JP2006211746A - Operation panel and inverter device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an operation panel that can simplify wiring to an inverter, and an inverter device using the operation panel. <P>SOLUTION: The inverter device 1 is composed of an operation board 3, the inverter 4 arranged in the operation board 3, and the operation panel 5 arranged on a lid 2 of the operation board 3. The inverter 4 comprises a communication circuit 9. The operation panel 5 comprises a function that operates and indicates the operation state of the inverter 4, and also comprises: a communication circuit 22; a switch 30 as an external apparatus; an analog indicator 31; an indication lamp 32; a connecting point input part 24 that is a signal processing means connected to a volume controller 33 and a digital indicator 34; an analog output part 25; a connecting point output part 26; an analog input part 27; and a pulse-row output part 28. The inverter 4 and the operation panel 5 are connected by a cable 29, and receive signals via the communication circuits 9, 21. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an operation panel having a function of operating and displaying an operation state of an inverter, and an inverter device using the operation panel.

  The inverter device has a configuration in which an inverter is housed in an operation panel, and is used to control the operation state of an electric device such as an electric motor by the inverter. The inverter device can set various control condition data to select the operation state such as operation, stop and operation state of the motor according to the user's request. To set the data, it is necessary to open the lid of the opening on the front surface of the operation panel. However, opening and closing the lid of the operation panel every time the control condition data is changed and set is not workable, and high-voltage electric wires are arranged in the operation panel, which poses danger to the work. There is a problem.

In order to solve such a problem, conventionally, an inverter device having a configuration in which an operation panel is provided on the lid of the operation panel and data of operating conditions is sent from the operation panel to the inverter via a communication circuit is considered. (See, for example, Patent Document 1).
JP-A-10-304671

10 and 11 show the configuration of a conventional inverter device.
That is, the inverter device 100 is configured such that an inverter 103 that drives a motor at a variable speed is housed in an operation panel 102 having a lid 101 at an opening on the front surface, and an operation panel 104 is disposed on the lid 101. Yes. The connector 105 of the inverter 103 and the connector 106 of the operation panel 104 are connected by a four-core cable 107.
The inverter 103 has an operation unit for operating operation states such as operation, stop, and operation state during operation, and a display that displays the operation state. The operation panel 104 has an operation unit for operating the operation state of the inverter 103 and a display for displaying the operation state, and exchanges signals for operation and display with the inverter 103 via the cable 107. To do.

  On the lid 101 of the operation panel 102, in addition to the operation panel 104, a switch 108 for operation and stop as an external device, an analog display 109 for displaying current, a display lamp 110 for operation and stop, and a frequency command A volume 111 and a digital display 112 for voltage display are provided. The switch 108, the analog display 109, the display lamp 110, and the digital display 112 are connected to the terminal block 113 of the inverter 103 through two electric wires 108a, 109a, 110a, and 112a, and a volume 111. Is connected to the terminal block 113 via three electric wires 111a. The switch 108, the analog display 109, the display lamp 110, the volume 111, and the digital display 112 are installed (optional) according to the user's request.

According to such a configuration, in the operation panel 102, the inverter 103, the switch 108, and the analog display 109 are provided between the inverter 103 and the lid 101, in addition to the cable 107 that connects the inverter 103 and the operation panel 104. In addition, it is necessary to arrange a total of eleven electric wires 108a, 109a, 110a, 111a, and 112a for connecting the display lamp 110, the volume 111, and the digital display 112, and there is a problem that wiring becomes complicated. .
In particular, in an inverter device in which a plurality of inverters are arranged in an operation panel, it is necessary to provide an operation panel for each inverter.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide an operation panel capable of simplifying wiring for an inverter and an inverter device using the operation panel.

The present invention provides an operation panel having a function of operating and displaying an operating state of an inverter, a communication means for inputting / outputting information to / from the inverter, an analog signal for operating or displaying the operating state of the inverter, And a signal processing means for inputting or outputting a contact signal or a pulse train signal from the outside, and inputting and outputting signals between the inverter and the signal processing means is performed by the communication means.
According to such a configuration, wiring between the inverter and the external device does not need to be performed directly and can be performed between the operation panel and the external device, so wiring between the inverter and the external device is unnecessary. Thus, the wiring can be simplified.

