JPH11180654A - Rescue operation controller of elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reliably prevent a short-circuit accident of an IGBT of an inverter for the rescue operation. SOLUTION: Before a rescue operation controller 7 receives power supply from an emergency power source 5 in an emergency of an elevator and starts a rescue operation inverter 8 for drivingly controlling an induction motor 4 for driving the elevator, a second power source 11 for supplying D.C current to a drive device 9 is started, the establishment of the drive device is confirmed, an opening and closing means of a main circuit is input, and sequence control is so performed that D.C power may be supplied from the emergency power source to an inverter device for the rescue operation. Therefore, the short-circuit accident between D.C main circuit power voltages is prevented from being generated caused by wrong ignition of the IGBT in the rescuing operation inverter device 8, and reliability of the circuit operation is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator rescue operation control device.

[0002]

2. Description of the Related Art Conventionally, a main control device of an elevator has a power failure,
An elevator rescue operation control device that performs an emergency rescue operation of an elevator in order to rescue passengers in a car when operation becomes inoperable due to a failure or the like has a configuration as shown in FIG. This conventional elevator rescue operation control device,
A main controller 1 for controlling the elevator operation in normal times, a contactor 2 for closing the motor power supply in normal times, a contactor 3 for closing the motor power supply in emergency,
An induction motor 4 for driving an elevator, an emergency power source 5 such as a battery serving as a power source for emergency rescue operation, a charger 6 for charging the emergency power source 5, a rescue operation sequence that operates in an emergency A rescue operation control device 7 for performing control and inverter control, a rescue operation inverter device 8 for driving and controlling the induction motor 4 under the control of the rescue operation control device 7 during rescue operation, and output from the rescue operation control device 7 A drive device 9 for driving each semiconductor element in the rescue operation inverter device 8 by the semiconductor element control signal a, a contactor 10 for supplying power from the emergency power supply 5 to the rescue operation control device 7, and an emergency power supply 5 Upon receiving the DC power, the DC power is converted into DC power of a predetermined current and voltage, and the drive device 9
DC / DC converter 11 to supply power to emergency power supply 5
Capacitor DC, which serves as a voltage source for the rescue operation inverter device 8 by charging the DC power supplied from the
A contactor 13 for supplying the DC power of the emergency power supply 5 to the C converter 11 is provided.

In this conventional elevator rescue operation control device, when an abnormality such as a power failure or a failure occurs and the operation of the elevator car cannot be controlled by the main control device 1,
The main controller 1 outputs a closing signal b to the contactor 10 and supplies DC power of the emergency power source 5 to the rescue operation controller 7,
Accordingly, the rescue operation control device 7 turns on the contactor 13 to start the control, starts supplying DC power from the emergency power supply 5 to the DC / DC converter 11, and closes the contactor 3 to perform the rescue operation. The induction motor 4 can be driven by the inverter device 8 for use. After that, the rescue operation control device 7 outputs a semiconductor element control signal a to the drive device 9 to actually drive the induction motor 4, and the drive device 9 receives this and converts it into an element drive signal c to rescue. The driving of the semiconductor elements in the driving inverter device 8 is started, and the induction motor 4 is driven by the output from the rescue driving inverter device 8 to perform the rescue operation of the elevator car to rescue the passengers in the car.

[0004]

However, such a conventional elevator rescue operation control device has the following problems. When a power transistor is used as a semiconductor element in the rescue operation inverter device 8, the power transistor performs a switching operation by current drive according to an element drive signal c from the drive device 9. Therefore, there is no current source unless power is supplied to the drive device 9, so that even if noise occurs in the circuit of the rescue operation inverter device 8, the power transistor does not turn on. Therefore, in the system employing the inverter device for rescue operation using such a current-driven power transistor, even if the main circuit voltage is constantly applied to the smoothing capacitor 12, the inverter device 8 is not particularly adversely affected.

However, when an inverter device using an IGBT element, which is a higher-speed switching element, is employed to simplify the circuit configuration and improve inverter control performance, the IGBT element has a gate circuit of a voltage-driven switching element. In addition, when noise occurs in the circuit, the potential change of the gate voltage occurs, and the IGBT element is erroneously fired even though the operation signal a is not input from the drive device 9, which may cause a main circuit short circuit accident. was there.

