Compressor diagnostic system for communicating with an intelligent device
AssigneeEmerson Climate Technologies, Inc.
InventorsNagaraj Jayanth, Hung Pham
Life of this patent
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Abstract
A compressor includes a motor protector which stops the compressor motor when it senses an out of specification condition. A diagnostic system monitors the status of the motor protector and includes logic circuitry that diagnoses the type of problem the compressor or the system is having based upon the running times and status of the motor in conjunction with the times and status of the tripped motor protector. The diagnostic system also includes either a discharge pressure sensor or a condenser temperature sensor, an ambient air sensor and a voltage sensor. The sensors provide information to the diagnostic system, which enable it to determine where a system fault has occurred.
Claims34
A system comprising:
- a compressor including a motor operable to power said compressor to an ON condition;
- a motor protector operable in a tripped condition to restrict power to said motor in response to motor operating parameters;
- a diagnostic device operable to diagnose a fault condition based on a moving window time average of said compressor operating in said ON condition when said motor protector is in said tripped condition.
A system comprising:
- a compressor including a motor operable to power said compressor to an ON condition;
- a motor protector operable in a tripped condition to restrict power to said motor in response to motor operating parameters;
- a diagnostic device operable to diagnose a fault condition when said motor protector is in said tripped condition based on a moving window time average of said compressor operating in said ON condition.
Dependencies are inferred from the claim text.