| 摘要 |
PURPOSE:To shorten an inspection time, by quickening the reset of one side of the output relay contacts of a trip circuit, when an output section is inspected. CONSTITUTION:After a relay 11L is turned ON by inspection starting command, relays AX, BX are turned ON at the same time after a specified time. Then, via contacts A1, B1, a responding relay TAX is excited and a contact TAXa is closed, and after a fixed time, by a main detecting relay MPU1, the working of the responding relay TAX is confirmed. After that, by the main detecting relay MPU1 and an accident detecting relay MPU2, reset command is directed to the respective output relays AX, BX, and the command and the reset of the responding relay TAX are confirmed. In this case, by executing the reset of the output relay BX earlier than the reset of the relay AX, the reset of the responding relay TAX can be quickened, and the whole inspection time is shortened. |
