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Allen Bradley 1756-OF8I Warranty One Year 17560F8I

 Should the contact be open when a ‘RUN’ command is given, an alarm will be issued and the 505E display will indicate that the start permissive was not met (Start Perm Not Met). The alarm does not need to be cleared but the contact must be closed before the 505E will accept a ‘RUN’ command. After a ‘RUN’ command has been accepted, the start permissive contact will have no effect on operation. If used, this input is typically connected to a Trip & Throttle valve’s closed limit switch to verify that it is in the closed position before a turbine startup is performed. 

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