... use of electric devices products,to control the electric valve opening and closing.Specification1,Operating valve ,380V 50Hz, three phase four wire ... field control, 12, 13, 14 terminal can not answer. Electric valve controller for automatic control system, 12, 13, 14 terminals ... stop key, cut off the three-phase power supply, change any of the three-phase power supply two phase. 5,Press the off button ...