mcflynn1977
Member
I have recently been given the problem of writing a programme for a PLC with 3 contactors KM1-star KM2-main KM3-delta with 2 push buttons PB1 stop PB2 start ,after pushing PB2 KM2 is energised and stays energised until PB1 is pressed the motor initially starts in star.
The programme must be dseigned in such a way that if KM1 is energised Km3 must be disabled and vice versa.
any suggestions greatly appreciated.
The programme must be dseigned in such a way that if KM1 is energised Km3 must be disabled and vice versa.
any suggestions greatly appreciated.