CN205941766U - Converter system with broken string detects function - Google Patents
Converter system with broken string detects function Download PDFInfo
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- CN205941766U CN205941766U CN201620899692.2U CN201620899692U CN205941766U CN 205941766 U CN205941766 U CN 205941766U CN 201620899692 U CN201620899692 U CN 201620899692U CN 205941766 U CN205941766 U CN 205941766U
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Abstract
The utility model discloses a converter system with broken string detects function, including converter, remote control platform, broken wire detection apparatus, first resistance and second resistance, be equipped with the scram switch on the remote control platform, behind the parallelly connected first resistance of scram switch again with the 2nd series resistance to link to each other in order to form scram signal circuit with broken wire detection apparatus through the electric wire, broken wire detection apparatus with the resistance value that the converter links to each other, is arranged in to detect scram signal circuit is with output scram signal or scram signal circuit abnormal signal to converter. The utility model discloses a converter system has advantages such as simple structure and broken string detection.
Description
Technical field
This utility model relates generally to converter technology field, refers in particular to a kind of converter system with burn out detection function
System.
Background technology
With the fast development of frequency changing driving system, frequency conversion market reaches its maturity, and application is increasingly extensive, and every profession and trade is to frequency conversion
The reliability requirement of drive system also more and more higher, the frequency changing driving system of modernization, major part is designed with remotely control jerk
Function, that is, in control end（As driver's cabin, OPS）When needing to control converter emergency shutdown, take the scram button of control end
To promote converter emergency shutdown, but due to there is longer signal transmission distance between control end and converter, such as middle
There is fracture or the short circuit of holding wire, all would be possible to the command signal causing converter to receive mistake, thus causing frequency conversion to drive
The mistakenly stop machine of dynamic system, causes to have a strong impact on to the safe and reliable continuous service of equipment.Therefore, reduce the mistake of long-range scram button
Error signal transmission probability, can be effectively ensured converter reliability service.At present in distribution transmission system, mainly for main transmission of electricity electricity
Cable has carried out burn out detection, and its detection method is mainly the mode of current detecting, by contrasting whether current value confirms circuit
There is disconnection fault, in system, there is multiple current transformers and detection, judging unit, system is extremely complex and relatively costly,
Realize the required space taking of burn out detection function also larger, and because whole measure loop is through multiple equipment, the event of system
Barrier point also accordingly increases, and reliability also just decreases.
Utility model content
The technical problems to be solved in the utility model is that：The technical problem existing for prior art, this practicality is new
Type provides the frequency convertor system that a kind of structure is simple, have burn out detection function.
For solve above-mentioned technical problem, the utility model proposes technical scheme be：
A kind of frequency convertor system with burn out detection function, including converter, remote control table, burn out detection dress
Put, first resistor and second resistance, described remote control table is provided with emergency stop switch, described emergency stop switch parallel connection first resistor
Connect with second resistance more afterwards, and emergent stop signal loop, described broken string inspection are connected together to by electric wire and broken thread detector
Survey device to be connected with described converter, be used for the resistance value detecting in emergent stop signal loop to export emergent stop signal or emergent stop signal
Loop abnormal signal is to converter.
Improvement further as technique scheme：
Described broken thread detector is installed on inside described converter.
Compared with prior art, the utility model has the advantage of：
The frequency convertor system with burn out detection function of the present utility model, by series connection at emergency stop switch and in parallel
Resistance, carries out real-time detection by being arranged on the broken thread detector of converter side to the resistance in emergent stop signal loop, such that it is able to
The exception of electric wire is monitored；And structure is simple, take small volume and detect reliable.
Brief description
Fig. 1 is frame principle figure of the present utility model.
Fig. 2 is circuit theory diagrams of the present utility model.
In figure label represents：1st, converter；11st, broken thread detector；2nd, remote control table；21st, emergency stop switch；3rd,
One resistance；4th, second resistance.
Specific embodiment
Below in conjunction with Figure of description and specific embodiment, this utility model is further described.
