Back to results
US 7,815,420 B2Granted
Pump controller system and method
AssigneeSta-Rite Industries, Inc.
InventorRobert M. Koehl
Life of this patent
Estimating the term…
Abstract
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.
Claims5
A method of detecting a fault condition in a motor of a pump, the method comprising:
- positioning a temperature sensor on a heat sink of a controller;
- sensing a first temperature value of the heat sink with the temperature sensor;
- generating and storing a fault condition code if the first temperature value is greater than a temperature upper limit;
- shutting down a drive to the motor;
- sensing a second temperature value of the heat sink with the temperature sensor;
- and
- attempting to restart the drive to the motor if the second temperature value is less than a limp mode temperature limit.
4 more elements
Dependencies are inferred from the claim text.