Further, the present invention provides an operation panel having a function of operating or displaying an operation state of an inverter having an inverter number setting function for setting an inverter number, a communication means for inputting / outputting information to / from the inverter, and a plurality of communication means Inverter number selecting means for selecting the inverter number of the inverter, and an analog signal, contact signal or pulse train signal for operating or displaying the operating state of the inverter selected by the inverter number selecting means is externally input or externally input Signal processing means for outputting, input / output of signals between the inverter and the signal processing means is performed by the communication means, among a plurality of inverters in which the inverter number is set based on the inverter number setting function The operating state of the inverter selected by the inverter number selecting means is Characterized in that it created and displayed.
According to such a configuration, since the operation panel is commonly connected to a plurality of inverters, wiring between the plurality of inverters and the corresponding operation panel is not necessary, and the wiring can be simplified.

  According to the present invention, it is possible to simplify the wiring of the operation panel to the inverter.

(First embodiment)
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.

As shown in FIGS. 1 and 2, the inverter device 1 includes an operation panel 3 having a lid body 2 at an opening on the front surface, an inverter 4 disposed in the operation panel 3, and a lid body 2. The operation panel 5 is provided.
The inverter 4 includes an inverter main circuit 6 in which six switching elements such as IGBTs are connected in a three-phase bridge, a control device 7 as a control means mainly composed of a microcomputer for controlling the inverter main circuit 6, and various settings. An operation display unit 8 for performing various displays and a communication circuit 9 serving as communication means, and a DC power supply for rectifying an AC power supply voltage to obtain a DC drive power supply voltage and obtaining a DC control power supply voltage from the DC drive power supply voltage A circuit 10 and a connector 11 and a terminal block 12.

  In this case, in the inverter device 1, the AC output terminal of the inverter main circuit 6 is connected to a three-phase AC motor, for example, an induction motor, and the DC input terminal of the inverter main circuit 6 is connected to the DC drive power supply voltage of the DC power supply circuit 10. The control device 7 operates the operation state at the time of operation, stop and operation by the operation display unit 8, and controls the inverter main circuit 6 so as to be in the operated operation state. It is like that. The operation state of the inverter main circuit 6 is displayed on the operation display unit 8.

  The operation panel 5 includes a connector 13, a 7-segment four-digit digital display 14, an up (“Δ”) key 15, a down (“▽”) key 16, a run (“RUN”) key 17, A monitor (“MON”) key 18, an ent (“ENT”) key 19, a stop (“STOP”) key 20, and a terminal block 21, and a control mainly composed of a communication circuit 22 and a microcomputer as communication means. A control device 23 serving as a means, a contact input unit 24 serving as a signal processing unit, an analog output unit 25, a contact output unit 26, an analog input unit 27, and a pulse train output unit 28 are provided. The contact input unit 24, the analog output unit 25, the contact output unit 26, the analog input unit 27, and the pulse train output unit 28 are connected to the terminal block 21.

  The connector 11 of the inverter 4 and the connector 13 of the operation panel 5 are connected by a four-core cable 29. In this four-core cable 29, the two core wires are used as power supply wires for supplying the DC control power supply voltage of the DC power supply circuit 10 to the operation panel 5 side, and the remaining two core wires are the communication circuit of the inverter 4. 9 and the communication circuit 22 of the operation panel 5 are used as communication lines for performing bidirectional serial communication.

  The lid 2 of the operation panel 3 includes an operation / stop switch 30 as an external device, an analog display 31 for current display, a display lamp 32 for operation / stop, a volume 33 for frequency command, and a voltage display. The digital display 34 is provided. The switch 30, the analog display 31, the display lamp 32, and the digital display 34 are connected to the terminal block 21 of the operation panel 5 through the two electric wires 30a, 31a, 32a, and 34a, and the volume. 33 is connected to the terminal block 21 via three electric wires 33a. The switch 30, the analog display 31, the display lamp 32, the volume 33 and the digital display 34 as external devices are installed (optional) according to the user's request.

  Next, operation of the inverter 4, parameter setting, and parameter monitoring using the operation panel 5 will be described with reference to FIGS. 3 to 7. The operation panel 5 can operate operation states such as operation, stop, and operation states during operation, as with the operation display unit 8. The operation and display by the operation of the operation panel 5 is performed when the control device 7 of the inverter 4 receives a signal from the operation panel 5 and executes it with priority over the signal from the operation display unit 8, or The apparatus 7 is configured to receive a priority execution parameter setting from the operation panel 5.

