| 摘要 |
PROBLEM TO BE SOLVED: To provide a water supply device that can detect an abnormal state of a CPU. SOLUTION: The water supply device includes: pumps 3-1, 3-2 for supplying water; a pressure detector 8 for detecting water pressure at a discharge side of the pump to output a water pressure signal showing the detected water pressure; electric motors 4-1, 4-2 for driving the pumps; inverters INV1, INV2 for controlling the speed of the electric motors; and a control section CU for receiving the water pressure signal from the pressure detector to control the inverters by the CPU; a pressure switch 9 for outputting an ON signal showing that the switch is turned on when the pressure at the discharge side of the pump becomes lower than a set pressure; and a reset means for resetting the CPU when the pressure switch outputs the ON signal. COPYRIGHT: (C)2013,JPO&INPIT |
