| 摘要 |
PURPOSE:To open a door and maintain without stopping the entirety of a monitor system by switching an FF circuit by the insertion of an operator key and disabling a door opening detection sensor. CONSTITUTION:At the time of inserting the operator key, an operator key switch 3 is turned on, and the FF 6 is reset to turn a transistor 8 on, so that the driving coil of a relay 9 is excited to turn off a contact. Accordingly, even when the door opening detection switch 11 is turned on, the input of the inverter 13 of a monitor 2 does not go to a low level, a DOP signal indicating an abnormal state of opening the door is not outputted. |
