int relaymain  = 2 ; // CONTACTOR
int relaystar  = 3 ;
int relaydelta = 4 ;

int h1         = 5 ; // INDICATOR LAMP BISA DIGANTI RELAY UNTUK LAMPU AC
int h2         = 6 ;

int pbstop     = 7 ; //PUSH BUTTON
int pbstar     = 8 ;
int pbdelta    = 9 ;

int a          = 0 ;

void setup() {
  // put your setup code here, to run once:
pinMode(pbstop, INPUT)       ;
pinMode(pbstar, INPUT)       ;
pinMode(pbdelta, INPUT)      ;

pinMode(h1, OUTPUT)          ;
pinMode(h2, OUTPUT)          ;

pinMode(relaymain, OUTPUT)   ;
pinMode(relaystar, OUTPUT)   ;
pinMode(relaydelta, OUTPUT)  ;

digitalWrite(relaymain, LOW) ;
digitalWrite(relaystar, LOW) ;
digitalWrite(relaydelta, LOW);

digitalWrite(h1, LOW)        ;
digitalWrite(h2, LOW)        ;
}

void loop() {
  // put your main code here, to run repeatedly:
if(digitalRead(pbstop)==HIGH){

digitalWrite(relaymain, LOW) ;
digitalWrite(relaystar, LOW) ;
digitalWrite(relaydelta, LOW);

digitalWrite(h1, LOW)        ;
digitalWrite(h2, LOW)        ;

a=0                          ;
}

if(digitalRead(pbstar)==HIGH){

digitalWrite(relaymain, HIGH);
digitalWrite(relaystar, HIGH);

digitalWrite(h1, HIGH)       ;

a=1                          ;
}

if(digitalRead(pbdelta)==HIGH && a==1){

digitalWrite(h1, LOW)         ;
digitalWrite(h2, HIGH)        ;

digitalWrite(relaymain, HIGH) ;
digitalWrite(relaystar, LOW)  ;
delay(1000)                   ;
digitalWrite(relaydelta, HIGH);
}
}