JPS61141997U - - Google Patents
Info
- Publication number
- JPS61141997U JPS61141997U JP2377885U JP2377885U JPS61141997U JP S61141997 U JPS61141997 U JP S61141997U JP 2377885 U JP2377885 U JP 2377885U JP 2377885 U JP2377885 U JP 2377885U JP S61141997 U JPS61141997 U JP S61141997U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- inverter
- grinder
- output voltage
- drive data
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Control Of Ac Motors In General (AREA)
Description
第１図は本考案実施例のブロツク線図、第２図
、第３図に従来例のブロツク線図を示す。
……交流電源、……インバータ電源、…
…電気デイスクグラインダ、ＢＤ……逆変換器ベ
ースドライブ回路、Ｖｃｃ……制御電圧、ＳＷ…
…ロツク機構付始動／停止スイツチ、ＲＯＭ……
記憶回路、ＰＷＭ……ＰＷＭ回路、ＶＦＣ……Ｖ
／Ｆコンバータ、ＣＮ……カウンタ、Ｄ……駆動
回路、ＦＧ……関数発生器、ＳＴ……タイマー回
路、ＩＮＨ……インヒビツト信号生成回路、ＯＣ
Ｔ……過電流検出器。
FIG. 1 shows a block diagram of an embodiment of the present invention, and FIGS. 2 and 3 show block diagrams of a conventional example. ...AC power supply, ...Inverter power supply, ...
...Electric disk grinder, BD...Inverse converter base drive circuit, Vcc...Control voltage, SW...
...Start/stop switch with lock mechanism, ROM...
Memory circuit, PWM...PWM circuit, VFC...V
/F converter, CN...Counter, D...Drive circuit, FG...Function generator, ST...Timer circuit, INH...Inhibit signal generation circuit, OC
T...Overcurrent detector.
Claims (1)
ｃｃを、グラインダ側のロツク機構付始動／停止
スイツチＳＷを介して与え、ドライブデータの記
憶されている記憶回路ＲＯＭより、制御電圧Ｖｃ
ｃに応じた電圧、周波数のドライブデータをそれ
ぞれＰＷＭ回路、Ｖ／Ｆコンバータ・カウンタを
介し読み出しかつ駆動回路Ｄを介し逆変換器ＩＮ
Ｖに与えて、グラインダを駆動するようにしたイ
ンバータ駆動の電気デイスクグラインダにおいて
、交流電源印加の際の短時間作動し、最大出力電
圧指令を上記ＰＷＭ回路へ与え、制御電圧Ｖｃｃ
と相まつて記憶回路ＲＯＭより最大出力電圧のド
ライブデータを読み出し逆変換器ＩＮＶ出力電圧
を最大値とする、タイマー回路ＳＴと、この最大
出力電圧による過大電流を検出するべく、直流中
間回路に挿入の過電流検出器のＯＣＴと、この過
電流検出器のＯＣＴ出力を受けインヒビツト信号
を生成、駆動回路Ｄへ加え、記憶回路ＲＯＭから
のドライブデータを禁止するインヒビツト信号生
成回路ＩＮＨ、を備えたことを特徴とするインバ
ータ駆動電気デイスクグラインダ。 Control voltage V of inverter base drive circuit BD
cc is applied via the locking start/stop switch SW on the grinder side, and the control voltage Vc is applied from the memory circuit ROM in which drive data is stored.
The voltage and frequency drive data corresponding to c are read out through the PWM circuit and the V/F converter/counter, respectively, and then sent through the drive circuit D to the inverse converter IN.
In an inverter-driven electric disk grinder in which the grinder is driven by applying a maximum output voltage command to the PWM circuit, the control voltage Vcc is activated for a short time when AC power is applied.
At the same time, there is a timer circuit ST that reads drive data for the maximum output voltage from the storage circuit ROM and sets the inverter INV output voltage to the maximum value, and a timer circuit ST that is inserted into the DC intermediate circuit to detect excessive current due to this maximum output voltage. The present invention includes an overcurrent detector OCT and an inhibit signal generation circuit INH that receives the OCT output of the overcurrent detector, generates an inhibit signal, applies it to the drive circuit D, and inhibits drive data from the storage circuit ROM. Features: Inverter-driven electric disc grinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2377885U JPS61141997U (en) | 1985-02-20 | 1985-02-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2377885U JPS61141997U (en) | 1985-02-20 | 1985-02-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61141997U true JPS61141997U (en) | 1986-09-02 |
Family
ID=30517319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2377885U Pending JPS61141997U (en) | 1985-02-20 | 1985-02-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61141997U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016096722A (en) * | 2012-06-12 | 2016-05-26 | フスクバルナ アクティエボラーグ | Electric tool arrangement electric cutting system |
-
1985
- 1985-02-20 JP JP2377885U patent/JPS61141997U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016096722A (en) * | 2012-06-12 | 2016-05-26 | フスクバルナ アクティエボラーグ | Electric tool arrangement electric cutting system |
| US10486250B2 (en) | 2012-06-12 | 2019-11-26 | Husqvarna Ab | Electric cutting system |
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