JPH0121709B2 - - Google Patents

Info

Publication number
JPH0121709B2
JPH0121709B2 JP58056930A JP5693083A JPH0121709B2 JP H0121709 B2 JPH0121709 B2 JP H0121709B2 JP 58056930 A JP58056930 A JP 58056930A JP 5693083 A JP5693083 A JP 5693083A JP H0121709 B2 JPH0121709 B2 JP H0121709B2
Authority
JP
Japan
Prior art keywords
period
motor
output
counter
cycle
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.)
Expired
Application number
JP58056930A
Other languages
English (en)
Japanese (ja)
Other versions
JPS59209091A (ja
Inventor
Isao Yamazaki
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.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP58056930A priority Critical patent/JPS59209091A/ja
Publication of JPS59209091A publication Critical patent/JPS59209091A/ja
Publication of JPH0121709B2 publication Critical patent/JPH0121709B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
    • H02H7/093—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against increase beyond, or decrease below, a predetermined level of rotational speed

Landscapes

  • Control Of Electric Motors In General (AREA)
JP58056930A 1983-04-01 1983-04-01 モ−タの暴走検出方式 Granted JPS59209091A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58056930A JPS59209091A (ja) 1983-04-01 1983-04-01 モ−タの暴走検出方式

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58056930A JPS59209091A (ja) 1983-04-01 1983-04-01 モ−タの暴走検出方式

Publications (2)

Publication Number Publication Date
JPS59209091A JPS59209091A (ja) 1984-11-27
JPH0121709B2 true JPH0121709B2 (en]) 1989-04-21

Family

ID=13041222

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58056930A Granted JPS59209091A (ja) 1983-04-01 1983-04-01 モ−タの暴走検出方式

Country Status (1)

Country Link
JP (1) JPS59209091A (en])

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61191284A (ja) * 1985-02-19 1986-08-25 Seiko Epson Corp モ−タの過負荷状態検出方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5651668A (en) * 1979-10-04 1981-05-09 High Frequency Heattreat Co Ltd Detecting method for abnormal rotational speed of rotator

Also Published As

Publication number Publication date
JPS59209091A (ja) 1984-11-27

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