JPS5947232U - Protection circuit for variable speed motor - Google Patents

Protection circuit for variable speed motor

Info

Publication number
JPS5947232U
JPS5947232U JP1982141117U JP14111782U JPS5947232U JP S5947232 U JPS5947232 U JP S5947232U JP 1982141117 U JP1982141117 U JP 1982141117U JP 14111782 U JP14111782 U JP 14111782U JP S5947232 U JPS5947232 U JP S5947232U
Authority
JP
Japan
Prior art keywords
motor
speed
variable speed
protection circuit
detection device
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
JP1982141117U
Other languages
Japanese (ja)
Inventor
吉武　秀樹
木下　久
忍 懸
Original Assignee
松下電器産業株式会社
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 松下電器産業株式会社 filed Critical 松下電器産業株式会社
Priority to JP1982141117U priority Critical patent/JPS5947232U/en
Publication of JPS5947232U publication Critical patent/JPS5947232U/en
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Ac Motors In General (AREA)
  • Stopping Of Electric Motors (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、本考案の一実施例の回路図、第２図゛は、速
度制御装置の制御電圧と駆動信号と、本考案の一実施例
の電源回路の出力のそれぞれのタイムチャートを示す図
である。 １・・・電源回路、２・・二速度検出装置、３，４・・
・コンパレータ、５・・・サイリスタ、６・・・リレー
。Fig. 1 is a circuit diagram of an embodiment of the present invention, and Fig. 2 is a time chart of the control voltage and drive signal of the speed control device, and the output of the power supply circuit of the embodiment of the present invention. It is a diagram. 1... Power supply circuit, 2... Two-speed detection device, 3, 4...
・Comparator, 5...thyristor, 6...relay.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 電動−と、前記電動機の速度検出装置と、前記速度検出
装置の出力により前記電動機の速度を制御する速度制御
装置とを有する可変速電動機において、電源を役人して
から前記電動機に電圧が印加されるまでの時間より短い
時間だけ電圧を供給する手段と、前記速度検出装置の出
力端子間に前記電圧を供給する手段からの電圧により比
較電圧を発生させる手段と、前記比較電圧を所定の上限
および下限の基準電圧とそれぞれ比較する手段と、前記
比較する手段の出力により動作するスイッチング手段と
からなり、前記速度検出装置の短絡または開放等の異常
を検出し、前記速度制御装置の電源を遮断する等により
、前記電動機を保護することを特徴とする可変速電動機
の保護回路。In a variable speed motor having an electric motor, a speed detection device for the motor, and a speed control device for controlling the speed of the motor based on the output of the speed detection device, a voltage is applied to the motor after the power source is turned off. means for supplying a voltage for a time shorter than the time required for the speed detection device to reach the output terminal; Comprised of means for comparing each with a lower limit reference voltage, and a switching means operated by the output of the comparing means, the device detects an abnormality such as a short circuit or an open circuit in the speed detecting device, and cuts off the power to the speed controlling device. A protection circuit for a variable speed motor, characterized in that it protects the motor.
JP1982141117U 1982-09-20 1982-09-20 Protection circuit for variable speed motor Pending JPS5947232U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1982141117U JPS5947232U (en) 1982-09-20 1982-09-20 Protection circuit for variable speed motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1982141117U JPS5947232U (en) 1982-09-20 1982-09-20 Protection circuit for variable speed motor

Publications (1)

Publication Number Publication Date
JPS5947232U true JPS5947232U (en) 1984-03-29

Family

ID=30315716

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1982141117U Pending JPS5947232U (en) 1982-09-20 1982-09-20 Protection circuit for variable speed motor

Country Status (1)

Country Link
JP (1) JPS5947232U (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5149060A (en) * 1974-08-06 1976-04-27 Emu Deru Kasuchiro Fuan
JPS5471347A (en) * 1978-05-22 1979-06-07 Mazda Motor Corp State detector

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5149060A (en) * 1974-08-06 1976-04-27 Emu Deru Kasuchiro Fuan
JPS5471347A (en) * 1978-05-22 1979-06-07 Mazda Motor Corp State detector

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