JP2013142038A - Electronic safety elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic safety elevator which performs safe control without disrupting the control of a normally operating car.SOLUTION: An electronic safety elevator 1 includes: a car 10 operated by a driving force generated by a motor 21; a controller 41 for controlling the operation of the car 10; a safety device 241 for stopping the operation of the car 10; a power supply control device 242 for controlling power supply for operating the safety device 241; and an electronic controller 42 for performing safety control by diagnosing the operation of the power supply control device 242. The electronic controller 42 diagnosis the operation of the power supply control device 242 in a period from a start of the opening of a door to the completion of the closing of the door of the car 10 which is stopped.

Description

  The present invention relates to an electronic safety elevator and is preferably applied to an electronic safety elevator that performs safety control by an electronic controller.

  Conventionally, elevators have been provided with various safety devices in order to ensure safe operation of the car. Each safety device is provided with a detection device that detects an abnormality in the car and an execution device that shifts the car to a safe state.

  The detection device detects whether the car is operating within a specified operating speed, or whether the car is within the operating range in the hoistway. Examples of the detection device include a final switch, a governor (governor), a door switch, and the like. The detection device notifies the controller when an abnormality is detected.

  Then, the execution device executes a predetermined operation for shifting the car to a safe state in accordance with control from the controller. As an example of the execution device, there is an energization interrupting device that interrupts energization to the drive motor to stop the operation of the hoisting machine, an emergency stop device that connects to the car and stops the movement of the car directly.

  Conventionally, a machine-controlled controller has been mainstream, but in recent years, elevators equipped with an electronically-controlled controller are increasing.

  For example, Patent Document 1 discloses an elevator safety device for self-diagnosis of a failure of a relay driver for each of two relay drivers provided corresponding to a relay for cutting off power supplied to a motor or a brake. It is disclosed. In the elevator safety device described in Patent Document 1, when the elevator car stops during normal operation, a self-diagnosis for detecting a failure of the relay driver is performed.

  Patent Document 2 discloses a technique for performing a car operation diagnosis every time the car stops at a stop floor during normal operation.

International Publication 2011 / 048664A1 Publication International Publication No. 2005/082765

  By the way, when the elevator stops and the door of the car is open, the main rope that suspends the elevator should expand and contract due to the increase or decrease of the weight in the car when the elevator user or luggage gets on and off. It is necessary to carry out control (re-flooring control) that matches the level difference between the car floor and the landing floor generated by the vehicle. If the floor-to-floor control is not performed and a step between the car floor and the landing floor remains generated, it is dangerous for the user who gets on and off the elevator and inconveniences when carrying and unloading luggage.

  However, the diagnosis described in Patent Document 1 and Patent Document 2 cannot be diagnosed when an apparatus other than the diagnosis target is operating, and therefore, re-flooring control cannot be performed during diagnosis. That is, since the diagnosis described in Patent Document 1 and Patent Document 2 is performed when the elevator car stops, there is a problem in that re-flooring control cannot be performed during the diagnosis.

  The present invention has been made in consideration of the above points, and an object of the present invention is to propose an electronic safety elevator that performs safety control without interfering with control of a car that normally operates.

  In order to solve such problems, an electronic safety elevator according to the present invention is an electronic safety elevator in which a car operated by driving force generated by a motor, a controller for controlling the operation of the car, and the operation of the car are stopped. A safety device that controls the supply of power for operating the safety device, and an electronic controller that performs safety control by diagnosing the operation of the power supply control device. The operation of the power supply control device is diagnosed during a period from the start of the door opening to the completion of the door opening.

  According to the present invention, in an electronic safety elevator in which safety control is performed by an electronic controller, it is possible to diagnose a device that operates a safety device without hindering control of a car that normally operates.

It is a figure showing the example of whole composition of the electronic safety elevator by one embodiment of the present invention. It is a figure explaining the relationship between a controller and each part of an electronic safety elevator. It is a flowchart which shows the process sequence of the device diagnosis by an electronic controller. It is a figure which shows the state (level) of the signal in an electronic controller and a brake cutoff device. It is a flowchart which shows the process sequence which notifies abnormality detection by the operation mode of an electronic safety elevator. It is a figure which shows the example of a display in the display part of the operation panel in a cage | basket | car.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

  FIG. 1 shows an example of the overall configuration of an electronic safety elevator 1 according to this embodiment. An electronic safety elevator 1 shown in FIG. 1 is an elevator in which safety control is performed by an electronic controller 42, and includes a car 10, a hoisting machine 20, a main rope 30, and a controller 40.

