JPH11322208A - Elevator controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elevator controller which can minimize an influence of noise and has high reliability, in the controller provided with an inverter mounted at a distant position from a main controller 3. SOLUTION: A main controller 3 which prepares command signals for the speed control and torque control of an elevator is mounted inside a three-way frame 2A near the topmost floor hall door, and an inverter controller 4 which controls driving of the motor M of a hoist 9 based on a command signal from the main controller 3 is mounted on the top of a topmost floor hoistway. The main controller 3 and the inverter controller 4 are connected through a light transmission cable 12 to transmit the command signal with a light signal.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator control device having a control device installed on a three-way hoistway.

[0002]

2. Description of the Related Art Usually, an elevator control device is installed in a machine room. However, recently, the machine room in which the elevator control device is installed has been eliminated, and it has been often installed in an elevator along with electric equipment. That is, the construction cost is reduced by omitting the machine room, and such building construction is increasing.

In order to cope with such a building, it is considered that the elevator control device is installed in a three-way frame near the top floor holder. This is because the elevator control device is installed on the three-way frame so that the adjustment and maintenance work can be easily performed. That is, by removing the cover of the three-way frame, the work can be performed from the hall side, and the worker does not need to enter the hoistway, so that safety is ensured.

FIG. 14 shows a schematic configuration diagram of such an elevator. A call button 2 is installed in the hall 1, and a main control device 3 of the elevator control device is provided in the three-way frame 2A.
Is installed. An inverter device 6 is provided in the main control device 3, and the electric motor M that drives the hoist 9 is controlled by the inverter device 6.

The hoistway is formed by a hoistway steel frame 14,
The moving space for the car 7 and the counterweight 10 is secured, and a hoist 9 and a secondary sheave 8
Is provided. The car 7 is suspended by a rope 13 and connected to a counterweight 10 via a secondary sheave 8 and a main sheave of a hoisting machine 9. And basket 7
There is provided a tail code 15 for transmitting the information in the main control device 3. The hoist 9 is driven by a motor M, and the speed of the motor is detected by a pulse generator 16.

As described above, the main control device 3 of the elevator control device is installed on the three-way frame 2A of the hall, and the hoisting machine 9 including the electric motor M is installed on the uppermost floor of the hoistway steel frame 14. Has achieved less.

FIG. 15 is a block diagram of the main controller 3. The sequence control device 17 inputs signals such as a call button 2, a destination floor button in the car 7, a position indicator for displaying car traveling position information, and sends a speed command signal for controlling the operation of the elevator and moving the elevator. Output. The speed command signal from the sequence controller 17 is input to the torque controller 18.

The torque control device 18 generates a torque command signal (current command signal) for the motor M by adding the motor speed (car speed) and the car load from the pulse generator 16 to the speed designation signal. The torque command signal is a two-phase current command signal and is output to the inverter control device 4.

The inverter control device 4 includes a voltage control device 5
And the inverter device 6, the torque control device 1
The two-phase current command signal from 8 is input to the adder 24 of the voltage control device 5. The adder 24 calculates a deviation signal between the two-phase current command signal and the motor current detected by the current detector 32, and generates a deviation signal with a certain current response. The two-phase deviation signal obtained here is converted into three phases by the 2/3 phase converter 25, and is converted into a pulse train by the comparator 26 and the triangular wave generator 27. Then, the dead time creation device 28 and the dead time setting device 2
9 outputs a fixed six-phase dead-time pulse train in accordance with the set value. This pulse train is input to the gate drive device 30 of the inverter device 6,
The inverter 31 is driven by the gate drive device 30, and the electric motor M of the hoist 9 is driven. Here, the dead time of the upper and lower arms constituting the inverter 31 of the inverter device 6 is set in the dead time setting device 29.

As described above, all of the inverter control devices 4 including the sequence control device 9 and the inverter device 6 are housed in the main control device 3, and the motor M is driven by using the power line as the output of the main control device 3. Is supplied with AC power. Accordingly, a power line for driving the motor is laid from the main control device 3 to the motor M.

[0011]

However, in such a machine room-less elevator control apparatus, there is no particular problem when the capacity of the motor is small and all the parts can be accommodated in the three-way frame, but the capacity of the motor becomes large. As the application expands, the size of the inverter device 6 itself increases, and it becomes impossible to store all of the devices in the three-sided frame.

Further, in order to expand the application, it is conceivable that the inverter device 6 is extended outside the main control device 3 and installed near the hoisting machine 9. However, in such a case, the signal line to the inverter device 6 becomes longer. And become more susceptible to noise. That is, a malfunction may occur due to noise, and the reliability of the control device is reduced.

It is an object of the present invention to provide a highly reliable elevator control device in which the influence of noise is reduced when the inverter device is installed at a location remote from the main control device.

[0014]

An elevator control apparatus according to the first aspect of the present invention is installed in a three-way frame near a top floor holder and generates a command signal for speed control and torque control of the elevator. A device, an inverter control device provided on the top floor hoistway to drive and control the motor of the hoist based on a command signal from the main control device;
An optical transmission cable for connecting the main control device and the inverter control device and transmitting the command signal as an optical signal is provided.

In the elevator control device according to the first aspect of the present invention, a main control device for generating a command signal for speed control and torque control of the elevator is installed in a three-way frame near a top floor holder. An inverter control device for controlling the drive of the electric motor of the hoisting machine based on the command signal from is provided above the hoistway on the top floor. Then, the main control device and the inverter control device are connected by an optical transmission cable, and the command signal is transmitted by an optical signal.

An elevator control device according to a second aspect of the present invention is the elevator control device according to the first aspect,
The main control device, a sequence control device that creates an elevator speed command signal, and a torque control device that creates a current command signal for generating torque in the electric motor so that the speed of the elevator becomes the speed command signal Having an optical conversion device for converting the current command signal into an optical signal,
The inverter control device converts a light signal output from the main control device into a current command signal of an electric signal, and outputs a control command signal for the electric motor based on the current command signal; and An inverter device for driving the electric motor based on a control command signal of the device.

In the elevator control device according to the second aspect of the present invention, in addition to the operation of the elevator control device according to the first aspect, the sequence control device of the main control device generates an elevator speed command signal, and the torque control device performs A current command signal for generating a torque in the electric motor is generated so that the speed of the elevator becomes the speed command signal. Then, the current command signal is converted into an optical signal by the optical converter and transmitted. The voltage control device of the inverter control device converts the transmitted optical signal into a current command signal of an electric signal,
The control command signal for the motor is output based on the current command signal. The inverter device drives the electric motor based on a control command signal of the voltage control device.

