Interference operation of analog input from inverter

Hi to all

Today i implement an application using a presure sensor (trancducer) 4-20ma When the pressure is below a value it starts off with a digital output an inverter sinamics v20 7,5kwatt and works on a water pump. When the pressure exceeds a set value which is controlled by the pressure sensor the inverter stops until the pressure drops again and the process repeated

My application started well the problem is that when inverter gets started the proportional entry price is affcted and the programm is not working properly it cuts and cuts the inverter when the inverter diesnt work the proporion is stable. I have used to connect the sensor to the analog card am2 wire with shield and the shield in the ground in the cabinet. Can i do something else to reduse the noise?

Maybe there is no noise but pressure peaks. In hydraulic applications with pressure sensors i use an analog differential trigger with e.g. delta=-10 for hysteresis and an additional on-delay to avoid action by pressure peaks. See attachment for example and adjust the values as needed.

Regard, Scorp