This article analyzes and summarizes the application of EMC controller in realizing automatic startup of fine water pump motor for desalted water in Fudao,and further develops the application of small PLC used in low-voltage motor control circuit.

• 针对中海石油化学股份有限公司电机控制器EMC在实现脱盐水精制水泵电机自启动功能应用案例和问题进行分析、总结,进一步开发小型PLC在低压电机控制领域的应用。