As depicted in figs. 1 and 2, the frequency convertor system with burn out detection function of the present embodiment, including converter 1, remote
Process control platform 2, broken thread detector 11, first resistor 3 and second resistance 4, remote control table 2 is provided with emergency stop switch
21, broken thread detector 11 is installed on inside converter 1, goes here and there with second resistance 4 after emergency stop switch 21 first resistor 3 in parallel again
Connection, and emergent stop signal loop, broken thread detector 11 and converter 1 phase are connected together to by electric wire and broken thread detector 11
Even, for detecting the resistance value in emergent stop signal loop to export emergent stop signal or emergent stop signal loop abnormal signal to converter
1.There are following several situations in the resistance wherein in emergent stop signal loop：
（1）When there is not broken string or short trouble, and emergency stop switch 21（Scram button）Do not taken（Scram button touches
Point disconnects）, now emergent stop signal loop（Between in Fig. 21 and 2）Resistance be（R1+R2）, broken thread detector 11 is by surveying
When the resistance value of examination is this value, it is defined as normal operating condition；
（2）When there is not broken string or short trouble, scram button is remotely taken（The scram button closing of contact）, now
Resistance between emergent stop signal loop is R2, and broken thread detector 11 is defined as R2 by the resistance value of test, then can determine whether this
When take state for jerk, now converter 1 will be according to this signal emergency shutdown；
（3）When be short-circuited in circuit fault when, now the resistance between emergent stop signal loop is equivalent to 0, burn out detection
By test resistance value, device 11 determines that now circuit there occurs fault, is closed by the relay contact of broken thread detector 11
Close, export break alarm signal；
（4）When there is disconnection fault in circuit, now the resistance between emergent stop signal loop is equivalent to infinity, broken string
By test resistance value, detection means 11 determines that now circuit there occurs fault, by the relay contact of broken thread detector 11
Closure, exports break alarm signal.
In addition, the signal that converter 1 is sent according to different jerk circuits, judge the specifically jerk of any bar circuit or broken string
Fault, and directly the jerk of concrete circuit or disconnection fault are respectively processed, he jerk source can be distinguished to reach, may be used again
The purpose distinguishing jerk disconnection fault source is it is ensured that the high reliability of circuit.
The frequency convertor system with burn out detection function of the present utility model, by series connection at emergency stop switch 21 and simultaneously
Connection resistance, carries out real-time detection by being arranged on the broken thread detector 11 of converter 1 side to the resistance in emergent stop signal loop, from
And the exception of electric wire can be monitored it is ensured that frequency convertor system reliability of operation；And structure is simple, take small volume
And detect reliable.
The above is only preferred implementation of the present utility model, protection domain of the present utility model is not limited merely to above-mentioned
Embodiment, all technical schemes belonging under this utility model thinking belong to protection domain of the present utility model.It should be pointed out that it is right
For those skilled in the art, some improvements and modifications under the premise of without departing from this utility model principle,
Should be regarded as protection domain of the present utility model.
Claims (2)
1. a kind of frequency convertor system with burn out detection function is it is characterised in that include converter（1）, remote control table
（2）, broken thread detector（11）, first resistor（3）And second resistance（4）, described remote control table（2）It is provided with jerk to open
Close（21）, described emergency stop switch（21）First resistor in parallel（3）Afterwards again with second resistance（4）Series connection, and pass through electric wire and broken string
Detection means（11）It is connected together to emergent stop signal loop, described broken thread detector（11）With described converter（1）It is connected, use
Resistance value in detection emergent stop signal loop is to export emergent stop signal or emergent stop signal loop abnormal signal to converter（1）.
2. the frequency convertor system with burn out detection function according to claim 1 is it is characterised in that described burn out detection
Device（11）It is installed on described converter（1）Internal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620899692.2U CN205941766U (en) | 2016-08-18 | 2016-08-18 | Converter system with broken string detects function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620899692.2U CN205941766U (en) | 2016-08-18 | 2016-08-18 | Converter system with broken string detects function |
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| Publication Number | Publication Date |
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| CN205941766U true CN205941766U (en) | 2017-02-08 |
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| CN201620899692.2U Active CN205941766U (en) | 2016-08-18 | 2016-08-18 | Converter system with broken string detects function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108110831A (en) * | 2017-12-25 | 2018-06-01 | 深圳市易路网科技有限公司 | A kind of charging wire fault detection method for being used to share charger baby |
-
2016
- 2016-08-18 CN CN201620899692.2U patent/CN205941766U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108110831A (en) * | 2017-12-25 | 2018-06-01 | 深圳市易路网科技有限公司 | A kind of charging wire fault detection method for being used to share charger baby |
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