justin terry
Member
I am using the zen plc to monitor the flow of a pump. What I have written so far works. If I use a ball valve to throttle flow an emergency stop alarm is generated. My problem is that the alarm is generated when the pump is switched off the alarm is generated also. I have rung that prevents the alarm when pump contactor is off. I believe that I need an off delay timer in the flow switch rung. Not sure how I can show what I have now