CN109387714A - Frequency converter Auto-Test System - Google Patents
Frequency converter Auto-Test System Download PDFInfo
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- CN109387714A CN109387714A CN201811218695.5A CN201811218695A CN109387714A CN 109387714 A CN109387714 A CN 109387714A CN 201811218695 A CN201811218695 A CN 201811218695A CN 109387714 A CN109387714 A CN 109387714A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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Abstract
The present invention provides frequency converter Auto-Test Systems, including information acquisition apparatus, display controller, industrial controlled machine, push pin device and data acquisition components, the product information of information acquisition apparatus acquisition frequency converter, display controller identifies the attribute of frequency converter according to the product information that information acquisition apparatus obtains, push pin device is electrically connected with industrial controlled machine, for the test position for pushing down frequency converter to be controlled by industrial controlled machine after frequency converter is put into test station, industrial controlled machine is for testing frequency converter, the test data of data acquisition components acquisition frequency converter, and collected test data is sent to display controller, so that display controller analyzes test data and shows test result.The system can the work in every ability automatically to frequency converter detect, improve automatic test execution efficiency, save manpower and material resources, and increase the accuracy of test result, while also reducing project risk and entreprise cost.
Description
Technical field
The present invention relates to electronic equipment detection technique fields, in particular to frequency converter Auto-Test System.
Background technique
Frequency converter (Variable-frequency Drive, VFD) be by change motor frequency mode of working power supply come
Control ac motor realize to the soft start of AC induction motor, frequency control, improve running accuracy, change power factor,
The electric control appliance of the functions such as overcurrent/over-voltage/overload protection.Frequency converter is often applied to oil industry, chemical industry, manufacturing industry
Etc. many important industries, therefore frequency converter needs to carry out stability test or fault detection, to guarantee that frequency converter is in intact shape
State.
Frequency converter is tested mainly by manually inputting detection instruction, test macro pair in test macro at present
Frequency converter is tested, by operator's observation and exact p-value result.Such mode efficiency is lower, not can guarantee and ties to test
The correctness of fruit judgement, while also spending human and material resources.
Summary of the invention
(1) goal of the invention
To overcome above-mentioned at least one defect of the existing technology, automatically to the work in every ability of frequency converter into
Row detection, and automatic test execution efficiency is improved, manpower and material resources are saved, the present invention provides following technical schemes.
(2) technical solution
As the first aspect of the present invention, the invention discloses frequency converter Auto-Test Systems, comprising: acquisition of information is set
Standby, display controller, industrial controlled machine, push pin device and data acquisition components；
The information acquisition apparatus is used to obtain the product information of frequency converter；
The display controller is electrically connected with the information acquisition apparatus, for what is obtained according to the information acquisition apparatus
Product information identifies the attribute of the frequency converter；
The push pin device includes ejector pin component, and the push pin device is electrically connected with the industrial controlled machine, in the change
After frequency device is put into test station, is controlled mobile to the frequency converter by the industrial controlled machine and the ejector pin component is made to push down the change
The test position of frequency device；
The industrial controlled machine is electrically connected with the display controller, for testing the frequency converter；
The data acquisition components are electrically connected with the push pin device, the industrial controlled machine and the display controller respectively,
It is sent to the display controller for acquiring the test data of the frequency converter, and by collected test data, so that institute
Display controller is stated to analyze the test data and show test result；Wherein,
The test data includes at least one of the following: digital data, switching value data, output voltage data, output
Current data, output frequency data.
In a kind of possible embodiment, the information acquisition apparatus is barcode scanning gun.
In a kind of possible embodiment, the attribute of the frequency converter includes the rated power of the frequency converter.
In a kind of possible embodiment, the ejector pin component includes power end thimble and/or signal communication end thimble
And/or external control terminal thimble.
In a kind of possible embodiment, the system also includes: the first limit switch assembly, with the industrial controlled machine
Electrical connection, when for being placed with the frequency converter in detecting the test station, Xiang Suoshu industrial controlled machine issues signal, so that
It is mobile to the frequency converter that the industrial controlled machine controls the ejector pin component.
In a kind of possible embodiment, the system also includes: thimble air pump assembly is electrically connected with the industrial controlled machine
It connects, drives the ejector pin component mobile for being controlled by the industrial controlled machine.
In a kind of possible embodiment, the system also includes: the second limit switch assembly and first contactor group
Part, second limit switch assembly are electrically connected with the industrial controlled machine, the first contactor component respectively with the industrial controlled machine
It is electrically connected with the ejector pin component, to institute when second limit switch assembly is used to be triggered by the ejector pin component on the move
It states industrial controlled machine and issues signal, so that the industrial controlled machine controls the first contactor component and connects input voltage, described first is connect
Tentaculum component makes the frequency converter connect input voltage for being controlled by the industrial controlled machine.
In a kind of possible embodiment, the data acquisition components include: multiple relay mould groups, for by described
Industrial controlled machine control carries out the switching of mould group, and acquires the digital quantity and switching value data of the frequency converter.
In a kind of possible embodiment, the system also includes: second contactor component and load, described second connects
Tentaculum component is electrically connected with the industrial controlled machine and the ejector pin component respectively, makes the frequency converter for being controlled by the industrial controlled machine
Output voltage is connected, the load is connect with the ejector pin component.
In a kind of possible embodiment, the load includes electrical equipment unit.
In a kind of possible embodiment, the system also includes: braking resistor is connect with the ejector pin component.
In a kind of possible embodiment, the system also includes: booster is electrically connected with the industrial controlled machine, is used
In being controlled the input voltage for promoting the frequency converter by the industrial controlled machine.
In a kind of possible embodiment, the system also includes: police instruction component is electrically connected with the industrial controlled machine
It connects, in the test result exception alarm.
In a kind of possible embodiment, the system also includes: emergency stop component is electrically connected with the industrial controlled machine,
For cutting off the power supply of the ejector pin component during the test.
In a kind of possible embodiment, the system also includes: printing device is electrically connected with the industrial controlled machine,
For printing the test result.
In a kind of possible embodiment, the display controller is also used to the frequency converter attribute identified according to described in
Determine that the test station to match with the frequency converter, the push pin device include at least two ejector pin components, the thimble
Ejector pin component compatible with the frequency converter attribute is controlled mobile to the frequency converter and is pushed down by the industrial controlled machine in device
The test position of the frequency converter.
(3) beneficial effect
Frequency converter Auto-Test System provided by the invention can automatically the work in every ability to frequency converter carry out
Detection, improves automatic test execution efficiency, saves manpower and material resources, and increase the accuracy of test result, simultaneously
Also reduce project risk and entreprise cost.
Detailed description of the invention
It is exemplary below with reference to the embodiment of attached drawing description, it is intended to for the explanation and illustration present invention, and cannot manage
Solution is the limitation to protection scope of the present invention.
Fig. 1 is the structural block diagram of frequency converter Auto-Test System first embodiment provided by the invention.
Fig. 2 is the structural block diagram of frequency converter Auto-Test System second embodiment provided by the invention.
Specific embodiment
To keep the purposes, technical schemes and advantages of the invention implemented clearer, below in conjunction in the embodiment of the present invention
Attached drawing, technical solution in the embodiment of the present invention is further described in more detail.
It should be understood that in the accompanying drawings, from beginning to end same or similar label indicate same or similar element or
Element with the same or similar functions.Described embodiments are some of the embodiments of the present invention, rather than whole implementation
Example, in the absence of conflict, the features in the embodiments and the embodiments of the present application can be combined with each other.Based in the present invention
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts,
It shall fall within the protection scope of the present invention.
Herein, " first ", " second " etc. are only used for mutual differentiation, rather than indicate their significance level and sequence
Deng.
The division of module or component herein is only a kind of division of logic function, can there is it in actual implementation
His division mode, such as multiple modules can be combined or are integrated in another system.As illustrated by the separation member module,
Component is also possible to indiscrete may be physically separated.
Below with reference to Fig. 1 the present invention is described in detail provide frequency converter Auto-Test System one embodiment, i.e., first
Embodiment.The present embodiment is mainly used in frequency converter failure detection, establishes Auto-Test System by a set of, can be automatically
The work in every ability of frequency converter is detected, automatic test execution efficiency is improved, saves manpower and material resources, and increase
Add the accuracy of test result, while also reducing project risk and entreprise cost.
As shown in Figure 1, frequency converter Auto-Test System provided in this embodiment, mainly includes: information acquisition apparatus is shown
Show controller, industrial controlled machine, push pin device and data acquisition components.Wherein, the present embodiment is only included for a kind of frequency converter model
Test station.
Information acquisition apparatus is used to obtain the product information of frequency converter.Before operator detects frequency converter, elder generation is needed
Obtain the product information carried on frequency converter.In one embodiment, information acquisition apparatus is barcode scanning gun, such as infrared scan
Rifle.After infrared scan rifle scanning record product information, product information is transferred to display controller.
Display controller is electrically connected with information acquisition apparatus, and the product information for obtaining according to information acquisition apparatus is automatic
Identify the attribute of frequency converter.After information acquisition apparatus gets the product information of frequency converter, product information is sent to display
Controller, display controller identifies the information such as the model of frequency converter, running parameter according to product information, to judge the frequency converter
Model or running parameter whether be that the test macro of the present embodiment is able to carry out the model of test.If so, expression can be right
The frequency converter is tested, and frequency converter can be put into test station and carry out subsequent test content, otherwise the frequency converter is uncomfortable
For the test macro of the present embodiment, which cannot be tested.In one embodiment, the attribute packet of frequency converter
The rated power for including frequency converter, judged by the rated power of frequency converter the present embodiment test macro can to frequency converter into
Row test.
Industrial controlled machine is electrically connected with display controller, is used for data processing, and industrial controlled machine is industrial PLC industrial controlled machine.
Push pin device is electrically connected with industrial controlled machine, for being controlled by industrial controlled machine to frequency conversion after frequency converter is put into test station
Device is mobile and ejector pin component is made to push down the test position of frequency converter.After frequency converter is put into test station, the test position (test of frequency converter
Position including terminal etc. the port I/O) it is corresponding with the ejector pin component of push pin device, industrial controlled machine after determining that frequency converter position is correct,
It is mobile to frequency converter test position direction to control ejector pin component, tests position until compressing frequency converter.Specifically, frequency converter is in test work
Position in position is located at below ejector pin component, and the controlled decline of ejector pin component is to contradict frequency converter test position.
Industrial controlled machine is for testing frequency converter.
Data acquisition components are electrically connected with push pin device, industrial controlled machine and display controller respectively, for acquiring frequency converter
Test data, and collected test data is sent to display controller, so that display controller divides test data
It analyses and shows test result.Data acquisition components are responsible for after push pin device is connect with frequency converter, and the test number of frequency converter is acquired
According to.Wherein, test data includes at least one of the following: digital data, switching value data, and output voltage data export electric current
Data, output frequency data.After collecting test data, data acquisition components lead to collected test data by RS-485
Letter is sent to industrial controlled machine, is sent to display control module by RS-232 communication by industrial controlled machine, display control module passes through inside
The logical algorithm of program carries out analyses and comparison judgement to the data that industrial controlled machine is sent, and obtains test result, and test result is shown
It shows and.
In one embodiment, ejector pin component includes power end thimble and/or signal communication end thimble and/or external control end
Sub- thimble.Respective terminal of power end thimble, the quantity of signal communication end thimble and external control terminal thimble and frequency converter
Quantity matches, and the position of power end thimble, signal communication end thimble and external control terminal thimble is corresponding on frequency converter respectively
The position of connecting terminal is corresponding.
In one embodiment, system further include: the first limit switch assembly is electrically connected with industrial controlled machine, is used for
It detects when being placed with frequency converter in test station, issues signal to industrial controlled machine, so that industrial controlled machine controls ejector pin component to frequency conversion
Device is mobile.
When frequency converter is placed in test station, the first limit switch assembly receives trigger of frequency converter and sends out to industrial controlled machine
Signal out has informed that industrial controlled machine frequency converter has been properly placed test station, and industrial controlled machine receives what the first limit switch assembly was sent
After signal, control ejector pin component is mobile to frequency converter, to start the test to frequency converter.
In one embodiment, system further include: thimble air pump assembly is electrically connected with industrial controlled machine, for by industry control
Device control is to drive ejector pin component mobile.Thimble air pump assembly is the component for driving ejector pin component movement.Industrial controlled machine is receiving
After the signal that one limit switch assembly is sent, Xiang Dingzhen air pump assembly sends control signal, and thimble air pump assembly is according to receiving
Control signal drives ejector pin component mobile to frequency converter and withstands the test position of frequency converter, to start the test to frequency converter.That is,
First limit switch assembly is made of air pump solenoid valve limit switch.
In one embodiment, system further include: the second limit switch assembly and first contactor component, the second limit
Switch block is electrically connected with industrial controlled machine, and first contactor component is electrically connected with industrial controlled machine and ejector pin component respectively, and the second limit is opened
It closes and issues signal to industrial controlled machine when component is used to be triggered by ejector pin component on the move, so that industrial controlled machine controls first contactor group
Part connects input voltage, and first contactor component makes frequency converter connect input voltage for being controlled by industrial controlled machine.
After ejector pin component touches the second limit switch assembly, the second limit switch assembly sends signal, work to industrial controlled machine
It controls device and then controls first contactor component and be attracted, so that frequency converter connects input voltage.That is, the second limit switch assembly is by defeated
Enter power supply limit switch composition, first contactor component is made of input voltage A.C. contactor.
The working principle of A.C. contactor is to be matched using electromagnetic force with spring force, realizes the connection and disjunction of contact
's.A.C. contactor is there are two types of working condition: power failure state (release conditions) and obtaining electricity condition (action state).Work as sucking coil
After energization, static iron core is made to generate electromagnetic attraction, armature is attracted, and the connecting rod being connected with armature drives contact action, makes normally closed touching
Head disconnecting tentaculum is in obtain electricity condition.When sucking coil power-off, electromagnetic attraction disappears, and armature is being opened again, closes normally open contact
It closes, the lower release of position spring effect, all contacts reset therewith, and contactor is in power failure state.
In one embodiment, data acquisition components include: multiple relay mould groups, for being controlled progress by industrial controlled machine
The switching of mould group, and acquire the digital quantity and switching value data of frequency converter.Relay mould group is single small in electrical control cabinet
Power relay is subject to integrated, seriation, reduces intermediate connection link, improves the performance of product.Starting to frequency conversion
After device is tested, industrial controlled machine control switching relay mould group, to test frequency converter.Above-mentioned multiple relay mould groups
Effect be inputted, the conversion of output information, such as voltage signal/current signal, before the NPN/PNP signal of I/O signal
Switching etc., is automatically switched relay mould group by industrial controlled machine, can save and manually plug jumper cap, and test effect is improved
Rate.Specifically, data acquisition components include three multi-functional switching relay mould groups, i.e. the first relay mould group, the second relay
Device mould group and third relay mould group.After starting to test frequency converter, industrial controlled machine controls above three relay mould group
Voluntarily switch.
In one embodiment, system further include: second contactor component and load.Second contactor component respectively with
Industrial controlled machine and ejector pin component electrical connection, for being controlled the output voltage for making load connect frequency converter by industrial controlled machine, load passes through top
Needle assemblies are connect with frequency converter.Before the output electric current to frequency converter is tested, first the output voltage of frequency converter is carried out
Test after confirmation frequency converter output voltage does not have exception, then accesses load disease test output electric current.Specifically, working as frequency converter
When running to certain setpoint frequency (such as 50Hz), data acquisition components acquire the output voltage of frequency converter and by collected data
It is sent to industrial controlled machine, industrial controlled machine judges that frequency converter three-phase output voltage signal whether within the scope of tolerance, and will collect
Data be sent to display control module and shown, and when in the range of the output voltage is in tolerance, continue into
The test of row output electric current.When the output electric current to frequency converter is tested, industrial controlled machine controls second contactor component and is attracted,
Test macro access is set to load and make to load electric, data acquisition components acquisition current signal is simultaneously sent to by RS-485 communication
Display control module, whether extremely display control module judges electric current by program, and test result is shown.That is, the
Two contactor assemblies are made of output voltage A.C. contactor.
In one embodiment, load includes electrical equipment unit.
In one embodiment, system further include: braking resistor is connect with ejector pin component.Braking resistor is ripple
One kind of resistance is mainly used in the mechanical system that Frequency Converter Control motor quickly stops, and helps motor by it because of quickly parking
Generated regenerative electric energy is converted into thermal energy.Motor, due to effect of inertia, can generate a large amount of regeneration in quick docking process
Electric energy will directly act on the DC circuit part of frequency converter if consuming this partial regeneration electric energy not in time, less serious case,
Frequency converter can report failure, and severe one can then damage frequency converter.The appearance of braking resistor, very good solution this problem, protection become
Frequency device is not by the harm of motor regenerative electric energy.
When the output electric current to frequency converter is tested and show that output electric current is without exception, industrial controlled machine carries out frequency converter
Slow down, stopping function test.Specifically, industrial controlled machine issues speed reducing stopping signal to electrical equipment unit, electrical equipment unit slows down, Jin Erting
It only operates, in the process, industrial controlled machine acquires the output frequency and output electric current of frequency converter, to judge whether electrical equipment unit stops turning
Dynamic, industrial controlled machine also reads the fault message of frequency converter when electrical equipment unit breaks down.After the completion of slowing down, stopping function tested,
The data of acquisition and testing result are sent to display control module and shown by industrial controlled machine.Slowing down, in stopping process, is surveying
Test system carries out voltage release using braking resistor.
In one embodiment, system further include: booster is electrically connected with industrial controlled machine, for being controlled by industrial controlled machine
Whether the input voltage for promoting frequency converter, can be normally carried out self-protection to detect frequency converter when electric current reaches overload.
Booster, also known as testing transformer, full name AC high-voltage test transformer are used for various electric equipment products, electrically
Equipment, insulating materials etc. carry out the dielectric(al) test under assigned voltage, examine the dielectric level of product, find the exhausted of test item
Edge defect measures the ability for bearing overvoltage.
Industrial controlled machine controls electronic booster and promotes frequency converter input voltage, and electronic booster is loaded automatically, until becoming
Frequency device electric current reaches overload, and data acquisition components acquire the current signal of frequency converter, and test data is sent to industrial controlled machine,
Industrial controlled machine judges whether frequency converter can be normally carried out signal protection, and result is sent to display control module, display control
Module shows the test result.
In one embodiment, system further include: police instruction component is electrically connected with industrial controlled machine, for testing
Results abnormity alarm.Specifically, during the test, if discovery has the test result of test item unqualified, police instruction
Component is alarmed by sounding and/or luminous mode.
In one embodiment, system further include: emergency stop component is electrically connected with industrial controlled machine, in test process
The power supply of middle cutting ejector pin component.During test frequency converter, if being abnormal situation, can by triggering emergency stop component come
Stop test, emergency stop component can be scram button.
In one embodiment, system further include: printing device is electrically connected with industrial controlled machine, is used for printing test knot
Fruit.
After the completion of test, industrial personal computer resets the components such as each relay mould group, braking resistor, booster, each contactor, display
Control module saves the test result information of frequency converter, if finding functional sexual abnormality in test result, industrial controlled machine meeting
It gives police instruction component to issue signal, police instruction component sounding and/or shines to warn staff.If non-discovery feature
Abnormal, then printing device can print test result.
Below with reference to another embodiment for the frequency converter Auto-Test System that Fig. 2 the present invention is described in detail provides, i.e., the
Two embodiments.The present embodiment is mainly used in frequency converter failure detection, establishes Auto-Test System by a set of, can automate
Ground detects the work in every ability of frequency converter, improves automatic test execution efficiency, saves manpower and material resources, and
The accuracy of test result is increased, while also reducing project risk and entreprise cost.
