Re: A54 fridge circulation pump
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Oliver states: "This adapter is hooked up directly to the E51385 Box"
Again, you found the exact question to ask. What is the "adapter?"
My guess also is that the "adapter" is a relay, taking 12 volts from the Danfoss "fan" output on one side of the relay, and closing 24 volts on the other side of the relay, thus energizing a 24-volt circuit to the VESC which utilizes programmable logic and different sensors to energize a 24-volt pump motor. I believe that this "relay" would need to be installed for each of the refrigeration units. If that is true, and the primary goal is to get longer life from the motor, then why not simply use all of the existing Amel installed components, including the E51385 pump controller, except substitute a 12-volt brushless motor for the Flowjet motor? I believe that Oliver has designed and installed something that works well for him, but we are 68 messages in this thread and the system Oliver designed still eludes enough description for even an electrical engineer to duplicate.
I really think that I should shut this thread down because it is very misleading to all of the non-engineers, who happen to be a very large majority of our members. In fact, we are still guessing about this system. I saw where one member has already ordered some components.
But, I am very interested in the specifics of Oliver's solution. If we cannot get to a specific duplicatable plan, I will shut this thread down and those interested will need to contact Oliver directly and off-group.
On Thu, Feb 6, 2020 at 7:44 AM Scott SV Tengah <Scott.nguyen@...> wrote: