CN203519758U - Relay contact adhesion fault warning device - Google Patents
Relay contact adhesion fault warning device Download PDFInfo
- Publication number
- CN203519758U CN203519758U CN201320617500.0U CN201320617500U CN203519758U CN 203519758 U CN203519758 U CN 203519758U CN 201320617500 U CN201320617500 U CN 201320617500U CN 203519758 U CN203519758 U CN 203519758U
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- Prior art keywords
- contact
- relay
- coil
- pilot lamp
- adhesion fault
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Abstract
The utility model belongs to the technical field of relay and discloses a relay contact adhesion fault warning device. The device comprises a signal monitoring unit and a contact indication unit. The signal monitoring unit is connected in parallel to two ends of a coil of a relay and is used for monitoring whether a control signal exists in the coil. The contact indication unit is connected at a normally-closed contact and a zero line end of the coil and is used for monitoring whether the normally-closed contact is electrified. The control signal of the coil and the electrification condition of the contact are respectively monitored to judge whether a contact adhesion fault exists in an indicating relay.
Description
Technical field
The utility model relates to relay technical field, particularly a kind of relay contact adhesion fault alarming device.
Background technology
Conventional relay is by the PLC driving relay coil that transmits control signal, energising adhesive, and power-off is restored.In actual production, high-frequency adhesive and restoring action, probably cause often opening and normally closed contact adhesion of relay, and then cause industrial accident.
Whether maintainer is difficult to only from observing in appearance contact stick together, and needs instrument to measure.This causes some puzzlements not only to our maintainer when handling failure, and also may cause some misoperations in search procedure, and personal injury accident occurs, and consequence is serious.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of device that can differentiate safely and efficiently relay contact adhesion fault.
For solving the problems of the technologies described above, the utility model provides a kind of relay contact adhesion fault alarming device, comprising: signal monitoring unit and contact indicating member; Described signal monitoring unit is connected in parallel on the coil two ends of described relay, for monitoring coil, whether has control signal; Whether described contact indicating member is connected between described normally closed contact and described coil zero line side, charged for monitoring normally closed contact.
Further, described signal monitoring unit comprises: the first pilot lamp and the first current-limiting resistance; Described the first pilot lamp is connected with described the first current-limiting resistance afterwards and the coils from parallel connection of coils of described relay.
Further, described contact indicating member comprises: the second current-limiting resistance and the second pilot lamp; Described the second current-limiting resistance is connected with described the second pilot lamp and is formed the second series arm; Described the second series arm is connected between described normally closed contact and described coil zero line side.
Further, described contact indicating member also comprises: two diodes; The negative pole of described two diodes is connected with described the second series arm after being connected; The positive pole of described two diodes is connected respectively a normally closed contact.
When the relay contact adhesion fault alarming device that the utility model provides moves by signal monitoring unit and the energising of contact indicating member difference control relay, current switching situation on coil two ends and contact, so intuitive judgment relay often open with normally closed contact whether have adhesion fault; Safety and efficient.
Accompanying drawing explanation
The electrical connection diagram of the relay contact adhesion fault alarming device that Fig. 1 provides for the utility model embodiment.
Embodiment
Referring to Fig. 1, a kind of relay contact adhesion fault alarming device that the utility model embodiment provides, while switching on action by control relay, the current switching situation on coil two ends and contact, and then the contact adhesion fault of judgement relay.Relay contact adhesion fault alarming device comprises: signal monitoring unit and contact indicating member.
Signal monitoring unit is connected in parallel on the coil two ends of relay, for monitoring coil, whether has control signal; Comprise: the first pilot lamp LED1 and the first current-limiting resistance R1; It is in parallel with the coil J of relay after the first pilot lamp LED1 connects with the first current-limiting resistance R1.When the coil J of relay receives the control signal of PLC, the first pilot lamp LED1 connects and lights; The first current-limiting resistance R1 is mainly used in Bearer Control signal voltage, avoids short circuit relay coil J.
Whether contact indicating member is connected to normally closed contact and coil zero line side, charged for monitoring normally closed contact; Contact indicating member comprises: the second current-limiting resistance R2 and the second pilot lamp LED2; The second current-limiting resistance R2 connects with the second pilot lamp LED2 and forms the second series arm; The second series arm is connected between normally closed contact and described coil zero line side.When relay moves, the second pilot lamp LED2 does not continue to light.The second current-limiting resistance R2 is used for carrying supply voltage, avoids the second pilot lamp LED2 to burn.
In view of the second series arm is connected with two normally closed contacts of relay, for fear of influencing each other, preferred, contact indicating member also comprises: two diodes; The negative pole of two diodes is connected with the second series arm after being connected; The positive pole of two diodes is connected respectively a normally closed contact.Thereby realize the one-way conduction of two normally closed contacts to the second series arm, avoided phase mutual interference.
The state that the alarming device that the present embodiment provides gathers respectively the pilot lamp before and after the actuating of relay judges that relay goes out a little whether to exist adhesion fault.
During relay contact non-fault; Before the actuating of relay, the first pilot lamp LED1 does not work, normally closed contact conducting, and the second pilot lamp is bright; During the actuating of relay, the first pilot lamp is bright, the adhesive of coil electricity relay, and normally opened contact conducting, the second pilot lamp LED2 does not work.