An elevator control device according to a third aspect of the present invention is the elevator control device according to the second aspect,
A console for setting and changing a control constant of the voltage control device in the inverter control device; and an output of a current command signal from the torque control device is permitted when a speed command signal from the sequence control device is on and is blocked when the speed command signal is off. An electric motor control signal buffer, and a constant setting signal for permitting input of a control constant setting signal from the console when the speed command signal from the sequence control device is turned off and for changing the control constant of the voltage control device. And a buffer.

In the elevator control apparatus according to the third aspect of the present invention, in addition to the operation of the elevator control apparatus according to the second aspect, when the speed command signal from the sequence control apparatus is turned off, the control of the voltage control apparatus in the inverter control apparatus is performed. Change the constant from the console.

According to a fourth aspect of the present invention, there is provided the elevator control device according to the second or third aspect, wherein each of the three-phase motor currents supplied from the inverter device to the motor is detected. And a current measuring device provided in the main control device for inputting and monitoring the motor current of one of the three phases detected by the detector.

In the elevator control apparatus according to a fourth aspect of the present invention, in addition to the operation of the elevator control apparatus according to the second or third aspect, one of the three-phase motor currents supplied from the inverter to the motor is provided. The phase motor current is monitored with a current meter.

An elevator control device according to a fifth aspect of the present invention is the elevator control device according to the third aspect,
A protection detection device that detects an abnormality of the power supplied to the inverter device, a safety confirmation relay that outputs a brake suction command to a brake coil when the protection detection device does not detect a power abnormality, and a brake suction command. And a brake suction permission relay for permitting the output of the speed command signal from the sequence control device when is output.

In the elevator control device according to the fifth aspect of the present invention, in addition to the operation of the elevator control device according to the third aspect, only when the brake suction command is output,
The output of the speed command signal from the sequence control device is permitted.

An elevator control device according to a sixth aspect of the present invention is the elevator control device according to the fifth aspect,
A permanent stop protection detecting device for detecting a serious failure of the elevator, a reset operable protection detecting device for detecting an operable failure upon return, and only the rescue operation is enabled when the permanent stop protection detector operates, And a failure processing device that enables normal operation when the reset operation enabled protection detector operates and the fault is recovered.

In the elevator control device according to the invention of claim 6, in addition to the operation of the elevator control device according to claim 5, when the permanent stop protection detector for detecting a serious failure operates, only the rescue operation is enabled. On the other hand, when the reset operable protection detector for detecting a recoverable fault operates and the fault is recovered, normal operation is enabled.

An elevator control apparatus according to a seventh aspect of the present invention is the elevator control apparatus according to the second aspect,
A converter control unit for rectifying an AC power supply and supplying a DC power supply to the inverter device is provided in the inverter control device.

[0027] In the elevator control device according to the invention of claim 7, in addition to the operation of the elevator control device according to claim 2, DC power is supplied to the inverter device by a converter control unit in the inverter control device.

An elevator control device according to an eighth aspect of the present invention is the elevator control device according to the first aspect,
Instead of the optical transmission cable, the main control device and the inverter control device are connected by a cable, and the command signal is transmitted by an electric signal.

According to an eighth aspect of the present invention, instead of the operation of the elevator control device according to the first aspect, signal transmission between the main control device and the inverter control device is performed through an electric cable. Done at the signal.

An elevator control device according to a ninth aspect of the present invention is the elevator control device according to the second aspect,
The voltage control device of the inverter control device is provided in the main control device, and the voltage control device provided in the main control device and the inverter device in the inverter control device are connected by an optical transmission cable. It is characterized in that the command signal is transmitted as an optical signal.

In the elevator control device according to the ninth aspect of the present invention, in addition to the operation of the elevator control device according to the second aspect, a command signal to the inverter device is generated by the voltage control device provided in the main control device, The command signal is transmitted to the inverter device as an optical signal via an optical transmission cable.

An elevator control device according to a tenth aspect of the present invention is the elevator control device according to the ninth aspect, wherein the voltage control device of the main control device and the inverter control device are replaced by cables instead of the optical transmission cables. It is characterized in that it is connected to an inverter device and the command signal is transmitted by an electric signal.

In the elevator control device according to the tenth aspect, instead of the operation of the elevator control device according to the ninth aspect, signal transmission between the voltage control device of the main control device and the inverter device of the inverter control device. Is performed by an electric signal via a cable.

According to an eleventh aspect of the present invention, in the elevator control device according to the seventh aspect, the voltage control device of the converter control unit is provided in the main control device, and the voltage control device is provided in the main control device. The voltage control device and the converter device in the inverter control device are connected by an optical transmission cable and transmitted by an optical signal.

According to an eleventh aspect of the present invention, in addition to the operation of the elevator control device according to the seventh aspect, a command signal to the converter device is provided by a voltage control device of a converter control unit provided in the main control device. Is generated, and the command signal is transmitted to the converter device as an optical signal via an optical transmission cable.

According to a twelfth aspect of the present invention, in the elevator control device according to the eleventh aspect, a voltage control device of a converter control unit in the main control device is replaced by a cable instead of the optical transmission cable. It is characterized in that it is connected to a converter device in the inverter control device and is transmitted by an electric signal.

According to a twelfth aspect of the present invention, in place of the operation of the elevator control device according to the eleventh aspect, the voltage control device of the converter control unit in the main control device and the converter device in the inverter control device are used. Is transmitted by an electric signal via a cable.

An elevator control device according to a thirteenth aspect of the present invention is the elevator control device according to any one of the first to twelfth aspects.
The power supply device on the main control device side includes: an insulating transformer in which AC power is supplied to a primary winding;
And a switching regulator for generating a control power supply from the secondary winding. The power supply device on the side of the sequence control device is a DC / D converter in which DC power is supplied to the primary winding.
An isolation transformer for C, a DC / DC controller for controlling a power supply obtained from a primary winding of the DC / DC isolation transformer, and a power supply obtained from a secondary winding of the DC / DC isolation transformer And a power supply generating unit for generating a control power supply based on the control signal, and an output terminal of the switching regulator and an output terminal of the power supply generating unit are connected by a common line.

