JPH077966A - Inverter device - Google Patents

Abstract

(57) [Summary] [Purpose] The initial values for each function can be easily and quickly tested by pre-storing the normal initial values for each function. [Structure] When there is a key input from the operation keys 5 of the operation panel 6 (YES in S41), the function code is read out (S42), and the currently set function code data is read out (S43). Next, the initial value of the function code data is read (S44). Here, the data and the initial value are compared (S45), and if the two match, the display is turned off (S46). If the two do not match, the display is set to "E" (S47) and the display 4 is displayed. The comparison result is extinguished or displayed as "E" in the lower one digit in correspondence with the three-digit function code (S48). Next, the function code is incremented by 1 (S49), and the process ends.

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 inspecting an initial set value at the time of factory shipment.

[0002]

2. Description of the Related Art In an inverter device, setting data relating to various functions provided in the device itself, for example, the maximum value of output frequency, acceleration / deceleration time of output frequency, etc., can be arbitrarily changed by the user 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 inspect that the initial values are set correctly at the time of shipping the inverter device.

Generally, the inspection of the initial value is carried out as follows. Display 4 and key 9 as shown in FIG.
On the operation panel 8 including 1 to 97, the setting contents are confirmed by the display 4 while operating the 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 top 2 of the display 4
The function code "00" is displayed in the digit.

Next, the increment key 97 is pressed three times to display the function code "03". Here, "S
Press the “ET” key 92. Then, in the last 2 digits of display 4,
"01" is displayed as the setting data of the function code "03". Therefore, whether or not the displayed setting data is correct is confirmed with reference to the manual shown in FIG.

Since the manual describes that the initial setting value of the function code "03" is "00", it is found that the setting data is incorrect. Further, when the inspection is advanced for other functions, the increment key 9
This is performed by pressing 7 and the "SET" key 92 to display another function code and the data set therein and comparing it with the manual.

[0006]

However, inspecting the set value by such a procedure is inefficient because the operation is troublesome and the time required for the inspection is long. The present invention has been made in order to solve the above problems, and an object of the present invention is to provide an inverter device capable of inspecting an initial set value quickly by a simple operation.

[0007]

In order to achieve the above object, a first aspect of the present invention is an inverter device which is capable of inputting a set value for each function item and which is provided with a display for displaying the set value. , The read-only memory in which the set value for each function item that is preset as the factory default is written, and the set value that is actually set for each function item based on the input operation to instruct the start of inspection. It is characterized by further comprising means for comparing the set value of the read-only memory with each other, determining that the result is acceptable only when the values match, and displaying the result of the determination on the display.

A second aspect of the invention is characterized in that, in the first aspect of the invention, there is provided a means for comparing a function code representing a function item and a determination result thereof and displaying the result on a display.

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

[0010]

In the first aspect of the present invention, the 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 to instruct the start of inspection, the set value actually set for each function item is compared with the set value of the read-only memory, and only if they match, it is judged as pass, and the judgment result is Displayed on the display.

In the second aspect of the invention, the function code representing the function item and the determination result thereof are compared and displayed on the display.

According to the third aspect of the invention, only the function codes of the functions whose judgment result in the function items is unacceptable are listed and displayed on the display.

[0013]

Embodiments 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 is an inverter device body, which controls the rotation of the motor 3 by converting the input frequency of the power supply 2 and the like. In the main body 1,
Operation panel 6 including display 4 and a plurality of operation keys 5
Is installed.

The operation panel 6 allows input of set values for each function while confirming the display on the display 4 by pressing the operation keys 5, and for each function which is a feature of the present invention. It is automatically checked whether the correct initial value is set. In the illustrated example, the display 4 is composed of a 4-digit 7-segment display. When the mode of the operation panel 6 is switched by key operation, a function code for classifying each function is displayed in the upper 3 digits of the display 4, and an inspection result is displayed in the lower 1 digit.