  The car 10 is a car that carries people and luggage, and operates in the hoistway 50 by the driving force supplied from the motor 21 via the main rope 30.

  Inside the car 10, an in-car operation panel 11 and a car door switch 12 are provided. The in-car operation panel 11 includes an operation unit (not shown) where an operation for instructing the destination of the car 10 and opening / closing of the door is performed, and a display unit (not shown) for displaying the destination, state, and the like of the car 10. Is provided. The car door switch 12 is a switch that detects the opening / closing operation of the door of the car 10.

  An emergency stop device 13 and a position detection sensor 14 are provided outside the car 10. The emergency stop device 13 is a device that is fixed to the car 10 and suddenly stops the car 10 by sandwiching a rail in an emergency. The position detection sensor 14 is a sensor that senses the distance from the blocking plates 81 to 83 provided on each stop floor of the car 10.

  Further, final limit switches 51 and 52 are provided near the upper and lower ends of the hoistway 50 where the car 10 moves up and down. The final limit switches 51 and 52 are switches that are turned on and detect an abnormality when the car 10 exceeds a specified operation range.

  Furthermore, a shock absorber 53 is provided at the lower end of the hoistway 50. The shock absorber 53 is a physical unit that stops the car 10 by directly contacting the car 10 and absorbing the shock when the car 10 cannot be completely stopped by the braking force of the hoist 20 or the safety device 13. Stop device.

  Further, on each floor where the electronic safety elevator 1 stops, landing door switches 64 to 66 for detecting opening and closing operations of the landing doors 61 to 63 and landing buttons 67 to 69 operated by the user of the electronic safety elevator 1 are provided. Is provided.

  The hoisting machine 20 is a device that moves the car 10 in the hoistway 50 by supplying a driving force generated by the rotation of the motor 21 to the main rope 30, and includes the motor 21, the hoisting machine brake 22, The inverter 23, the interruption | blocking circuit 24, and the alternating current power supply 25 are provided.

  The main rope 30 is connected to the car 10 at one end, and a counterweight 31 is connected near the other end. The path of the main rope 30 is constructed by one or more pulleys 32-35.

  Further, a governor rope 36 that is linked to the movement of the car 10 is connected to the car 10. The governor 37 is a speed governor that rotates according to the movement of the governor rope 36. The governor 37 includes a rotary encoder 38 and a gripping device 39 that grips the governor lobe 36.

  For example, the rotary encoder 38 rotates with the rotation of the governor 37 and outputs a pulse signal to the electronic controller 42. Then, the electronic controller 42 can calculate the position and operation speed of the car 10 based on the change amount of the pulse signal.

  The controller 40 includes a control controller 41 and an electronic controller 42 that can operate independently of each other. The controller 41 mainly controls the operation of the mechanical parts and electronic parts of the electronic safety elevator 1. The electronic controller 42 electronically controls operations of various safety devices. The electronic controller 42 is realized by, for example, one or more microcontrollers. Specifically, an electronic controller 42 that performs control while synchronizing may be realized by using two microcontrollers that mutually input and output signals.

  Here, with reference to FIG. 2, the relationship between the controller 40 and each part of the electronic safety elevator 1 is demonstrated. The motor 21 shown in FIG. 2 is supplied with electric power from an AC power supply 25 via an inverter 23 to which a power circuit breaker 241 is connected.

  The power circuit breaker 241 is operated by electric power supplied from the power supply 244 via the drive system power supply cutoff device (drive system cutoff device) 242 for the electronic controller and the drive system power supply cutoff device (drive system cutoff device) 243 for the controller. To do. As shown in FIG. 2, unless both the drive system cutoff device 242 and the drive system cutoff device 243 are in the closed state, the power supply circuit breaker 241 is not energized.

