JP3152019B2 - Inverter device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inverter device, and more particularly to an inverter device capable of easily and quickly checking an initial set value at the time of shipment from a factory.

[0002]

2. Description of the Related Art An inverter device can arbitrarily change the setting data relating to various functions provided in the device itself, for example, the maximum value of the output frequency, the acceleration / deceleration time of the output frequency, etc. on the user side at a later date. However, at the time of shipment from the factory, a specific numerical value is preset as an initial value. Therefore, it is necessary to check that the initial values are correctly set when the inverter device is shipped.

In general, the inspection of the initial value is performed as follows. Display 4 and key 9 as shown in FIG.
On the operation panel 8 provided with 1 to 97, the setting contents are confirmed on the display 4 while operating keys. Specific key operations are performed as shown in the key sequence diagram of FIG.
That is, first, the "PRG" key 91 is pressed to switch to the function code reference mode. Then, the upper 2 of the display 4
The function code "00" is displayed at the digit.

Next, the increment key 97 is depressed three times to change the function code display to "03". Here, "S
Press the "ET" key 92. Then, in the last two digits of the display 4,
“01” is displayed as the setting data of the function code “03”. Therefore, it is confirmed whether the displayed setting data is correct with reference to the manual shown in FIG.

[0005] Since the manual describes that the initial setting value of the function code "03" is "00", it is determined that the setting data is incorrect. Further, when the inspection is to be performed on other functions, the increment key 9 is used.
7 and the "SET" key 92 are pressed to display other function codes and the data set therein and compare them with the manual.

[0006]

However, when the set values are inspected by such a procedure, the operation is troublesome and the time required for the inspection is lengthened, which is inefficient. SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide an inverter device capable of quickly checking an initial set value with a simple operation.

[0007]

According to a first aspect of the present invention, there is provided an inverter apparatus having a display capable of inputting a set value for each function item and displaying a set value. A read-only memory in which a set value for each function item that is predetermined as a factory default value is written, and a set value that is actually set for each function item based on an input operation for instructing start of inspection. Means for comparing the set value of the read-only memory and judging a pass only when the values agree with each other and displaying the result of the judgment on a display device.

The second invention is characterized in that, in the first invention, there is provided a means for comparing a function code representing a function item with a result of the judgment and displaying the result on a display.

A third invention is characterized in that, in the first invention, there is provided means for listing only the function codes of the functions for which the determination result in the function item is rejected and displaying the function codes on a display. .

[0010]

According to the first aspect of the invention, a set value for each function item which is predetermined as an initial value at the time of factory shipment is written in the read-only memory. Based on the input operation for instructing the start of the inspection, the setting value actually set for each function item is compared with the setting value of the read-only memory, and only when the values match, the result is determined to be pass. Displayed on the display.

In the second invention, the function code representing the function item and the result of the judgment are displayed on a display in comparison with each other.

In the third invention, only the function codes of the functions for which the determination result of the function item is rejected are listed and displayed on the display.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory diagram showing an inverter device according to a first embodiment of the present invention and a display example thereof. In the figure, reference numeral 1 denotes an inverter device main body, which controls the rotation of the motor 3 by converting an input frequency of the power supply 2 and the like. In the main body 1,
An operation panel 6 having a display 4 and a plurality of operation keys 5
Is installed.

The operation panel 6 allows the user to input a set value for each function while checking the display on the display unit 4 by pressing the operation key 5, and for each function which is a feature of the present invention. It is automatically checked whether the correct initial value has been set. In the illustrated example, the display 4 is constituted by a 4-digit 7-segment display. When the mode of the operation panel 6 is switched by a key operation, a function code for classifying each function is displayed in the first three digits of the display 4 and an inspection result is displayed in the last digit.

In the display example shown in the upper right part of the figure, a function code "F03" is displayed in the first three digits and a blank is displayed in the last digit. This indicates that the value set as the initial value for the function code “F03” is equal to the original initial value, that is, the inspection result is passed. Here, when the set value corresponding to the function code “F03” is different from the initial value,
As shown in the lower right part of the figure, "E" is displayed in the last digit.

That is, this inverter device main body 1
Although not shown, a normal initial value for each function code is stored as a read-only memory at a manufacturing stage. In addition to the read-only memory, a set value for an actual operation is set in the memory for each function code as an initial value. Thus, by comparing the value set in the memory with the value in the read-only memory, it is possible to determine whether the value set as the initial value correctly matches the original initial value.

Next, key operations at the time of inspection will be described with reference to a perspective view of the operation panel 6 of FIG. 2 and a key sequence diagram of FIG. First, press the "PRG" key 51,
Switch to function code reference mode. “F00” is displayed as a function code in the first three digits of the display 4. Here, since the display of the last digit is blank, the function code “F0
Regarding “0”, the value set as the initial value matches the original initial value, and the test is passed.

Next, when the increment key 52 is pressed three times, "F03" is displayed on the function code display and "E" is displayed on the last digit. This indicates that the set value of the function code “F03” is different from the original initial value and is rejected. Thereafter, similarly, the display of the function code is changed by pressing the increment key 52 in the same manner, and at the same time, whether or not the initial value is correct is displayed in the last digit. FIG. 4 is a flowchart systematically showing the operation after switching to the function code reference mode.

