Diagnostic System
AssigneeEmerson Climate Technologies, Inc.
InventorsHung M. PHAM, Nagaraj JAYANTH
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Abstract
A diagnostic system for a compressor is provided. The compressor includes a compression mechanism and a motor. The diagnostic system includes processing circuitry and memory and may be operable to differentiate between a low-side fault and a high-side fault by monitoring a rate of current rise drawn by the motor for a first predetermined time period following compressor startup. The diagnostic system may be operable to predict a severity level of a compressor condition based on a fault history stored in the memory.
Claims20
A diagnostic system for a compressor including a compression mechanism and a motor, the diagnostic system comprising processing circuitry and memory and operable to differentiate between a low-side fault and a high-side fault by monitoring a rate of current rise drawn by said motor for a first predetermined time period following compressor startup, said diagnostic system operable to predict a severity level of a compressor condition based on a fault history stored in said memory, said processing circuitry differentiates amongst cycling of a high-pressure cutout switch, cycling of a low-pressure cutout switch, and cycling of a motor protector based on said rate of current rise in combination with an ON time of the compressor and an OFF time of the compressor.
A diagnostic system for a compressor including a compression mechanism and a motor, the diagnostic system comprising processing circuitry and memory and operable to differentiate between a low-side fault and a high-side fault by monitoring a rate of current rise drawn by said motor for a first predetermined time period following compressor startup, wherein said processing circuitry is operable to predict a severity level of a compressor condition based on at least one of a sequence of historical compressor fault events and a combination of the types of said historical compressor fault events.
A compressor comprising a shell, a compression mechanism, a motor, and a diagnostic system, said diagnostic system including processing circuitry and memory and operable to differentiate between a low-side fault and a high-side fault by monitoring a rate of current rise drawn by said motor for a first predetermined time period following compressor startup, said diagnostic system operable to predict a severity level of a compressor condition based on a fault history stored in said memory, said processing circuitry differentiates amongst cycling of a high-pressure cutout switch, cycling of a low-pressure cutout switch, and cycling of a motor protector based on said rate of current rise in combination with an ON time of the compressor and an OFF time of the compressor.
Dependencies are inferred from the claim text.