Fault Diagnosis and Display Device of Excavator Electrical System by Serial Communication and Its Method

摘要

The present invention relates to an abnormality diagnosis and a display apparatus for an excavator electrical system by serial communication, and more particularly, to an abnormality diagnosis apparatus for an excavator, which diagnoses abnormality of an electric system of an excavator through an abnormality diagnosis circuit inside the controller, And displays the result on the liquid crystal display device.;In the conventional fault diagnosis apparatus for an excavator electrical system, an inspection intermediate module is inserted between the control unit and the electric system separately from the control unit, and a method of diagnosing the electric system abnormality with the intermediate module is adopted, There has been a problem that it is impossible to recognize the abnormality of the electric system during operation of the excavator and the fault condition must be known only through the intermediate module. However, in the present invention, The present invention relates to an abnormality diagnosis and display apparatus for an electric system of an excavator, and more particularly, to an abnormality diagnosis and display apparatus for an excavator electrical system.