JPH0321993U - - Google Patents
Info
- Publication number
- JPH0321993U JPH0321993U JP8322989U JP8322989U JPH0321993U JP H0321993 U JPH0321993 U JP H0321993U JP 8322989 U JP8322989 U JP 8322989U JP 8322989 U JP8322989 U JP 8322989U JP H0321993 U JPH0321993 U JP H0321993U
- Authority
- JP
- Japan
- Prior art keywords
- motor
- transistor
- comparator
- signal
- potential
- 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
- 238000001514 detection method Methods 0.000 claims description 3
- 230000005856 abnormality Effects 0.000 claims description 2
- 230000002159 abnormal effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
Landscapes
- Stopping Of Electric Motors (AREA)
Description
第１図は本考案異常検出装置の一実施例を示す
回路図、第２図はモータ速度とコンパレータ８の
出力信号との関係を示す速度波形図及びタイムチ
ヤート、第３図は検出ルーチンを示すフローチヤ
ートである。
図において、１……整流スタツク、２……チヨ
ークコイル、３……コンデンサ、４……抵抗、５
……トランジスタ、６……インバータ、７……高
周波モータ、８……コンパレータ、９……ＣＰＵ
、１０、１１……ドライバである。
Fig. 1 is a circuit diagram showing an embodiment of the abnormality detection device of the present invention, Fig. 2 is a speed waveform diagram and time chart showing the relationship between the motor speed and the output signal of the comparator 8, and Fig. 3 is a detection routine. It is a flowchart. In the figure, 1... rectifier stack, 2... chain coil, 3... capacitor, 4... resistor, 5
...Transistor, 6...Inverter, 7...High frequency motor, 8...Comparator, 9...CPU
, 10, 11... drivers.
Claims (1)
該モータの制動時に制動電流を流すための抵抗及
びパワートランジスタの直列回路と、制動時に該
トランジスタに所定周期でターンオンさせる信号
を発生する制御手段とを備えた遠心機用モータに
おいて、 前記トランジスタのコレクタ電位を検出して所
定電位か否かを判断する比較器を設け、該比較器
の出力信号の発生周期が所定値以上の時異常信号
を発生するようにしたことを特徴とする遠心機用
モータ駆動回路の異常検出装置。[Claims for Utility Model Registration] A high-frequency motor driven by an inverter,
A centrifugal motor comprising a series circuit of a resistor and a power transistor for flowing a braking current during braking of the motor, and a control means for generating a signal to turn on the transistor at a predetermined period during braking, comprising: a collector of the transistor; A motor for a centrifuge, characterized in that it is provided with a comparator that detects a potential and determines whether it is at a predetermined potential, and generates an abnormal signal when the generation cycle of the output signal of the comparator is equal to or greater than a predetermined value. Drive circuit abnormality detection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8322989U JPH0321993U (en) | 1989-07-14 | 1989-07-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8322989U JPH0321993U (en) | 1989-07-14 | 1989-07-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0321993U true JPH0321993U (en) | 1991-03-06 |
Family
ID=31630721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8322989U Pending JPH0321993U (en) | 1989-07-14 | 1989-07-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0321993U (en) |
-
1989
- 1989-07-14 JP JP8322989U patent/JPH0321993U/ja active Pending
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