VLT ® 2900 Series such a way that there is a linear connection between the reference and the flow required. If Linear [0] is selected, the feedback signal and the feedback value will be proportional. If Square root [1] is selected, the frequency converter translates the feedback signal to a squared feedback value. Programming MG.29.A3.02 - VLT ® is a registered Danfoss trademark 53 Description of choice: