JPH08214564A - Operating apparatus for inverter device - Google Patents

Abstract

PURPOSE: To improve the using convenience of an operating apparatus for inverter devices, by eliminating complicated wirings such as cables for operating the inverter device. CONSTITUTION: An inverter device 11 performs current applications from a three-phase AC power supply 13 to an induction motor 12. The inverter device 11 is provided with a main circuit 14, an inverter controlling circuit 15, a receiving circuit 17 for receiving infrared-ray signal and the like. A remote controller 18 generates controlling signals by a remote-controller controlling part 19 and transmits them as the infrared-ray signals by a transmitting circuit 22. Thereby, the configuration of an operating apparatus for inverter devices can be made simple without any cable being laid between the remote controller 18 and the inverter device 11, and its using convenience can be made excellent too, and further, wrong effects due to noises superimposed on cables and the like can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operating device for an inverter device for operating an inverter device provided with a motor capable of variable speed operation.

[0002]

2. Description of the Related Art There is an inverter device as a device for controlling a variable speed operation of an electric motor, and this inverter device is generally constructed as shown in FIG. That is, the inverter device 1 includes a main circuit section 2 in which switching elements such as power transistors are bridge-connected, an inverter control section 3 including a microcomputer and a storage element, an input section 4 including a switch, and an LED. The display unit 5 is provided with a display element such as an LCD or an LCD. Thereby, for example, the induction motor 6 is configured to be driven and controlled by performing PWM energization or the like corresponding to a predetermined frequency from the three-phase AC power source 7 via the inverter device 1.

Further, an operation signal can be given to the inverter control unit 3 of the inverter device 1 from an external input unit 4a provided outside via a cable 1a. Further, drive control of the induction motor 6 can be performed by giving an operation signal from the personal computer 8 to the inverter control section 3 via the cable 1b. In this case, the personal computer 8 can give an operation signal by transmitting a serial signal using the terminal of RS232C.

[0004]

However, in the conventional configuration as described above, either the external input unit 4a or the personal computer 8 is used as the configuration for applying the operation signal from the position away from the inverter device 1. Even in the case, since it is necessary to perform the operation with the cable 1a or the cable 1b connected, the connection work becomes complicated, and the arrangement position of the external input unit 4a or the personal computer 8 is restricted, which is easy to use. There is a problem that the degree of freedom is low.

Further, by arranging the cables 1a and 1b in this way, it becomes easy to be adversely affected by noise from the outside, and as the length of the cables 1a and 1b becomes longer, it becomes necessary to surely take noise countermeasures. Therefore, there is a problem that the cost becomes high.

The present invention has been made in view of the above circumstances. An object of the present invention is to operate an inverter device by eliminating troublesome wiring such as a cable for operating the inverter device and improving usability. To provide a device.

[0007]

SUMMARY OF THE INVENTION The present invention is directed to an operating device for an inverter device for operating an inverter device provided with an electric motor capable of variable speed operation. An operating signal for the inverter device is an infrared signal. And a control means for receiving a control signal from the remote control means in the inverter device and applying a drive control signal to the electric motor based on the received content. It has (the invention of claim 1).

Further, the remote control means may be configured to include a storage means for storing device parameters for drive control of the inverter device (the invention of claim 2).

Further, the remote control means is configured to transmit an identification code for identifying the inverter device together with the operation signal, and the control means collates the identification code included in the received signal. Equipped with means,
It is preferable to provide a drive control signal to the electric motor when a matching signal is output from the matching means (the invention of claim 3). Further, the remote operation means may be configured to have a battery, which is rechargeable by an external power supply, as a power supply (the invention of claim 4).

[0010]

According to the operating device for an inverter device of the present invention, when an operation signal for the inverter device is output by the remote operation means, the operation signal is transmitted as an infrared signal, and the control means is When the light is received, the drive of the electric motor is controlled based on the received content. In this case, since the remote operation means does not need to dispose a cable between the remote operation means and the control means, the degree of freedom is increased and the usability is improved, and the adverse effect due to the mixing of the external noise is prevented as much as possible. can do.

According to the second aspect of the operating device for the inverter device, since the remote operating means stores the device parameter for controlling the drive of the inverter device in the storing means, only a simple operation is performed at the time of operation. With, it is possible to transmit an operation signal corresponding to the actual operation content.

According to the operating device for the inverter device of the third aspect, when the remote operation means is operated, the identification code of the inverter device is transmitted together with the operation signal, while the control means receives the identification code. When the identification code included in the signal coincides with the one set for itself, the inverter device is driven and controlled according to the coincidence signal output from the collating means so as to correspond to the operation signal at that time. As a result, it is possible to prevent other inverter devices from being erroneously driven, and it becomes possible to individually control the driving by transmitting operation signals even when a large number of inverter devices are simultaneously operated.

