CN202256627U - On-line monitoring device of motor - Google Patents
On-line monitoring device of motor Download PDFInfo
- Publication number
- CN202256627U CN202256627U CN2011203366740U CN201120336674U CN202256627U CN 202256627 U CN202256627 U CN 202256627U CN 2011203366740 U CN2011203366740 U CN 2011203366740U CN 201120336674 U CN201120336674 U CN 201120336674U CN 202256627 U CN202256627 U CN 202256627U
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- Prior art keywords
- motor
- current
- current transformer
- server
- signal transmitter
- 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.)
- Expired - Fee Related
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- 238000012806 monitoring device Methods 0.000 title abstract 3
- 238000004891 communication Methods 0.000 claims abstract description 7
- 238000004804 winding Methods 0.000 claims description 3
- 238000013480 data collection Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Control Of Electric Motors In General (AREA)
Abstract
The utility model relates to an on-line monitoring device of a motor, comprising the motor, wherein a power line of the motor is connected with a frequency converter through a breaker. The on-line monitoring device is characterized in that the power line of the motor is connected with a primary coil of a current transformer; the current of the motor is detected through the current transformer; a secondary coil of the current transformer is connected with a current signal transmitter; the current signal transmitter is communicated with a server through a communication mode of RS (Recommended Standard) 485; and the server is connected with a display. By means of the current transformer disclosed by the utility model, current parameters of each motor are input into a server system and the operation state of each motor is judged after 0.5S data collection and processing are carried out on the current of the each motor.
Description
Technical field
The utility model is specifically related to a kind of motor on-Line Monitor Device.
Background technology
For the kinematic train of a frequency converter band multiple electric motors, frequency converter can only reflect the comprehensive electric current of all motors, can't discern with the running status of each motor in the multiple electric motors.When the operation motor wherein one can not in time find when breaking down, give and produce or product quality causes bigger influence.
Summary of the invention:
The utility model provides the motor on-Line Monitor Device that can in time find motor fault.
The utility model present embodiment comprises motor; The power lead of motor connects frequency converter through isolating switch; It is characterized in that the power lead of motor connects the primary winding of current transformer, detect the electric current of motor through current transformer, the secondary coil of current transformer connects the current signal transmitter; The current signal transmitter carries out communication through RS485 communication modes and server, and server connects display.
In the current parameters input server system of the current transformer of the utility model with every motor, then every current of electric is carried out the running status of motor being judged it has following function after 0.5S data acquisition and the data processing:
1. starting overcurrent overtime protection, promptly the starting time of setting to after detect the rated current that electric current still is higher than motor, signal gives the alarm.
2. short-circuit protection, promptly the ratio of the arbitrary and rated current in the three-phase current greater than tuning coefficient and duration greater than setting time, signal gives the alarm.
3. rotation-clogging protection, be for motor in operational process, because of loading excessive or self mechanical reason etc., cause the motor axis, causes motor overload and being provided with.Executive mode is similar with short-circuit protection.
4. the specified time overload protection is promptly worked as the overload current value of arbitrary phase current of motor greater than setting, and is lasted till operation time limit always, the protection action.
5. inverse time lag overload protection.
6. open-phase protection is promptly reduced to a certain number percent of motor rated operational current and during the delay time that continues to set, is sent alarm command when the arbitrary phase current of motor.
7. unbalance protection promptly when motor generation three-phase imbalance, is reported to the police if unbalance factor reaches setting value.
Confirm the maintenance cycle of motor through the overload number of times, judge it is that reason or the motor that plant equipment causes breaks down according to the characteristics accumulation data at scene, whether discovery plant equipment further puts in place for grease, and whether working condition changes.
Description of drawings:
Fig. 1 is the block diagram of the utility model embodiment.
Fig. 2 is the circuit diagram of the utility model embodiment.
Among the figure, 1, motor, 2, isolating switch, 3, frequency converter, 4, current transformer, 5, the current signal transmitter, 6, server, 7, display.
Embodiment:
Embodiment: Fig. 1, shown in Figure 2; The power lead of present embodiment motor 1 connects frequency converter 3 through isolating switch 2; It is characterized in that the power lead of motor 1 connects the primary winding of current transformer 4, detect the electric current of motor through current transformer, the secondary coil of current transformer 4 connects current signal transmitter 5; Current signal transmitter 5 carries out communication through RS485 communication modes and server 6, and server 6 connects display 7.
Server is transported to display after the current signal that receives is handled, and generates on the display picture and reports to the police and current curve.
If be the kinematic train of a frequency converter band multiple electric motors, need each motor to connect a current signal transmitter, with being connected with server after the parallel connection of many current signal transmitters.
Claims (1)
1. motor on-Line Monitor Device; Comprise motor, the power lead of motor connects frequency converter through isolating switch, it is characterized in that the power lead of motor connects the primary winding of current transformer; Detect the electric current of motor through current transformer; The secondary coil of current transformer connects the current signal transmitter, and the current signal transmitter carries out communication through RS485 communication modes and server, and server connects display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203366740U CN202256627U (en) | 2011-09-08 | 2011-09-08 | On-line monitoring device of motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203366740U CN202256627U (en) | 2011-09-08 | 2011-09-08 | On-line monitoring device of motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202256627U true CN202256627U (en) | 2012-05-30 |
Family
ID=46117846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203366740U Expired - Fee Related CN202256627U (en) | 2011-09-08 | 2011-09-08 | On-line monitoring device of motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202256627U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104379475A (en) * | 2013-03-29 | 2015-02-25 | 株式会社松井制作所 | Material conveyance device and material conveyance method |
| CN104898055A (en) * | 2014-03-04 | 2015-09-09 | 乐星产电(无锡)有限公司 | Motor state determining method and device |
| CN106526343A (en) * | 2016-11-30 | 2017-03-22 | 杭州先途电子有限公司 | Compressor open-phase current detecting method |
| CN109991540A (en) * | 2019-04-19 | 2019-07-09 | 宁波冶金勘察设计研究股份有限公司 | Unmanned plane with dynamic monitoring function |
-
2011
- 2011-09-08 CN CN2011203366740U patent/CN202256627U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104379475A (en) * | 2013-03-29 | 2015-02-25 | 株式会社松井制作所 | Material conveyance device and material conveyance method |
| CN104379475B (en) * | 2013-03-29 | 2016-08-31 | 株式会社松井制作所 | Material conveying device and material delivery methods |
| CN104898055A (en) * | 2014-03-04 | 2015-09-09 | 乐星产电(无锡)有限公司 | Motor state determining method and device |
| CN104898055B (en) * | 2014-03-04 | 2017-11-24 | 乐星产电(无锡)有限公司 | Motor status determination methods and device |
| CN106526343A (en) * | 2016-11-30 | 2017-03-22 | 杭州先途电子有限公司 | Compressor open-phase current detecting method |
| CN109991540A (en) * | 2019-04-19 | 2019-07-09 | 宁波冶金勘察设计研究股份有限公司 | Unmanned plane with dynamic monitoring function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20120530 Termination date: 20170908 |