JPS5249552A - Trouble detecting system for excess-speed detecting apparatus which is used in elevator equipment - Google Patents

Trouble detecting system for excess-speed detecting apparatus which is used in elevator equipment

Info

Publication number
JPS5249552A
JPS5249552A JP12434175A JP12434175A JPS5249552A JP S5249552 A JPS5249552 A JP S5249552A JP 12434175 A JP12434175 A JP 12434175A JP 12434175 A JP12434175 A JP 12434175A JP S5249552 A JPS5249552 A JP S5249552A
Authority
JP
Japan
Prior art keywords
trouble
excess
speed detecting
elevator equipment
detecting apparatus
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
JP12434175A
Other languages
Japanese (ja)
Inventor
Yasuki Eguchi
Kazuhiro Sakata
Takeo Yuminaka
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP12434175A priority Critical patent/JPS5249552A/en
Publication of JPS5249552A publication Critical patent/JPS5249552A/en
Pending legal-status Critical Current

Links

Landscapes

  • Maintenance And Inspection Apparatuses For Elevators (AREA)

Abstract

PURPOSE: To provide a trouble detecting system for excess speed detecting apparatus, in which it is judged that there is trouble with actual speed detecting unit when the terminal voltage across a driving DC motor exceeds the output of the acutal speed detecting unit by more than a predetermined value, thereby enabling trouble to be promptly detected.
COPYRIGHT: (C)1977,JPO&Japio
JP12434175A 1975-10-17 1975-10-17 Trouble detecting system for excess-speed detecting apparatus which is used in elevator equipment Pending JPS5249552A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12434175A JPS5249552A (en) 1975-10-17 1975-10-17 Trouble detecting system for excess-speed detecting apparatus which is used in elevator equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12434175A JPS5249552A (en) 1975-10-17 1975-10-17 Trouble detecting system for excess-speed detecting apparatus which is used in elevator equipment

Publications (1)

Publication Number Publication Date
JPS5249552A true JPS5249552A (en) 1977-04-20

Family

ID=14882947

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12434175A Pending JPS5249552A (en) 1975-10-17 1975-10-17 Trouble detecting system for excess-speed detecting apparatus which is used in elevator equipment

Country Status (1)

Country Link
JP (1) JPS5249552A (en)

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