JPH11206143A - Displaying of inverter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce risk of making a mistake in recognition of the displayed content and shorten time required for setting a function, by providing an equipment with a 7-segment light emitting diode(LED) and a liquid crystal display(LCD), and simultaneously displaying numerical values and the content. SOLUTION: A 4-digit 7-segment LED 1 and a 4-line and 10-digit LCD 2 are located up and down. The LCD 2 displays the name of a function 3 corresponding to a function code in the uppermost line and displays choices 4 corresponding to the name of a function 3 in the lower three lines. At the left end of each of the three lines for choises, a selection mark for displaying the selection state of the line is installed to indicate whether the line is selected 5a or unselected 5b. Numerical values and the content are simultaneously displayed by the LED and the LCD. By this method, the set content of the function can be confirmed easily.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display method of an inverter for controlling an AC motor at a variable speed.

[0002]

2. Description of the Related Art A conventional method of displaying an inverter of this type uses a 7-segment light-emitting diode (hereinafter, referred to as an LED) of a required digit for setting the function of the inverter and displaying its output state. At the time of setting, the code number of the setting target function and the setting contents are selected from the setting code table and numerically displayed by the LED. In the case of the status display, if the content is a quantitative display, the LED is similarly used. It is known that a numerical value is displayed on the display.

[0003]

However, in the inverter function setting method and the output state display method according to the conventional methods described above, the display contents are only numerical data, and many setting objects or display objects are not included. If there is, there is a risk of misrecognition of the display contents of the LED, a setting code table is indispensable in the function setting, and careful setting by the setting code table is required, and the status display In order to reduce the risk of misidentification, ON / OF of the control input / output terminal
It requires the same number of LED groups as the required display target items each having the required number of digits including the F state display.

In view of the above, the present invention reduces the risk of misrecognition of the display contents, reduces the time required for setting the functions, and further reduces the number of LEDs required for the status display. It is intended to provide a display method.

[0005]

In order to achieve the above object, in the method of displaying an inverter according to the present invention, a seven-segment light emitting diode (LED) for numerically displaying various data relating to a function to be set and an output state display item of the inverter is provided. LED) and a liquid crystal display panel (hereinafter referred to as LCD) for displaying contents including the names of the various data, and the numerical display and the contents display are performed simultaneously.

As described above, the numerical display of various data related to the function to be set of the inverter and the output status display item and the content display including the names of these data are indicated by LED and LC, respectively.
By simultaneously performing the setting with D, it is possible to easily and surely confirm the numerical display contents by the function setting operator or the inverter operator. A required digit, for example, a 4-digit, 7-segment LED, and a required row, for example, a 4-row, 10-digit LCD, are vertically arranged and used together to simultaneously perform the above numerical display and content display.

For example, in the function setting of an inverter, a 7-segment LED for displaying a code number of a function to be set,
An LCD for displaying the name of the function to be set corresponding to the code number and a choice of its contents are used together. In the output state display of the inverter, a 7-segment LED for numerical display of the state to be displayed and a level meter An LCD for displaying contents or an ON / OFF state of a control input / output terminal is used in combination.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 and 2 are format diagrams of a function setting screen according to the present invention. FIG. 1 corresponds to a case where the options are within three items, and FIG. 2 is a format corresponding to a case where there are four or more options. FIG. 3 and 4 are format diagrams of an output state display screen according to the present invention. FIG. 3 corresponds to a case where the LCD is used as a level meter indicating a ratio of a numerical value to be displayed to a reference value, and FIG. Turn LCD on / off for each control input terminal
It is a format diagram corresponding to the case where it is used as a status display monitor.

In FIG. 1, 1 is a 4-digit, 7-segment LE.
D and 2 are 4-row and 10-digit LCDs, both of which are arranged above and below each other as shown in the figure. The function name 3 corresponding to the function code is displayed, and options 4 corresponding to the function name 3 are displayed in the lower three lines. At the left end of each of the three option lines, a selection symbol for displaying a selection state is provided as a selection display 5a and a non-selection display 5b as shown in the figure. In the case shown in the figure, the function name is "TAKE HASH", and the selected option is "50 Hz". FIG. 2 shows a case where the number of options 4 is increased to six or less for the two LCDs in FIG.

Next, FIG. 3 shows the same L as in FIGS.
FIG. 3 shows a format diagram of an output state display screen provided with an ED and an LCD. The LCD is used as a level meter for two types of display objects, and two lines are allocated to each of the two lines. The lines 6a and 6b display level meter display contents 6a and 6b, and numerical values corresponding to the contents 6a and 6b are displayed on the lower lines in proportion to the minimum unit of 10%.

FIG. 4 shows a case in which the LCD shown in FIG. 3 is used as a monitor for displaying statuses for eight types of control input terminals. And display symbol 9 for OFF state
a and 9b are provided, and the name of the control input terminal is displayed within four characters on the right side of each symbol.

[0012]

According to the present invention, with respect to the function to be set and the output state to be displayed in the inverter operation, each numerical display and its content display are indicated by LED and L, respectively.
Simultaneously with the CD, the setting contents of the function can be easily checked by the operator, and the risk of erroneous setting and the time required for setting can be reduced.
Furthermore, the inverter operator can easily and reliably check the inverter output state.

[Brief description of the drawings]

FIG. 1 is a format diagram showing an embodiment of a function setting screen according to the present invention;

FIG. 2 is a format diagram showing another embodiment of the function setting screen of the present invention.

FIG. 3 is a format diagram showing an embodiment of an output state display screen according to the present invention;

FIG. 4 is a format diagram showing another embodiment of the output state display screen of the present invention.

[Explanation of symbols]

 1 LED 2 LCD

Claims (1)

[Claims] 1. A method of displaying an inverter for controlling an AC motor at a variable speed, comprising: a seven-segment light emitting diode for numerically displaying various data relating to a function to be set of an inverter and an output state display item; A method of displaying an inverter, comprising: a liquid crystal display panel for displaying contents including the numerical value display and the contents display simultaneously.