According to a thirteenth aspect of the present invention, in addition to the operation of the elevator control device according to any one of the first to twelfth aspects, the main control device is provided with insulation. The control power obtained by the switching regulator is supplied from the secondary winding of the transformer, and the sequence control device is controlled by the DC / DC control device and is obtained by the secondary winding of the DC / DC insulating transformer. The control power supplied from the power supply is obtained from the power supply.

[0040]

Embodiments of the present invention will be described below. FIG. 1 is a schematic configuration diagram in which an elevator control device according to an embodiment of the present invention is applied to an elevator.

In FIG. 1, the hoistway is formed by a hoistway steel frame 14, which secures a moving space for the car 7 and the counterweight 10, and above which a hoist 9 and a secondary sheave 8 are provided. Basket 7 is rope 13
And connected to the counterweight 10 via the secondary sheave 8 and the main sheave of the hoisting machine 9.
Further, a tail code 15 for transmitting information in the car 7 to the main control device 3 is provided. Also, the hoist 9
Is driven by a motor M, and the speed of the motor is detected by a pulse generator 16.

On the other hand, a call button 2 is installed in the hall 1, and the main control device 3 of the elevator control device is provided in the three-way frame 2A.
Is installed. That is, the main control device 3 that generates a command signal for controlling the speed and torque of the elevator is installed in the three-way frame 2A near the top floor holder. Then, an inverter control device 4 for driving and controlling the electric motor M of the hoisting machine 9 based on a command signal from the main control device 3.
Is provided above the hoistway on the top floor. The inverter control device 4 includes a voltage control device 5 and an inverter device 6, and the electric motor M that drives the hoisting machine 9 is controlled by the inverter device 6.

The main control unit 3 and the inverter control unit 4 are connected by an optical transmission cable 12, and a command signal from the main control unit 3 is converted into an optical signal via the optical transmission cable 12 by an optical signal. 4 is transmitted. Also,
The speed (car speed) of the electric motor M detected by the pulse generator 16 is returned to the main controller 3 via the shielded cable 11.

As described above, the main control device 3 for performing the sequence control and the torque control is housed in the three-way frame 2A, and the inverter control device 4 for performing the current-voltage control and the inverter control is provided for the hoisting machine 9 including the electric motor M. Install in the vicinity. Then, a command signal is transmitted as an optical signal between the main control device 3 and the inverter control device 4 through the optical transmission cable 12. Thereby, even when the inverter device 6 becomes large, the main control device 3 can be installed in a narrow space of the three-sided frame 2A, and the application of the elevator control device can be expanded while maintaining the machine room.

That is, since the size of the inverter device 6 increases when the application is expanded, it can be dealt with by increasing the shape of the inverter control device 4, and the main control device accommodated in the three-sided frame 2A is accommodated. 3 has no effect. Therefore, it can be extended to any application as an elevator without a machine room. In addition, since the transmission of the command signal for controlling the inverter is optically transmitted through the optical transmission cable 12, the influence of noise and the like can be completely ignored, the signal can be transmitted accurately and reliably, and the reliability as an elevator system is greatly improved. can do.

FIG. 2 is a configuration diagram of an elevator control device according to the first embodiment of the present invention. The first embodiment is different from the conventional elevator control device shown in FIG. 15 in that the main control device 3 and the inverter control device 4 are separated and the command signal is transmitted through the optical transmission cable 12. Accordingly, the main controller 3 includes an optical converter 21 for converting an electric signal to an optical signal, a triangular wave generator 20 for generating a triangular wave, an output of the torque controller 18 and a triangular wave generator 20.
And a comparator 19 for comparing the output signals of the above. Also, in the voltage control device 5 of the inverter control device 4, the optical conversion device 22 converts an optical signal into an electric signal.
And an F / V conversion device 23 that performs F / V conversion of the output of the light conversion device 22 and converts it into an analog command signal. Other configurations are the same as those shown in FIG. 15, and therefore, the same components are denoted by the same reference characters and description thereof will be omitted.

Next, the operation will be described. First, the main controller 3
, The two-phase current command signal output via the sequence control device 17 and the torque control device 18 is input to the comparator 19 together with the signal output from the triangular wave generator 20, and is output as a pulse train of the current command signal. Output. The electric signal of this pulse train is converted into an optical signal by the optical converter 21 and output to the inverter controller 4 as an optical signal.

In the inverter control device 4,
First, the current command signal output as an optical signal by the optical conversion device 22 of the voltage control device 5 is output again as a pulse train of an electric signal. The current command signal output from the optical converter 22 is input to the F / V converter 23 and output as an analog two-phase current command signal. Thereafter, the adder 24 adds the current command signal to the current detection signal of the electric motor M to create a command signal, and the 2 / 3-phase converter 25 converts the two-phase command signal into three.
Convert to phase.

The comparator 26 again compares the signal with the triangular wave signal, and drives the inverter 31 via the dead time creation device 28 and the gate drive device 30 with the pulse signal of the inverter control as a signal for six phases. Thus, the signal transmission from the main control device 3 to the inverter control device 4 takes 2
Since only the phase current command signal is used, the signal transmission cost can be significantly reduced.

Next, a second embodiment of the present invention will be described. FIG. 3 is a configuration diagram of an elevator control device according to a second embodiment of the present invention. The second embodiment is different from the first embodiment shown in FIG. 2 in that the control constant of the voltage control device 5 in the inverter control device 4 can be changed.

That is, the console 33 for setting and changing the control constant of the voltage control device 5 in the inverter control device 4 and the output of the current command signal from the torque control device 18 when the speed command signal from the sequence control device 17 is on. And a control signal buffer 34, 38 for blocking when the power supply is off, and a control constant setting signal from the console 33 when the speed command signal from the sequence control device 4 is off to allow the control constant of the voltage control device 5 to be changed. Constant setting signal buffers 35 and 39 for changing settings, an INV gate 36 for inverting the speed command signal output from the sequence controller 17 and controlling the constant setting signal buffers 35 and 39, and an INV gate 36 To control the motor control signal buffer 38 by inverting the output signal of
Gate 37 and current response adjuster 40 for adjusting current response
And a dead time adjuster 41 for adjusting the dead time time and dead time correction value of the upper and lower arms of the inverter 31 with respect to the dead time creation device 28. The other configuration is the same as that shown in FIG. 2, and therefore, the illustration of the same elements is partially omitted, and the same elements shown in the drawings are given the same reference numerals and description thereof is omitted.

