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US 7,686,587 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.
Claims4
A method of detecting a fault condition in a motor of a pump, the method comprising:
- measuring a bus current being provided to the motor;
- generating a fault condition code if the bus current is greater than a bus current upper limit setting;
- shutting down a drive to the motor for a predetermined time period in order to stop the pump when the bus current is greater than the bus current upper limit setting;
- and
- restarting the drive to the motor after the predetermined time period has elapsed in order to restart the pump.
2 more elements
Dependencies are inferred from the claim text.