JPS60190189U - Elevator safety device - Google Patents
Elevator safety deviceInfo
- Publication number
- JPS60190189U JPS60190189U JP7818784U JP7818784U JPS60190189U JP S60190189 U JPS60190189 U JP S60190189U JP 7818784 U JP7818784 U JP 7818784U JP 7818784 U JP7818784 U JP 7818784U JP S60190189 U JPS60190189 U JP S60190189U
- Authority
- JP
- Japan
- Prior art keywords
- safety device
- main transistor
- circuit
- elevator safety
- transistor
- 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
Landscapes
- Emergency Protection Circuit Devices (AREA)
- Protection Of Static Devices (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来のトランジスタインバータ駆動回路を示す
回路図、第２図はこの考案のエレベータの安全装置の一
実施例の回路図、第３図はこの考案のエレベータの安全
装置におけるトランジスタインバータの動作を停止させ
る回路の回路図である。
１．２・・・電源、３・・・ＰＷＭの出力信号の入力部
、４・・・フォトカプラ、５・・・アンプ部、６，７・
・・トランジスタ、９・・・メイントランジスタ、１０
・・・ＣＴ、 ｌ ｌ・・・ＣＴの出力、１５・・・
コンパレータ。なお、図中同一符号は同一または相当部
分を示す。Fig. 1 is a circuit diagram showing a conventional transistor inverter drive circuit, Fig. 2 is a circuit diagram of an embodiment of the elevator safety device of this invention, and Fig. 3 is the operation of the transistor inverter in the elevator safety device of this invention. FIG. 3 is a circuit diagram of a circuit for stopping the 1.2...Power supply, 3...PWM output signal input section, 4...Photocoupler, 5...Amplifier section, 6,7.
...Transistor, 9...Main transistor, 10
...CT, l l...CT output, 15...
comparator. Note that the same reference numerals in the figures indicate the same or corresponding parts.
Claims (1)
このメイントラントランジスタを駆動する回路との間に
設けられたメイントランジスタのベース電流を検出する
検出手段、この検出手段の出力と所定の基準値とを比較
しベース電流が所定以下のとき上記メイントランジスタ
のベース回路７ をしゃ断するかトランジスタインバー
タの動作を停止させる回路を備えてなるエレベータの安
全装置。A detection means for detecting the base current of the main transistor provided between the main transistor of the variable voltage variable frequency inverter and a circuit that drives the main transistor; A safety device for an elevator comprising a circuit that cuts off the base circuit 7 of the main transistor or stops the operation of the transistor inverter when the current is below a predetermined value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7818784U JPS60190189U (en) | 1984-05-28 | 1984-05-28 | Elevator safety device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7818784U JPS60190189U (en) | 1984-05-28 | 1984-05-28 | Elevator safety device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60190189U true JPS60190189U (en) | 1985-12-17 |
Family
ID=30621939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7818784U Pending JPS60190189U (en) | 1984-05-28 | 1984-05-28 | Elevator safety device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60190189U (en) |
-
1984
- 1984-05-28 JP JP7818784U patent/JPS60190189U/en active Pending
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