A Forum run by Enthusiasts of MidNite Solar

General Category => System Design and Layout => Topic started by: brent on October 25, 2020, 05:27:56 PM

Title: midnite 150 solar charge controller
Post by: brent on October 25, 2020, 05:27:56 PM
I would like wiring info for midnite 150 controlling a zephyr 48 volt battery vent fan.
Title: Re: midnite 150 solar charge controller
Post by: ClassicCrazy on October 25, 2020, 10:21:05 PM
You would use the AUX contact from the Classic to a relay of some sort - SSR solid state or a mechanical one.  You need to make sure the contacts in the Classic are set properly - there are jumpers inside the Classic and info is in the manual.  You will use the 12v output of the AUX in Classic to run the relay , and the relay contacts will then switch on and off the 48v source voltage to your fan. The Classic has AUX  Ventilation fan settings on the MNGP or the Local Status App and there are other logic ways to control the fan if you want. If you are using a Whizbang you will need to use AUX 1 since AUX 2 is used by the Whizbang.  One final thing is that if your relay doesn't have it built in ,  you will want to consider a flyback snubber ( usually diode) to keep the relay from burning out.

Larry