In this paper,based on the analysis of the main circuit and control circuit of KJX-A AC elevator motor and brake,considering accidents caused due to the misoperation of the elevator in case of contactor contact adhesion,the main control circuit was improved by improving the control circuit,increasing the inspection frequency of the adhesion protection circuit and changing the logic control mode in the circuit,which effectively avoids the hidden danger of accident caused due to the adhesion of the contactor contacts in the elevator main circuit and improves the safety of the elevator.
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