JPH0370493A - Setting method for function of inverter - Google Patents

Abstract

PURPOSE:To reduce in size an inverter by assigning a plurality of inverter functions to be switched in a software to operation keys, and varying the blink digit and speed of a number displaying light emitting diode in response to the operation mode of the inverter. CONSTITUTION:The function settings of inverters are switched in a software, and operations of various modes are formed by operation keys 2. Blink digit and speed of 3-digit 7-segment LED 1 are varied in response to the mode. Three numbers are displayed without flashing in an operation mode. In an operating program mode, 10<2> digit number is blinked and the blink speed is fast. In a stop mode, 10<2>-10<0> digit numbers are blinked and the blink speed is slow. In a stopping program mode, 10<2> digit number is blinked and the blink speed is slow. Alphabet and number are displayed without blink in a strip mode.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for setting functions of an inverter for variable speed control of an AC motor.

[Conventional technology]

As a conventional inverter function setting method of this type, one operation key is assigned to one function to be set, and therefore, the same number of operation keys as the number of functions to be set are provided to set the required function. ing.

[Problem to be solved by the invention]

However, in the conventional inverter function setting method as described above, as the number of functions to be set increases, the number of operation keys also increases, and the space required to install the operation keys also increases. This was an obstacle to downsizing.

In view of the above, it is an object of the present invention to provide an inverter function setting method that reduces the number of operation keys required compared to the number of functions to be set, and reduces the required space, thereby making it possible to downsize the inverter device. It is.

[Means to solve the problem]

In order to achieve the above object, in the inverter function setting method of the present invention, 7-segment light emitting diodes with appropriate digits for numerical display and an appropriate number of operation keys for function setting are used together, and each of the operation keys is A plurality of inverter functions that can be switched on software are assigned to the inverter in accordance with the inverter operating mode, and the blinking digits and point deceleration of the light emitting diodes are changed in accordance with the inverter operating mode.

[Effect]

By assigning meaning to and classifying the operations of the inverter function setting operation keys for each of a plurality of inverter operation modes, one operation key can be used for as many purposes as there are operation modes.

The present invention uses software to perform AND condition calculations between one operation key operation and the plurality of operation mode signals, and furthermore, the inverter operation mode display is set to an appropriate digit of 7.
This is done by changing the blinking digits and point deceleration of segment light emitting diodes (hereinafter referred to as LEDs).

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

Figure 1 is a layout diagram of the LEDs and operation keys on the operation panel, Figure 2 is a diagram of the function assignment of the operation keys, and Figure 3 is a diagram of the LEDs and operation keys.
It is a blinking state diagram.

In FIG. 1, 1 is a 3-digit, 7-segment LED which not only displays numerical values but also displays the inverter operation mode by blinking. Also, 2 is the operation key and part 5
The keys are arranged as shown in the figure, and the main function is attached to the upper part of each key, and the sub functions are attached to the lower part ().

FIG. 2 shows a function assignment diagram of the operation keys when 19 types (up to 25 types) of function settings are made by associating the five operation keys 2 with the five types of inverter operation modes, The correspondence of each function shown in the figure is processed by software as described above.

Moreover, FIG. 3 shows the above-mentioned three digits, that is, 10" digits.

The above 5.
2 is an illustration of a blinking state diagram of LEDs for displaying different inverter operation modes; FIG.

Note that the output frequency, setting frequency 1 function code, setting code, etc. are displayed on the 3-digit 7-segment LED.

〔Effect of the invention〕

According to the present invention, the number of required operation keys can be greatly reduced compared to the number of functions to be set in the inverter by performing a combination calculation on software between the operation of the operation keys for inverter function setting and the inverter operation mode. At the same time, the inverter operation mode can be identified by the combination of the blinking patterns of each digit of the numerical display LED, and an LED dedicated to displaying the operation mode is not required, so that the inverter device can be downsized.

[Brief explanation of drawings]

Figure 1 shows an LED on the operation panel showing an embodiment of this invention.
2 is a diagram of the function assignment of the operation keys corresponding to FIG. 1, and FIG. 3 is a layout diagram of the operation keys corresponding to FIG.
It is a blinking state diagram of ED. l...3-digit 7-segment LED, 2...operation key) Figure III

Claims (1)

[Claims] 1) A function setting method for an inverter that controls an AC motor at variable speed, in which a 7-segment light emitting diode with appropriate digits for numerical display and an appropriate number of operation keys for function setting are used together, and each of the operation keys is In contrast, an inverter characterized in that a plurality of inverter functions that can be switched on software are assigned in accordance with the operating mode of the inverter, and the blinking digit and blinking speed of the light emitting diode are changed in accordance with the operating mode of the inverter. How to set the function.