As shown in Fig. 2, frequency converter Auto-Test System provided in this embodiment, mainly includes: information acquisition apparatus is shown
Show controller, industrial controlled machine, push pin device and data acquisition components.Wherein, the present embodiment includes for a variety of different frequency conversion types
Number multiple test stations, specifically, the present embodiment include two test stations.It is understood that the present embodiment is not right
The quantity of test station makes concrete restriction.
Information acquisition apparatus is used to obtain the product information of frequency converter.Before operator detects frequency converter, elder generation is needed
Obtain the product information carried on frequency converter.In one embodiment, information acquisition apparatus is barcode scanning gun, such as infrared scan
Rifle.After infrared scan rifle scanning record product information, product information is transferred to display controller.
Display controller is electrically connected with information acquisition apparatus, and the product information for obtaining according to information acquisition apparatus is automatic
The attribute for identifying frequency converter is also used to determine the test work to match with frequency converter according to the frequency converter attribute identified
Position.After information acquisition apparatus gets the product information of frequency converter, product information is sent to display controller, display controller
The information such as the model of frequency converter, running parameter are identified according to product information, to judge the model or running parameter of the frequency converter
Which adapt in test macro respectively for the test station in multiple test stations of different model.Specifically, this implementation
There are two test station tools in example, and two test stations are directed to the frequency converter of different model respectively, by identifying frequency converter
Information come it is determined that tested using which test station frequency converter, frequency converter is then put into test station and is carried out
Subsequent test content.In one embodiment, the attribute of frequency converter includes the rated power of frequency converter, passes through frequency converter
Rated power judges the test station being adapted to the frequency converter.
Industrial controlled machine is electrically connected with display controller, is used for data processing, and industrial controlled machine is industrial PLC industrial controlled machine.
Push pin device is electrically connected with industrial controlled machine, for being controlled by industrial controlled machine to frequency conversion after frequency converter is put into test station
Device is mobile and ejector pin component is made to push down the test position of frequency converter, and push pin device includes two ejector pin components.As shown in Fig. 2, surveying
Trial work position is there are two in the case where, and each test station all has an ejector pin component, and frequency converter is put into compatible test work
Behind position, the test position (test position includes the port the I/O such as terminal) of frequency converter is corresponding with the ejector pin component of the test station.Industry control
For device after determining that frequency converter position is correct, control ejector pin component is mobile to frequency converter test position direction, surveys until compressing frequency converter
Try position.Specifically, position of the frequency converter in test station is located at below ejector pin component, the controlled decline of ejector pin component is become with contradicting
Frequency device tests position.In the case where judging test station compatible with frequency converter with frequency converter rated power, push pin device packet
Two ejector pin components included are respectively to be used for the first ejector pin component of 0.75KW-3.7KW frequency converter and become for 5.5KW-11KW
Second ejector pin component of frequency device.Assuming that frequency converter between 0.75KW-3.7KW, is then put into the first test by the power of frequency converter
In station, it is mobile that industrial controlled machine controls the first ejector pin component；If assuming that the power of frequency converter is between 5.5KW-11KW, as empty in figure
Shown in line, then frequency converter is put into the second test station, it is mobile that industrial controlled machine controls the second ejector pin component.
Industrial controlled machine is for testing frequency converter.
Data acquisition components are electrically connected with push pin device, industrial controlled machine and display controller respectively, for acquiring frequency converter
Test data, and collected test data is sent to display controller, so that display controller divides test data
It analyses and shows test result.Data acquisition components are responsible for after push pin device is connect with frequency converter, and the test number of frequency converter is acquired
According to.Wherein, test data includes at least one of the following: digital data, switching value data, and output voltage data export electric current
Data, output frequency data.After collecting test data, data acquisition components lead to collected test data by RS-485
Letter is sent to industrial controlled machine, is sent to display control module by RS-232 communication by industrial controlled machine, display control module passes through inside
The logical algorithm of program carries out analyses and comparison judgement to the data that industrial controlled machine is sent, and obtains test result, and test result is shown
It shows and.
