JPH06103872A - Electromagnetic relay and its contact failure sensing method - Google Patents
Electromagnetic relay and its contact failure sensing methodInfo
- Publication number
- JPH06103872A JPH06103872A JP4248447A JP24844792A JPH06103872A JP H06103872 A JPH06103872 A JP H06103872A JP 4248447 A JP4248447 A JP 4248447A JP 24844792 A JP24844792 A JP 24844792A JP H06103872 A JPH06103872 A JP H06103872A
- Authority
- JP
- Japan
- Prior art keywords
- contact
- electromagnetic relay
- coil
- light emitting
- load
- 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.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/002—Monitoring or fail-safe circuits
Landscapes
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、工場のＦＡ(Factory-A
utomation)化のためのリレーシーケンス技術などに用い
られる電磁継電器の接点異常検出方法、及びその検出に
好適な電磁継電器に関する。The present invention relates to factory FA (Factory-A
The present invention relates to a contact abnormality detection method for an electromagnetic relay used in a relay sequence technology for automation, and an electromagnetic relay suitable for the detection.
【０００２】[0002]
【従来の技術】上述のリレーシーケンス技術では、接点
により負荷回路を開閉する電磁継電器を使用することが
多い。電磁継電器は、コイルを駆動する（コイルに通電
する）ことによって接点が機械的に開閉するものであ
り、公称の寿命に達する前に、接点接触部に発生する熱
により接点が焼失や溶着を起こして開閉不能になる場合
がある。この接点異常を起こすと、このシーケンス技術
で制御される装置（システム）は動作に異常を来す。2. Description of the Related Art In the above-mentioned relay sequence technology, an electromagnetic relay which opens and closes a load circuit by a contact is often used. An electromagnetic relay mechanically opens and closes the contacts by driving the coil (energizing the coil) .Because of the heat generated in the contact parts, the contacts burn out or melt before the nominal life is reached. May not be able to open and close. When this contact abnormality occurs, the device (system) controlled by this sequence technology will have an abnormal operation.
【０００３】いうまでもなく、上記装置が起こす動作異
常の原因は、上記接点の異常のみではない。装置が動作
異常を起こした際には、作業者が各部を点検して原因を
突き止め対策を講ずるが、その原因が電磁継電器の接点
異常である場合は、電磁継電器を駆動する回路を作動さ
せて負荷の動作異常を見つけても、接点の目視による確
認が困難なため負荷の異常なのか電磁継電器の異常なの
かの見定めが付かず、原因発見までに多大な時間を要し
ていた。このことは、上記装置の稼働率を低下させる結
果を招いている。Needless to say, the cause of the abnormal operation of the device is not limited to the abnormal contact. When a device malfunctions, the operator inspects each part to find out the cause and take measures.If the cause is a contact fault of the electromagnetic relay, activate the circuit that drives the electromagnetic relay. Even if an abnormal operation of the load was found, it was difficult to visually confirm the contact, so it was not possible to determine whether it was an abnormal load or an electromagnetic relay, and it took a long time to find the cause. This results in a decrease in the operating rate of the device.
【０００４】ところで、電磁継電器の中にはコイルに並
列接続する発光素子（具体的にはＬＥＤ）を内蔵したも
のがある。これを用いると、それを駆動する回路の作動
に対する電磁継電器の応答の適否が発光素子の点灯有無
により即座に判るので、電磁継電器の駆動と負荷の動作
との対応は見やすくなる。しかしながら、上記発光素子
の点灯により判る内容は、電磁継電器のコイルが駆動さ
れているか否かであり、コイルの駆動に対応して接点が
開閉しているか否かは判らないので、接点異常の場合の
上記原因発見に対してそれ程大きな助けとはなっていな
い。By the way, some electromagnetic relays have a built-in light emitting element (specifically, LED) connected in parallel with the coil. When this is used, the suitability of the response of the electromagnetic relay to the operation of the circuit that drives the electromagnetic relay can be immediately known by the presence or absence of lighting of the light emitting element, so that the correspondence between the driving of the electromagnetic relay and the operation of the load can be easily seen. However, what is known from the lighting of the light emitting element is whether or not the coil of the electromagnetic relay is driven, and it is not known whether or not the contact is opened / closed in response to the driving of the coil. It does not help that much for finding the above causes.
