Electronic Trapped Keys

摘要

The present disclosure describes a system for the integration of trapped key interlock devices into an industrial control system through the use of an electronic trapped key system that integrates the management of state and permissions of trapped keys with their associated mechanical operators in addition to functional safety controllers.

主权项

1. A trapped key interlock system comprising:
a trapped key interface device; an access control module operably connected to the trapped key interface device the access control module having an electronic control for permitting the actuation of an open or close state of a latching mechanism; a communication interface operably connected to the access control module and the control system; and the control system operably connected to an industrial automation device for controlling the operation of a machine, the control system adapted to authenticate an access request from a trapped key through the communication interface and log the state changes.