Pumps – Condition responsive control of pump drive motor – Having timer or delay means
Patent
1994-06-14
1996-05-14
Casaregola, Louis J.
Pumps
Condition responsive control of pump drive motor
Having timer or delay means
417 45, 415 51, F04B 4900
Patent
active
055162657
ABSTRACT:
An interface apparatus permits microprocessor-based control of an air compressor having no microprocessor-based control capabilities. The interface apparatus includes a signal converter for permitting bi-directional communication between the interface apparatus and a microprocessor-based air compressor sequencer. A processor has a predetermined logic routine which processes sequencer communication commands into electrical signals which control the operation of the compressor. The processor communicates with the signal converter. At least one AC switch selectively switches a predetermined AC voltage, on and off, in response to the logic routine. The at least one AC switch communicates with the processor. An AC voltage sensor communicates with the processor. At least one control signal is outputted from the interface apparatus to the air compressor. At least one status signal is inputted to the interface apparatus from the air compressor.
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Buhrmaster Marc A.
Harrison Duane N.
Casaregola Louis J.
Gnibus Michael M.
Ingersoll-Rand Company
Thai Xuan M.
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