【０００５】[0005]
【発明が解決しようとする課題】このため、負荷接続す
る接点がコイルの駆動に対応して間違いなく開閉してい
ることを確認できれば極めて具合がよくなる。Therefore, if it can be confirmed that the contacts to be connected to the load are surely opened and closed in response to the driving of the coil, it will be very good.
【０００６】そこで本発明は、電磁継電器に関し、負荷
接続する接点がコイルの駆動に対応した開閉を行ってい
るか否かを確認する接点異常検出方法、及びその検出に
好適な電磁継電器の提供を目的とする。Therefore, the present invention relates to an electromagnetic relay, and an object of the present invention is to provide a contact abnormality detecting method for confirming whether or not a contact connected to a load is opened / closed corresponding to driving of a coil, and an electromagnetic relay suitable for the detection. And
【０００７】[0007]
【課題を解決するための手段】上記目的を達成するため
に、本発明による電磁継電器の接点異常検出方法は、電
磁継電器のコイルに並列接続する第１発光素子と、該電
磁継電器の接点の負荷に並列接続する第２発光素子とを
設け、該第１及び第２発光素子の点灯有無の状態を照合
して該接点の異常を検出することを特徴とし、または、
電磁継電器のコイルの駆動有無を示す信号と、該電磁継
電器の負荷接続した接点の通電有無を示す信号とを、該
駆動有無の切り換え時から所定時間後の時点に照合し
て、該接点の異常を検出することを特徴としている。In order to achieve the above object, a method of detecting an abnormality in a contact of an electromagnetic relay according to the present invention comprises a first light emitting element connected in parallel with a coil of the electromagnetic relay, and a load on the contact of the electromagnetic relay. A second light emitting element connected in parallel with the first light emitting element and detecting the abnormality of the contact by collating the lighting states of the first and second light emitting elements.
The signal indicating whether or not the coil of the electromagnetic relay is driven and the signal indicating whether or not the load-connected contact of the electromagnetic relay is energized are collated at a time point a predetermined time after the switching of the driving or not, and the contact is abnormal. It is characterized by detecting.
【０００８】そして、電磁継電器は、前記接点異常検出
方法の前者に対するものであり、コイル及び接点と共に
前記第１及び第２発光素子を組み込んであることを特徴
としている。The electromagnetic relay corresponds to the former of the contact abnormality detecting method, and is characterized by incorporating the first and second light emitting elements together with the coil and the contact.
【０００９】[0009]
【作用】接点異常は先に述べたように接点が焼失や溶着
により開閉不能となるものであり、その際は接点が常時
開または常時閉の状態となる。このことから、上記第１
及び第２発光素子の点灯状態を照合する接点異常検出方
法では、接点がメーク接点の場合には両発光素子の一方
が点灯で他方が不点灯であることにより接点異常を検出
することができ、接点がブレーク接点の場合には両発光
素子が共に点灯または不点灯であることにより接点異常
を検出することができる。The function of the contact is that the contact cannot be opened or closed due to burning or welding as described above, and the contact is normally open or normally closed. From this, the first
In the contact abnormality detection method for checking the lighting state of the second light emitting element, when the contact is a make contact, one of both light emitting elements is lit and the other is not lit, so that the contact abnormality can be detected. When the contact is a break contact, both the light emitting elements are both lit or unlit, so that the contact abnormality can be detected.
【００１０】また、上記二つの信号を照合する接点異常
検出方法では、接点がメーク接点の場合には両発光素子
の一方が点灯で他方が不点灯であることにより接点異常
を検出することができ、接点がブレーク接点の場合には
両発光素子が共に点灯または不点灯であることにより接
点異常を検出することができる。Further, in the contact abnormality detecting method for comparing the above two signals, when the contact is a make contact, one of both light emitting elements is lit and the other is not lit, so that the contact abnormality can be detected. If the contact is a break contact, it is possible to detect a contact abnormality because both light emitting elements are both lit or not lit.
【００１１】そして上記電磁継電器は、上記第１及び第
２発光素子を組み込んであるので両発光素子の点灯状態
の照合に便利であり、その照合を行う上記接点異常検出
方法に対して好適である。Since the electromagnetic relay incorporates the first and second light emitting elements, it is convenient for verifying the lighting states of both light emitting elements and is suitable for the contact abnormality detecting method for performing the verification. .
【００１２】[0012]
【実施例】以下本発明の実施例について図１〜図３を用
いて説明する。図１は接点異常検出方法の実施例１の回
路図（ａ）と実施例２の回路図（ｂ）、図２は図１の実
施例１のタイミングチャート（ａ）と実施例２のタイミ
ングチャート（ｂ）、図３は図１の実施例１のための電
磁継電器の実施例の構成図、図４は図１の実施例２にお
ける接点異常検出のフローチャート、であり、全図を通
し同一符号は同一対象物を示す。Embodiments of the present invention will be described below with reference to FIGS. FIG. 1 is a circuit diagram (a) of the first embodiment of the contact abnormality detection method and a circuit diagram (b) of the second embodiment. FIG. 2 is a timing chart (a) of the first embodiment and a timing chart of the second embodiment of FIG. (B), FIG. 3 is a configuration diagram of an embodiment of the electromagnetic relay for the first embodiment of FIG. 1, and FIG. 4 is a flowchart of contact abnormality detection in the second embodiment of FIG. Indicates the same object.
【００１３】図１（ａ）において、１は電磁継電器のコ
イル、２は同じく接点（ここではメーク接点）、３は接
点２の負荷、４はコイル１に並列接続した発光素子（前
述の第１発光素子）、５は負荷３に並列接続した発光素
子（前述の第１発光素子）である。In FIG. 1A, 1 is a coil of an electromagnetic relay, 2 is a contact (here, a make contact), 3 is a load of a contact 2, and 4 is a light emitting element connected in parallel with the coil 1 (the above-mentioned first contact). Light emitting elements) and 5 are light emitting elements (first light emitting element described above) connected in parallel to the load 3.
【００１４】シーケンサＰＣよりアドレス００の出力を
ＯＮすることによりコイル１に電圧印加し、コイル１が
励磁されると共に発光素子４が点灯する。コイル１の励
磁により接点２が閉じると、負荷３が通電されると共に
発光素子５が点灯する。また、シーケンサＰＣよりアド
レス００の出力をＯＦＦすることによりコイル１の電圧
印加がなくなり、コイル１が励磁なしにされると共に発
光素子４が消灯する。コイル１の励磁消失により接点２
が開くと、負荷３が通電なしにされると共に発光素子５
が消灯する。発光素子４及び５はＬＥＤであり、それぞ
れの電流は抵抗６または７によって適正にされる。By turning on the output of address 00 from the sequencer PC, a voltage is applied to the coil 1, the coil 1 is excited, and the light emitting element 4 is turned on. When the contact 2 is closed by exciting the coil 1, the load 3 is energized and the light emitting element 5 is turned on. Further, by turning off the output of the address 00 from the sequencer PC, the voltage application to the coil 1 is stopped, the coil 1 is deenergized, and the light emitting element 4 is turned off. Contact 2 due to loss of excitation of coil 1
Is opened, the load 3 is de-energized and the light emitting element 5
Turns off. The light emitting elements 4 and 5 are LEDs, the respective currents of which are made appropriate by the resistors 6 or 7.
【００１５】発光素子４と５の点灯（ＯＮ）と消灯（Ｏ
ＦＦ）のタイミングは図２（ａ）に示される。電磁継電
器は、コイル１を励磁してから接点２が閉じるまで動作
時間Ｔo を要し、コイル１の励磁を止めてから接点２が
開くまで復旧時間Ｔr を要するので、発光素子５の点灯
は発光素子４の点灯より動作時間Ｔo だけ遅れ、同じく
消灯は復旧時間Ｔr だけ遅れる。動作時間Ｔo 及び復旧
時間Ｔr はそれぞれが１０〜３０ｍｓ程度である。The light emitting elements 4 and 5 are turned on (ON) and turned off (O).
The timing of FF) is shown in FIG. Since the electromagnetic relay requires an operating time T o from the excitation of the coil 1 to the closing of the contact 2 and the recovery time T r from the stop of the excitation of the coil 1 to the opening of the contact 2, the light emitting element 5 is turned on. Is delayed from the lighting of the light emitting element 4 by the operation time T o , and likewise is turned off from the light emitting element 4 by the recovery time T r . The operating time T o and the recovery time T r are each about 10 to 30 ms.
【００１６】以上は接点２が接点異常を起こさずに正常
に開閉する場合である。若し接点異常が起きれば、接点
２はコイル１の励磁有無にかかわらず常時開または常時
閉となり、発光素子５は常に消灯（常時ＯＦＦ）または
常に点灯（常時ＯＮ）となるので、発光素子４と５のＯ
ＮとＯＦＦの関係が図２（ａ）とは全く異なった形態に
なる。従って発光素子４と５の点灯有無の状態を目視で
照合することにより接点異常を検出することができる。
このことにより、先に述べた装置の動作異常の原因探索
の際に、負荷の異常か電磁継電器の異常かの見定めが簡
単になり、原因発見を短時間で行うことができるように
なる。The above is the case where the contact 2 normally opens and closes without causing contact abnormality. If a contact abnormality occurs, the contact 2 is normally opened or closed regardless of whether the coil 1 is excited or not, and the light emitting element 5 is always off (always OFF) or always on (always ON). And O of 5
The relationship between N and OFF is completely different from that shown in FIG. Therefore, the contact abnormality can be detected by visually comparing the light emitting elements 4 and 5 with or without lighting.
As a result, when searching for the cause of the above-described operation abnormality of the device, it becomes easy to determine whether the load is abnormal or the electromagnetic relay is abnormal, and the cause can be found in a short time.
【００１７】発光素子４と５の点灯状態を照合するため
には、両発光素子４，５が互いに近い位置にあるのが望
ましい。図３の構成図で示した電磁継電器の実施例は、
その条件を満たすものである。即ち、この電磁継電器
は、コイル１及び接点２と共に発光素子４と抵抗６と発
光素子７を組み込み、発光素子５のための端子８を設け
たものである。発光素子５と直列接続する抵抗７を組み
込まないのは、負荷３の電源電圧を任意にすることがで
きるようにしたためであり、その電源電圧が予め定まっ
ているならば抵抗７も組み込んだ方が良い。抵抗６を組
み込んであるのはコイル１に印加する電圧が予め定まっ
ているからである。そして、電磁継電器がケースを有す
るものならば、発光素子４と５はそのケースの上面に配
置するのが良い。In order to check the lighting states of the light emitting elements 4 and 5, it is desirable that both the light emitting elements 4 and 5 are close to each other. The embodiment of the electromagnetic relay shown in the configuration diagram of FIG.
It satisfies the condition. That is, this electromagnetic relay incorporates the coil 1, the contact 2, the light emitting element 4, the resistor 6 and the light emitting element 7, and is provided with the terminal 8 for the light emitting element 5. The reason why the resistor 7 connected in series with the light emitting element 5 is not incorporated is that the power source voltage of the load 3 can be set arbitrarily. If the power source voltage is predetermined, it is better to incorporate the resistor 7 as well. good. The resistor 6 is incorporated because the voltage applied to the coil 1 is predetermined. If the electromagnetic relay has a case, the light emitting elements 4 and 5 are preferably arranged on the upper surface of the case.
【００１８】若し、図３で述べた電磁継電器を使用しな
い場合は、発光素子４と５を当該装置の制御パネルに並
べて配置するようにすると便利である。特に多数の電磁
継電器を使用する場合は、制御パネルを見るだけでどの
電磁継電器が接点異常を起こしているかが一目瞭然であ
る。この点に関しては、図３で述べた電磁継電器を使用
する場合であっても、各電磁継電器を継電器パネルに集
合配置することにより同様になる。If the electromagnetic relay described in FIG. 3 is not used, it is convenient to arrange the light emitting elements 4 and 5 side by side on the control panel of the device. Especially when using a large number of electromagnetic relays, it is clear at a glance which electromagnetic relay is causing the contact abnormality simply by looking at the control panel. Regarding this point, even when the electromagnetic relays described in FIG. 3 are used, the same applies when the electromagnetic relays are collectively arranged in the relay panel.
【００１９】以上は、接点２がメーク接点の場合である
が、接点２がブレーク接点の場合は、発光素子５の点灯
（ＯＮ）と消灯（ＯＦＦ）の関係が逆になるのみである
ので、その点を勘案することによりメーク接点の場合と
同様にして接点異常を検出することができる。また、電
磁継電器が複数の接点を持つ場合もそれぞれの接点に関
して上述と同様にすれば良い。The above is the case where the contact 2 is a make contact, but when the contact 2 is a break contact, the relationship between lighting (ON) and extinguishing (OFF) of the light emitting element 5 is only reversed. By considering this point, the contact abnormality can be detected in the same manner as in the case of the make contact. Also, when the electromagnetic relay has a plurality of contacts, the same applies to each contact.
【００２０】次に図１（ｂ）において、この回路図で示
す実施例は、先に述べた発光素子を用いる方法とは異な
る方法で接点異常を検出するものである。即ち、シーケ
ンサＰＣよりアドレス００の出力をＯＮすることにより
コイル１に電圧印加し、コイル１が励磁されると共にそ
の信号（コイルＯＮ信号）がシーケンサＰＣに設けた検
出回路１１に送られる。コイル１の励磁により接点２
（メーク接点）が閉じると、負荷３が通電されると共
に、接点２の負荷３接続端の電圧（負荷ＯＮ信号）がシ
ーケンサＰＣのアドレス１０に印加され検出回路１１に
送られる。また、シーケンサＰＣよりアドレス００の出
力をＯＦＦすることによりコイル１の電圧印加がなくな
り、コイル１が励磁なしにされると共にその信号（コイ
ルＯＦＦ信号）がシーケンサＰＣに設けた検出回路１１
に送られる。コイル１の励磁消失により接点２が開く
と、負荷３が通電なしにされると共に、接点２の負荷３
接続端の電圧（負荷ＯＦＦ信号）がシーケンサＰＣのア
ドレス１０に印加され検出回路１１に送られる。Next, referring to FIG. 1B, the embodiment shown in this circuit diagram detects a contact abnormality by a method different from the method using the light emitting element described above. That is, by turning on the output of the address 00 from the sequencer PC, a voltage is applied to the coil 1, the coil 1 is excited, and the signal (coil ON signal) is sent to the detection circuit 11 provided in the sequencer PC. Contact 2 due to excitation of coil 1
When the (make contact) is closed, the load 3 is energized, and the voltage (load ON signal) at the load 3 connection end of the contact 2 is applied to the address 10 of the sequencer PC and sent to the detection circuit 11. Further, by turning off the output of the address 00 from the sequencer PC, the voltage application to the coil 1 is stopped, the coil 1 is de-energized, and the signal (coil OFF signal) is sent to the detection circuit 11 provided in the sequencer PC.
Sent to. When the contact 2 is opened due to the loss of excitation of the coil 1, the load 3 is de-energized and the load 3 of the contact 2 is removed.
The voltage at the connection end (load OFF signal) is applied to the address 10 of the sequencer PC and sent to the detection circuit 11.
【００２１】アドレス００のコイルＯＮ，ＯＦＦ信号と
アドレス１０の負荷ＯＮ，ＯＦＦ信号のタイミングは図
２（ｂ）に示される。これは、接点２が接点異常を起こ
さずに正常に開閉する場合であり、先の実施例で述べた
動作時間Ｔo と復旧時間Ｔrにより、負荷ＯＮ信号はコ
イルＯＮ信号より動作時間Ｔo だけ遅れ、同じくＯＦＦ
信号は復旧時間Ｔr だけ遅れる。動作時間Ｔo 及び復旧
時間Ｔr はそれぞれが１０〜３０ｍｓ程度である。The timing of the coil ON / OFF signal at address 00 and the load ON / OFF signal at address 10 is shown in FIG. 2 (b). This is the case where the contacts 2 are normally open and close without causing contact abnormality, the operating time described in the previous Example T o and recovery time T r, the load ON signal operation time than the coil ON signal T o Just off, also OFF
The signal is delayed by the recovery time T r . The operating time T o and the recovery time T r are each about 10 to 30 ms.