In order to solve such a problem, I
In a rescue operation control device employing a rescue operation inverter device 8 using a voltage-driven switching element such as a GBT element, the relationship between the establishment of the power supply of the drive device 9 and the timing of the main circuit voltage input to the smoothing capacitor 12 is important. Therefore, it is necessary to keep the power supply of the drive device 9 longer than the main circuit voltage.

The present invention has been made to solve such a conventional technical problem, and a rescue operation control apparatus for an elevator having a rescue operation inverter device using a voltage-driven switching element such as an IGBT element. In the above, the power supply of the switching element drive device is always established before the rescue operation main circuit is turned on, thereby preventing malfunction of the semiconductor element in the rescue operation inverter device and providing a highly reliable rescue operation. The purpose is to be able to.

[0008]

An elevator rescue operation control apparatus according to the present invention receives power from an emergency power supply and the emergency power supply during an emergency of an elevator, and supplies an induction motor for driving the elevator. Operation inverter device that drives and controls the inverter, a second power supply that constantly outputs DC power in the elevator regardless of normal or emergency situations, and controls ignition of each semiconductor element in the rescue operation inverter device. And a drive device that applies a reverse bias voltage to the off side as a drive signal for the semiconductor element during a stop period of the rescue operation inverter device, and a control signal for the drive device that is started in an emergency of the elevator and is activated. Rescue operation control means.

In the elevator rescue operation control device according to the first aspect of the present invention, the second power supply constantly supplies DC power to the drive device irrespective of whether the elevator is in a normal state or in an emergency. During the stop period, the drive device applies a reverse bias voltage to the off side as a drive signal for a semiconductor element in the inverter device. Then, in an emergency, the rescue operation control device is activated to supply a control signal to the drive device, and the drive device drives a semiconductor element in the rescue operation inverter device. For this reason,
Even when a voltage-driven element is used as a semiconductor element in the rescue operation inverter device, even if noise is generated in the circuit during the stoppage of the rescue operation inverter device, the semiconductor element in the circuit is erroneously fired. Nothing.

A rescue operation control apparatus for an elevator according to a second aspect of the present invention is a rescue operation control apparatus which receives power from an emergency power source and the emergency power source in an emergency of the elevator to drive and control an induction motor for driving the elevator. An inverter device, opening and closing means interposed in a main circuit from the emergency power supply to the rescue operation inverter device, and a drive device for controlling ignition of each semiconductor element in the rescue operation inverter device. A second power supply that starts up in an emergency of the elevator and supplies DC power to the drive device, starts up in an emergency of the elevator, starts up the second power supply, provides a control signal to the drive device, and Rescue operation control means for closing the opening / closing means after confirming activation of the drive device.

In the elevator rescue operation control apparatus according to the second aspect of the present invention, power is supplied from an emergency power supply in an emergency of the elevator, and a rescue operation inverter device for driving and controlling an induction motor for driving the elevator is activated. Before that, first, a second power supply for supplying DC power to the drive device is activated, and after confirming that the drive device has been established, an opening / closing means of the main circuit is turned on to rescue the inverter device from the emergency power supply. To start supplying DC power. Therefore, a short circuit between the DC main circuit voltages due to a malfunction of the semiconductor element in the rescue operation inverter device can be prevented.

According to a third aspect of the present invention, there is provided the elevator rescue operation control apparatus according to the first aspect of the present invention, further comprising a power supply circuit for abutting a commercial power supply and the emergency power supply instead of the second power supply. In normal times, the drive device is operated by commercial power using the butt power circuit,
The rescue operation inverter device is actively held in an inactive state by the drive device, and the drive device is operated by an emergency power supply in an emergency, and the rescue operation inverter device is operated by the drive device.
Therefore, a short circuit between the DC main circuit voltages due to a malfunction of the semiconductor element in the rescue operation inverter device can be prevented.

According to a fourth aspect of the present invention, there is provided an elevator rescue operation control device which receives power from an emergency power source and the emergency power source during an emergency of the elevator to drive and control an induction motor for driving the elevator. An inverter device, switching means interposed in a main circuit from the emergency power supply to the rescue operation inverter device, a smoothing capacitor for smoothing a DC input to the rescue operation inverter device, and a rescue operation. A drive device for controlling the firing of each semiconductor element in the inverter device, a second power supply for supplying DC power to the drive device, and starting the elevator in an emergency to provide a control signal to the drive device; Closing the opening / closing means, opening the opening / closing means at the end of the emergency rescue operation of the elevator, and It said second power source after confirming a voltage drop of the support is obtained by a rescue operation controller means for stopping.

