JPH0368070U - - Google Patents
Info
- Publication number
- JPH0368070U JPH0368070U JP12954089U JP12954089U JPH0368070U JP H0368070 U JPH0368070 U JP H0368070U JP 12954089 U JP12954089 U JP 12954089U JP 12954089 U JP12954089 U JP 12954089U JP H0368070 U JPH0368070 U JP H0368070U
- Authority
- JP
- Japan
- Prior art keywords
- rotational speed
- detection circuit
- detects
- rotating body
- abnormal
- 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 8
- 230000002159 abnormal effect Effects 0.000 claims description 5
- 230000005856 abnormality Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Control Of Electric Motors In General (AREA)
Description
第１図は本考案に係る回転速度スイツチの外観
斜視図、第２図はその制御部のブロツク図、第３
図は回転速度スイツチの使用状態を示す側面図、
第４図は回転速度と信号との関係を示す特性図で
ある。
１……スイツチ本体、２……近接センサ部、３
……制御部、８……基準回転表示ランプ、９……
検出動作表示ランプ、１０……回転速度設定部、
２０……回転速度検出回路、２４……設定値検出
回路、２５……第１の異常回転速度検出回路、２
６……第２の異常回転速度検出回路、３３……第
１の異常信号出力回路、３４……第２の異常信号
出力回路。
Fig. 1 is an external perspective view of the rotation speed switch according to the present invention, Fig. 2 is a block diagram of its control section, and Fig. 3 is a block diagram of the control section thereof.
The figure is a side view showing how the rotation speed switch is used.
FIG. 4 is a characteristic diagram showing the relationship between rotation speed and signal. 1...Switch body, 2...Proximity sensor section, 3
...Control unit, 8...Reference rotation display lamp, 9...
Detection operation display lamp, 10...Rotation speed setting section,
20... Rotation speed detection circuit, 24... Set value detection circuit, 25... First abnormal rotation speed detection circuit, 2
6... Second abnormal rotational speed detection circuit, 33... First abnormal signal output circuit, 34... Second abnormal signal output circuit.
Claims (1)
と、前記回転体の基準回転速度を設定する回転速
度設定部と、前記基準回転速度に対する所定比率
の限界回転速度を求め、求めた限界回転速度と前
記回転速度検出回路が検出した回転速度とを比較
して回転速度の異常を検出する異常速度検出回路
とを備えることを特徴とする回転速度スイツチ。 a rotational speed detection circuit that detects the rotational speed of the rotating body; a rotational speed setting unit that sets a reference rotational speed of the rotating body; a rotational speed limit that is a predetermined ratio to the reference rotational speed; A rotational speed switch comprising: an abnormal speed detection circuit that detects an abnormality in the rotational speed by comparing the rotational speed detected by the rotational speed detection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12954089U JPH0368070U (en) | 1989-11-06 | 1989-11-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12954089U JPH0368070U (en) | 1989-11-06 | 1989-11-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0368070U true JPH0368070U (en) | 1991-07-03 |
Family
ID=31677162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12954089U Pending JPH0368070U (en) | 1989-11-06 | 1989-11-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0368070U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61104262A (en) * | 1984-10-26 | 1986-05-22 | Mitsubishi Electric Corp | Automatic inspection apparatus of number-of-rotation detection apparatus |
-
1989
- 1989-11-06 JP JP12954089U patent/JPH0368070U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61104262A (en) * | 1984-10-26 | 1986-05-22 | Mitsubishi Electric Corp | Automatic inspection apparatus of number-of-rotation detection apparatus |