In FIG. 3, the speed command signal output from the sequence control device 17 is input to a motor control signal buffer 34, and the motor control signal buffer 34 enters an operation mode when the speed command signal is input. . On the other hand, the speed command signal output from the sequence controller 17 is also input to the INV gate 36. The INV gate 36 inverts the speed command signal output from the sequence control device 17 and outputs the inverted signal to the constant setting signal buffer 35 and the INV gate 37.

The constant setting signal buffer 35 enters the operation mode when the output signal of the INV gate 36 is "1", and the control constant in the voltage control device 5 of the inverter control device 4 can be set.

The motor control signal buffer 38
When the output signal of the INV gate 37 is “1”, that is, when the speed command signal is being output, the operation mode is set.
The constant setting signal buffer 39 enters the operation mode when the output of the INV gate 36 is “1”, that is, when the control constant in the inverter control device 4 is set.

When the constant setting signal buffers 35 and 39 are in the operation mode, constant setting is performed from the console 33. Thereby, the current response adjuster 40 adjusts the current response, and the dead time adjuster 41 adjusts the dead time time and the dead time correction value of the inverter upper and lower arms.

Next, the operation will be described. Now, assuming that a speed command signal is output from the sequence control device 17 of the main control device 3, the motor control signal buffer 34 is checked and selected, and the operation mode is set. In this state, the torque control device 18 performs speed control and torque control, and the comparator 19 outputs a pulse train of the current command signal.
This signal is directly input to the optical conversion device 21 through the motor control signal buffer 34, and the current command signal is output as an optical signal. Then, in the current control device 5 of the inverter control device 4, the current command signal is input as an optical signal, and is converted into an electric signal by the optical conversion device 22.

On the other hand, in this state, since the motor control signal buffer 38 is checked and selected through the INV gates 36 and 37, the output of the optical converter 22 is output via the buffer 38 to the F / V converter 23, the adder 24, 2 /
The data is input to the inverter 6 via the three-phase converter 25, the comparator 26, and the dead time generator 28, and the motor M is driven.

On the other hand, when no speed command signal is output from the sequence control device 17 of the main control device 3, IN
The V gate 36 outputs a control signal, and the constant setting signal buffer 35 enters the operation mode. Actually, when setting a constant, a setting signal is also input in addition to the speed command signal. However, here, for simplicity, it is assumed that the constant setting signal buffer 35 enters the operation mode only with the speed command signal. In this state,
When a signal for setting a control constant in the inverter control device 4 is input from the outside via the console 33, the signal is input to the optical conversion device 21 through a constant setting signal buffer 35, and the optical conversion device 21 outputs a constant setting signal as an optical signal. Output.

On the other hand, in the voltage control device 5 of the inverter control device 4, the sequence control device 1 of the main control device 3
When the speed command signal from 7 is not output, that is, when the constant setting command signal is output, the constant setting buffer 39 enters the operation mode. At this time, a constant setting signal is input from the main control device 3 to the optical conversion device 22 as an optical signal.
0 or input to the dead time correction adjuster 41 to be changed to a new constant.

As described above, since the control constants in the inverter control device 4 can be changed from the main control device 3 side by using devices such as the console 33, the position of the inverter control device 4 installed in the hoistway can be changed. Adjustment work can be done only on the hall side without having to go to the hall. That is, the labor of the worker can be saved, and efficient work can be performed.

Next, a third embodiment of the present invention will be described. FIG. 4 is a configuration diagram of an elevator control device according to a third embodiment of the present invention. This third embodiment is different from the first embodiment shown in FIG. 2 in that current detectors 32U, 32V, and 32W respectively detect three-phase motor currents supplied to the motor M from the inverter device 4. When,
The current detectors 32U, 32V, 3
It has a check pin 44 for connecting a current measuring device S for inputting and monitoring a motor current of one of three phases detected at 2 W. The other configuration is the same as that shown in FIG. 2, and therefore, the illustration of the same elements is partially omitted, and the same elements shown in the drawings are given the same reference numerals and description thereof is omitted.

In FIG. 4, in main control device 3,
A check pin 44 (V phase in the figure) for connecting the current measuring device S to the current detection signal input from the inverter control device 4 through the filter resistor 42 and the filter capacitor 43 is added. In inverter control device 4, U-phase adder 24U for adding the two-phase current command signal output from F / V converter 23 to the output signal of U-phase current detector 32U, and W-phase current detector 32W It has a W-phase adder 24W for adding the detection signal and a V-phase current detector 32V unrelated to the current control.

In this configuration, U-phase current detector 32U
And the output signals of the W-phase current detector 32W are input to the U-phase adder 24U and the W-phase adder 24W, respectively, and used as current control signals. 3 and output the value to a check pin 44 via a filter resistor 42 and a filter capacitor 43, so that the main controller 3 can measure the current or waveform to the electric motor M. As a result, a current signal that is important as the inverter control device 4 can be easily measured on the main control device 3 side, and work such as adjustment can be simplified by eliminating work on the hoistway.

Next, a fourth embodiment of the present invention will be described. FIG. 5 is a configuration diagram of an elevator control device according to a fourth embodiment of the present invention. The fourth embodiment is different from the second embodiment shown in FIG. 3 in that the speed command signal from the sequence control device 17 of the main control device 3 is output when the brake suction permission signal is output. Only output is possible.

In FIG. 5, a protection detection device 45 for detecting an abnormality of the power supplied to the inverter device 4 and a speed command signal from the main control device 3 and an output of the protection detection device 45 are provided in the inverter control device 4. AND gate 46, which sets the inverter gate to the operation mode when indicates a normal state, a transistor driver 47 which is turned on when the protection detection device 45 has not detected a power supply abnormality, and a transistor driver 47 which is turned on when the transistor driver 47 is on It operates and closes the contact 48a to send the brake suction command to the brake coil 52.
And a safety confirmation relay 48 for outputting the speed command signal from the sequence control device 17 in the main control device 3 when the brake suction command is output and closing the contact 50a. A brake suction permission relay 50, a brake resistor 49 for limiting a brake current when the brake is released, and a main contact 51 of a closed brake suction contactor for outputting a speed command signal from the sequence control device 17 are provided. I have. The other configuration is the same as that shown in FIG. 2, and therefore, the illustration of the same elements is partially omitted, and the same elements shown in the drawings are given the same reference numerals and description thereof is omitted.

