JPS60190189U - Elevator safety device - Google Patents

Elevator safety device

Info

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
Application number
JP7818784U
Other languages
Japanese (ja)
Inventor
雅之 吉田
祥太 鈴木
Original Assignee
三菱電機株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to JP7818784U priority Critical patent/JPS60190189U/en
Publication of JPS60190189U publication Critical patent/JPS60190189U/en
Pending legal-status Critical Current

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

【図面の簡単な説明】[Brief explanation of drawings]

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)

【実用新案登録請求の範囲】[Scope of utility model registration request] 可変電圧可変周波数インバータのメイントランジスタと
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.
JP7818784U 1984-05-28 1984-05-28 Elevator safety device Pending JPS60190189U (en)

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)

Similar Documents

Publication Publication Date Title
JPS60190189U (en) Elevator safety device
JPS60185078U (en) Pump dry running prevention device
JPS6064269U (en) Common mode noise detection device
JPS6059795U (en) PAM type inverter device
JPS583792U (en) Transistor inverter base driver circuit
JPS58183098U (en) Motor control device
JPS5877911U (en) Audio muting circuit
JPS5992594U (en) Current limiting device for air conditioners with inverters
JPS59124369U (en) Power supply power failure detection circuit
JPS59191891U (en) load drive device
JPH0330797U (en)
JPS6117892U (en) Regenerative power discharge device for inverter equipment
JPS59132385U (en) Inverter protection device
JPS58164288U (en) Cooling fan abnormality detector
JPS6052072U (en) Welding power supply
JPS59122798U (en) Induction motor drive device using an inverter
JPS60108199U (en) Induction motor control device
JPS60119895U (en) Inverter voltage control circuit
JPS60108194U (en) Power supply overcurrent protection circuit
JPS58156395U (en) Inverter device
JPS58121198U (en) AC motor speed control device
JPS60132198U (en) Cooling device for static power converter
JPS6143727U (en) Power panel protection circuit
JPS58112097U (en) Motor drive circuit
JPS5849593U (en) motor drive device