 6091 controller is disconnected from the Apex it opperates independantly and generates a wave. Therefore, it is not dependant on the Apex for opperation, rather it is dependant on the Apex to know when to shut off.
I plan on doing some more experimentation with this configuration, but for now I can confirm that it works.
This configuration is documented here:
• Tunze Wavebox (6215) and Powerheads.........
Post 28