  Here, as an example, it is assumed that the power breaker 241 is energized during normal operation of the electronic safety elevator 1. The power breaker 241 connects the AC power supply 25 and the inverter 23 in the energized state, and mediates power supply from the AC power supply 25 to the inverter 23. In addition, the power breaker 241 opens the connection between the AC power supply 25 and the inverter 23 in a state where the energized state is released (shut off state), and cuts off the power supply from the AC power supply 25 to the inverter 23.

  As another example, the power circuit breaker 241 may be mounted so as to open the AC power supply 25 and the inverter 23 in the energized state and connect the AC power supply 25 and the inverter 23 in the interrupted state.

  On the other hand, a hoisting machine brake 22 is provided in the vicinity of the motor 21. The hoisting machine brake 22 is supplied with electric power from a power source 223 via an electronic controller brake power cutoff device (brake cutoff device) 221 and a control controller brake power cutoff device (brake cutoff device) 222. As shown in FIG. 2, unless both the brake cutoff device 221 and the brake cutoff device 222 are closed, the hoisting machine brake 22 is not energized.

  Here, as an example, it is assumed that the hoisting machine brake 22 is in an energized state during normal operation of the electronic safety elevator 1. The hoisting machine brake 22 maintains a state in which the motor 21 is not braked in the energized state. Further, the hoisting machine brake 22 brakes the motor 21 to reduce the rotation of the motor 21 in the shut-off state.

  As another example, the hoisting machine brake 22 may be configured to brake the motor 21 in the energized state and not to brake the motor 21 in the disconnected state. In such a case, the hoisting machine brake 22 is not energized during the normal operation of the electronic safety elevator 1 and is cut off.

  The power circuit breaker 241, the drive system shut-off device 242, and the drive system shut-off device 243 are configured inside the shut-off circuit 24 shown in FIG.

  The controller 41 controls the driving force of the motor 21 supplied to the main rope 30 by controlling the power supplied from the AC power supply 25 to the motor 21 while exchanging signals with the inverter 23. Further, the controller 41 controls energization to the power breaker 241 and the hoisting machine brake 22 by notifying the drive system breaking device 243 and the brake breaking device 222 of a control signal.

  The electronic controller 42 receives signals from the governor 37, the sensor group 260, and the switch group 270. The sensor group corresponds to, for example, the position detection sensor 14 or the rotary encoder 38. The switch group corresponds to, for example, the car door switch 12 and the landing door switches 64-66. The electronic controller 42 controls energization to the power circuit breaker 241 and the hoisting machine brake 22 by notifying the drive system cutoff device 242 and the brake cutoff device 221 based on these input signals. In addition, the electronic controller 42 notifies the control controller 41 of information indicating a control result by itself as log information.

  In the electronic controller 42, the user or the luggage of the electronic safety elevator 1 rarely gets on and off, and the re-flooring control occurs less frequently, that is, between the start of the opening of the car 10 and the completion of the opening. In addition to prohibiting the execution of re-flooring control, an operation test (hereinafter also referred to as device diagnosis) for the brake cutoff device and the drive system cutoff device 242 is executed.

  Next, device diagnosis processing by the electronic controller 42 will be described with reference to FIG. In order to simplify the description, a process in which the electronic controller 42 diagnoses the brake cutoff device 221 will be described, but the electronic controller 42 can also perform device diagnosis of the drive system cutoff device 242 by the same procedure.

  In the device diagnosis shown in FIG. 3, an ON failure diagnosis and an OFF failure diagnosis are performed for the brake cutoff device 221. The ON failure diagnosis is a diagnosis for confirming whether or not an abnormality (ON failure) in which a closed state continues without being normally opened when a connection is attempted to be opened for a device in the closed state does not occur. OFF fault diagnosis is to check if an abnormal condition (OFF fault) that does not connect normally and continues to open when a device that is in an open state is connected and closed is not generated. Is a diagnosis. The diagnosis of ON failure and OFF failure by the electronic controller 42 can be performed not only for the brake cutoff device 221 but also for the drive system cutoff device 242.

  First, in step S101, the electronic controller 42 updates input information input from the governor 37, the sensor group, and the switch group. At this time, the electronic controller 42 sets an allowable operation time (allowable operation time) in the brake cutoff device 221. As the allowable operation time, for example, a time within an error of 5% of the reference time required as the response processing time is set. The electronic controller 42 may set the allowable operation time based on the statistical data so far stored in a storage device (not shown).