In the elevator rescue operation control device according to the fourth aspect of the present invention, when the emergency rescue operation is completed, the opening and closing means of the main circuit for the emergency rescue operation is first opened to check the voltage drop of the smoothing capacitor. Thereafter, the drive device is stopped by stopping the second power supply, and the output of the drive signal from the drive device to the rescue operation inverter device is stopped. For this reason, when the main circuit is opened to stop the rescue operation, the drive device is not stopped before the smoothing capacitor is completely discharged, and a short circuit accident due to erroneous firing of the semiconductor element in the inverter device for the rescue operation. Can be reliably prevented.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows a first embodiment of the present invention. An elevator rescue operation control device according to this embodiment includes a main control device 1 that controls elevator operation in normal times, a contactor 2 that normally closes for power supply of an electric motor, and a contactor 2 similar to the conventional example illustrated in FIG. A contactor 3 that closes to supply power to the motor in an emergency, an induction motor 4 for driving an elevator, an emergency power source 5 such as a battery that is a power source for emergency rescue operation, and an emergency power source 5
, A rescue operation control device 7 that performs rescue operation sequence control and inverter control that operate in an emergency, and controls the induction motor 4 under the control of the rescue operation control device 7 during rescue operation Drive device 9 that drives each semiconductor element in the rescue operation inverter device 8 by the semiconductor device control signal a output from the rescue operation inverter device 8 and the rescue operation control device 7, and rescue operation control from the emergency power supply 5 A contactor 10 for supplying power to the device 7;
The DC / DC converter 11 serves as a second power supply that converts the voltage into DC power and supplies it to the drive device 9. The DC power supplied from the emergency power supply 5 is charged, and the DC / DC converter 11 is charged with the voltage source of the rescue operation inverter device 8. A smoothing capacitor 12.

However, as a feature of this embodiment, the contactor 13 for supplying the DC / DC converter 11 with the DC power of the emergency power supply 5 is omitted from the conventional example shown in FIG.

Next, the operation of the elevator rescue operation control device according to the first embodiment having the above configuration will be described.
In normal times, DC power rectified by the charger 6 is supplied from a commercial power supply to the DC / DC converter 11 as power, and DC power is supplied from the emergency power supply 5 to the DC / DC converter 11 in an emergency. That is, the DC / DC converter 11 is always operating, and the drive device 9 using the DC / DC converter 11 as a power source is always operating.

Thus, the drive device 9 is capable of controlling the operation of the rescue operation control device 7 when the control signal a for the semiconductor element in the inverter device is not supplied from the rescue operation control device 7.
Even when power is not supplied to the inverter device, outputs an element drive signal c for turning off the semiconductor element in the inverter device, and when the rescue operation control device 7 operates and the control signal a is given, the control signal is converted to an element drive signal c.
And drives the switching semiconductor element in the inverter device 8 for rescue operation.

When an abnormality such as a power failure or a failure actually occurs and the operation of the elevator car cannot be controlled by the main controller 1, the main controller 1 outputs a closing signal b to the contactor 10 to rescue the elevator car. The operation control device 7 is supplied with DC power from the emergency power supply 5, and the contactor 3 is closed so that the induction motor 4 can be driven by the rescue operation inverter device 8. Thereafter, the rescue operation control device 7 outputs a semiconductor device control signal a to the drive device 9 for actually driving the induction motor 4, and the drive device 9 receives the signal and converts it into a main circuit device drive signal c. The drive of the semiconductor element in the rescue operation inverter device 8 is started, and the induction motor 4 is driven by the output from the rescue operation inverter device 8 to perform the rescue operation of the elevator car to rescue the passengers in the car. .

Therefore, in the elevator rescue operation control device of the first embodiment, the semiconductor element in the inverter device 8 for rescue operation is always fixed to the off side until driving by the element drive signal c is started. Even if a malfunction noise occurs when the main circuit power supply for an emergency is turned on, a false ignition does not occur, and a short circuit accident of a semiconductor element in the inverter device 8 can be prevented. Reliability is improved.

