| 摘要 |
PROBLEM TO BE SOLVED: To provide a fan motor drive controller for ventilating a fan, capable of reducing omitted or forgotten control signal line connection operation at maintenance and inspection. SOLUTION: This controller is provided with a ventilating fan control circuit box 1, having a ventilating fan controlling means 3 converting a command for setting the capacity of a ventilating fan 8 from an operating switch 24 into motor drive voltage and a motor drive circuit box 10 connected with a fan motor 23, mounted with a DC motor and having a motor drive control means 12 for driving it. The ventilating fan control circuit box 1 includes a first communication means 4 converting motor drive voltage transmitted from the ventilating fan control means 3 into a communication signal, and the motor drive circuit box 10 includes a second communication means 13 converting a communication signal transmitted from the first communication means 4 via a communication line 22 into a motor drive voltage to transmit it to the motor drive control means 12. |
