Rockwell Automation Technologies Incorporated

James K Newbern

Calvin C Steinweg

Roberto S Marques

Robert Dilgard

A motor control center (MCC) for an industrial system includes a plurality of sections and a safety bus. Each section includes one or more units. Each unit includes one or more industrial control devices. The safety bus is configured to receive safety signals from a safety distribution unit and delivers the safety signals to each unit of the plurality of section.

Safety bus in an industrial device assembly

For secure and safe access control, a method authenticates a user of an equipment unit with a user credential. The method determines an equipment status for the equipment unit. The equipment status includes one of energized and un-energized and one of locked and unlocked. The method determines whether the user is authorized to access the equipment unit with an equipment authorization. The determination that the user is authorized is based on the equipment status. In response to the user being authenticated and authorized to access the equipment unit energized or the user being authorized to access the equipment unit un-energized and the equipment unit being un-energized, the method releases a unit lock for the equipment unit with a unit lock credential and the user credential.

Secure and safe access control

For secure and safe access control, a method authenticates the user of an equipment unit with a user credential. The method determines whether the user is authorized to access the equipment unit with an equipment authorization. In response to the user being authenticated and authorized to access the equipment unit, the method releases a unit lock for the equipment unit with a unit lock credential or the user credential.

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Milwaukee, WI, United States of America

James K Newbern