Next, a second embodiment of the present invention will be described with reference to FIGS.
A description will be given based on FIG. In the elevator rescue operation control device according to the second embodiment, a main circuit input contactor 17 is further added to the configuration of the conventional example shown in FIG. 8, and the control operation of the drive device 9 is established. In this case, the answerback signal d is returned to the rescue operation control device 7, and the rescue operation control device 7 sends the answerback signal d from the drive device 9.
Is confirmed, and then the main circuit input contactor 17 is turned on by the input signal e. Regarding other components, the same components as those of the conventional example shown in FIG. 8 are denoted by the same reference numerals.

In the elevator rescue operation control apparatus according to the second embodiment, as shown in the flowchart of FIG. 3 and the timing chart of FIG. When the operation control of the car becomes impossible, the main control device 1 outputs the closing signal b to the contactor 10 and supplies the rescue operation control device 7 with the DC power of the emergency power supply 5 (timing t1; step). S
1, S2), whereby the rescue operation control device 7 turns on the contactor 13 to start the control, starts supplying DC power from the emergency power source 5 to the DC / DC converter 11, and switches the contactor 3 on. Closed and rescue operation inverter device 8
Thereby, the induction motor 4 can be driven (timing t2; step S3).

When DC power is supplied from the emergency power supply 5 to the DC / DC converter 11, the DC / DC
The converter 11 starts the conversion operation and supplies the drive device 9 with the drive device 9 at a timing t3.
Is established, the drive device 9 returns the control establishment answerback signal d to the rescue operation control device 7 (step S4).

When receiving the answer back signal d, the rescue operation control device 7 outputs a closing signal e to the main circuit closing contactor 17 to close it (timing t4; step S5).

Thereafter, the rescue operation control device 7 outputs a semiconductor device control signal a to the drive device 9 for actually driving the induction motor 4, and the drive device 9 receives the signal and outputs a main circuit device drive signal c. The driving of the semiconductor elements in the rescue operation inverter device 8 is started, the induction motor 4 is driven by the output from the rescue operation inverter device 8 to perform the rescue operation of the elevator car, and the passengers in the car are removed. Rescue (Step S6).

In the elevator rescue operation control apparatus according to the second embodiment, the main circuit is not turned on when the drive signal c of the semiconductor element in the rescue operation inverter 8 is in a non-voltage state. It is possible to prevent the occurrence of a short circuit accident of the semiconductor element in the inverter device 8 due to erroneous firing of the element, thereby improving the reliability of the rescue operation.

In the second embodiment,
Although the sequence of turning on the main circuit after confirming the establishment of the control power supply of the drive device 9 is performed, instead of this, the off state of the semiconductor element in the inverter device is confirmed, and the confirmation signal is used as the establishment signal d. Alternatively, a sequence in which the contactor 17 is controlled to be turned on at a timing when the time is counted by a timer and a time when control establishment can be anticipated has elapsed may be used.

Next, a third embodiment of the present invention will be described with reference to FIG. The elevator rescue operation control device according to the third embodiment is different from the circuit configuration according to the first embodiment illustrated in FIG. 1 in that a transformer 20 that steps down a commercial power supply as a power supply during normal operation, Rectifier diode 21 for rectifying the output voltage of transformer 20, DC / DC converter 11
Power supply contactor 22 for supplying DC power to the drive device 9 from the power supply, and the output limiting resistor 2 of the DC / DC converter 11 installed in parallel with the power supply contactor 22
3. A butt power supply circuit 25 including a backflow prevention diode 24 for preventing a voltage source rectified from a commercial power supply from flowing back to the DC / DC converter 11
It is characterized in that it is provided between the DC converter 11 and the drive device 9. The other components are the same as those of the first embodiment, and the same components are denoted by the same reference numerals.

In the elevator rescue operation control apparatus according to the third embodiment, the power supply to the drive unit 9 is supplied by a butt power supply circuit 25 between the commercial power supply and the emergency power supply 5, and in normal times, A commercial power supply is stepped down by a transformer 20 and DC power rectified by a rectifying diode 21 is supplied. On the other hand, in an emergency, the rescue operation control device 7 outputs a control signal “a” to the drive device 9 and gives a contact signal 22 to the contactor 22 so that the emergency power supply 5
The DC power converted by the DC / DC converter 11 is supplied through the contactor 22. As a result, the drive device 9 is operated in normal times regardless of an emergency. The resistor 23 on the output side of the DC / DC converter 11 limits the output of the DC / DC converter 11 so that the rectified power supply side of the commercial power supply becomes the current source of the semiconductor element drive device 9 in normal times.

