| 摘要 |
PURPOSE:To attain efficient operation control corresponding quickly to a pressure fault at operation and start by detecting a faulty state when a pressure value is at the outside of a permissibe value and no pressure change exists in a pressure change waiting time at start. CONSTITUTION:A state signal of a pump 11 is inputted by a program 23, and a present prrssure value of a pressure sensor 13 is inputted by a program 21 and a program 22 checks the propriety. A program 24 applies pressure change wait processing when the pump 11 is in operation and the running start is executed this time depending on the result of the program 22 and the operating state of the program 23, and when no pressure rise is obtained or a pressure under operation and the operation is not started this time is at the outside of the permissible value, it is detected as a faulty state. When the faulty state is detected by the program 24, a program 25 raises an alarm command, a stop control command is transmitted to an operation circuit 10, and the circuit 10 transmits an operation stop signal to the pump 11. Thus, the supervisory control of the pump 11 is attained. |
