| 摘要 |
PROBLEM TO BE SOLVED: To provide a signal control board for an elevator which can sufficiently prevent the adhesion and accumulation of dust to a contact point of an electromagnetic contactor for elevator signal control which is accommodated therein, does not cause a contact failure, and has a dust removal function.SOLUTION: In this signal control board 6, when the signal control board sends opening/closing operation commands to contact points of electromagnetic contactors 13a, 13b of an electric motor control device 9 and a brake control device 11 according to an operation status of a car of an elevator by electromagnetic contactor operation command means 14 in a box body, the control board operates the contact points of the contactors 13a, 13b so as to be switchable without applying voltages thereto by outputting operation command signals at the preparation of traveling having call registration during a stop of the car, and in addition to this, even after the lapse of a prescribed time when there is no call registration during the stop of the car, operates the contact points of the contactors 13a, 13b so as to be switchable by similarly inputting the operation command signals. Therefore, when the contact points of the contactors 13a, 13b contact with each other to bring about on-state (energized state), adhered matters of dust can be constantly shaken off from surfaces of the contact points. |
