Testing method for unintended car movement protection device for elevators and unintended car movement protection device for elevators
A testing method for an unintended car movement protection device for an elevator, which can shorten the time required for performing the operation test, is disclosed. The testing method includes: moving a car to a position where a floor releveling operation is enabled; making an unintended car movement protection device operate for testing; enabling the floor releveling operation by an elevator control device to control the car by way of a command signal from a control device of the unintended car movement protection device while the control device of the unintended car movement protection device simulatively sets an opened door detection state in which a car door or a landing door is detected to be opened and a power cut-off command signal to be outputted to an electric motor to drive the car; performing the floor releveling operation by way of the elevator control device in such a closed door state that the car door and the landing door are being closed; and making the car in the closed door state move by unbalanced torque in accordance with the power cut-off command signal when the car lands on a releveled floor through the floor releveling operation.
1 . A testing method for an unintended car movement protection device for an elevator to check an operation of the unintended car movement protection device with which an elevator system is provided, the method comprising:
moving a car to a position where a floor releveling operation is enabled;
making the unintended car movement protection device operate for testing, enabling the floor releveling operation by an elevator control device to control the car by way of a command signal from a control device of the unintended car movement protection device while the control device of the unintended car movement protection device simulatively sets an opened door detection state in which a car door or a landing door are detected to be opened and a power cut-off command signal to be outputted to an electric motor to drive the car;
performing the floor releveling operation by way of the elevator control device in such a closed door state that the car door and the landing door are closed; and
checking an operation of the unintended car movement protection device by making the car in the closed door state move by unbalanced torque in accordance with the power cut-off command signal when the car lands on a releveled floor through the floor releveling operation.
2 . The testing method for an unintended car movement protection device for an elevator according to claim 1 , the method comprising:
removing a protector for preventing the unintended car movement protection device from operating for testing during a regular operation; and
the unintended car movement protection device operates for testing according to the removing of the protector.
3 . The testing method for an unintended car movement protection device for an elevator according to claim 2 ,
wherein the protector includes a soft protector and a hard protector; and
the unintended car movement protection device operates for testing according to the removing of the soft protector and the hard protector.
4 . The testing method for an unintended car movement protection device for an elevator according to claim 3 , the method comprising:
removing the hard protector after the soft protector is removed; and
the unintended car movement protection device operates for testing when the hard protector is removed after the soft protector is removed.
5 . The testing method for an unintended car movement protection device for an elevator according to claim 3 ,
wherein the soft protector is removed by manipulating a dip switch provided on a control panel or a maintenance device which is connected to the elevator control device and the unintended car movement protection device in a communicative manner; and
the hard protector is removed by manipulating a short connector or a hard switch provided on the control panel or a landing.
6 . The testing method for an unintended car movement protection device for an elevator according to claim 1 ,
wherein the floor releveling operation by way of the elevator control device is executed by manipulating a maintenance device which is connected to the elevator control device and the unintended car movement protection device in a communicative manner.
7 . The testing method for an unintended car movement protection device for an elevator according to claim 6 , further characterized in that a maintenance operation is executed by manipulating the maintenance device.
8 . The testing method for an unintended car movement protection device for an elevator according to claim 1 ,
wherein a braking distance of the car is measured by opening the car door and the landing door after the car is moved by way of the unbalanced torque and the car is halted by the unintended car movement protection device.
9 . An unintended car movement protection device for an elevator comprising:
an opened or closed door detector including a car door switch and a landing door switch;
a position detector for detecting a position of a car in a hoistway; and
a control device configured to place a braking device into a braking mode and to cut off power supply to an electric motor to drive the car when it is determined based on a signal from the opened or closed door detector and the position detector respectively that the car entails unintended car movement,
wherein the control device enables a floor releveling operation by way of an elevator control device in such a closed door state that the car door and the landing door are closed, to control an operation of the car when making the unintended car movement protection device operate for testing to check an operation of the unintended car movement protection device while simulatively setting an opened door detection state of the opened or closed door detector, in which the car door or the landing door are detected to be opened and a power cut-off command signal to be outputted to the electric motor to drive the car, and
wherein the elevator control device is configured to check the operation of the unintended car movement protection device by making the car in the closed door state move by unbalanced torque in accordance with the power cut-off command signal when the car lands on the releveled floor through the floor releveling operation.