  Next, in step S102, the electronic controller 42 determines whether the car 10 during normal operation has stopped and door opening has started based on the input signals from the car door switch 12 and the landing door switches 64-66. Determine. When the electronic controller 42 determines that the door opening is started, the process proceeds to step S103, and when it is determined that the door opening is not started, the process is ended.

  In step S <b> 103, the electronic controller 42 outputs a command for prohibiting execution of the re-flooring control to the control controller 41. The controller 41 to which the command has been input does not execute the re-flooring control until a command for permitting execution of the re-flooring control is input in step S116 described later.

  Next, through the processing shown in steps S104 to S109, the electronic controller 42 performs ON failure diagnosis by releasing the connection of the brake breaking device 221 in the closed state.

  Here, FIG. 4 shows signal states (levels) in the electronic controller 42 and the brake cutoff device 221. The signal S11 is a signal indicating an implementation state of device diagnosis in the electronic controller 42. The signal S11 is at a high level when the electronic controller 42 is performing device diagnosis, and is at a low level when the electronic controller 42 is not performing device diagnosis.

  The signal S <b> 12 is a control signal output from the electronic controller 42 to the brake cutoff device 221. The signal S12 indicates a command (device drive command) for instructing the brake cutoff device 221 to be energized from the electronic controller 42 at a high level, and a command for instructing the brake cutoff device 221 to be deenergized from the electronic controller 42 (device cutoff) Command) at the Low level.

  The signal S13 is a signal indicating a connection state in the brake cutoff device 221. The signal S13 indicates a high level when the brake cutoff device 221 is in a closed state, and indicates a low level when the brake cutoff device 221 is in an open state.

  The initial state in FIG. 3 is a state before the ON failure diagnosis is started in step S104, and the car 10 is stopped at the stop floor, but the door opening is not started. The controller 41 performs control to open the brake breaking device 222 and cut off the power supply in order to maintain the stopped state of the car 10. On the other hand, since the electronic controller 42 outputs a high level signal S12, that is, a device drive command, the brake cutoff device 221 is in a closed state.

  When the ON failure diagnosis is started, the signal S11 becomes High level (time t1 in FIG. 4). Then, a device cutoff command is output from the electronic controller 42 to the brake cutoff device 221 (step S104). At this time, the signal S12 becomes a low level (time t2 in FIG. 4). Then, the electronic controller 42 starts measuring time (timer measurement) using a timer having a time measuring function (step S105).

  The brake cutoff device 221 to which the device cutoff command is input in step S104 changes the connection state in the device from the closed state to the open state. When the connected state transitions to the open state, the signal S13 in the brake cutoff device 221 changes from the High level to the Low level (time t3 in FIG. 4).

  Next, in step S106, the electronic controller 42 confirms whether or not the brake breaking device 221 is in an open state based on the state of the signal S13 in the brake breaking device 221. When the signal S13 is at a high level (NO in step S106), the process proceeds to step S107.

  In step S107, the electronic controller 42 determines whether or not the elapsed time (time (t3-t2) in FIG. 4) from the start of timer measurement in step S105 exceeds a preset allowable operation time. If it is determined that the elapsed time does not exceed the allowable operation time (NO in step S107), the process returns to step S106.

  If it is determined in step 107 that the elapsed time exceeds the allowable operation time (YES), it means that the brake cutoff device 221 is not in the open state even after the allowable operation time has elapsed. Determines that an ON failure has occurred, and proceeds to step S117.

  On the other hand, if the signal S13 is at the low level in step S106 (YES), since the brake cutoff device 221 is in the open state within the allowable operation time, the electronic controller 42 has no ON failure. And the process proceeds to step S108.

  In step S108, the electronic controller 42 ends the timer measurement started in step S405.

  Next, in step S109, the electronic controller 42 updates the statistical data stored in the storage device. Specifically, for example, the time (t3−t2) from when the signal S12 of the brake cutoff device 221 becomes low level to when the signal S13 becomes low level (t3−t2) is required for switching the connection state of the brake cutoff device 221. Store in memory as time.

  Next, through the processing in steps S110 to S115, the electronic controller 42 performs an OFF failure diagnosis by connecting the brake cutoff device 221 in the released state.

