Thanks ivo.maenen.
Maybe some sort of debounce logic would help.If I understand your problem correctly. See curlyandshemp's post at link below.
https://www.google.com/url?sa=t&rct...6oQeNBybaWNEPrNXw&sig2=vA0PUkWhTqtQSZssgA-R1g
i think, i should use selector switch with 3 state to disconnect main contactor in transition from auto to manual. i used 2 state.