JPH0383439U - - Google Patents
Info
- Publication number
- JPH0383439U JPH0383439U JP14224789U JP14224789U JPH0383439U JP H0383439 U JPH0383439 U JP H0383439U JP 14224789 U JP14224789 U JP 14224789U JP 14224789 U JP14224789 U JP 14224789U JP H0383439 U JPH0383439 U JP H0383439U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- relay
- potential
- load
- exclusive
- 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
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims 3
- 230000007257 malfunction Effects 0.000 claims 3
- 238000004804 winding Methods 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Protection Of Static Devices (AREA)
- Relay Circuits (AREA)
Description
第１図は本考案一実施例ブロツク図。第２図は
従来例ブロツク図。
１，２，３……リレー、４……負荷、５，６…
…変換回路、７……排他的論理和回路、８……遅
延回路、９……フリツプフロツプ、１０……警報
回路。
FIG. 1 is a block diagram of one embodiment of the present invention. FIG. 2 is a block diagram of a conventional example. 1, 2, 3...Relay, 4...Load, 5,6...
...Conversion circuit, 7...Exclusive OR circuit, 8...Delay circuit, 9...Flip-flop, 10...Alarm circuit.
Claims (1)
および開閉スイツチと直列に接続され、このリレ
ー巻線により駆動される接点により前記電源から
負荷に供給される電流が開閉制御される回路のリ
レーの動作不良検出回路において、 前記負荷に印加される電位を論理回路に適する
極性および電位に変換する第一変換回路と、 前記リレー巻線に印加される電位を論理回路に
適する極性および電位に変換する第二変換回路と
、 前記第一変換回路および前記第二変換回路の各
出力を入力とする排他的論理和回路と、 この排他的論理和回路の出力論理値にしたがつ
て前記リレー巻線の電位と前記負荷の電位が不一
致であるときに閉成されるスイツチ回路と、 このスイツチ回路を通過する電流により付勢さ
れ前記被検出対象となるリレーの接点を介して前
記負荷に供給する電流を遮断する遮断用リレーと
、 この遮断用リレーのメイク接点に接続された警
報回路と を備えたことを特徴とするリレーの動作不良検出
回路。 ２ 前記排他的論理和回路の出力回路に設けられ
前記リレーの動作時間に相応する遅延を与える遅
延回路を含む請求項１記載のリレーの動作不良検
出回路。[Claims for Utility Model Registration] 1. The relay winding of the relay to be detected is connected in series with a power source and an on/off switch, and the current supplied from the power source to the load is caused by the contacts driven by the relay winding. A malfunction detection circuit for a relay in a circuit whose opening/closing is controlled includes a first conversion circuit that converts a potential applied to the load into a polarity and potential suitable for a logic circuit; a second conversion circuit that converts the polarity and potential into a suitable polarity and potential; an exclusive OR circuit that receives each output of the first conversion circuit and the second conversion circuit as input; and an output logical value of the exclusive OR circuit. Therefore, through a switch circuit that is closed when the potential of the relay winding and the potential of the load do not match, and a contact of the relay to be detected that is energized by the current passing through this switch circuit, A malfunction detection circuit for a relay, comprising: a cutoff relay that cuts off the current supplied to the load; and an alarm circuit connected to a make contact of the cutoff relay. 2. The relay malfunction detection circuit according to claim 1, further comprising a delay circuit provided in the output circuit of the exclusive OR circuit and providing a delay corresponding to the operating time of the relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14224789U JPH0383439U (en) | 1989-12-08 | 1989-12-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14224789U JPH0383439U (en) | 1989-12-08 | 1989-12-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0383439U true JPH0383439U (en) | 1991-08-26 |
Family
ID=31689085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14224789U Pending JPH0383439U (en) | 1989-12-08 | 1989-12-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0383439U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5611450B2 (en) * | 1977-03-04 | 1981-03-14 |
-
1989
- 1989-12-08 JP JP14224789U patent/JPH0383439U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5611450B2 (en) * | 1977-03-04 | 1981-03-14 |