【００２２】検出回路１１は、アドレス００の信号レベ
ル切り換え時から所定時間後の時点に、アドレス００の
信号レベルとアドレス１０の信号レベルとを照合し、コ
イルＯＮで負荷ＯＦＦの場合、及びコイルＯＦＦで負荷
ＯＮの場合に接点異常の信号を出す。上記所定時間は、
動作時間Ｔo と復旧時間Ｔr のいずれよりも長く且つ電
磁継電器の最短動作周期より短くなるように設定し、例
えば５０ｍｓとする。これにより、コイルＯＮ，ＯＦＦ
信号と負荷ＯＮ，ＯＦＦ信号のタイミングが図２（ｂ）
のようになっている際には接点異常の信号が出ることは
ない。そして、先に述べたように接点２が接点異常を起
こして常時開となれば上記コイルＯＮの際の照合で接点
異常の信号が出され、また接点２が常時閉になれば上記
コイルＯＦＦの際の照合で接点異常の信号が出される。
この動作は図４のフローチャートに示される。このこと
により、先の実施例の場合と同じく、先に述べた装置の
動作異常の原因探索の際に、負荷の異常か電磁継電器の
異常かの見定めが簡単になり、原因発見を短時間で行う
ことができるようになる。The detection circuit 11 compares the signal level of the address 00 with the signal level of the address 10 at a predetermined time after the signal level of the address 00 is switched, and when the coil is ON and the load is OFF, and when the coil is OFF. When the load is turned on, a contact failure signal is output. The above predetermined time is
It is set so as to be longer than both the operation time T o and the recovery time T r and shorter than the shortest operation cycle of the electromagnetic relay, for example, 50 ms. This turns the coil on and off.
The timing of the signal and load ON / OFF signal is shown in Fig. 2 (b).
When it is like this, the signal of contact abnormality is not output. Then, as described above, if the contact 2 causes the contact abnormality and is normally opened, a signal of the contact abnormality is issued in the collation when the coil is turned on, and if the contact 2 is normally closed, the coil is turned off. At the time of verification, a signal of contact abnormality is issued.
This operation is shown in the flowchart of FIG. As a result, as in the case of the previous embodiment, when searching for the cause of the operation abnormality of the device described above, it becomes easy to determine whether it is a load abnormality or an electromagnetic relay abnormality, and the cause can be found in a short time. You will be able to do it.
【００２３】以上は、接点２がメーク接点の場合である
が、接点２がブレーク接点の場合は、負荷のＯＮとＯＦ
Ｆの関係が逆になるのみであるので、その点を勘案する
ことによりメーク接点の場合と同様にして接点異常を検
出することができる。また、電磁継電器が複数の接点を
持つ場合もそれぞれの接点に関して上述と同様にすれば
良い。The above is the case where the contact 2 is a make contact, but when the contact 2 is a break contact, the load is turned ON and the OF is turned off.
Since the relationship of F is only reversed, the contact abnormality can be detected in the same manner as in the case of the make contact by taking that point into consideration. Also, when the electromagnetic relay has a plurality of contacts, the same applies to each contact.
【００２４】[0024]
【発明の効果】以上説明したように本発明によれば、電
磁継電器に関し、負荷接続する接点がコイルの駆動に対
応した開閉を行っているか否かを確認する接点異常検出
方法、及びそれに好適な電磁継電器が提供されて、例え
ば、電磁継電器を用いたリレーシーケンス技術で制御さ
れる工場ＦＡ化の装置のメンテナンス性を向上させ、そ
の装置の稼働率向上を可能にさせる効果がある。As described above, according to the present invention, regarding the electromagnetic relay, a contact abnormality detecting method for confirming whether or not the contact to be connected to the load is opening / closing corresponding to the drive of the coil, and a suitable method therefor. An electromagnetic relay is provided, and there is an effect that, for example, the maintainability of a factory FA device controlled by relay sequence technology using an electromagnetic relay is improved, and the operating rate of the device can be improved.
【図１】 接点異常検出方法の実施例１の回路図と実施
例２の回路図FIG. 1 is a circuit diagram of a contact abnormality detection method according to a first embodiment and a circuit diagram of a second embodiment.
【図２】 図１の実施例１のタイミングチャートと実施
例２のタイミングチャートFIG. 2 is a timing chart of the first embodiment and a timing chart of the second embodiment shown in FIG.
【図３】 図１の実施例１のための電磁継電器の実施例
の構成図FIG. 3 is a configuration diagram of an embodiment of an electromagnetic relay for Embodiment 1 of FIG.
【図４】 図１の実施例２における接点異常検出のフロ
ーチャートFIG. 4 is a flowchart of contact abnormality detection in the second embodiment of FIG.
