Remotely-Programmable Control Circuit for Single-Phase Motor
AssigneeMcMillan Electric Company
InventorsDewain Wasson, Karmen Darrell Cox
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Abstract
An HVAC control system, associated brushless direct current motor, and methods of operation are disclosed. One such control system includes a brushless direct current motor and an optically-isolated interface exposing control access to the brushless direct current motor. The system includes a first programmable controller electrically connected to the brushless direct current motor, the programmable controller configured to receive a control signal via the optically-isolated interface, and a second programmable controller providing the control signal to the optically-isolated interface.
Claims26
An HVAC control system comprising:
- a brushless direct current motor;
- an optically-isolated interface exposing control access to the brushless direct current motor;
- a first programmable controller electrically connected to the brushless direct current motor, the programmable controller configured to receive a control signal via the optically-isolated interface;
- and
- a second programmable controller providing the control signal to the optically-isolated interface.
A motor controller comprising:
- an optically-isolated interface exposing control access to a brushless direct current motor;
- a first programmable controller electrically connected to the brushless direct current motor, the programmable controller configured to receive a control signal via the optically-isolated interface;
- a second programmable controller providing the control signal to the optically-isolated interface.
A method of operating a brushless direct current motor, the method comprising:
- sending a control signal to a first programmable controller from a second programmable controller, via an optically isolated interface circuit, a first operational limit of the brushless direct current motor, the first programmable controller electrically connected to and integrated with the brushless direct current motor;
- controlling operation of the brushless direct current motor via the optically isolated interface circuit, whereby operation of the brushless direct current motor is limited by the operational limit.
Dependencies are inferred from the claim text.