Pump controller system and method

摘要

A method and apparatus for a pump control system. One or more embodiments of the invention include a pump controller that can perform a self-calibrating procedure, can provide precise motor speed control, can provide a limp mode before shutting down the motor when system parameters are exceeded and/or fault conditions occur, can detect fault conditions, and can store fault conditions for later retrieval.

主权项

1. A method of calibrating a pump having a motor, the pump connected to a water distribution system, the method comprising;
a) providing a constant pressure setpoint; b) operating the motor in a forward direction; c) sensing a pressure in the water distribution system; d) determining whether the sensed pressure has increased by a first pressure increment; e) increasing an operating frequency of the motor by a first frequency increment if the sensed pressure has not increased by the first pressure increment; f) storing a speed of the motor as a minimum calibrated speed value when the sensed pressure has increased by the first pressure increment; and g) setting the minimum calibrated speed value as an initial starting speed of the motor whenever the motor is initially turned on or restarted;
wherein a controller performs at least steps b), c), d), and f) when the pump is installed or a new constant pressure setpoint is provided.