  First, when the OFF failure diagnosis is started, a device drive command is output from the electronic controller 42 to the brake cutoff device 221 (step S110). At this time, the signal S12 becomes High level (time t4 in FIG. 4). Then, the electronic controller 42 starts timer measurement (step S111).

  The brake cutoff device 221 to which the device drive command is input in step S110 changes the connection state in the device from the open state to the closed state. When the connection state transitions to the closed state, the signal S13 in the brake cutoff device 221 changes from the Low level to the High level (time t5 in FIG. 4).

  Next, in step S112, the electronic controller 42 confirms whether or not the brake breaking device 221 is in the closed state by the state of the signal S13 in the brake breaking device 221. When the signal S13 is at the low level (NO in step S112), the process proceeds to step S113.

  In step S113, the electronic controller 42 determines whether or not the elapsed time from the start of timer measurement in step S111 (time (t5-t4) in FIG. 4) exceeds a preset allowable operation time. If it is determined that the elapsed time does not exceed the allowable operation time (NO in step S113), the process returns to step S112.

  If it is determined in step 113 that the elapsed time exceeds the allowable operation time (YES), it means that the brake cutoff device 221 is not in the closed state even after the allowable operation time has elapsed. Determines that an OFF failure has occurred, and proceeds to step S117.

  On the other hand, if the signal S13 is at the high level in step S112 (YES), the brake cutoff device 221 is in the closed state within the allowable operation time, so that the electronic controller 42 has not caused an OFF failure. And the process proceeds to step S114.

  In step S114, the electronic controller 42 ends the timer measurement started in step S111.

  Next, in step S115, the electronic controller 42 updates the statistical data stored in the storage device. Specifically, for example, the time (t5-t4) from when the signal S12 of the brake cutoff device 221 becomes High level to when the signal S13 becomes High level required switching the connection state of the brake cutoff device 221. Store in memory as time.

  As described above, the ON failure diagnosis is completed by the processing in steps S104 to S109, and the OFF failure diagnosis is completed by the processing in steps S110 to S115. Since no abnormality is detected in either the ON failure diagnosis or the OFF failure diagnosis, the device diagnosis ends normally, and the signal S11 becomes the Low level (time t6 in FIG. 4).

  In step S <b> 116, the electronic controller 42 outputs a command for permitting execution of the re-flooring control to the control controller 41. The controller 41 to which the permission command is input resumes the execution of the re-flooring control.

  By the way, when an ON failure is detected in step S107, or when an OFF failure is detected in step S113, the electronic controller 42 determines that an abnormality has occurred, and performs the processing in the following steps S117 to S119.

  First, in step S117, the electronic controller 42 ends the timer measurement started in step S105 or S111.

  In step S118, the electronic controller 42 outputs an instruction to stop the operation of the car 10.

  Further, in step S119, the electronic controller 42 performs a process of displaying a warning at the time of abnormality detection on the in-car operation panel 11. Specifically, for example, the electronic controller 42 instructs the in-car operation panel 11 to display a warning, notify a warning by voice, turn on a button, and the like. These warnings prompt the user of the electronic safety elevator 1 to get out of the car 10 promptly. The display at the time of abnormality detection in step S119 will be described in detail later with reference to FIGS.

  Note that the processing in steps S101 to S119 may be realized at predetermined intervals (for example, 0.1 seconds) using a timer of a CPU (not shown) built in the electronic controller 42. Such an electronic controller 42 can promptly perform device diagnosis between the start of door opening of the car 10 and the completion of door opening.

  In addition, in steps S109 and S115, there is described a process of collecting the operation time required for executing a predetermined operation and storing the collected operation time in a storage device as statistical data. 42 may perform a process of comparing the operating time with the statistical data.

  Specifically, for example, the operation time collected within the past month as statistical data is used as statistical data, and the electronic controller 42 calculates the average operation time of the statistical data and the operation time collected by the current device diagnosis. Compare. The comparison result may be stored in a storage device and output to a display unit or the like.

  In particular, when the operation time collected this time is longer than the average operation time of the data in the statistics, it can be assumed that there is an increased possibility that an abnormality will occur in the shut-off device. May be notified. Note that the collection period of the past one month is an example, and an interval at which a periodic inspection for maintenance is performed may be set as the collection period.

