JPS6460223A - Excess current detector for motor - Google Patents

Excess current detector for motor

Info

Publication number
JPS6460223A
JPS6460223A JP21180487A JP21180487A JPS6460223A JP S6460223 A JPS6460223 A JP S6460223A JP 21180487 A JP21180487 A JP 21180487A JP 21180487 A JP21180487 A JP 21180487A JP S6460223 A JPS6460223 A JP S6460223A
Authority
JP
Japan
Prior art keywords
line voltage
current
reference level
value
level
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.)
Granted
Application number
JP21180487A
Other languages
Japanese (ja)
Other versions
JP2628508B2 (en
Inventor
Hiroshi Iguchi
Koichi Kondo
Katsuyoshi Shirai
Toshiaki Hamada
Masanori Hirose
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyota Motor Corp
Aisin Corp
Original Assignee
Aisin Seiki Co Ltd
Toyota Motor Corp
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 Aisin Seiki Co Ltd, Toyota Motor Corp filed Critical Aisin Seiki Co Ltd
Priority to JP21180487A priority Critical patent/JP2628508B2/en
Publication of JPS6460223A publication Critical patent/JPS6460223A/en
Application granted granted Critical
Publication of JP2628508B2 publication Critical patent/JP2628508B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Protection Of Generators And Motors (AREA)

Abstract

PURPOSE:To enable operation lock to be detected regardless of the scale of line voltage, by permitting an excess current discriminating reference level to be in proportion to the line voltage when the line voltage is of a specified value or below, and by setting the reference level to be a fixed level when the line voltage is of the specified level or above. CONSTITUTION:A means R1 for detecting the current value of a motor 6 is set, and the input of its detected value SG 5 to a current detecting circuit 20 is provided. In the meantime, the voltage of a power source 12 is detected, and a reference signal producing means for permitting the detected voltage to be in proportion to line voltage when the line voltage is of a specified value or less, and for producing a reference level for a fixed level when the line voltage is of the specified value or more is set. Then, the reference level and the current detection value are compared with each other, and when the current detection value exceeds the reference level, then it is discriminated that the current is excess current, and the protective working of the interruption or the like of a relay 5 is contrived to be executed. As a result, abnormal heat can be prevented from being generated at the time of non-locking.
JP21180487A 1987-08-26 1987-08-26 Motor overcurrent detection device Expired - Fee Related JP2628508B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21180487A JP2628508B2 (en) 1987-08-26 1987-08-26 Motor overcurrent detection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21180487A JP2628508B2 (en) 1987-08-26 1987-08-26 Motor overcurrent detection device

Publications (2)

Publication Number Publication Date
JPS6460223A true JPS6460223A (en) 1989-03-07
JP2628508B2 JP2628508B2 (en) 1997-07-09

Family

ID=16611878

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21180487A Expired - Fee Related JP2628508B2 (en) 1987-08-26 1987-08-26 Motor overcurrent detection device

Country Status (1)

Country Link
JP (1) JP2628508B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04128044U (en) * 1991-05-13 1992-11-20 国産電機株式会社 DC motor control device
WO2014125604A1 (en) * 2013-02-14 2014-08-21 新電元工業株式会社 Method for controlling motor drive circuit, and motor drive circuit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04128044U (en) * 1991-05-13 1992-11-20 国産電機株式会社 DC motor control device
WO2014125604A1 (en) * 2013-02-14 2014-08-21 新電元工業株式会社 Method for controlling motor drive circuit, and motor drive circuit
JP5628448B1 (en) * 2013-02-14 2014-11-19 新電元工業株式会社 Motor drive circuit control method and motor drive circuit

Also Published As

Publication number Publication date
JP2628508B2 (en) 1997-07-09

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees