JPS6474080A - Abnormality detector of regenerative power absorption circuit - Google Patents
Abnormality detector of regenerative power absorption circuitInfo
- Publication number
- JPS6474080A JPS6474080A JP22946387A JP22946387A JPS6474080A JP S6474080 A JPS6474080 A JP S6474080A JP 22946387 A JP22946387 A JP 22946387A JP 22946387 A JP22946387 A JP 22946387A JP S6474080 A JPS6474080 A JP S6474080A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- regenerative power
- power absorption
- set point
- constituted
- 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
Landscapes
- Stopping Of Electric Motors (AREA)
- Protection Of Static Devices (AREA)
Abstract
PURPOSE:To make it most suitable to carry out abnormality treatment by outputting an abnormality detection signal when a continuity state of a regenerative power absorption resistor reaches the time in excess of a set point. CONSTITUTION:An invertor is constituted of a rectifier circuit 2 of 3 phase AC power voltage, a DC power circuit 6 of a smoothing condenser 5 and an invertor main circuit 7, and the specified 3 phase AC power is supplied to a load induction motor 8. And, a state detection circuit 20 constituted of a regenerative power absorption resistor 9, a regenerative power absorption circuit 11 of a switching element (Tr) 10, a regenerative power absorption control circuit 12, a photo coupler 13 and etc., a timer circuit 21, a set point setting 22, an extraordinary stop circuit 23 and an alarm equipment 24 such as a buzzer, etc., are provided. Accordingly, the timer circuit 21 is reset before attaining a set point in case of normal time, but a counting operation of the timer circuit 21 reaches a set point in case of abnormal time and an abnormality detection signal is outputted.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22946387A JPS6474080A (en) | 1987-09-16 | 1987-09-16 | Abnormality detector of regenerative power absorption circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22946387A JPS6474080A (en) | 1987-09-16 | 1987-09-16 | Abnormality detector of regenerative power absorption circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6474080A true JPS6474080A (en) | 1989-03-20 |
Family
ID=16892592
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP22946387A Pending JPS6474080A (en) | 1987-09-16 | 1987-09-16 | Abnormality detector of regenerative power absorption circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6474080A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010233414A (en) * | 2009-03-30 | 2010-10-14 | Panasonic Corp | Motor control device |
-
1987
- 1987-09-16 JP JP22946387A patent/JPS6474080A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010233414A (en) * | 2009-03-30 | 2010-10-14 | Panasonic Corp | Motor control device |
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