In one embodiment, ejector pin component includes power end thimble and/or signal communication end thimble and/or external control end
Sub- thimble.Respective terminal of power end thimble, the quantity of signal communication end thimble and external control terminal thimble and frequency converter
Quantity matches, and the position of power end thimble, signal communication end thimble and external control terminal thimble is corresponding on frequency converter respectively
The position of connecting terminal is corresponding.
In one embodiment, system further include: the first limit switch assembly is electrically connected with industrial controlled machine, is used for
It detects when being placed with frequency converter in test station, issues signal to industrial controlled machine, so that industrial controlled machine controls ejector pin component to frequency conversion
Device is mobile.
When frequency converter is placed in test station, the first limit switch assembly receives trigger of frequency converter and sends out to industrial controlled machine
Signal out has informed that industrial controlled machine frequency converter has been properly placed test station, and industrial controlled machine receives what the first limit switch assembly was sent
After signal, control ejector pin component is mobile to frequency converter, to start the test to frequency converter.There is multiple situations in test station
Under, the first limit switch assembly includes the first limit switch of respective numbers, each test station be equipped at least one
One limit switch.
In one embodiment, system further include: thimble air pump assembly is electrically connected with industrial controlled machine, for by industry control
Device control is to drive ejector pin component mobile.Thimble air pump assembly is the component for driving ejector pin component movement.Industrial controlled machine is receiving
After the signal that one limit switch assembly is sent, Xiang Dingzhen air pump assembly sends control signal, and thimble air pump assembly is according to receiving
Control signal drives ejector pin component mobile to frequency converter and withstands the test position of frequency converter, to start the test to frequency converter.That is,
First limit switch assembly is made of air pump solenoid valve limit switch.In the case where test station has multiple, thimble air pump group
Part includes the thimble air pump of respective numbers, and each test station is equipped with thimble air pump, specifically, if test station has two
It is a, then thimble air pump also there are two, respectively the first thimble air pump and the second thimble air pump.If transducer power is 0.75KW-
3.7KW, then the first thimble air pump that industrial controlled machine controls the first test station drive the first ejector pin component mobile.
In one embodiment, system further include: the second limit switch assembly and first contactor component, the second limit
Switch block is electrically connected with industrial controlled machine, and first contactor component is electrically connected with industrial controlled machine and ejector pin component respectively, and the second limit is opened
It closes and issues signal to industrial controlled machine when component is used to be triggered by ejector pin component on the move, so that industrial controlled machine controls first contactor group
Part connects input voltage, and first contactor component makes frequency converter connect input voltage for being controlled by industrial controlled machine.
After ejector pin component touches the second limit switch assembly, the second limit switch assembly sends signal, work to industrial controlled machine
It controls device and then controls first contactor component and be attracted, so that frequency converter connects input voltage.That is, the second limit switch assembly is by defeated
Enter power supply limit switch composition, first contactor component is made of input voltage A.C. contactor.
In the case where test station has multiple, the second limit switch assembly includes that the second limit of respective numbers is opened
It closes, first contactor component includes the first contactor of respective numbers.The first top of the first test station is controlled in industrial controlled machine
It, should after needle air pump drives the first ejector pin component mobile, and the first ejector pin component triggers second limit switch of this test station
Second limit switch sends signal, industrial controlled machine and then control first contactor actuation corresponding with this test station to industrial controlled machine,
So that frequency converter connects input voltage.
The working principle of A.C. contactor is to be matched using electromagnetic force with spring force, realizes the connection and disjunction of contact
's.A.C. contactor is there are two types of working condition: power failure state (release conditions) and obtaining electricity condition (action state).Work as sucking coil
After energization, static iron core is made to generate electromagnetic attraction, armature is attracted, and the connecting rod being connected with armature drives contact action, makes normally closed touching
Head disconnecting tentaculum is in obtain electricity condition.When sucking coil power-off, electromagnetic attraction disappears, and armature is being opened again, closes normally open contact
It closes, the lower release of position spring effect, all contacts reset therewith, and contactor is in power failure state.
