JPS6211400U

JPS6211400U -

Info

Publication number: JPS6211400U
Application number: JP10094585U
Authority: JP
Priority date: 1985-07-02
Filing date: 1985-07-02
Publication date: 1987-01-23

Description

[Brief explanation of the drawing]

第１図、第２図はインバータの従来例を示すも
ので、第１図はインバータのブロツク回路図、第
２図はインバータの経過時間表示を備えた回路の
説明図、第３図〜第６図は本考案に係る運転経過
時間表示付インバータの一実施例を示すもので、
第３図はインバータの経過時間表示を備えた回路
の説明図、第４図はインバータの経過時間表示部
のブロツク説明図、第５図はインバータのメイン
プログラムのフローチヤート図、第６図は経過時
間表示の割込プログラムのフローチヤート図であ
る。２はインバータ、５はＩ／Ｏポート、６は中央
処理装置、７はアナログデイジタル変換器、８は
タイマー、９はドライバー部、１０は速度設定器
、３７は起動スイツチ、４９はデイジタル表示器
、５３は切替スイツチである。 Figures 1 and 2 show conventional examples of inverters. Figure 1 is a block circuit diagram of the inverter, Figure 2 is an explanatory diagram of a circuit with elapsed time display of the inverter, and Figures 3 to 6 The figure shows an example of an inverter with an elapsed operation time display according to the present invention.
Fig. 3 is an explanatory diagram of a circuit equipped with an inverter elapsed time display, Fig. 4 is a block explanatory diagram of the inverter elapsed time display section, Fig. 5 is a flowchart of the inverter's main program, and Fig. 6 is a progress diagram. FIG. 3 is a flowchart of a time display interrupt program. 2 is an inverter, 5 is an I/O port, 6 is a central processing unit, 7 is an analog-digital converter, 8 is a timer, 9 is a driver section, 10 is a speed setting device, 37 is a start switch, 49 is a digital display, 53 is a changeover switch.

Claims

[Scope of utility model registration request]

The output of the analog-to-digital converter to which the output of the speed setting device was applied and the output of the I/O port to which the output of the start switch was applied are applied to the central processing unit, and the pulse width control output processed by the central processing unit is sent to the timer. In an inverter that controls the speed of an AC motor by applying voltage to a driver section through a driver section and controlling the pulse width of a transistor in the driver section,
An inverter with an elapsed time display that is provided with a changeover switch at one of the inputs of the /O port, and digitally displays the output frequency or elapsed time of the inverter on one display by turning the changeover switch on and off.