Question about dual solar controllers
Hi, I have a pre-existing 30A solar controller with 3 12v panels (2 x 80, 1 x 130) feeding 4 T-125's. I added a new 250w 24v panel hooked up to a separate Solar30 controller. Both controllers wire ...
Forum Discussion
The second controller is sensing the output of the 290W array because of the way it is wired and declining to join in the effort to push any current into the battery would be my guess.
A simple experiment to define the issue would be to either block off the 290W array, disconnect the wiring to same, or turn off that controller. Make sure that the correct sequence is followed when disconnecting/connecting wires to/from controller.
If the solar30 is an MPPT controller and the batteries are somewhat discharged, the current harvested from the 250W module should exceed the older array and controller. You may then see just the opposite effect, the 290W combination puts out little while the new 250W does the heavy lifting.
One thing you could do is to wire the controller output from the 250W controller directly to the battery. That may make it join the party.
A simple experiment to define the issue would be to either block off the 290W array, disconnect the wiring to same, or turn off that controller. Make sure that the correct sequence is followed when disconnecting/connecting wires to/from controller.
If the solar30 is an MPPT controller and the batteries are somewhat discharged, the current harvested from the 250W module should exceed the older array and controller. You may then see just the opposite effect, the 290W combination puts out little while the new 250W does the heavy lifting.
One thing you could do is to wire the controller output from the 250W controller directly to the battery. That may make it join the party.
