JP3684553B2 - Inverter device - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to an inverter device for variable speed control of an AC motor.
[0002]
[Prior art]
An inverter device having an operation console for setting and displaying a conventional inverter operation mode includes a light emitting diode 15 for displaying the numerical data shown in FIG. 3 and a light emitting diode 16 for displaying the rotation direction of the AC motor. And an operation unit (not shown) for switching display contents of the display unit. When setting the operation mode of the inverter, the operation unit is operated to display an operation item, for example, a frequency command setting on the display unit 14 by a code number. Then, the operation unit is operated to display the numerical value of the code number on the display unit 14, and when changing the numerical value, the numerical value is changed by operating the keys of the operation unit and stored in the storage means. . In this way, the operation items are set sequentially. After setting the operation mode, when the start switch is turned on to start the AC motor, the AC motor rotates according to the set operation mode. When the key of the operation unit is operated in this operation state, the output frequency and output current at that time are displayed on the display unit, and the display of the forward or reverse rotation direction is displayed by turning on or blinking the light emitting diode 16. .
[Problems to be solved by the invention]
However, there are many operation items, and some of the operation items may be left as standard settings for the setting operator, or there are operation items that are not relevant in the environment in which they are applied. It is difficult for the setting operator to select a required setting target without omission and error. When the AC motor is operated according to the operating conditions set in this way, the AC motor The direction of rotation is displayed by turning on or blinking the light-emitting diode, making it difficult to intuitively determine the direction of rotation.
The present invention has been made to eliminate the above-described conventional drawbacks, and it is an object of the present invention to improve the operability of the inverter device and make the display of the rotation direction of the AC motor easy to understand.
[0004]
[Means for Solving the Problems]
In order to achieve the above object, the present invention is configured as follows.
The invention of claim 1 includes an inverter control device and an operation console that sets an operation mode and displays the operation mode on a numerical data display unit. In the inverter device that controls the AC motor at a variable speed, the operation console includes: Next to the numerical data display unit, a plurality of function display lamps arranged in rows and columns so as to form a plurality of stages with the same number of columns, and a signal from the arithmetic unit of the inverter control device are input to rotate the AC motor A blinking pattern creating unit for controlling the display in the same rotation direction as the rotation direction of the AC electric motor according to the clockwise or counterclockwise blinking order of the function display lamp is provided.
According to a second aspect of the present invention , the function display lamp blinks clockwise or counterclockwise by using a plurality of stages of the function display lamps .
Furthermore, in the invention of claim 3, the blinking of the function display lamp is performed widely using both ends of the row of the function display lamps .
[0005]
[Action]
By the above means, setting of the operation items is ensured, and when the AC motor rotates, the function indicator lamp blinks clockwise or counterclockwise in the same rotation direction according to the rotation, and the rotation direction of the AC motor is known. Display easily .
[0006]
【Example】
An embodiment of the present invention will be described below with reference to FIGS.
FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a front view of a console of an inverter device. 1 is a power source, 2 is an inverter device, 3 is an AC motor, and 4 is an inverter control device. An arithmetic device 5 (hereinafter referred to as a CPU) that inputs a signal from an operation key provided on an operation console 10 to calculate an operation mode. ) And the signal from the CPU are connected to the read / write storage device 6 and the read-only storage device 7 as needed. The dedicated storage device stores numerical data of operation items when the AC motor is operated as a standard. Reference numeral 8 denotes a numerical data creation unit, which receives a signal from the CPU, creates numerical data of a plurality of operation items set in relation to a number of operation modes of the inverter device, and displays the numerical data on the numerical data display unit 11 of the console 10. Output. Reference numeral 9 is a function display lamp blinking pattern creating unit that inputs a signal from the CPU and lights up the function display lamp 12 of the console 10 that displays basic functions indispensable for driving among a plurality of operation items. Also, during operation of the AC motor, a rotation flashing pattern that sequentially flashes the function display lamp that displays the rotation direction of the AC motor by inputting a signal from the CPU, and flashing that sequentially flashes the function flashing lamp that displays the rotation speed Create a speed pattern and output it to the function display lamp. Reference numeral 10 denotes a console, as shown in FIG. 2, a numerical data display unit 11, a function display lamp 12 disposed beside the numerical data display unit 11, and operation keys disposed beside the function display lamp 12. 