hi guys
i need your help again, i have been asked to fit an transducer to control a pump via a plc the pump is already running on a vfd with the speed set from a hmi ,all they want me to come up with is to get the transducer to control the speed via the plc when the pressure adjusts.they would like to set the speed on the hmi until we have got the right running pressure and the press a button to switch over to the transducer to keep the pressure constant? can anyone help.thanks stu
i need your help again, i have been asked to fit an transducer to control a pump via a plc the pump is already running on a vfd with the speed set from a hmi ,all they want me to come up with is to get the transducer to control the speed via the plc when the pressure adjusts.they would like to set the speed on the hmi until we have got the right running pressure and the press a button to switch over to the transducer to keep the pressure constant? can anyone help.thanks stu