In the figure, when there is a key input (S41Y
ES), the function code is read (S42), and the currently set function code data is read (S4).
3). Next, the initial value of the function code data is read (S44). Here, the data and the initial value are compared (S4
5) If they match, the display is turned off (S46),
If they do not match, the display is set to "E" (S4
7). Next, after displaying the function code and the symbol (S4
8) The function code is incremented by 1 (S49),
The process ends.

As described above, in the first embodiment, merely displaying the function code in the function code reference mode automatically determines whether the set value of the function corresponding to the code is the correct initial value. Is determined and displayed. This facilitates the inspection of the initial value at the time of shipment from the factory and shortens the inspection time. In the embodiment, the lower one digit of the judgment display is blank for the pass and "E" for the rejection in the embodiment, but it can be changed to any display.

FIG. 5 is an explanatory view showing an inverter device according to a second embodiment of the present invention and a display example thereof. This embodiment is different from the first embodiment shown in FIG. 1 in a display 7 of an operation panel 6. The other parts are the same as those of the first embodiment, and the common parts are denoted by the same reference numerals and the description thereof will be omitted. The display 7 comprises an LCD screen, and can display more digits both vertically and horizontally than the display 4 of the first embodiment.

At the time of operation, as in the first embodiment, when the mode of the operation panel 6 is switched by key operation, it is internally determined whether or not the initial values of the respective functions are correct. The function codes of the functions determined to be rejected, unlike the initial values, are displayed in order on the screen as shown on the right side of FIG. Next, a key operation at the time of inspection will be described with reference to a perspective view of the operation panel 6 in FIG.

First, a "PRG" key 51 is pressed to switch to a function code reference mode. Next, when the "R / W" key 54 is pressed, it is determined whether or not the set value for each function matches the original initial value. The function codes of the functions determined to be rejected because they do not match are retrieved and sequentially displayed on the display 7. In the figure, six function codes are displayed as rejected. Here, if all of the failed function codes cannot be displayed on the screen, the screen can be scrolled and displayed.

FIG. 7 is a flowchart systematically showing these operations. In the figure, when there is a key input (S
71YES), and reads out all the function code data currently set (S72). Next, the initial values of all the function code data are read (S73). Here, the data and the initial value are all compared (S74), all function codes different from the initial value are displayed on the display (S75), and the process is terminated.

As described above, in the second embodiment, a function whose initial value is not correctly set is shown by a simple operation of switching to the function code reference mode and pressing the "R / W" key 54. The function code is automatically displayed on the screen.
This facilitates the inspection of the initial value at the time of shipment from the factory and shortens the inspection time. Furthermore, when resetting the initial value of the failed function based on the inspection result,
Since the defective functions can be listed, workability is improved.

[0026]

As described above, according to the first aspect,
By automatically determining and displaying whether or not the set value of each actually set function item is set to a predetermined initial value, it is easy to inspect the set value at the time of shipment from the factory. It can be done in a short time.

According to the second aspect of the present invention, the function code representing the function item and the result of the judgment are displayed on the display in comparison with each other, so that the result of the judgment can be easily confirmed and the efficiency of the inspection is improved.

According to the third aspect of the present invention, only the function codes of the functions for which the judgment result in the function item is rejected are listed and displayed on the display, so that the judgment result can be easily confirmed and the inspection can be performed. And the correction of the set value of the rejected function item is facilitated.

[Brief description of the drawings]

FIG. 1 is an explanatory perspective view showing an external appearance of a first embodiment and a display example thereof.

FIG. 2 is an enlarged perspective view of a main part of FIG. 1;

FIG. 3 is a key sequence diagram showing an operation procedure of the first embodiment.

FIG. 4 is a flowchart illustrating a processing operation of the first embodiment.

FIG. 5 is an external perspective view of a second embodiment and an explanatory diagram showing a display example thereof.

FIG. 6 is an enlarged perspective view of a main part of FIG. 5;

FIG. 7 is a flowchart illustrating a processing operation of the second embodiment.

FIG. 8 is a perspective view of a conventional operation panel.

FIG. 9 is a key sequence diagram showing an operation procedure of a conventional example.

FIG. 10 is an explanatory diagram showing a description example of a manual used in a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Inverter main body 2 Power supply 3 Motor 4 Display 5 Operation key 6 Operation panel 7 Display 51 "PRG" key 52 Increment key 54 "R / W" key

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H02M 7/48 G05B 23/02 302

Claims (3)

(57) [Claims] 1. An inverter device capable of inputting a set value for each function item and having a display for displaying the set value, wherein the setting for each function item is predetermined as an initial value at the time of factory shipment. Based on the read-only memory to which the value has been written and the input operation for instructing the start of inspection, the setting value actually set for each function item is compared with the setting value of the read-only memory, and if the values match, only if the values match And a means for displaying the result of the determination on a display device. 2. The inverter device according to claim 1, further comprising means for comparing a function code representing a function item with a result of the judgment and displaying the result on a display. 3. The inverter according to claim 1, further comprising: means for listing only the function codes of the functions for which the determination result among the function items is rejected and displaying the function codes on a display. apparatus.