Therefore, before the actuating of relay, the first pilot lamp LED1 does not work, and the second pilot lamp is bright; During the actuating of relay, the first pilot lamp is bright, and the second pilot lamp LED2 is bright; And the lasting conducting of explanation normally closed contact, fault sticks together.
Before the actuating of relay, the first pilot lamp LED1 does not work, and the second pilot lamp does not work; During the actuating of relay, the first pilot lamp is bright, and the second pilot lamp LED2 does not work; And the lasting conducting of explanation normally opened contact, fault sticks together.
The present embodiment can be by pilot lamp the situation of lighting before and after the actuating of relay, judge efficiently whether fault of contact; Reduced maintainer's risk in danger; In actual production, judge that fast relay fault also has positive effect to maintaining the security of production.
It should be noted last that, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although the utility model is had been described in detail with reference to example, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement the technical solution of the utility model, and not departing from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of claim scope of the present utility model.
Claims (4)
1. a relay contact adhesion fault alarming device, is characterized in that, comprising: signal monitoring unit and contact indicating member; Described signal monitoring unit is connected in parallel on the coil two ends of described relay, for monitoring coil, whether has control signal; Whether described contact indicating member is connected between normally closed contact and described coil zero line side, charged for monitoring normally closed contact.
2. relay contact adhesion fault alarming device as claimed in claim 1, is characterized in that, described signal monitoring unit comprises: the first pilot lamp and the first current-limiting resistance; Described the first pilot lamp is connected with described the first current-limiting resistance afterwards and the coils from parallel connection of coils of described relay.
3. relay contact adhesion fault alarming device as claimed in claim 2, is characterized in that, described contact indicating member comprises: the second current-limiting resistance and the second pilot lamp; Described the second current-limiting resistance is connected with described the second pilot lamp and is formed the second series arm; Described the second series arm is connected between described normally closed contact and described coil zero line side.
4. relay contact adhesion fault alarming device as claimed in claim 3, is characterized in that, described contact indicating member also comprises: two diodes; The negative pole of described two diodes is connected with one end of described the second series arm after being connected; The positive pole of described two diodes is connected respectively a normally closed contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320617500.0U CN203519758U (en) | 2013-10-08 | 2013-10-08 | Relay contact adhesion fault warning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320617500.0U CN203519758U (en) | 2013-10-08 | 2013-10-08 | Relay contact adhesion fault warning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203519758U true CN203519758U (en) | 2014-04-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320617500.0U Expired - Fee Related CN203519758U (en) | 2013-10-08 | 2013-10-08 | Relay contact adhesion fault warning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203519758U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104090229A (en) * | 2014-06-11 | 2014-10-08 | 惠州市亿能电子有限公司 | Multipath high-voltage relay output adhesion detection circuit and detection method |
| CN108773392A (en) * | 2018-04-10 | 2018-11-09 | 浙江众合科技股份有限公司 | The device that railway signal forbids lamp is lighted after all-electronin interlock system failure safely |
| CN109143049A (en) * | 2018-07-28 | 2019-01-04 | 国营芜湖机械厂 | A kind of electromagnetic relay lifetime estimation method based on electrical combined detection technique |
| CN109696621A (en) * | 2017-10-20 | 2019-04-30 | 河南森源重工有限公司 | A kind of electric vehicle and its high voltage supply system and fault detection method |
| CN110934485A (en) * | 2018-09-25 | 2020-03-31 | 浙江绍兴苏泊尔生活电器有限公司 | Control method and device of cooking appliance |
-
2013
- 2013-10-08 CN CN201320617500.0U patent/CN203519758U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104090229A (en) * | 2014-06-11 | 2014-10-08 | 惠州市亿能电子有限公司 | Multipath high-voltage relay output adhesion detection circuit and detection method |
| CN104090229B (en) * | 2014-06-11 | 2017-06-13 | 惠州市亿能电子有限公司 | The detection circuit and its detection method of multichannel high-voltage relay output adhesion |
| CN109696621A (en) * | 2017-10-20 | 2019-04-30 | 河南森源重工有限公司 | A kind of electric vehicle and its high voltage supply system and fault detection method |
| CN108773392A (en) * | 2018-04-10 | 2018-11-09 | 浙江众合科技股份有限公司 | The device that railway signal forbids lamp is lighted after all-electronin interlock system failure safely |
| CN108773392B (en) * | 2018-04-10 | 2020-04-21 | 浙江众合科技股份有限公司 | Device for safely lighting forbidden lamp of railway signal machine after fault of full electronic interlocking system |
| CN109143049A (en) * | 2018-07-28 | 2019-01-04 | 国营芜湖机械厂 | A kind of electromagnetic relay lifetime estimation method based on electrical combined detection technique |
| CN110934485A (en) * | 2018-09-25 | 2020-03-31 | 浙江绍兴苏泊尔生活电器有限公司 | Control method and device of cooking appliance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170706 Address after: 430080 Qingshan District stock company of Hubei, Wuhan Province Patentee after: Wuhan iron and Steel Company Limited Address before: 430080 Friendship Avenue, Hubei, Wuhan, No. 999 Patentee before: Wuhan Iron & Steel (Group) Corp. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140402 Termination date: 20181008 |