The protection detecting device 45 operates when an overcurrent or a power loss occurs. When a normal state is indicated, a signal “1” is output, and when an abnormality is detected, a signal “0” is output. The AND gate 46 puts the gate drive device 30 into an operation mode when the speed command signal from the main control device 3 and the output of the protection detection device 45 indicate a normal state.

The transistor driver 47 is turned on when the output of the protection detector 45 indicates a normal state, and excites the safety confirmation relay 48. The contact 48a is closed by the operation of the safety confirmation relay 48.
That is, the contact 48 a is closed in the normal state, and the brake power is supplied to the brake coil 52 via the brake resistor 49. In this case, the brake resistor 49 limits the brake current when the brake is released. Main contact 5
Reference numeral 1 denotes a contact point of the brake suction contactor that is released when the brake release command is output.

The brake suction permission detecting relay 50 is energized when the safety confirmation relay 48 is energized when the power supply in the inverter control device 4 is normal, and its contact 50
a is closed to inform the sequence controller 17 that brake suction is permitted. That is, the brake coil 52 sucks the brake shoes when the current flows to open the elevator, and releases the brake main when the current is interrupted to apply a brake to the elevator.

Next, the operation will be described. Assuming that there is no abnormality in the inverter control device 4 and the protection detection device 45 is in a normal state, the transistor driver 47 is turned on, and the safety confirmation relay 48 is excited. Thereby, the contact 48a is closed, and the brake power from the main control device 3 can be supplied. At the same time, on the main controller 3 side, the brake suction permission detection relay 50 is excited, and a signal from the contact 50a is input to the sequence controller 17 to confirm that the sequence controller 17 is in an operable state. I do.

Contact 50a of brake suction permission relay 50
Is closed, and when the operable state is confirmed, a speed command signal is output from the sequence controller 17 and the INV gate 3
The signal is input to the AND gate 46 via the gates 6 and 37. When the protection detector 45 detects a normal state,
The gate drive device 30 is set in the operation mode from the output of the AND gate 46, and the inverter can be controlled. When a speed command signal is output from the sequence controller 4 in this state, the brake suction contactor 51 is closed, the brake is released, and the elevator starts moving.

On the other hand, when some protection is activated on the inverter control device 4 side during the operation of the elevator and the protection detection device 45 detects an abnormality, the gate drive device 30 is first shut down by the output of the AND gate 46, and the inverter device 6 is turned off.
The control of is stopped. Also, the transistor driver 47
Is turned off, the safety confirmation relay 48 is turned off, and the contact 48a is opened to shut off the brake power. This immediately releases the brake and stops the elevator.

When the contact 48a is opened, the brake suction permission detection relay 50 is turned off. When the contact 50a is opened, the sequence controller 17 detects an abnormality of the inverter controller 4 and outputs a speed command signal. The contactor contact 51 for stop and brake suction is opened.

As described above, even when the main control device 3 and the inverter control device 4 are located at a distance from each other and the signal transmission / reception cannot be performed immediately, the motor current caused by the inverter stop only by the protection detection signal in the inverter control device 4 can be obtained. The elevator is stopped by breaking the brake and releasing the brake by breaking the brake circuit, and thereafter, the abnormality is transmitted to the main control unit 3 to stop the entire elevator system. Therefore, safety can be ensured, and the equipment such as the inverter device 6 can be prevented from being damaged.

Next, a fifth embodiment of the present invention will be described. FIG. 6 is a configuration diagram of an elevator control device according to a fifth embodiment of the present invention. This fifth embodiment is different from the fourth embodiment shown in FIG. 5 in that when a serious failure occurs in the elevator, only rescue operation is possible,
When a reset operation is possible, normal operation is enabled when the failure is recovered.

In FIG. 6, a permanent stop protection detecting device 54 for detecting a serious failure of an elevator, and a reset operable protection detecting device 55 for detecting a operable failure upon recovery.
And a failure processing device D that enables only the rescue operation when the permanent stop protection detector 54 operates, and enables the normal operation when the reset operation enabled protection detector 55 operates and the fault is recovered. I have. The other configuration is the same as that shown in FIG. 5, so that the illustration of the same elements is partially omitted, and the same elements shown in the figures are given the same reference numerals and description thereof is omitted.

The permanent stop protection detecting device 54 detects an abnormality when a serious failure such as an overcurrent occurs, while the reset operable protection detecting device 55 becomes operable again when the abnormality such as a power loss is restored. Detect abnormalities. When the permanent stop protection detection device 54 or the reset operation possible protection detection device 55 detects an abnormality, the abnormality is stored in the memory device 53, and a speed command signal from the sequence control device 17 is input through the INV gate 37. Reset when done.

The failure processing device D includes a first latch circuit 56 for latching an abnormal signal of the permanent stop protection detection device 54,
A counter 58 that counts the number of outputs of the first latch circuit 56; an OR gate 59 that outputs a signal when the counter 58 outputs an abnormality two or more times; The second latch circuit 57, a memory device 53 for storing an abnormal signal detected by the permanent stop protection detection device 54 and the reset operable protection detection device 55, and an AND circuit 60.

The AND circuit 60 is connected to the sequence controller 1
7 outputs a speed command signal.
Is detected only once or less than one time, and is not in the permanent stop state, the first latch circuit 56 is cleared, and the second latch circuit 57 does not detect any abnormality. "1" is output. Thereby, the transistor 47 and the gate drive device 30 are set to the operation mode. The memory device 53, the first latch circuit 56, and the second latch circuit 57 are reset when a speed command signal from the sequence control device 17 is input via the INV gate 37.

Next, the operation will be described. If the inverter control device 4 is normal and does not output an abnormal signal, the inverter can be controlled by receiving the output of the speed command signal obtained via the INV gate 37 as described above.

When the permanent stop protection detecting device 54 outputs an abnormal signal due to an overcurrent, the memory device 53 stores the abnormality and outputs an abnormal state by the first latch circuit 56. That is, the output of the AND circuit 60 becomes “0”, thereby turning off the gate output of the AND circuit 60, stopping the inverter device 6, and stopping the elevator by releasing the brake. Thereby, as described with reference to FIG. 5, the speed command signal from main controller 3 is turned off, and first latch circuit 56 is temporarily released to clear the abnormal state.

