... 50Hz, three phase four wire system.2,Control power, BFA-1 1.1Kw BFA-2 1.1Kw-4 Kw.3,Environment Temperature ... earthing .2,Controllers and electrical installations of the circuit number is the same, cable by the same terminal, the controller and ... terminal can not answer. Electric valve controller for automatic control system, 12, 13, 14 terminals used to "auto away" and "auto off" the corresponding ...