13 is provided. The function display lamp 12 classifies a plurality of functions to be instructed in relation to various operation modes of the inverter device into a basic function group essential for operation and an additional function group outside the basic function group. Displays the function of the setting mode. Frequency command setting 12A, output frequency monitor 12B, output current monitor 12C, acceleration time 12D, deceleration time 12E, operator RUN 12F, maximum output frequency 12G, maximum voltage 12H, maximum voltage output frequency 12I , Motor rated current J, operation method selection 12K, parameter selection setting mode 12L are provided, and these function display lamps are arranged vertically and horizontally so that the function display lamp blinks in response to a signal from the blinking pattern creation unit 9. is there. The operation key 13 includes an operation item switching key 13A during operation, a numerical data input key 13B, a numerical data change key 13C, an operation command key 13D, and a stop command key 13E, and outputs the output to the arithmetic device 5 of the inverter control device 4. I have to do it.
In the inverter device configured as described above, when setting the function of the inverter, when the power supply 1 is turned on, the output from the CPU 5 of the inverter control device 4 is input and the function display lamp 12A is lit, and its operation function Is output to the numerical data display unit 11 to display the numerical value.
Now, when changing the numerical data of the operation item of this basic function, the numerical data change key 13C provided on the console 10 is operated to change the numerical value, and the numerical data input key 13B is operated to store in the storage device 7. Enter that number. Next, when changing the numerical data of the next operation item of the basic function, if the operation item switching key 13A is operated, the function display lamp 12B of the basic function of the next operation item is turned on, and this corresponds to the operation function. The numerical data is output to the numerical data display unit 13 and the numerical value is displayed. In this way, the basic functions indispensable for the operation during the sequential operation items and the operation items outside this basic function are set.
Next, when the operation command key 13D of the console 10 is operated, the AC motor 3 rotates in accordance with the set operating conditions, and the function motor lamp 12 is set in advance by the signal from the blinking pattern creation unit 9 to rotate the AC motor. The direction of rotation is displayed by sequentially blinking at a constant blinking speed so as to match the direction. Now, when the rotation direction of the AC motor is normal rotation, the function display lamp sequentially flashes in a counterclockwise flashing pattern with 12G-12J-12K-12L-12I-12H-12G to display the rotation direction of the AC motor. . When the rotational speed of the AC motor 3 is increased, the blinking speed is also increased according to the rotational speed. In the embodiment, the lower two levels of the function display lamp are blinked to display the rotation direction, but the present invention is not limited to this.
[0007]
【The invention's effect】
As described above, the present invention is provided with a plurality of function display lamps vertically and horizontally so as to form a plurality of stages with the same number of columns beside the numerical data display unit, and the plurality of function display lamps are lit to operate the inverter device. Since the function of the item is displayed and the numerical value of the operation item is displayed on the numerical data display unit and changed and set, the operability of the inverter device is improved.
In addition, the function display lamp blinks clockwise or counterclockwise by displaying the rotation direction of the AC motor using a plurality of stages of the function display lamps and further to both ends of the row of the function display lamps. since to perform a wide range so as to be rotational display of the inverter device becomes understandable.
[Brief description of the drawings]
FIG. 1 is a block diagram showing an embodiment of the present invention. FIG. 2 is a front view of the console of FIG. 1. FIG. 3 is a diagram showing a display unit of a conventional console.
DESCRIPTION OF SYMBOLS 1 Power supply 2 Inverter apparatus 3 AC motor 4 Inverter control apparatus 5 Arithmetic apparatus 6 Memory | storage device 7 Dedicated storage apparatus 8 Numerical data creation part 9 Flashing pattern creation part 10 Console 11 Numerical data display part 12 Function display lamp 12A Frequency command setting 12B Output Frequency monitor 12C Output current monitor 12D Acceleration time 12E Deceleration time 12F Operator RUN 12G Maximum output frequency 12H Maximum voltage 12I Maximum voltage output frequency 12J Motor rated current 12K Operation method selection 13 Operation key

Claims (3)

In an inverter device that has an inverter control device and an operation console that sets an operation mode and displays it on a numerical data display unit, and controls the AC motor at a variable speed,
In the console,
Beside the numerical data display unit, a plurality of function display lamps arranged side by side so as to form a plurality of stages with the same number of columns, and
By inputting a signal from the arithmetic unit of the inverter control device, the rotation direction of the AC motor is displayed in the same rotation direction as the rotation direction of the AC motor by the blinking sequence of the function display lamp in the clockwise or counterclockwise direction. An inverter device comprising a blinking pattern creation unit for controlling. 2. The inverter device according to claim 1, wherein the function display lamp is blinked clockwise or counterclockwise using a plurality of stages of the function display lamps. The inverter device according to claim 1 or 2, wherein the blinking of the function display lamp is performed widely using both ends of the row of the function display lamps.

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