A Testing System Design of Dynamic Characteristics of Contactor Based on CompactRIO

In order to solve the problem of low efficiency of traditional intelligent contactor performance test, this paper proposes a contactor dynamic characteristic test and analysis system based on NI CompactRIO, which is convenient for measuring the performance index of intelligent contactor. The system includes a Human-Machine-Interaction(HMI) interface, which can control the action of the contactor to be detected and collect signals in the host computer platform. According to the trend of the collected signal waveform, the performance indexes of the contactor, such as the closing/opening time, the closing/holding power, are calculated. The system also has the functions of cyclic switching test and automatic data storage, which greatly improves the automation level and efficiency of the test. It provides data support for the improvement and optimization of the control strategy of intelligent contactor.