Method and apparatus for determining and handling brake...

Electricity: motive power systems – Induction motor systems – Primary circuit control

Reexamination Certificate

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Details

C318S807000, C318S808000, C318S810000, C318S812000, C318S563000

Reexamination Certificate

active

07148652

ABSTRACT:
A controller for a variable frequency drive monitors electrical power from a variable frequency drive motor while a brake is maintaining a load driven or moved by the motor without requiring additional feedback components of a closed loop configuration. If excess electrical power is being generated by the motor, an undesirable condition in the brake is indicated. Support or maintenance of the load is assumed by the motor in that event. Appropriate alarms or indicators are also activated.

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Safetronics, AD10 System Automation Drive Specifications, Apr. 2001, found at www.safetronics.com.

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