First post here. Hope someone will see what I’m missing. Sorry if I do some english mistake, trying to do my best.
I’m playing with Arduino as a hobby since few years. But, as soon i start something using it at my job, Murphy is coming:
I’m struggling with my arduino 2560 who sometimes freeze when it shut down a 400V contactor.
I’ve then tried to put RC filter on the contactor outputs, a 220uF capacity on 24V, and ferrites everywhere. I had some encouraging result: this freezing occurs less often, but it still occurs (Lets say about one freeze for every 50 contactor switches).
I’ve tried as well to build a Faraday cage, using aluminium paper around a paper box, no difference.
I don’t see anything strange using a scope on both 24V and 5V, theses voltages seem’s to remain stable even when commuting.
Below you’ll find a part of the drawing, a picture of the project (became a bit messy with all the troobleshoot i’ve done), and the software I’ve made.
Thanks for reading!
ProgrammeArduino_V0.1.ino (2.36 KB)