As described above, in the third embodiment, similarly to the first embodiment, the element driving signal c for turning off the semiconductor element in the inverter device in normal times is output, and the rescue operation is performed. When the control device 7 operates and receives the control signal a, the control signal a is converted and the device drive signal c is output to drive the switching semiconductor device in the rescue operation inverter device 8. The semiconductor element in the rescue operation inverter device 8 is always fixed to the off side until driving by the element drive signal c starts, so that even if malfunction noise occurs when the main circuit power supply for emergency is turned on, erroneous ignition will occur. Since no short circuit occurs, the occurrence of a short circuit accident of the semiconductor element in the inverter device 8 can be prevented, and the reliability of the rescue operation is improved.

Next, a fourth embodiment of the present invention will be described with reference to FIGS. The elevator rescue operation control device according to the fourth embodiment is different from the circuit configuration of the second embodiment shown in FIG. 2 in that the rescue operation control device 7 controls the voltage signal of the smoothing capacitor 12 of the main circuit when the rescue operation is stopped. g, and a control function for opening the main circuit input contactor 17 and opening the power supply contactor 13 of the DC / DC converter 11 in a sequence described later is additionally provided.

That is, the sequence of the emergency rescue operation control when the operation control of the elevator car by the main controller 1 becomes impossible due to the occurrence of an abnormality such as a power failure or a failure is as follows.
Although shown in the flowchart of FIG. 3 and the timing chart of FIG. 4, when the emergency rescue operation is stopped, the operation is performed as shown in the flowchart of FIG.

When the main circuit voltage is dropped to stop the control upon completion of the rescue operation (step S11), the rescue operation control device 7 opens the main circuit input contactor 17 to discharge the smoothing capacitor 12 (step S12). The main circuit voltage signal g is confirmed, and it is confirmed that the voltage of the emergency main circuit is completely reduced or the voltage of the semiconductor element in the rescue operation inverter device 8 is reduced to a safe area (step S13). Then, the contactor 13 for the DC / DC converter 11 is opened, the power supply of the drive device 9 is turned off, and the output of the drive signal c to the semiconductor element in the rescue operation inverter device 8 is stopped (step S).
14).

In the elevator rescue operation control device according to the fourth embodiment, the drive device 9 is stopped after confirming that the voltage of the emergency main circuit has completely dropped to the safe area, thereby reducing the noise. Inverter device 8 in others
Even if a semiconductor element in the element is erroneously fired, a short-circuit current does not flow, and the circuit can be protected.

In each of the above embodiments, the semiconductor device in the inverter device 8 for rescue operation is applied not only to a voltage-driven semiconductor device but also to a current-driven circuit of a normal power transistor semiconductor device. And thereby the reliability of the circuit operation can be improved.

[0036]

According to the first aspect of the present invention, the second power supply constantly supplies DC power to the drive device regardless of whether the elevator is in normal use or in an emergency, and the rescue operation inverter device is stopped during the suspension period. During the operation, the drive device applies a reverse bias voltage to the off side as a drive signal for the semiconductor element in the inverter device, and in an emergency, the rescue operation control device starts and gives a control signal to the drive device, and the drive device is used for rescue operation. Since the semiconductor device in the inverter device is driven, even if noise occurs in the circuit during the stoppage of the rescue operation inverter device, the semiconductor device in the circuit will not be ignited and a short circuit accident will not occur. Thus, the reliability of the circuit operation can be improved.

According to the invention of claim 2, power is supplied from the emergency power supply in an emergency of the elevator, and the rescue operation inverter device for driving and controlling the induction motor for driving the elevator is started. Then, the second power supply for supplying DC power to the drive device is activated, and after confirming that the drive device is established, the main circuit switching means is turned on to supply DC power from the emergency power supply to the rescue operation inverter device. Is started, it is possible to prevent a short circuit accident between the DC main circuit voltages due to a malfunction of the semiconductor element in the rescue operation inverter device, and to improve the reliability of the circuit operation.