At this time, one abnormal signal remains in the counter 58. After the reset due to the turning off of the speed command signal, the speed command signal is output again and the rescue operation is started. However, if an abnormality such as the output of the permanent stop protection detector 54 occurs again during the operation, the elevator is similarly operated. At the same time, the counter 58 receives an abnormal signal twice, so that the OR gate 59 outputs a permanent stop abnormal signal.
After that, the elevator cannot be reset.

When the speed command signal is turned off also when the re-leveling is completed by the rescue operation, and then the speed command signal is output in an attempt to operate again, the memory device 53 issues a permanent failure abnormality signal. Then, the abnormality signal is input to the counter 58 twice through the first latch circuit 56, so that the reset operation after the re-level operation is disabled.

On the other hand, when an abnormality such as a power loss occurs and the reset operable protection detection device 55 outputs an abnormality,
Although the elevator operation is temporarily disabled through the second latch circuit 57, when the abnormal state is released, the elevator is reset again by the re-input of the speed command signal and the elevator operation becomes possible.

In the fifth embodiment, only one re-level rescue operation is permitted when a serious failure is detected. Also,
When the resettable protection is detected, if the protection detection signal is cleared, the protection can be reset and the elevator operation service can be resumed.

Next, a sixth embodiment of the present invention will be described. FIG. 7 is a configuration diagram of an elevator control device according to a sixth embodiment of the present invention. This sixth embodiment is different from the second embodiment shown in FIG. 3 in that a converter control unit that rectifies a three-phase AC power supply 61 and supplies DC power to the inverter device 6 is provided in the inverter control device 4. C is provided.

In FIG. 7, a converter control section C performs a control AC reactor 62 for inputting a three-phase AC from a three-phase AC power supply 61, and performs voltage boost control, power regeneration control, and constant DC voltage control. Converter 63, smoothing capacitor 64 for smoothing the DC voltage, DC voltage detector 65 for detecting the DC voltage, power supply current detector 66 for detecting the power supply current, and synchronizing the voltage phases of three-phase AC power supply 61. A DC voltage setting device 74 for setting constants such as a DC current command value and a DC voltage response by a PLL control device 67, a constant setting signal buffer 39, a detection signal of a DC voltage detector 65, and a constant of the DC voltage setting device 74. Voltage control device 68 for controlling the DC voltage according to the power supply current command signal output from the DC voltage control device 68 and the power supply current detector 66
An adder 69 for adding the actual power supply current detection signal detected by the control signal and a setting signal output by the current response adjuster 40 for setting a power supply current response constant; and a two-phase current command signal output from the adder 69. To a three-phase converter, a comparator 71 for comparing an output signal of the 2 / 3-phase converter 70 with a triangular wave signal output from the triangular generator 72,
Dead time creation device 73 that converts a DC voltage command pulse signal from comparator 71 into a six-phase signal and outputs a converter signal corrected by dead time correction adjuster 41
And a gate drive device 75 that amplifies the current of the six-phase gate drive signal output from the dead time creation device 73 and outputs the amplified signal to the converter 63. The other configuration is the same as that shown in FIG. 2, and therefore, the illustration of the same elements is partially omitted, and the same elements shown in the drawings are given the same reference numerals and description thereof is omitted.

The operation of the converter control section C is almost the same as the operation of the voltage control device 5 and the inverter device 6 in the third embodiment shown in FIG. 3, except that an alternating current is converted to a direct current. I have.

In the sixth embodiment, since all the controls related to the converter control are performed in the inverter control device 4 and only the constant setting is set by the main control device 3, the main control device 3 and the inverter Control device 4
The transmission and reception of a signal for controlling the converter is not required between the transmission and the reception, thereby simplifying the transmission and reducing the cost.

Next, a seventh embodiment of the present invention will be described. FIG. 8 is a configuration diagram of an elevator control device according to a seventh embodiment of the present invention. The seventh embodiment differs from the first embodiment shown in FIG. 2 in that the transmission of the current command signal between the main control device 3 and the inverter control device 4 sends a pulse train as an electric signal, Further, a shielded cable 76 is used as a signal line.

The main controller 3 outputs a pulse train of the current command signal as an electric signal, and the inverter controller 4 uses the F / V converter 23 to output the main controller 3.
Is converted into an analog two-phase current command signal, and the same operation as the voltage control device 5 and the inverter device 6 shown in FIG. As a result, cost increases due to optical transmission can be suppressed and transmission costs can be significantly reduced.

Next, an eighth embodiment of the present invention will be described. FIG. 9 is a configuration diagram of an elevator control device according to an eighth embodiment of the present invention. This eighth embodiment is different from the first embodiment shown in FIG. 2 in that a voltage control device 5 of an inverter control device 4 is provided in a main control device 3,
A voltage control device 5 provided in the main control device 3 and an inverter device 6 in the inverter control device 4 are connected by an optical transmission cable 12 so that a command signal from the main control device 3 is transmitted as an optical signal. It was done.

In FIG. 9, the voltage control device 5 is provided in the main control device 3. The voltage control device 5 of the main control device 3 converts the pulse train signal input from the inverter control device 4 into an analog signal by F / V change.
A / V conversion device 77 is added. Also, the inverter control device 4 outputs the motor current detection signal to the triangular wave generator 7.
A comparator 78 and a protection / detection device 81 for converting into a pulse train by the triangular wave signal of 9 are additionally provided.

Next, the operation will be described. In main controller 3, adder 24 adds a current command signal from sequence controller 17 and torque controller 18 and a motor current detection signal output from F / V converter 77, and the signal is added to 2/3. The phase is converted into three phases by the phase converter 25,
In 6, the pulse signal of the inverter control is compared with the triangular wave signal as a signal for six phases, taking into account the dead time in the dead time creation device 28, and the signal is optically converted in the optical conversion device 21 to the optical transmission cable 21. Send. That is, the six-phase output signals of the dead time creation device 28 are output to the optical transmission cable 21 from the individual six-phase optical conversion devices 21.

The inverter controller 4 converts the six-phase optical signal into an electric signal by the optical converter 22, obtains a gate drive signal by the gate drive device 30, and drives the inverter 31. The motor current detection signal detected by the current detector 32 in the inverter control device 4 is output as a pulse train by the comparator 78 and transmitted as an electric signal through the shielded cable 80.

