Abstract: An elevator system that can check a function of detecting derailment of an elevating body without disconnecting the elevating body from a guide rail. The elevator system includes a conductive wire that is provided along a guide rail, a contact that is attached to the elevating body, and is configured to come into contact with the conductive wire in the case where the elevating body is disconnected from the guide rail, a control panel that is configured to detect electrical conduction between the conductive wire and the contact, and an inspection contact that is attached to a preset position of the conductive wire, and is disposed at a position that allows the inspection contact to come into contact with the contact in the case where the contact moves to the preset position.

Abstract: An elevator derailment detecting device according to the present invention detects the opened and closed states of contacts at first and second safety relays 82 and 83 (steps S1 and S2). Since a first NO contact 82b is closed, a first NC contact 82c is opened, a second NO contact 83b is closed, and a second NC contact 83c is opened, it is determined that there is no circuit failure. Then, the opened and closed state of the contactless relay 84 is detected (step S3). When the contactless relay NO contact 84b is closed and the contactless relay NC contact 84c is opened, it is determined that the counterweight 21 of the elevator 11 is in a derailed state.

Abstract: An elevator system is capable of detecting that a car has overshot a position where a limit switch operates. The elevator system includes: a limit switch; a conductive wire provided along a guide rail guiding movement of a counterweight; a contact being attached to the counterweight and moreover configured to come into contact with the conductive wire in a case where the counterweight is disconnected from the guide rail; an overshoot detection contact being attached to the conductive wire and disposed at a position that allows the overshoot detection contact to come into contact with the contact in the case where the car moves past a position where the limit switch operates; and an overshoot detection unit configured to detect that the contact is in contact with the overshoot detection contact.

Abstract: Provided is an elevator derailment detection device, which is configured to bring a first conductive wire and a second conductive wire, which are provided in a hoistway in parallel with an elevating direction of an elevating body, into conduction with each other when derailment occurs, to thereby increase a voltage applied to the second conductive wire to a level higher than a voltage applied to the second conductive wire when no derailment has occurred, and is configured to detect the derailment through detection of the increase in voltage. The elevator derailment detection device is configured to inspect the behavior of a diagnosis target by performing control to switch a state of connection between a power supply unit and the diagnosis target between a conductive state and a non-conductive state, to thereby diagnose soundness of the diagnosis target.

Abstract: An elevator derailment detecting device according to the present invention detects the opened and closed states of contacts at first and second safety relays 82 and 83 (steps S1 and S2). Since a first NO contact 82b is closed, a first NC contact 82c is opened, a second NO contact 83b is closed, and a second NC contact 83c is opened, it is determined that there is no circuit failure. Then, the opened and closed state of the contactless relay 84 is detected (step S3). When the contactless relay NO contact 84b is closed and the contactless relay NC contact 84c is opened, it is determined that the counterweight 21 of the elevator 11 is in a derailed state.

Abstract: The monitoring system (1) includes an elevator control panel (2), a monitoring device (5), an elevator control panel (3), and a monitoring device (6). The monitoring device (5) includes a communication circuit (14), a control circuit (13), and a power supply circuit (12). The monitoring device (6) includes a control circuit (26) and a power supply circuit (25). The power supply circuit (12) supplies power from the elevator control panel (2) to the control circuit (13). The control circuit (13) supplies power to the communication circuit (14). The control circuit (13) and the control circuit (26) are connected via a communication wire (32) so that information can be transmitted to the control circuit (13).

Abstract: An elevator system is capable of detecting that a car has overshot a position where a limit switch operates. The elevator system includes: a limit switch; a conductive wire provided along a guide rail guiding movement of a counterweight; a contact being attached to the counterweight and moreover configured to come into contact with the conductive wire in a case where the counterweight is disconnected from the guide rail; an overshoot detection contact being attached to the conductive wire and disposed at a position that allows the overshoot detection contact to come into contact with the contact in the case where the car moves past a position where the limit switch operates; and an overshoot detection unit configured to detect that the contact is in contact with the overshoot detection contact.

Abstract: An elevator system that can check a function of detecting derailment of an elevating body without disconnecting the elevating body from a guide rail. The elevator system includes a conductive wire that is provided along a guide rail, a contact that is attached to the elevating body, and is configured to come into contact with the conductive wire in the case where the elevating body is disconnected from the guide rail, a control panel that is configured to detect electrical conduction between the conductive wire and the contact, and an inspection contact that is attached to a preset position of the conductive wire, and is disposed at a position that allows the inspection contact to come into contact with the contact in the case where the contact moves to the preset position.