According to the operating device for the inverter device of the fourth aspect, since the rechargeable battery is mounted on the remote control means, the charging state is set to be chargeable by, for example, a charger when not in use. By so doing, it becomes possible to reliably transmit the operation signal in a state where the power supply is always secured.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIG.
Will be described with reference to. FIG. 1 shows an overall block configuration. The inverter device 11 includes an induction motor 12
On the other hand, the energization control is performed from the three-phase AC power supply 13 as described later. In this inverter device 11,
A main circuit unit 14 for rectifying and smoothing the three-phase AC from the three-phase AC power supply 13 and controlling ON / OFF of a switching element in which the DC power supply is bridge-connected to perform PWM energization of the induction motor 12 at a predetermined frequency. It is provided. The inverter control circuit 15 is a circuit for giving a PWM signal to each switching element of the main circuit unit 14 and is composed of a microcomputer, a ROM, a RAM, etc., and generates a PWM signal based on a given instruction. Has become.

The display unit 16 is composed of a display element such as an LCD or an LED, and displays the control state of the induction motor 12 based on the display signal from the inverter control circuit 15. The receiving circuit 17 receives an infrared signal transmitted from the outside, converts the infrared signal into an electric signal, and outputs the signal to the inverter control circuit 15 as an operation signal. From the light receiving element such as a phototransistor and the signal conversion circuit, etc. It is configured.

The remote controller 18 as remote control means transmits an operation signal to the inverter device 11 and is constructed as follows. That is, the remote controller control unit 19 including a microcomputer and the like has the operation input unit 20.
An operation signal for the inverter device 11 is generated in accordance with an operation input from, and the operation content is displayed on the display unit 21. The transmission circuit 22 is for outputting the operation signal generated by the remote controller control unit 19 to the outside as an infrared signal, and is composed of an infrared LED and a drive circuit. The battery 23 is
Power is supplied to each circuit inside the device.

Next, the operation of this embodiment will be described.
The induction motor 1 is operated by operating the operation input unit 20 of the remote controller 18.
When the drive control content of 2 is input, the remote controller control unit 19
Generates an operation signal in response to this, outputs the operation signal to the transmission circuit 22, and also outputs the display signal to the display unit 21. As a result, the transmission circuit 22 transmits the infrared signal according to the operation signal by controlling the lighting of the LED, and the display unit 21 displays the operation contents.

In the inverter device 11, when the infrared signal is received by the receiving circuit 17, the infrared signal is converted into an electric signal and input to the inverter control circuit 15 as an operation signal. The inverter control circuit 15 supplies a PWM signal to the main circuit unit 14 in accordance with the control content of the induction motor 12 based on the input operation signal, so that the induction motor 12 drives and controls according to the operation content. Will be done.

According to the present embodiment as described above, the remote controller 1
It becomes possible to control the main circuit section 14 by transmitting an operation signal from 8 by an infrared signal, and receiving the infrared signal on the inverter device 11 side and inputting it as an operation signal. No need to arrange a cable between the two, and the trouble of connecting the cable is eliminated, and the infrared signal can be transmitted freely within the area where it can be transmitted, improving usability and being superimposed on the cable. It is possible to prevent the adverse effects of external noise that is generated.

2 to 5 show the second embodiment of the present invention. The difference from the first embodiment is that the remote controller 18 is provided with an EEPROM 24 as a parameter storing means. The EEPROM 24 stores various device parameters corresponding to the preset inverter device 11. When the operation input unit 20 is operated, the remote controller control unit 19 causes the EEPRO
A corresponding device parameter is read from M24 to generate an operation signal. When the inverter device 11 receives the operation signal, the induction motor 1 receives the operation signal based on the signal corresponding to the device parameter included in the operation signal.
The control signal for performing the control 2 is generated and driven.

Therefore, according to the second embodiment, in addition to the effects of the first embodiment, the inverter device 1
It becomes possible to collectively perform one parameter setting operation, and when setting a plurality of inverter devices 11 to the same parameter, the setting time can be significantly shortened.

FIGS. 3 to 5 show a third embodiment of the present invention. The difference from the first or second embodiment is that an identification code is added to the operation signal transmitted from the remote controller 18, and The configuration is such that drive control is performed in accordance with the operation signal when the identification code is collated on the side of the inverter device 11 and they match.

That is, the remote controller control section 19 of the remote controller 18 has the identification code of the corresponding inverter device 11 stored therein in advance, and operates according to the operation of the operation input section 20 according to the flow chart shown in FIG. Is accepted (step S1), the identification code and the operation signal are subsequently transmitted (steps S2 and S3). This causes the transmitted signal to
The identification code and the operation signal are transmitted at the timing shown in FIG.