As a result, the optical transmission cable 12 requires six phases, which increases the cost. However, a series of processes from the sequence control to the creation of the dead time can be performed in the same main controller 3, and the controller It can be easily made compact and software-processed.

Next, a ninth embodiment of the present invention will be described. FIG. 10 is a configuration diagram of an elevator control device according to a ninth embodiment of the present invention. This ninth embodiment is different from the eighth embodiment shown in FIG. 9 in that the transmission of the gate pulse signal between the main control device and the inverter control device transmits the pulse signal as an electric signal, The transmission of the current detection signal is also sent as an electric signal, and the shielded cable 82 is used as a signal line. As a result, cost increases due to optical transmission are suppressed, and transmission costs are greatly reduced.

Next, a tenth embodiment of the present invention will be described. FIG. 11 is a configuration diagram of an elevator control device according to a tenth embodiment of the present invention. The tenth embodiment is an elevator control device having the converter control unit C according to the sixth embodiment shown in FIG. 7 in the sequence control device 4, in which the voltage control device 5C of the converter control unit C The voltage control device 5 of the inverter control device 4 is provided in the main control device 3 and provided between the voltage control device 5C provided in the main control device 3 and the converter device 6C in the inverter control device 4 and in the main control device 3. The voltage control device 5 and the inverter device 6 in the inverter control device 4 are connected by an optical transmission cable 12 and transmitted by an optical signal.

The main controller 3 converts the pulse train of the power supply current and the DC voltage output from the inverter controller 4 via the shielded cable 80 into an F / V signal.
Conversion devices 85 and 86 are added, and comparators 87 and 88 for outputting detection signals of the power supply current and the DC voltage as a pulse train by a triangular wave signal on the side of the inverter device 4 are added. Other configurations are the same as those shown in FIG. 7 or FIG. 9, and therefore, the illustration of the same elements is partially omitted, and the same elements shown in the drawings are given the same reference numerals and description thereof is omitted.

According to the tenth embodiment, the number of circuits for optical transmission increases and the cost increases. However, main control (sequence control, torque control,
Voltage control), the control device can be easily made compact and software.

Next, an eleventh embodiment of the present invention will be described. FIG. 12 is a configuration diagram of an elevator control device according to an eleventh embodiment of the present invention. This eleventh embodiment is different from the tenth embodiment shown in FIG.
Instead of the optical transmission cable 12, a cable 82 is used to control the voltage controller 5C of the converter controller C in the main controller 3.
And a converter device 6C in the inverter control device 4 for transmission by electric signals.

That is, transmission of the gate pulse signals for inverter control and converter control between the main control device 3 and the inverter control device 4 sends pulse signals as electric signals. The transmission of the motor current detection signal is also transmitted as an electric signal, and the shielded cable 82 is used as a signal line. As a result, cost increases due to optical transmission are suppressed, and transmission costs are greatly reduced.

Next, a twelfth embodiment of the present invention will be described. FIG. 13 is a configuration diagram of an elevator control device according to a twelfth embodiment of the present invention. The twelfth embodiment is different from the first to eleventh embodiments in that the main control device 3 uses a general switching regulator 90 or 91 to control the control power from the three-phase AC power supply 61. On the inverter controller 4 side, the control power is generated by the power generation unit B from a part of the secondary winding of the DC / DC insulating transformer 95 that generates the gate power. The reference potential of the main control device 3 and the reference voltage of the inverter control device 4 are connected to reduce the cost of the power supply device on the inverter control device 4 side.

In FIG. 13, the sequence control device 17, the torque control device 18, the voltage control devices 5, 5C, etc. installed in the main control device 3 are collectively referred to as the overall control device 92.
Similarly, the power control devices 5 and 5C or the inverter device 6 and the converter device 6C installed in the sequence control device 4 are collectively shown as an overall control device 98.

The power supply unit on the main control unit 3 side includes an insulating transformer 89 in which the three-phase AC power supply 61 is supplied to the primary winding.
And switching regulators 90 and 91 for creating a control power supply from the secondary winding of the insulating transformer 89. Then, control power is supplied to the overall control device 92.

On the other hand, the power supply device on the side of the sequence controller 4 includes a rectifier 93 for rectifying the three-phase AC from the three-phase AC power supply 61 and a smoothing capacitor 94 for smoothing the DC obtained by the rectifier 93. A DC / DC insulating transformer 95 to which DC power from the rectifier 93 and the smoothing capacitor 94 is supplied to the primary winding 95-1;
A DC / DC control device 97 for controlling a DC current flowing through the primary winding 95-1 based on a voltage of a secondary winding 95-2 of the insulating transformer 95 for C; And a power supply generator B for generating a control power supply based on the power supplies obtained from the secondary windings 95-3 and 95-4. Then, the control power is supplied from the power generation unit B to the overall control device 98.

Here, the power generation unit B includes the control power supply rectifiers 101 and 102 and the smoothing capacitors 99 and 100.
It is composed of Further, the output terminals of the switching regulators 90 and 91 and the output terminal of the power generation unit B are connected by a common line 103. Gate signals to the gate drive devices 30 and 75 are output from the secondary windings 95-5 to 95-N of the DC / DC insulating transformer 95.

The operation will be described. On the main control device 3 side, stable DC power is supplied to the overall control device 92 by general switching regulators 90 and 91. On the inverter controller 4 side, the DC / DC isolation transformer 95-2
A DC power supply serving as a control power supply is created by the next windings 95-3 and 95-4 and supplied to the overall control device 98.

Further, since the DC control power supplies of the general control devices 92 and 98 are both generated by the secondary sides of the insulation transformers 89 and 95, they are floating power supplies on the circuit. Therefore, the reference potentials of the switching regulators 90 and 91 and the reference potential of the control power supply in the inverter control device 4 are connected to each other, and the overall control devices 92 and 98 stabilize the power supply potential.

As a result, the control power supply in the inverter control device 4 can be created together with the gate power supply by DC / DC control, so that it is not necessary to provide the switch regulator itself, and the cost of the power supply device can be reduced. Can be.

[0110]

As described above, according to the present invention, the main control device whose external dimensions are not affected by the size of the motor is separated from the inverter device whose external size is increased by the size of the motor. However, since the main control device is housed in a three-way frame and the inverter control device including the inverter device is installed near the hoisting machine, even if the inverter device becomes large, the machine room can be properly eliminated.