  Next, a method for notifying abnormality detection in the operation mode of the electronic safety elevator 1 will be described. The operation mode of the electronic safety elevator 1 includes a normal mode in which normal operation is performed and a maintenance mode in which maintenance work is performed by maintenance personnel.

  The maintenance mode is activated, for example, by operating a stop switch for stopping the operation of the car 10 or an operation switch for changing the electronic safety elevator 1 to the maintenance operation mode. This stop switch or operation switch is called a maintenance switch. When the maintenance switch is in the ON state, the electronic safety elevator 1 is operated in the maintenance mode. The maintenance mode includes a state where repair and inspection are performed until the electronic safety elevator 1 is restored when a failure occurs during the normal mode and the electronic safety elevator 1 is stopped.

  FIG. 5 illustrates an abnormality detection notification process in the operation mode of the electronic safety elevator 1. When the abnormality is detected by the device diagnosis, the electronic controller 42 instructs a display process for ensuring the safety of passengers during the normal mode, and notifies the location where the abnormality is detected during the maintenance mode. Display processing is instructed.

  First, in step S201, the electronic controller 42 confirms whether an abnormality (ON failure or OFF failure) is detected in the device diagnosis. If an abnormality is detected (YES), the process proceeds to step S202. If no abnormality is detected (NO), the process proceeds to step S205. The process in step S201 is performed each time the electronic controller 42 performs device diagnosis, for example.

  In S202, the electronic controller 42 confirms whether the maintenance switch is in an ON state. If the maintenance switch is ON, that is, if it is in the maintenance mode (YES), the process proceeds to step S203. Further, when the maintenance switch is not ON, that is, in the normal mode (NO), the process proceeds to step S205.

  In step S203, the electronic controller 42 performs an abnormality notification display process in the maintenance mode. Specifically, a display process for notifying a part (for example, the brake cutoff device 221) where an abnormality is detected in the device diagnosis is performed.

  In step S204, for example, the electronic controller 42 transmits the display data processed in step S203 to the display unit of the in-car operation panel 11, and causes the display unit to display the display data.

  On the other hand, in step S205, the electronic controller 42 checks whether or not the maintenance switch was in the ON state when the previous device diagnosis was performed. If the maintenance switch is in the ON state at the previous device diagnosis execution (YES), the process proceeds to step S206. If the maintenance switch is not in the ON state at the previous device diagnosis, the process is terminated as it is.

  In step S205, the electronic controller 42 does not check whether the maintenance switch is in the ON state at the time of the previous device diagnosis, but does not check the maintenance switch at the time of the previous device diagnosis or at a predetermined time. The presence or absence of the ON state may be confirmed.

  In step S206, even though the maintenance mode is not currently set, the previous maintenance mode is used, and the display processing in the normal mode is notified to the display unit of the car operation panel. In the display process in the normal mode, when an abnormality is detected, a display that prompts the user of the electronic safety elevator 1 to get out of the car 10 is performed.

  FIG. 6A to FIG. 6C show display examples on the display unit of the in-car operation panel 11. FIG. 6A is a display example when no abnormality is detected in the normal mode. When the electronic safety elevator 1 is operating in the normal mode without detecting an abnormality, for example, the image of FIG. 6A is displayed on the display unit.

  FIG. 6B is a display example when an abnormality is detected in the normal mode. The image in FIG. 6B shows that the electronic safety elevator 1 has stopped operating on the third floor and a notification that asks the user to push the door open button and get off the car 10. For example, in step S206, the image of FIG. 6B is displayed on the display unit.

  FIG. 6C is a display example when an abnormality is detected in the maintenance mode. The image of FIG. 6C shows that the electronic safety elevator 1 has stopped operating on the third floor, and that the location where the abnormality has occurred is the brake cutoff device 221. For example, in step S204, the image of FIG. 6C is displayed on the display unit.

  In such an electronic safety elevator 1, the electronic controller 42 controls the power supply control device (the brake cutoff device 221, the drive system cutoff) that controls the supply of power for operating the safety device (the hoisting machine brake 22 and the power breaker 241). By diagnosing the operation of the device 242), it is possible to confirm whether the safety device operates normally.

  And since this device diagnosis can be performed every time the car 10 stops on the stop floor, the safety of the safety device can be ensured during normal operation.

