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Actuator with diagnostics

  • US 8,972,064 B2
  • Filed: 11/06/2013
  • Issued: 03/03/2015
  • Est. Priority Date: 11/09/2011
  • Status: Active Grant
First Claim
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1. An actuator system for use with heating, ventilating and air conditioning equipment, comprising:

  • one or more actuators; and

    wherein an actuator comprises;

    a motor control mechanism;

    a motor connected to the motor control mechanism;

    a gear train connected to an output of the motor;

    an actuator shaft attached to the gear train;

    a shaft position indicator connected to the actuator shaft;

    a processor connected to the motor control mechanism and the shaft position indicator; and

    a current sensor connected to the motor control mechanism; and

    wherein;

    the processor comprises a diagnostics program;

    the processor is configured to provide an excessive power alarm if an immediate power consumption of the actuator exceeds a predetermined percentage over a given amount of measured power consumption by the motor considered to be during normal operation of the actuator.

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