Application of a STO Functional Circuit Based on MCU Diagnosis in Elevator Control System
The traditional elevator control system has some disadvantages such as large volume of control cabinet,complex wiring and easy wear of contactor.According to GB/T 12668.502-2013 national standard,a two-chan-nel STO circuit with fault diagnosis function is designed and applied to elevator control system.The experiment shows that the safety integrity level of the functional circuit is SIL3 and the hardware fault margin is 1,which meets the requirements of GB/T 7588.1-2020 national standard for elevator control system.
万方数据
维普