(Driving-part 1)
When the inverter 4 is operated, an operation as shown in FIG. 3 is performed.
First, when the operation panel 5 is powered on, “0.0” is displayed on the digital display 14. When the up key 15 or the down key 16 is pressed, the operating frequency is changed and displayed on the digital display 14, for example, “60.0”. When the ENT key 29 is pressed, the operating frequency is determined (set), and “FC” and the set value “60.0” are alternately displayed on the digital display 14. When the run key 17 is pressed, the operation frequency is displayed on the digital display 14, and this operation frequency (parameter) information is transmitted to the communication circuit 22, connector 13, cable 29, connector 11, and communication circuit 9 by the control device 23. This is given to the control device 7 of the inverter 4 via the path, and the control device 7 starts the operation of the inverter main circuit 6 (induction motor) and raises it to the set operating frequency according to the set acceleration time.

  During the operation of the inverter main circuit 6 (inverter 4), the digital display 14 displays the operation frequency “60.0”. During the operation, the control device 7 of the inverter 4 sends an ON signal (contact signal) indicating that the operation is in progress via the communication circuit 9, the connector 11, the cable 29, the connector 13, and the communication circuit 22. To the control device 23. Thereby, the control apparatus 23 lights the display lamp 32 via the contact output part 26 and the electric wire 32a, and displays (notifies) that the inverter main circuit 6 (inverter 4) is in operation.

  The control device 7 gives information on the current (load current) flowing through the inverter main circuit 6 (induction motor) through the same path as described above to the control device 23 of the operation panel 5, and the control device 23 receives the load current information (analog signal). ) Is displayed on the analog display 31 via the analog output unit 25 and the electric wire 31a. Then, the control device 7 gives information on the output voltage (input voltage of the induction motor) of the inverter main circuit 6 to the control device 23 of the operation panel 5 through the same path as described above, and the control device 23 outputs the output voltage information (pulse train). Signal) is provided to the digital display 34 via the pulse train output unit 28 and the electric wire 34a. The digital display 34 is composed of an up / down counter, and digitally displays the output voltage of the inverter main circuit 6 by up-counting or down-counting the pulse train supplied from the pulse train output unit 28.

  Thereafter, when the stop key 20 is pressed, this information is given to the control device 7 of the inverter 4 through the same route as described above, and the control device 7 operates the inverter main circuit 6 (induction motor) according to the set deceleration time. Stop. Along with this, the control device 7 of the inverter 4 controls the operation panel 5 via the path of the communication circuit 9, the connector 11, the cable 29, the connector 13 and the communication circuit 22, as an off signal (contact signal) indicating operation stop. To device 23. The control device 23 turns off the display lamp 32 via the contact output unit 26, thereby notifying that the inverter main circuit 6 (inverter 4) has stopped. At this time, the digital display 14 returns to the display of “0.0”.

(Driving-part 2)
When the inverter 4 is operated, it is also performed by an operation as shown in FIG.
First, when the operation panel 5 is powered on, “0.0” is displayed on the digital display 14. When the run key 17 is pressed and the volume 33 is further turned, this information is given as a voltage signal to the control device 23 via the electric wire 33a and the analog input unit 27, and the voltage signal (analog signal) is given to the digital display 14. For example, “60.0” is displayed, and this operation frequency information is given to the control device 7 of the inverter 4 through the same route as described above, and the operation of the inverter main circuit 6 (induction motor) is started. The

  When the volume 33 is turned during the operation of the inverter 4, the operation frequency corresponding to the volume 33 is displayed on the digital display 14 as "40.0", for example, and this time the inverter main circuit 6 ( The induction motor is operated. During the operation of the inverter 4, the operations of the analog display 31, the display lamp 32, and the digital display 34 are the same as (Operation-Part 1). Thereafter, when the stop key 20 is pressed, the operation of the inverter main circuit 6 (induction motor) is stopped in the same manner as described above, the display lamp 32 is turned off, and the digital display 14 returns to the display of “0.0”. .

  By the way, when the switch 30 is opened (off) during the operation of the inverter 4 according to the above (operation-part 1) or (operation-part 2), this off signal (contact signal) is transmitted to the electric wire 30a and the contact. It is given to the control device 23 via the input unit 24, and the control device 23 gives this off signal to the control device 7 of the inverter 4 through the same path as described above. Thereby, the control device 7 stops the operation of the inverter main circuit 6. Further, the control device 23 turns off the display lamp 32.

  When the switch 30 is closed (ON) while the inverter 4 is stopped, the ON signal (contact signal) is given to the control device 23 via the electric wire 30a and the contact input unit 24. Then, the control device 23 gives this ON signal to the control device 7 of the inverter 4 through the same path as described above. Thereby, the control device 7 restarts the operation of the inverter main circuit 6. The control device 23 turns on the display lamp 32.