According to the third aspect of the present invention, the drive unit is operated by the commercial power supply by the butt power supply circuit in normal times by the butt power supply circuit of the commercial power supply and the emergency power supply. The rescue operation inverter device is actively held in a non-operation state, and the drive device is operated by an emergency power supply in an emergency, and the rescue operation inverter device is operated by the drive device. A short circuit between the DC main circuit voltages due to a malfunction of the semiconductor element in the driving inverter device can be prevented, and the reliability of the circuit operation can be improved.

According to the fourth aspect of the present invention, when the emergency rescue operation is completed, the opening and closing means of the main circuit for the emergency rescue operation is first opened, and after confirming the voltage drop of the smoothing capacitor, the second power supply is turned off. By stopping, the drive device is stopped, and the output of the drive signal from the drive device to the rescue operation inverter device is stopped.When the main circuit is opened to stop the rescue operation, the smoothing capacitor is used. The drive device is not stopped before the discharge is completed, and the occurrence of a short circuit accident due to erroneous firing of a semiconductor element in the inverter device during stop control of the rescue operation can be reliably prevented.

[Brief description of the drawings]

FIG. 1 is a circuit diagram according to a first embodiment of the present invention.

FIG. 2 is a circuit diagram according to a second embodiment of the present invention.

FIG. 3 is a flowchart of emergency rescue operation control according to the second embodiment.

FIG. 4 is a timing chart of emergency rescue operation control according to the second embodiment.

FIG. 5 is a circuit diagram according to a third embodiment of the present invention.

FIG. 6 is a circuit diagram according to a fourth embodiment of the present invention.

FIG. 7 is a flowchart of rescue operation stop control according to the fourth embodiment.

FIG. 8 is a circuit diagram of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main control device 2 Contactor 3 Contactor 4 Induction motor 5 Emergency power supply 6 Charger 7 Rescue operation control device 8 Drive device 9 Rescue operation inverter device 10 Contactor 11 DC / DC converter 12 Smoothing capacitor 13 Contactor 17 Main circuit closing contactor 20 Transformer 21 Rectifying diode 22 Contactor 23 Resistance 24 Backflow prevention diode 25 Butt power supply circuit a Control signal b Closing signal c Drive signal d Answerback signal e Closing signal f Closing signal g Voltage signal

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Michiyoshi Sonoda 1 Toshiba-cho, Fuchu-shi, Tokyo Toshiba Corporation Fuchu Plant

Claims (4)

[Claims] An emergency power supply; a rescue operation inverter device that receives power from the emergency power supply in an emergency of an elevator to drive and control an induction motor for driving the elevator; A second power supply that always outputs direct-current power regardless of time, and controls ignition of each semiconductor element in the rescue operation inverter device, and controls the semiconductor device during the stop period of the rescue operation inverter device. A rescue operation control device for an elevator, comprising: a drive device for applying a reverse bias voltage to an off side as a drive signal; and rescue operation control means for starting the elevator in an emergency and providing a control signal to the drive device. 2. An emergency power supply; a rescue operation inverter device that receives power supply from the emergency power supply in an emergency of an elevator and drives and controls an induction motor for driving an elevator; Opening / closing means interposed in a main circuit leading to the rescue operation inverter device; a drive device for controlling ignition of each semiconductor element in the rescue operation inverter device; A second power supply for supplying DC power to the elevator; activating the elevator in an emergency, activating the second power supply, supplying a control signal to the drive device, and confirming the activation of the drive device. A rescue operation control device for an elevator, comprising rescue operation control means for closing. 3. The rescue operation control device for an elevator according to claim 1, further comprising a power supply circuit for matching a commercial power supply and the emergency power supply in place of the second power supply. 4. An emergency power supply; a rescue operation inverter device that receives power from the emergency power supply during an emergency of the elevator and controls the drive of an induction motor for driving an elevator; Switching means interposed in the main circuit leading to the rescue operation inverter device, a smoothing capacitor for smoothing a DC input to the rescue operation inverter device, and setting the ignition of each semiconductor element in the rescue operation inverter device. A drive device to be controlled; a second power supply for supplying DC power to the drive device; an emergency start of the elevator to supply a control signal to the drive device and to close the opening / closing means; At the end of the rescue operation, the switching means is opened, and after confirming the voltage drop of the smoothing capacitor, the second power supply is stopped. A rescue operation control device for an elevator, comprising: rescue operation control means for stopping.