Importance

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Abstract

The air damper or valve actuator system with an alarm includes a motor coupled to the air damper or valve, an electrical power sensor for sensing an electrical power characteristic of the motor during the motor's motive operation of the air damper or valve and a threshold sensor. The threshold sensor determines and generates an alarm signal when the power characteristic exceeds a predetermined value during the motor's motive operation. An end point sensor is utilized to detect when the motor and coupled air damper or valve reaches a mechanical operational end point thereby disabling the alarm. The method for detecting and issuing an alarm indicative of potential impending mechanical failure includes sensing the product characteristic and determining and generating an alarm when the power characteristic exceeds a predetermined value before the motor driven actuator reaches a pre-set mechanical end position. The distributed system which monitors a plurality of actuator systems via a central control station.

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First Claim