| 摘要 |
PURPOSE:To confirm that a control system including a gas engine is in the normal operation state after a control circuit operates, and to detect anomaly by installing a revolution-number detecting circuit and a gas-valve detecting circuit. CONSTITUTION:A control circuit 4 controls a gas-valve relay 5 by receiving the operation stop signal S1 for an engine from outside and transmitting a gas-valve signal S2, and opens and closes a gas-valve 2. Further, the control circuit 4 controls start and stop of a starter motor 3 by transmitting a gas-motor signal S3. A gas-valve check relay 6 is opened or closed by the opening or closing of the gas-valve relay 5, and a gas-valve check relay signal S4 is input into the control circuit 4. Said control circuit 4 receives the revolution signal S5 for the engine 1 from a revolution detecting circuit 7, and determines the next output, combined with the signal S1, and confirms operation, combined with the output signal S3. When the signals S4 and S5 corresponding to the output signals S2, S3, and S6 are not input into the control circuit 4, the state is judged abnormal, and a system power-source signal S6 is output so that a system power-source switch 8 is turned OFF, and then the gas valve 2 is closed. |
