|
I think I heard Tesseract say that you need a diode across even the ev200 with the economizer. I'm not sure, as I've never used an oscilloscope on it after turnoff, but it might not be a bad idea.
Pin 4 of U9 should go to zero volts (close anyway) to turn on Q1. Pin 3 should be stuck at 0 volts all the time. Pin one should be 5v all the time. When the contactor is OFF, Pin 2 should be 5v. When the contactor is ON, pin 2 should be 0 volts.
|