| 摘要 |
PROBLEM TO BE SOLVED: To reduce the number of poles of power supply input terminals and miniaturize equipment, in a motor control equipment having power supply input terminals for a main circuit and power supply input terminals for a control circuit. SOLUTION: First terminals 22 connecting a power rectifier 9 for a main circuit, and a second terminal 23 connecting a power rectifier 9 for a control power supply are installed. Either one input of the rectifier 9 for the control power supply is connected with one terminal out of the first terminals 22. The other input of the rectifier 9 for the control power supply is connected with the second terminal 22. A power source 1 is supplied to the input of the power rectifier 4 for the main circuit. One phase of the power source 1 supplied to the input of the first terminal 22 which is not connected with the input of the power rectifier 9 for the control power supply is connected with the second terminal 23. Hence the power is supplied to the input of the power rectifier 9 for the control power supply. By this constitution, the number of poles of power supply input terminal can be reduced. |
