The Method of Logic Expressions with LD in the Digtal Protective Relay

摘要

the present invention is a digital protective relay in LD (Ladder Diagram) the logic expressed by way of as, in particular but the screen displayed on the LCD (Liquid Crystal Display) screen of the protection relay by downloading the logic design editor to edit a separate LD protective relay, to the right of the screen constitutes the entire LD screen for displaying a full logic, screen characterized in that configured on the left side of the screen displaying an enlarged detail LD selection selected by the user in the entire screen LD. ; According to the present invention, to the configuration and state of the logic design, and LD the function can be expected to be found in just the separate logic configuration and operating conditions through its LCD screen provided in the protective relay, without confirmation from the management screen through the computer logic to identify.