JPS5495439A - Protector for motor of elevator - Google Patents

Protector for motor of elevator

Info

Publication number
JPS5495439A
JPS5495439A JP213078A JP213078A JPS5495439A JP S5495439 A JPS5495439 A JP S5495439A JP 213078 A JP213078 A JP 213078A JP 213078 A JP213078 A JP 213078A JP S5495439 A JPS5495439 A JP S5495439A
Authority
JP
Japan
Prior art keywords
output
converter
armature
motor
clock signal
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
JP213078A
Other languages
Japanese (ja)
Inventor
Keiichi Kusunoki
Naruhiro Terasono
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP213078A priority Critical patent/JPS5495439A/en
Publication of JPS5495439A publication Critical patent/JPS5495439A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To prevent a compact light-weight motor from overheating even if it is used under tough conditions, by integrating the current of the armature of the DC motor and controlling the operation of the armature when the integrated value exceeds a predetermined level.
CONSTITUTION: The current flowing through the armature 3 of the DC motor for driving an elevator gondola is detected by a current detector 5, the output of which is converted into a digital value by an A/D converter 7. An updown counter 9 integrates the output of the converter 7 and a clock signal 8. When the integrated value of the output of the converter exceeds that of the clock signal 8, the counter 9 generates an output. The integrated value of the clock signal 8 is caused to correspond to that of the output of the converter, which corresponds to the time when the armature 3 overheats to the vicinity of the insulation limit. After the output is changed into an analogue value by a D/A converter 10, an operation control relay 11 is energized.
COPYRIGHT: (C)1979,JPO&Japio
JP213078A 1978-01-12 1978-01-12 Protector for motor of elevator Pending JPS5495439A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP213078A JPS5495439A (en) 1978-01-12 1978-01-12 Protector for motor of elevator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP213078A JPS5495439A (en) 1978-01-12 1978-01-12 Protector for motor of elevator

Publications (1)

Publication Number Publication Date
JPS5495439A true JPS5495439A (en) 1979-07-27

Family

ID=11520751

Family Applications (1)

Application Number Title Priority Date Filing Date
JP213078A Pending JPS5495439A (en) 1978-01-12 1978-01-12 Protector for motor of elevator

Country Status (1)

Country Link
JP (1) JPS5495439A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60183476A (en) * 1984-02-29 1985-09-18 三菱電機株式会社 Speed controller for elevator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60183476A (en) * 1984-02-29 1985-09-18 三菱電機株式会社 Speed controller for elevator
JPH0419156B2 (en) * 1984-02-29 1992-03-30 Mitsubishi Electric Corp

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