(Setting)
When setting the parameters of the inverter 4 (inverter main circuit 6), the operation shown in FIG. 5 is performed.
First, when the operation panel 5 is powered on, “0.0” is displayed on the digital display 14. When the monitor key 18 is pressed, “AUH” indicating parameter setting is displayed on the digital display 14. When the up key 15 or the down key 16 is pressed, the parameter display is sequentially displayed on the digital display 14. For example, when the acceleration time is set as a parameter, until “ACC” is displayed on the digital display 14. The up key 15 or the down key 16 is pressed. Next, when the entry key 19 is pressed, the set value is displayed on the digital display 14 as, for example, “10.0”. When the up key 15 or the down key 16 is pressed, the set values are sequentially displayed on the digital display 14, and when the desired set value is displayed (for example, “10.0”), when the ENT key 19 is pressed, the digital value is displayed. On the display 14, the characters “ACC” and the set value “10.0” are alternately displayed, and the setting is completed. Then, the set value information of the acceleration time is given from the control device 23 to the control device 7 of the inverter 4 through the path described above, and the control device 7 controls the inverter main circuit 6 so that the set acceleration time is reached. The same operation is performed when parameters other than the acceleration time are set.

(monitor)
When monitoring the parameter of the inverter 4, the operation shown in FIG. 6 is performed.
During the operation of the inverter 4, the operation frequency is represented as “60.0” on the digital display 14. When the monitor key 18 is pressed twice, the rotation direction (parameter) of the induction motor is displayed on the digital display 14 as “Fr-F” (forward rotation) or “Fr-r” (reverse rotation). When the up key 15 is pressed, the operating frequency setting value (parameter) is displayed on the digital display 14 as “F60.0”. Further, when the up key 15 is pressed, the load current value (parameter) is displayed as “C80”, for example. Similarly, each time the up key 15 is pressed, the digital display 14 sequentially displays, for example, the inverter input voltage “y100”, the inverter output voltage “P100”, the torque current “c88”, and the like as parameters. When the monitor key 18 is pressed, the operation returns to the original and the operating frequency “60.0” is displayed on the digital display 14.

(Gain adjustment)
In this embodiment, the gain adjustment of the operating frequency by the volume 33 is performed by parameter setting as shown in FIG. In this case, the gain adjustment of the operation frequency means setting a range such as whether 1 V indicated by the volume 33 corresponds to 1 Hz, 10 Hz, or 100 V.

  First, when the operation panel 5 is powered on, “0.0” is displayed on the digital display 14. When the monitor key 18 is pressed, “AUH” indicating parameter setting is displayed on the digital display 14. When the up key 15 or the down key 16 is pressed, the digital display 14 sequentially displays parameters. Therefore, the up key 15 or the down key 16 is pressed until “GAin” indicating gain adjustment is displayed on the digital display 14. Next, when the entry key 19 is pressed, the set value is displayed on the digital display 14 as, for example, “0”. When the up key 15 or the down key 16 is pressed, the set values are sequentially displayed on the digital display 14, and when the desired set value is displayed (for example, “2”), when the ENT key 19 is pressed, the digital display 14, the characters “GAin” and the set value “2” are alternately displayed, and the setting is completed. Then, the operating frequency information based on the setting of the volume 33 based on the gain adjustment is given from the control device 23 to the control device 7 of the inverter 4 through the above-described path.

  Thus, according to the present embodiment, the connector 11 of the inverter 4 disposed in the operation panel 3 and the connector 13 of the operation panel 5 disposed on the lid 2 are connected by the four-core cable 29. The switch 30, the analog display 31, the display lamp 32, the volume 33, and the digital display 34, which are external devices disposed on the lid 2, are connected to the terminal block 21 of the operation panel 5 by the electric wires 30 a, 31 a, 32 a, 33 a and 34 a. Therefore, the wiring between the inverter 4 and the operation panel 5 is only the cable 29, and therefore the wiring can be simplified as compared with the conventional case.

  Further, according to the present embodiment, since the gain adjustment of the voltage of the volume 33 for setting the operation frequency is performed, the operation frequency can be set over a wide range by using the volume 33. In addition, since the operation frequency can be set finely, and the gain adjustment is performed by setting the parameters, no special circuit, wiring or the like for the gain adjustment is required.

