Quote Originally Posted by eurikain View Post
Alright, I get it now :) Wiring the buzzer in series drops the voltage in half, therefore both the relay and buzzer get 12V, which obviously isn't enough for the relay. So, I need to wire relay and buzzer in parallel and the SPDT switch allows opening the override line that bypasses all switches PLUS a parallel line where the buzzer is. Back to physics 101... ! :D Is this correct ?
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EDIT:
I still have to make the changes for the contractor and for the VFD stop.
Ok You are getting there BUT if you look at the changeover switch how is the buzzer going to get its ground?
I feel it is better for you to work this out and then you will understand it.
Also if you will allow me to correct the name for the contactor instead of contractor (they are two different things in English.) I also wish I could speak your language as well