JPS5495439A - Protector for motor of elevator - Google Patents
Protector for motor of elevatorInfo
- 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
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
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)
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 |
-
1978
- 1978-01-12 JP JP213078A patent/JPS5495439A/en active Pending
Cited By (2)
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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