Resurrecting another thread to ask a question on 3 position selector switches.
When a NO contactor is placed under the left side position, that contactor makes a complete circuit when the switch is in the left side position? The NO contactor is opened at all other times (center position and right position)?
When a NC contactor is placed under the left side position, that contactor is not a complete circuit when the switch is in the left side position? The NC contactor is closed at all other times (center position and right position)?
So in theory, if I want to make the center "Off" position, be an "On" position, I would wirte a NC contactor in series from left position to right position? That way, when the switch is on the left or right side, one of the contactors is opened and the circuit is incomplete. When the switch is in the center position they are both closed and the circuit is complete?
Is my theory here correct? Basically, my goal is to use this switch to control "Valve1", "Auto" and "Valve2", where "Auto" is my center position and a Microcontroller will determine which of Valve1 or Valve2 will be opened. So I will use 4 NC contactors, and put my lines from Microcontroller to each valve through 2 of those NC contactors, one on each side.
Thanks! Sorry for the long winded post. I want to make sure to get this right before placing my order for contactors.
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