(Second embodiment)
FIG. 8 shows a second embodiment of the present invention. The same parts as those in the first embodiment are denoted by the same reference numerals, and different parts will be described below.
In the operation panel 3, a plurality of inverters 4, 4... Having inverter numbers set such as “No. 1”, “No. 2”. Accordingly, each inverter 4 has an inverter number setting function for setting an inverter number assigned to itself.

  The connector 11 of the “No. 1” inverter 4 is connected to the connector 13 of the operation panel 5 by a four-core cable 29, and a plurality of inverters 4, 4. They are connected to each other via core cables 29a. The operation panel 5 is provided with an inverter number selector 35 serving as an inverter number selection means so that an inverter number can be selected.

  Each inverter 4 is provided with an inverter main circuit 6, a control device 7, an operation display unit 8, a communication circuit 9 and a DC power supply circuit 10, as in the inverter 4 shown in FIG. As with the operation panel 5 shown in FIG. 1, a communication circuit 22 and a control device 23 are provided, but are not shown in FIG. 8 for simplification of the drawing. Therefore, in this embodiment, the reference numerals shown in FIG. 1 are referred to when necessary.

  When the inverter number selector 35 is operated to select an inverter number, the inverter number information is given from the control device 23 to the connector 11 of each inverter 4 through the communication circuit 22, the connector 13, and the cables 29 and 29a. The signal is given to the control device 7 via the communication circuit 9. As a result, various signals as described in the first embodiment can be exchanged between the control device 7 of the inverter 4 and the control device 23 of the operation panel 5 to which the selected inverter number is assigned. A similar operation is performed. The same applies to the switch 30, the analog display 31, the display lamp 32, the volume 33 and the digital display 34 which are external devices, and the operation and display of the inverter 4 to which the selected inverter number is assigned is performed.

  When the inverter number selection by the inverter number selector 35 is a value outside the inverter number setting range, for example, the selection of the inverter number is a number “No. 0” (wild number) that is not assigned to any inverter. The operation panel 5 allows a plurality of inverters 4, 4... To be set simultaneously. However, in this case, all the operating conditions of the plurality of inverters 4, 4... Need to be the same.

  According to the second embodiment, the operation state of the plurality of inverters 4, 4... Can be operated and displayed with one operation panel 5, so that an operation panel is provided for each inverter. Wiring can be simplified, and it is economical because only one operation panel 5 is required. Since the switch 30, the analog display 31, the display lamp 32, the volume 33, and the digital display 34, which are external devices, can be used in common for a plurality of inverters 4, 4,. And become more economical.

(Third embodiment)
FIG. 9 shows a third embodiment of the present invention. In the third embodiment, FIGS. 1 and 8 are also referred to for convenience of explanation.
In the second embodiment, the inverter number is selected by the inverter number selector 35. In the third embodiment, the inverter number selector 35 is not used, and the inverter number is selected by a parameter.

    First, when the operation panel 5 is powered on, “0.0” is displayed on the digital display 14. When the monitor key 18 is pressed, “AUH” indicating parameter setting is displayed on the digital display 14. When the up key 15 or the down key 16 is pressed, the parameter display is sequentially displayed on the digital display 14. For example, the up key 15 or the down key is displayed until the inverter number selection "Invn" is displayed on the digital display 14. Key 16 is pressed. Next, when the entry key 19 is pressed, the set value is displayed on the digital display 14 as, for example, “0”. When the up key 15 or the down key 16 is pressed, the set values are sequentially displayed on the digital display 14, and when the desired set value is displayed (for example, “1”), when the ENT key 19 is pressed, the digital display 14, the characters “Invn” and the set value “1” are alternately displayed, and the selection is completed.

  This inverter number information is given from the control device 23 to the control devices 7, 7... Of the inverters 4, 4... Via the above-described route, and the selected inverter number is assigned (for example, “No. 1”). The various signals as described in the first embodiment can be exchanged between the control device 7 of the inverter 4 and the control device 23 of the operation panel 5, and the same operation is performed. The same applies to the switch 30, the analog display 31, the display lamp 32, the volume 33 and the digital display 34 which are external devices, and the operation and display of the inverter 4 to which the selected inverter number is assigned is performed.

  According to the third embodiment, since the inverter numbers of the plurality of inverters 4, 4... Are identified and selected by the parameter setting values, the inverter number selector 35 as in the second embodiment. The circuit configuration and wiring can be simplified accordingly, which is economically advantageous.