On the other hand, on the side of the inverter device 11,
When the inverter control circuit 19 receives a signal from the outside (step T1), the inverter control circuit 19 collates whether the identification codes match (step T2), and if they match, accepts the operation signal and sets the contents. In response, a PWM control signal is generated to control the induction motor 12 and given to the main circuit unit 14.

As a result, for example, in the case of individually setting the device parameters for a large number of inverter devices 11, by setting the device parameters individually and designating the identification code of the corresponding inverter device 11. You will be able to set it with certainty.

FIG. 6 shows a fourth embodiment of the present invention. The difference from the first embodiment is that the inverter device 1
1 is provided with a charger 25, and the battery 23 of the remote controller 18 is replaced with a rechargeable secondary battery 26.
When the remote controller 18 is not used, the remote controller 18 is attached to the charger 25 of the inverter device 11 to charge the secondary battery 26. As a result, the remote controller 18 does not need to perform battery replacement work, and is excellent in usability.

The present invention is not limited to the above embodiment, but can be modified or expanded as follows. It is also possible to provide a transmitter / receiver on both sides to perform bidirectional communication.

The identification code may be set by a hardware configuration. The identification code may be added after the operation signal and transmitted. The charger may be attached to the remote controller so that it can be charged from a household outlet or the like.

[0029]

As described above, according to the operating device for an inverter device of the present invention, the following effects can be obtained. That is, according to the operating device for an inverter device of claim 1, a remote operation means is provided to transmit an operation signal to the inverter device as an infrared signal, and the infrared signal is received by the controlling device of the inverter device. Since the electric motor is driven and controlled, it is not necessary to arrange a cable between the remote control means and the control means, the degree of freedom is increased and the usability is improved, and external noise is mixed. This has an excellent effect that the adverse effect due to the above can be prevented as much as possible.

According to the operating device for the inverter device of the second aspect, since the remote operating means stores the device parameter for controlling the drive of the electric motor by the inverter device in the storing means, a simple operation can be performed at the time of operation. The excellent effect that the operation signal corresponding to the actual operation content can be transmitted only by performing is performed.

According to the third aspect of the present invention, the inverter operation device is configured so that the identification code of the inverter device is transmitted from the remote operation means together with the operation signal, and the control means collates the identification code included in the received signal. Since the electric motor is controlled so as to correspond to the operation signal at that time after checking by the means, it is possible to prevent other electric motors from being accidentally driven, and even when a large number of electric motors are simultaneously driven by the inverter device. This has an excellent effect that the operation signals can be individually transmitted to control the drive.

According to the operating device for the inverter device of the fourth aspect, since the rechargeable battery is mounted on the remote operation means, the battery is charged by a charger, for example, when not in use, so that the battery is in a charged state. As a result, there is an excellent effect that the operation signal can be surely transmitted while the power source is always secured.

[Brief description of drawings]

FIG. 1 is a block diagram showing a first embodiment of the present invention.

FIG. 2 is a block diagram of a transmitter showing a second embodiment of the present invention.

FIG. 3 is a flowchart of a transmission program on the remote control side showing a third embodiment of the present invention.

FIG. 4 is a flowchart of a reception program on the inverter device side.

FIG. 5 is a time chart explaining the form of a transmission signal.

FIG. 6 is a view corresponding to FIG. 2 showing a fourth embodiment of the present invention.

FIG. 7 is a view corresponding to FIG. 1 showing a conventional example.

[Explanation of symbols]

11 is an inverter device, 12 is an induction motor (electric motor),
13 is a three-phase AC power supply, 14 is a main circuit section, 15 is an inverter control circuit (control means), 16 is a display section, 17 is a receiving circuit, 18 is a remote control (remote control means), 19 is a remote control section, and 20 is An operation input unit, 21 is a display unit, 22 is a transmission circuit, 23 is a battery, 24 is an EEPROM (nonvolatile memory), 25 is a charger, and 26 is a secondary battery.

Claims (4)

[Claims] 1. An operating device for an inverter device for operating an inverter device, which is provided so that an electric motor can be operated at a variable speed, comprising: a remote operation means for outputting an operation signal to the inverter device as an infrared signal; An operating device for an inverter device, comprising: a control means for receiving an operation signal from the remote operation means and giving a drive control signal to the electric motor based on the received content. 2. The operating device for an inverter device according to claim 1, wherein the remote operation device includes a storage device for storing device parameters for drive control of the inverter device. 3. The remote control means is configured to transmit an identification code for identifying the inverter device together with the operation signal, and the control means collates the identification code included in the received signal. A means for providing a drive control signal to the electric motor when a match signal is output from the matching means.
The operating device for the inverter device described. 4. The operating device for an inverter device according to claim 1, wherein the remote operation means has a built-in battery as a power source which can be charged by an external power source.