Further, since signal transmission between the main control device and the inverter control device is transmitted as an optical transmission or an electric signal of a pulse train, malfunction due to noise can be prevented.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an elevator when an elevator control device according to an embodiment of the present invention is applied to an elevator.

FIG. 2 is a configuration diagram of an elevator control device according to the first embodiment of the present invention.

FIG. 3 is a configuration diagram of an elevator control device according to a second embodiment of the present invention.

FIG. 4 is a configuration diagram of an elevator control device according to a third embodiment of the present invention.

FIG. 5 is a configuration diagram of an elevator control device according to a fourth embodiment of the present invention.

FIG. 6 is a configuration diagram of an elevator control device according to a fifth embodiment of the present invention.

FIG. 7 is a configuration diagram of an elevator control device according to a sixth embodiment of the present invention.

FIG. 8 is a configuration diagram of an elevator control device according to a seventh embodiment of the present invention.

FIG. 9 is a configuration diagram of an elevator control device according to an eighth embodiment of the present invention.

FIG. 10 is a configuration diagram of an elevator control device according to a ninth embodiment of the present invention.

FIG. 11 is a configuration diagram of an elevator control device according to a tenth embodiment of the present invention.

FIG. 12 is a configuration diagram of an elevator control device according to an eleventh embodiment of the present invention.

FIG. 13 is a configuration diagram of an elevator control device according to a twelfth embodiment of the present invention.

FIG. 14 is a schematic configuration diagram of an elevator in which an elevator control device is housed in a three-way frame.

FIG. 15 is a block diagram of a conventional elevator control device.

[Explanation of symbols]

 Reference Signs List 1 hall 2 call button 2A three-way frame 3 main control device 4 inverter control device 5 voltage control device 6 inverter device 7 car 8 secondary sheave 9 hoisting machine 10 counter weight 12 optical cable 13 rope 14 hoistway steel frame 15 tail code 16 pulse generator 17 Sequence controller 18 Torque controller

Claims (13)

[Claims] 1. A main control device installed in a three-way frame near a top floor holder to generate a command signal for speed control and torque control of an elevator, and the main control device provided above a top floor hoistway An inverter control device that drives and controls the electric motor of the hoist based on a command signal from an optical transmission cable for connecting the main control device and the inverter control device and transmitting the command signal as an optical signal An elevator control device comprising: 2. The elevator control device according to claim 1, wherein the main control device includes a sequence control device for generating a speed command signal for the elevator, and the electric motor so that the speed of the elevator becomes the speed command signal. A torque control device that generates a current command signal for generating torque, and an optical conversion device that converts the current command signal into an optical signal, wherein the inverter control device includes a light output from the main control device. A voltage control device that converts a signal into a current command signal of an electric signal and outputs a control command signal for the electric motor based on the current command signal, and for driving the motor based on a control command signal of the voltage control device. An elevator control device comprising an inverter device. 3. The elevator control device according to claim 2, wherein a console for setting and changing a control constant of the voltage control device in the inverter control device and the speed command signal from the sequence control device are turned on. A motor control signal buffer for permitting the output of the current command signal from the torque control device and blocking it when off, and permitting the input of a control constant setting signal from the console when the speed command signal from the sequence control device is off. An elevator control device, comprising: a constant setting signal buffer for setting and changing a control constant of the voltage control device. 4. The elevator control device according to claim 2, wherein a current detector for detecting a three-phase motor current supplied from the inverter device to the motor is provided in the main control device. And a current measuring device for inputting and monitoring the motor current of one of the three phases detected by the detector. 5. The elevator control device according to claim 3, wherein a protection detection device detects an abnormality of a power supply supplied to the inverter device, and brake suction when the protection detection device does not detect a power supply abnormality. An elevator, comprising: a safety confirmation relay for outputting a command to a brake coil; and a brake suction permission relay for permitting output of a speed command signal from a sequence control device when the brake suction command is output. Control device. 6. The elevator control device according to claim 5, wherein the permanent stop protection detection device detects a serious failure of the elevator, the reset operation possible protection detection device detects a failure that can be operated when the elevator is restored, and the permanent control device. An elevator, comprising: a failure processing device that enables only rescue operation when the stop protection detector operates and enables normal operation when the reset operation enabled protection detector operates and recovers from the failure. Control device. 7. The elevator control device according to claim 2, wherein a converter control unit for rectifying an AC power supply and supplying a DC power supply to the inverter device is provided in the inverter control device. apparatus. 8. The elevator control device according to claim 1, wherein the main control device and the inverter control device are connected by a cable instead of the optical transmission cable,
An elevator control device wherein the command signal is transmitted by an electric signal. 9. The elevator control device according to claim 2, wherein the voltage control device of the inverter control device is provided in the main control device, and the voltage control device and the inverter control device provided in the main control device are provided. An elevator control device, wherein the command signal is transmitted as an optical signal by connecting an optical transmission cable between the inverter control device and the inverter device. 10. The elevator control device according to claim 9, wherein a cable is connected between the voltage control device of the main control device and the inverter device of the inverter control device by a cable instead of the optical transmission cable. An elevator control device, wherein the command signal is transmitted by a signal. 11. The elevator control device according to claim 7, wherein a voltage control device of the converter control unit is provided in the main control device, and the voltage control device provided in the main control device and the inverter control device are provided. The elevator control device is connected to the converter device by an optical transmission cable and transmitted by an optical signal. 12. The elevator control device according to claim 11, wherein a cable is used instead of the optical transmission cable to connect a voltage control device of a converter control unit in the main control device and a converter device in the inverter control device. An elevator control device, characterized in that a connection is made between them and transmission is made by an electric signal. 13. The elevator control device according to claim 1, wherein the power supply device on the main control device side supplies AC power to a primary winding. And a switching regulator that creates a control power supply from the secondary winding of the insulating transformer. The power supply device on the side of the sequence control device is supplied with DC power to the primary winding. DC / DC insulating transformer, and a DC / D controlling a power supply obtained in a primary winding of the DC / DC insulating transformer.
A control power supply unit for generating a control power supply based on a power supply obtained from the secondary winding of the DC / DC isolation transformer, wherein the output terminal of the switching regulator and the power supply generation unit An elevator control device, wherein an output end is connected by a common line.