54 Winder program features Tension speed trimLoad cell feedback is required. The tension control PI modifies the final motor speedreference based on the tension feedback from the load cell. Inertia compensation canbe used to improve the tension control accuracy. The drive is running as speedcontrolled.When running in the Tension speed trim control mode, the tension controller is veryadaptable to a large variety of web material characteristics. The Tension speed trimtension control is suitable especially for stretchy materials demanding smooth controlof the tension.See the below tension speed trim control chain diagram.