System and method for detecting motor run condition

Details System and method for detecting motor run condition System and method for detecting motor run condition

2004-04-28

2008-03-11

Donovan, Lincoln (Department: 2837)

Electricity: motive power systems

Limitation of motor load, current, torque or force

C318S432000, C318S433000, C318S778000, C318S782000, C318S799000, C187S247000, C361S023000, C361S033000

Reexamination Certificate

active

07342371

ABSTRACT:
A motor control system for detecting motor run condition comprises power switches for connection to an AC line for controlling application of AC power to the motor. An input receives a motor start command. A controller is connected to the input and controls operation of the switches responsive to a motor start command. The controller includes a counter and a timer and is operable to disable the power switches if number of starts during a select interval exceeds a first threshold and to disable the power switches if motor run time after a motor start command exceeds a second threshold.

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