  Moreover, in such an electronic safety elevator 1, since the device diagnosis is performed at a time when the user of the electronic safety elevator 1 and the loading and unloading of the electronic safety elevator 1 are few times from the start of the door opening to the door opening completion, the re-floor control is performed after the door opening is completed. The safety of the safety device by device diagnosis can be ensured while ensuring the safety for the user of the electronic safety elevator 1 by the re-flooring control.

  Furthermore, in such an electronic safety elevator 1, when an abnormality is detected in the device diagnosis, the operation is stopped at the stop floor of the car 10, so that an appropriate response can be promptly executed, The effect of significantly reducing the man-hours required to restore the operation of the safety elevator 1 can be expected.

  The present invention can be applied to an electronic safety elevator that performs safety control by an electronic controller.

DESCRIPTION OF SYMBOLS 1 Electronic safety elevator 10 Ride car 11 Car operation panel 12 Ride car door switch 13 Emergency stop device 14 Position detection sensor 20 Hoisting machine 21 Motor 22 Hoisting machine brake 221 Brake power shut-off device (brake shut-off device) for electronic controller
222 Brake power cutoff device (brake cutoff device) for control controller
223,244 Power supply 23 Inverter 24 Shutdown circuit 241 Power supply breaker 242 Drive system power supply cutoff device (drive system cutoff device)
243 Control system drive system power shut-off device (drive system shut-off device)
25 AC power supply 30 Main rope 31 Counterweight 32-35 Pulley 36 Governor rope 37 Governor 38 Rotary encoder 39 Gripping device 40 Controller 41 Control controller 42 Electronic controller 50 Hoistway 51, 52 Final limit switch 53 Buffer 61-63 Landing door 64- 66 Boarding door switch 67-69 Boarding button 81-83 Shut-off plate

Claims (11)

In electronic safety elevators,
A car operated by the driving force generated by the motor,
A controller for controlling the operation of the car;
A safety device for stopping the operation of the car;
A power supply control device for controlling supply of power for operating the safety device;
An electronic controller that performs safety control by diagnosing the operation of the power supply control device,
The electronic safety elevator characterized in that the electronic controller diagnoses the operation of the power supply control device during a period from the start of door opening to the completion of door opening of the car that is stopped. The electronic safety elevator according to claim 1, wherein the electronic controller performs the safety control when the car is operating in a normal operation mode. 2. The electronic safety according to claim 1, wherein the electronic controller performs an operation diagnosis of the power supply control device at least once during a period from the start of the door opening to the completion of the door opening of the car that is stopped. elevator. The electronic safety elevator according to claim 1, wherein the electronic controller outputs a command for prohibiting execution of re-flooring control to the control controller when diagnosing the operation of the power supply control device. The safety device includes a power breaker that cuts off the supply of electric power for rotating the motor,
The electronic safety elevator according to claim 1, wherein the electronic controller performs the diagnosis by interrupting or connecting the power supply control device to energize the power to operate the power breaker. The safety device includes a brake that reduces rotation of the motor,
The electronic safety elevator according to claim 1, wherein the electronic controller performs the diagnosis by interrupting or connecting the power supply control device to energize the brake to operate the brake. The car includes a display unit that displays information to notify a user of the car,
When the electronic controller detects an abnormality by operation diagnosis of the power supply control device, the electronic controller displays a display prompting the user to get out of the car on the display unit in the car. The electronic safety elevator according to claim 1. When the electronic controller detects an abnormality by operation diagnosis of the power supply control device while the car is operating in the operation mode for maintenance, the electronic controller notifies the power supply control device in which the abnormality is detected. The electronic safety elevator according to claim 7, wherein a display to be displayed is displayed on a display unit in the car. The electronic controller includes a storage device that collects an operation time required to execute a predetermined operation in an operation diagnosis of the power supply control device and stores the collected operation time as statistical data. The electronic safety elevator according to 1. The electronic safety elevator according to claim 9, wherein the electronic controller stores the operation time collected within a predetermined period during which a periodic inspection is performed as the statistical data. The electronic controller determines whether the operation time in the operation diagnosis of the power supply control device is longer than an average operation time of the statistical data stored in the storage device, and the determination result is the storage device The electronic safety elevator according to claim 9, wherein the electronic safety elevator is stored in the electronic safety elevator.