Grundfos Holding A/s

Grundfos A/s

Martin Byskov Skafsgaard

Jan Carøe Aarestrup

Bent Døssing

Keld Benner Valbjørn

Susanne Hamann Gade

Niels Jorgen Strom

Troels Sorensen

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.

Pump assembly and method for controlling an electric motor for driving an impeller of a pump unit of a pump assembly

A method controls a circulation pump () in an installation with at least two circulation circuits (), with which the circulation pump () is integrated by way of a switch-over valve () into the one or the other circulation circuit (or) depending on the switched position. The pump () is activated differently depending on the switched position of the switch-over valve (). The switch-over procedure is detected by way of determining the pressure course and/or the flow rate course in the pump () or an electrical variable which is dependent thereon, of the motor driving the pump, and the pump () is operated in another manner accordingly.

Method for controlling a circulation pump in an installation comprising at least two circulation circuits

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Bjerringbro, Denmark

Martin Byskov Skafsgaard