１ 電磁継電器のコイル ２ 電磁継電器の接点 ３ 負荷 ４ 発光素子（第１発光素子となるＬＥＤ） ５ 発光素子（第２発光素子となるＬＥＤ） ６，７ 抵抗 ８ 電磁継電器における第２発光素子のための端子 ＰＣ シーケンサ ００、１０ アドレス １１ 検出回路 Ｔo 電磁継電器の動作時間 Ｔr 電磁継電器の復旧時間1 coil of electromagnetic relay 2 contact of electromagnetic relay 3 load 4 light emitting element (LED which becomes the first light emitting element) 5 light emitting element (LED which becomes the second light emitting element) 6,7 resistance 8 for the second light emitting element in the electromagnetic relay terminal PC sequencer 00, 10 address 11 detection circuit T o operation time T r electromagnetic relay recovery time of the electromagnetic relay
Claims (3)
発光素子と、該電磁継電器の接点の負荷に並列接続する
第２発光素子とを設け、 該第１及び第２発光素子の点灯有無の状態を照合して該
接点の異常を検出することを特徴とする電磁継電器の接
点異常検出方法。1. A first connecting in parallel with a coil of an electromagnetic relay.
A light emitting element and a second light emitting element connected in parallel to a load of a contact of the electromagnetic relay are provided, and an abnormality of the contact is detected by checking whether the first and second light emitting elements are on or off. And method for detecting contact abnormality of electromagnetic relay.
号と、該電磁継電器の負荷接続した接点の通電有無を示
す信号とを、該駆動有無の切り換え時から所定時間後の
時点に照合して、該接点の異常を検出することを特徴と
する電磁継電器の接点異常検出方法。2. A signal indicating whether or not a coil of an electromagnetic relay is driven and a signal indicating whether or not a load-connected contact of the electromagnetic relay is energized are collated at a time point after a predetermined time has elapsed since the switching of the presence or absence of driving. A method for detecting a contact abnormality of an electromagnetic relay, which comprises detecting an abnormality of the contact.
１及び第２発光素子を組み込んであることを特徴とする
電磁継電器。3. An electromagnetic relay in which the first and second light emitting elements according to claim 1 are incorporated together with a coil and a contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4248447A JPH06103872A (en) | 1992-09-18 | 1992-09-18 | Electromagnetic relay and its contact failure sensing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4248447A JPH06103872A (en) | 1992-09-18 | 1992-09-18 | Electromagnetic relay and its contact failure sensing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06103872A true JPH06103872A (en) | 1994-04-15 |
Family
ID=17178271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4248447A Withdrawn JPH06103872A (en) | 1992-09-18 | 1992-09-18 | Electromagnetic relay and its contact failure sensing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06103872A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2807165A1 (en) * | 2000-03-28 | 2001-10-05 | Frederic Laurens | Diagnostic circuit box for 12-volt automotive applications for detection of circuit faults especially in relay circuits using an internal free-wheel diode, so that a diagnosis can be made without requiring a full circuit diagram |
| KR20020046741A (en) * | 2000-12-15 | 2002-06-21 | 이계안 | Operating state display type relay |
| JP2015136243A (en) * | 2014-01-17 | 2015-07-27 | 株式会社日立産機システム | Power converter and state determination method therefor |
| US9543098B2 (en) | 2012-09-13 | 2017-01-10 | Schneider Electric Industries Sas | Relay and a method for indicating a relay failure |
| JP6391899B1 (en) * | 2018-02-13 | 2018-09-19 | 三菱電機株式会社 | Electromagnetic relay diagnostic device |
-
1992
- 1992-09-18 JP JP4248447A patent/JPH06103872A/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2807165A1 (en) * | 2000-03-28 | 2001-10-05 | Frederic Laurens | Diagnostic circuit box for 12-volt automotive applications for detection of circuit faults especially in relay circuits using an internal free-wheel diode, so that a diagnosis can be made without requiring a full circuit diagram |
| KR20020046741A (en) * | 2000-12-15 | 2002-06-21 | 이계안 | Operating state display type relay |
| US9543098B2 (en) | 2012-09-13 | 2017-01-10 | Schneider Electric Industries Sas | Relay and a method for indicating a relay failure |
| JP2015136243A (en) * | 2014-01-17 | 2015-07-27 | 株式会社日立産機システム | Power converter and state determination method therefor |
| JP6391899B1 (en) * | 2018-02-13 | 2018-09-19 | 三菱電機株式会社 | Electromagnetic relay diagnostic device |
| US11488797B2 (en) | 2018-02-13 | 2022-11-01 | Mitsubishi Electric Corporation | Electromagnetic relay diagnostic device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19991130 |