JPS6013476U - Contact signal line disconnection detection circuit - Google Patents
Contact signal line disconnection detection circuitInfo
- Publication number
- JPS6013476U JPS6013476U JP10349583U JP10349583U JPS6013476U JP S6013476 U JPS6013476 U JP S6013476U JP 10349583 U JP10349583 U JP 10349583U JP 10349583 U JP10349583 U JP 10349583U JP S6013476 U JPS6013476 U JP S6013476U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- signal line
- detection circuit
- contact
- disconnection detection
- 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
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来の外部接点信号を受はリレーが動作する回
路を示す電気的接続図、第２図および第３図は本考案の
一実施例を示し、第２図は接点信号線の断線検知回路の
全体構成を示す電気的接続図、第３図は第２図における
断線検知回路の具体的構成を示す電気的接続図、第４図
ａ、 ｂ、 ｃはそれぞれ第３図の断線検知回路の
各部における信号波形図で、第４図ａは第３図の端子１
３ａに入力される電圧波形を示し、第４図すは第３図の
コンデンサ１３１の通過後の波形を示し、第４図Ｃは第
３図のダイオード１３２通過後の波形を示す。
２・・・・・・接点、３・・・・・・信号線、５・・・
・・・リレー、１０・・・・・・コンデンサ、１１・・
・電源、１２・・・・・・信号発生器、１３・・・・・
・断線検知回路、１３１・・・・・・コンデンサ、１３
２・・・・・・ダイオード、１３３・・・・・・抵抗、
１３４・・・・・・コンデンサ、１３５・・・・・・ト
ランジスタ、１３６・・・・・・検知リレー、１３７・
・・・・・常開接点。Fig. 1 is an electrical connection diagram showing a circuit in which a relay operates in response to a conventional external contact signal, Figs. 2 and 3 show an embodiment of the present invention, and Fig. 2 shows a disconnection of a contact signal line. An electrical connection diagram showing the overall configuration of the detection circuit, Figure 3 is an electrical connection diagram showing the specific configuration of the disconnection detection circuit in Figure 2, and Figures 4a, b, and c respectively show the disconnection detection in Figure 3. Figure 4a is a signal waveform diagram at each part of the circuit.
3a, FIG. 4C shows the waveform after passing through the capacitor 131 of FIG. 3, and FIG. 4C shows the waveform after passing through the diode 132 of FIG. 3. 2...Contact, 3...Signal line, 5...
...Relay, 10...Capacitor, 11...
・Power supply, 12... Signal generator, 13...
・Disconnection detection circuit, 131...Capacitor, 13
2...Diode, 133...Resistor,
134...Capacitor, 135...Transistor, 136...Detection relay, 137...
...Normally open contact.
Claims (1)
状態を表わす信号を出力するリレーと、このリレーを動
作させる電源と、前記コンデンサをパスする高い周波数
帯域であり且つ前記電源電圧レベルより低電圧レベルの
信号を発生する信号発生器と、前記接点、リレー、電源
の出力、信号発生器の出力を直列に接続してなる信号線
と、前記電源および前記信号線に接続され前記接点およ
びコンデンサの並列回路を介した前記信号発生器の出力
信号を検出して、接点オフか信号線の断線かを区別した
信用を出力する断線検知回路とを具備してなる接点信号
線の断線検知回路。A capacitor connected in parallel to an external contact, a relay that outputs a signal representing the contact state, a power source that operates this relay, and a voltage that is in a high frequency band and that is lower than the power supply voltage level that passes through the capacitor. a signal generator that generates a level signal; a signal line that connects the contact, the relay, the output of the power source, and the output of the signal generator in series; A disconnection detection circuit for a contact signal line, comprising: a disconnection detection circuit that detects the output signal of the signal generator via a parallel circuit and outputs a signal that distinguishes whether the contact is off or the signal line is disconnected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10349583U JPS6013476U (en) | 1983-07-05 | 1983-07-05 | Contact signal line disconnection detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10349583U JPS6013476U (en) | 1983-07-05 | 1983-07-05 | Contact signal line disconnection detection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6013476U true JPS6013476U (en) | 1985-01-29 |
Family
ID=30243450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10349583U Pending JPS6013476U (en) | 1983-07-05 | 1983-07-05 | Contact signal line disconnection detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6013476U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018155515A (en) * | 2017-03-15 | 2018-10-04 | ヤマハ株式会社 | Disconnection detection apparatus, signal processor and disconnection detection method |
| JP2019152590A (en) * | 2018-03-06 | 2019-09-12 | ヒースト株式会社 | Switch disconnection detector |
-
1983
- 1983-07-05 JP JP10349583U patent/JPS6013476U/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018155515A (en) * | 2017-03-15 | 2018-10-04 | ヤマハ株式会社 | Disconnection detection apparatus, signal processor and disconnection detection method |
| JP2019152590A (en) * | 2018-03-06 | 2019-09-12 | ヒースト株式会社 | Switch disconnection detector |
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