In the display example shown in the upper right part of the figure, the function code "F03" is displayed in the upper 3 digits and the blank is displayed in the lower 1 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 acceptable. Here, if the setting value corresponding to the function code “F03” is different from the initial value,
"E" is displayed in the last digit as shown in the lower right part of the figure.

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

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

Next, when the increment key 52 is pressed three times, "F03" is displayed in the function code display and "E" is displayed in the last digit. This means that for the function code “F03”, the setting value is different from the original initial value and is unacceptable. Thereafter, similarly, the increment key 52 is pressed to change the display of the function code in order, and at the same time, the lower one digit indicates whether or not the initial value is correct. FIG. 4 is a flow chart systematically showing the operation after switching to the function code reference mode.

In the figure, if 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 the two match, the display is turned off (S46),
If they do not match, the display is "E" (S4).
7). Next, after displaying the function code and the symbol (S4
8), increment the function code by 1 (S49),
The process ends.

As described above, in the first embodiment, it is possible to automatically determine whether the set value of the function corresponding to the code is a correct initial value by simply displaying the function code in the function code reference mode. Is determined and displayed. This facilitates the inspection of the initial value at the time of factory shipment and shortens the inspection time. In the embodiment, the judgment display of the last digit is blank for pass and "E" for fail, but of course, this can be changed to any display.

FIG. 5 is an explanatory diagram showing an inverter device according to the second embodiment of the present invention and a display example thereof. This embodiment differs from the first embodiment shown in FIG. 1 in the display 7 of the operation panel 6. Since the other parts are common to the first embodiment, the common parts are designated by the same reference numerals and the description thereof will be omitted. The display 7 is composed of an LCD screen and can display many digits both vertically and horizontally as compared with the display 4 of the first embodiment.

In 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, and it is determined in advance. Different from the initial values, the function codes of the functions determined to be unsuccessful are listed in order on the screen as shown on the right side of the figure. Next, the key operation at the time of inspection will be described with reference to the perspective view of the operation panel 6 of FIG.

First, the "PRG" key 51 is pressed to switch to the 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 which are not matched and are determined to be unsuccessful are searched and displayed on the display 7 in order. In the figure, six function codes are displayed as failed. Here, when all the rejected function codes cannot be displayed on the screen, the screen can be scrolled to be displayed.

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

In this way, in the second embodiment, a function whose reference 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 factory shipment and shortens the inspection time. Furthermore, when resetting the initial value of the failed function based on the inspection result,
The list of defective functions improves workability.

[0026]

As described above, according to the first invention,
By automatically determining whether or not the set value for each function item actually set is set to a preset initial value, the set value can be easily inspected at the time of factory shipment. You can do it in a short time.

According to the second aspect of the present invention, the function code representing the function item and the determination result thereof are displayed in contrast to each other, so that the determination result can be easily confirmed and the efficiency of the inspection is improved.

According to the third aspect of the invention, by displaying only the function codes of the functions whose judgment result in the function items is unacceptable and displaying them on the display, the judgment result can be easily confirmed, and the inspection can be performed. The efficiency of is improved, and it becomes easy to correct the set value of the function item that has failed.

[Brief description of drawings]

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

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

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

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

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

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

FIG. 7 is a flowchart showing 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]

 1 Inverter device 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

Claims (3)

[Claims] 1. An inverter device equipped with a display for displaying the set value, which allows input of a set value for each function item, is set for each function item which is preset as an initial value at the time of factory shipment. Based on the read-only memory in which the value was written and the input operation to instruct the start of inspection, the set value actually set for each function item is compared with the set value of the read-only memory, and the result is passed only when they match. An inverter device comprising: a unit that determines that the determination result is displayed on a display. 2. The inverter device according to claim 1, further comprising means for comparing a function code representing a function item with a determination result thereof and displaying the result on a display. 3. The inverter device according to claim 1, further comprising means for enumerating and displaying on a display, only the function codes of the functions whose judgment result among the function items is a failure. apparatus.