Electrical transmission or interconnection systems – Personnel safety or limit control features
Reexamination Certificate
2011-01-11
2011-01-11
Wallis, Michael Rutland (Department: 2836)
Electrical transmission or interconnection systems
Personnel safety or limit control features
Reexamination Certificate
active
07868487
ABSTRACT:
An apparatus and method for restricting operation of a power delivery system are disclosed. In at least some embodiments, the apparatus includes a first input terminal at which is received a first command signal, and a second input terminal at which is received an additional signal. The apparatus further includes an output terminal at which is provided a control signal, and a circuit that generates the control signal based at least indirectly upon the first command and additional signals. The control signal generated by the circuit is configured to cause the power delivery system to not deliver at least one type of power when the first command signal indicates a command to do so, if the additional signal indicates an acceptability status. In some embodiments, the power delivery system is an isolation system (e.g., safety isolation system) as are employed in industrial environments, and the apparatus is a permissive module.
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Scharnick Michael
Zbytowski Stephen
Dudek Whyte Hirschboeck
Kuszewski Alexander R.
Miller John M.
Rockwell Automation Technologies Inc.
Rutland Wallis Michael
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