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
- Protection Of Static Devices (AREA)
- Stopping Of Electric Motors (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 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE3168465D1 (en) | A.c. electricity power supply system and methods of and apparatus for load control thereon | |
JPS6474080A (en) | Abnormality detector of regenerative power absorption circuit | |
JPS6412813A (en) | Power device for dc stabilization | |
JPS5725002A (en) | Contol device using microcomputer | |
JPS5388115A (en) | Controller for alternating current motors | |
JPS5656182A (en) | Drive unit for motor | |
JPS55115119A (en) | Stop and start system of microprocessor | |
JPS57153570A (en) | Constant-voltage and constant-frequency power source | |
JPS5445741A (en) | Control system of inverter | |
JPS5488736A (en) | Voltage detector for battery | |
JPS57211982A (en) | Self-excited inverter device | |
JPS55127885A (en) | Method for detecting missing phase in output of three- phase inverter | |
JPS59116560A (en) | Loose screw detector for energization terminal of electric appliance | |
SU794556A1 (en) | Voltage monitoring device | |
JPS6412824A (en) | Output variation system for inverse voltage detection of dispersed power source | |
JPS5568733A (en) | Program timer with overcurrent control unit | |
JPS55138118A (en) | Fault diagnosing method of controller for electric power converter | |
JPS55164913A (en) | Protection control unit for semiconductor device | |
JPS5347925A (en) | Inverter overvoltage protection system | |
JPS54120841A (en) | Ac power unit | |
JPS55103077A (en) | Power converter | |
JPS56121380A (en) | Stop controlling device of motor | |
JPS57139673A (en) | Detection circuit for direct current | |
JPS5532134A (en) | Control system for power converter | |
JPS52146831A (en) | Commutation capacitor voltage detecting circuit for current type inverter |