The present invention is not limited to the embodiments described above and shown in the drawings, and the following modifications and expansions are possible.
In the above embodiment, serial communication is performed between the inverter 4 and the operation panel 5 using the four-core cable 29. However, parallel communication is performed using a multi-core cable exceeding four cores. May be.
In the above embodiment, the switch 30, the analog display 31, the display lamp 32, the volume 33, and the digital display 34 are connected as external devices to the terminal block 21 of the operation panel 5, but these are connected as necessary. What is necessary is just to be able to connect, and things other than these may be connected.

  In the second embodiment, the operation panel 5 has a contact input unit 24 as signal processing means connected to the switch 30, the analog display 31, the display lamp 32, the volume 33 and the digital display 34 as external devices, Although the analog output unit 25, the contact output unit 26, the analog input unit 27, and the pulse train output unit 28 are provided, these may be provided as necessary.

The figure which shows schematic structure of 1st Example of this invention. A perspective view with the lid open Action explanation diagram at the start of operation Illustration of different actions at the start of operation Action diagram for setting Action diagram for monitoring Action explanatory diagram at the time of gain adjustment FIG. 1 equivalent view showing a second embodiment of the present invention. Action explanatory drawing at the time of inverter number selection showing the 3rd example of the present invention 1 equivalent diagram showing a conventional example 2 equivalent diagram

Explanation of symbols

  In the drawings, 1 is an inverter device, 2 is a lid, 3 is an operation panel, 4 is an inverter, 5 is an operation panel, 6 is an inverter main circuit, 7 is a control device (control means), and 9 is a communication circuit (communication means). , 11 is a connector, 13 is a connector, 21 is a terminal block, 22 is a communication circuit (communication means), 23 is a control device (control means), 24 is a contact input section (signal processing means), and 25 is an analog output section (signal) Processing means), 26 is a contact output section (signal processing means), 27 is an analog input section (signal processing means), 28 is a pulse train output section (signal processing means), 29 is a cable, 30 is a switch (external device), 31 Is an analog display (external device), 32 is a display lamp (external device), 33 is a volume (external device), 34 is a digital display (external device), 30a to 34a are electric wires, and 35 is an inverter number selector (I). Shows the converter number selection means).

Claims (9)

In the operation panel having the function of operating and displaying the operating state of the inverter,
Communication means for inputting and outputting information to and from the inverter;
Signal processing means for inputting or outputting an analog signal, a contact signal or a pulse train signal for operating or displaying the operating state of the inverter from the outside;
An operation panel, wherein the communication means inputs and outputs signals between the inverter and the signal processing means.   2. The operation panel according to claim 1, further comprising a gain adjusting function for adjusting a gain of the analog signal. In an operation panel having a function of operating or displaying an operation state of an inverter having an inverter number setting function for setting an inverter number,
Communication means for inputting and outputting information to and from the inverter;
An inverter number selection means for selecting an inverter number of a plurality of inverters;
Signal processing means for inputting or outputting an analog signal, contact signal or pulse train signal for operating or displaying the operating state of the inverter selected by the inverter number selecting means from the outside;
Inverter selected by the inverter number selection means among a plurality of inverters that perform inverter input / output of signals between the inverter and the signal processing means by the communication means, and the inverter number is set based on the inverter number setting function An operation panel for operating and displaying the operation state of   4. The operation panel according to claim 3, wherein when the value outside the inverter number setting range is selected by the inverter number selection means, the operation state of all inverters can be operated.   5. The operation panel according to claim 3, wherein the inverter number selection means has parameter storage means and is configured to select according to parameters. An operation panel having a lid for opening and closing the opening;
An inverter disposed in the operation panel;
An inverter device comprising the operation panel according to claim 1 or 2 disposed on a lid of the operation panel. An operation panel having a lid for opening and closing the opening;
An inverter disposed in the operation panel;
An external device disposed on the lid of the operation panel;
The operation panel according to claim 1 or 2 disposed on the lid of the operation panel,
The inverter device characterized in that the external device inputs and outputs signals to and from the signal processing means of the operation panel. An operation panel having a lid for opening and closing the opening;
A plurality of inverters arranged in the operation panel;
An inverter device comprising: the operation panel according to claim 3 disposed on a lid of the operation panel. An operation panel having a lid for opening and closing the opening;
A plurality of inverters arranged in the operation panel;
An external device disposed on the lid of the operation panel;
The operation panel according to any one of claims 3 to 5 disposed on the lid of the operation panel,
The inverter device according to claim 1, wherein the external device inputs / outputs a signal to / from a signal processing unit of the operation panel.

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