公开(公告)号：US20220186733A1

公开(公告)日：2022-06-16

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 ,  H02P7/29 ,  F04D13/06

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.