| 摘要 |
The present invention relates to a communication system for a valve driver in each room control system. The each room controller outputs internal power, and the valve driver is connected with the internal power in parallel, and the each room controller controls the valve driver by controlling a phase angle of the internal power. Thus, the present invention can simplify a structure of the each room controller by connecting the valve driver in parallel, reduce production costs, because the amount of valve drivers connecting to the each room controller increases, and shut down standby power. |
