Patent ID: 11933308
Assignee: GRUNDFOS HOLDING A/S
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  G  H | IPC F  H

Claim 16:
17. A pump assembly comprising:
a pump unit comprising an impeller configured to pump fluid;
an electric motor for driving the impeller;
a control module configured to control a speed of the electric motor in a control mode, the control module comprising a configuration mode; and
an interface configured to receive a pulse width modulated (PWM) control signal with a duty cycle indicative of the speed of the electric motor, wherein the control module is configured to interpret the PWM control signal at start-up of the electric motor in the configuration mode as a configuration bit sequence based on the duty cycle of the PWM control signal during a pre-determined configuration window, wherein the configuration mode is a default mode for interpreting the PWM control signal, wherein the control module is configured to extend a length of the configuration window at least until the control module has received a full and valid configuration bit sequence under a condition that a valid synchronization sequence was detected in the interpreted configuration bit sequence.