darrell
Guest
D
Iam an electrician, where i work we have an abb ac drive that controls 3 300hp motors for exhaust fans. on 1 of thosr fan drives we have a plc that sends info to a touch screen which shows all 3 fans , if running or not and also, we can change the direction for which we need them to run, as wellas start them and change the speed of them. i have no schematic as the engineering co. that designed this system no longer here. can u guys give me an idea or maybe seen this before? as to how u think this system is set up?