公开(公告)号：US11933308B2

公开(公告)日：2024-03-19

申请号：US17550396

申请日：2021-12-14

Applicant: GRUNDFOS HOLDING A/S

Inventor： Martin Byskov Skafsgaard ,  Susanne Hamann Gade ,  Keld Benner Valbjørn ,  Jan Carøe Aarestrup

IPC: F04D15/00 ,  F04D13/06 ,  H02P7/29

CPC classification number: F04D15/0066 ,  F04D13/06 ,  H02P7/29 ,  H02P2207/05

Abstract: A pump assembly with a pump unit comprising an impeller for pumping fluid, an electric motor for driving the impeller, a control module for controlling the speed of the electric motor in a control mode, and an interface for receiving a pulse width modulated (PWM) control signal with a duty cycle indicative of the speed of the electric motor. The control module is configured to interpret the PWM control signal at start-up of the electric motor per default in a configuration mode as a configuration bit sequence based on the duty cycle of the PWM control signal during a pre-determined configuration window.