In one embodiment, data acquisition components include: multiple relay mould groups, for being controlled progress by industrial controlled machine
The switching of mould group, and acquire the digital quantity and switching value data of frequency converter.Relay mould group is single small in electrical control cabinet
Power relay is subject to integrated, seriation, reduces intermediate connection link, improves the performance of product.Starting to frequency conversion
After device is tested, industrial controlled machine control switching relay mould group, to test frequency converter.Above-mentioned multiple relay mould groups
Effect be inputted, the conversion of output information, such as voltage signal/current signal, before the NPN/PNP signal of I/O signal
Switching etc., is automatically switched relay mould group by industrial controlled machine, can save and manually plug jumper cap, and test effect is improved
Rate.
Specifically, data acquisition components include three multi-functional switching relay mould groups, i.e. the first relay mould group, second
Relay mould group and third relay mould group.After starting to test frequency converter, industrial controlled machine controls above three relay
Mould group voluntarily switches.
In one embodiment, system further include: second contactor component and load.Second contactor component respectively with
Industrial controlled machine and ejector pin component electrical connection, for being controlled the output voltage for making load connect frequency converter by industrial controlled machine, load passes through top
Needle assemblies are connect with frequency converter.Before the output electric current to frequency converter is tested, first the output voltage of frequency converter is carried out
Test after confirmation frequency converter output voltage does not have exception, then accesses load disease test output electric current.Specifically, working as frequency converter
When running to certain setpoint frequency (such as 50Hz), data acquisition components acquire the output voltage of frequency converter and by collected data
It is sent to industrial controlled machine, industrial controlled machine judges that frequency converter three-phase output voltage signal whether within the scope of tolerance, and will collect
Data be sent to display control module and shown, and when in the range of the output voltage is in tolerance, continue into
The test of row output electric current.When the output electric current to frequency converter is tested, industrial controlled machine controls second contactor component and is attracted,
Test macro access is set to load and make to load electric, data acquisition components acquisition current signal is simultaneously sent to by RS-485 communication
Display control module, whether extremely display control module judges electric current by program, and test result is shown.That is, the
Two contactor assemblies are made of output voltage A.C. contactor.
In the case where test station has multiple, second contactor component includes the second contactor of respective numbers, is born
It carries also with multiple.Specifically, such as frequency converter is placed in the first test station, then industrial controlled machine controls the of the first test station
Two contactors are attracted, and access the load of the first test station.
In one embodiment, load includes electrical equipment unit.In the case where test station has multiple, electrical equipment unit also has more
A, each electrical equipment unit respectively corresponds corresponding test station.Specifically, test station there are two when, load also there are two, respectively
The frequency converter of corresponding 0.75KW-3.7KW is loaded for the first load and the second load, first, specifically uses 4KW electrical equipment unit；Second
The frequency converter for loading corresponding 5.5KW-11KW, specifically uses 7.5KW electrical equipment unit.
In one embodiment, system further include: braking resistor is connect with ejector pin component.Braking resistor is ripple
One kind of resistance is mainly used in the mechanical system that Frequency Converter Control motor quickly stops, and helps motor by it because of quickly parking
Generated regenerative electric energy is converted into thermal energy.Motor, due to effect of inertia, can generate a large amount of regeneration in quick docking process
Electric energy will directly act on the DC circuit part of frequency converter if consuming this partial regeneration electric energy not in time, less serious case,
Frequency converter can report failure, and severe one can then damage frequency converter.The appearance of braking resistor, very good solution this problem, protection become
Frequency device is not by the harm of motor regenerative electric energy.
When the output electric current to frequency converter is tested and show that output electric current is without exception, industrial controlled machine carries out frequency converter
Slow down, stopping function test.Specifically, industrial controlled machine issues speed reducing stopping signal to electrical equipment unit, electrical equipment unit slows down, Jin Erting
It only operates, in the process, industrial controlled machine acquires the output frequency and output electric current of frequency converter, to judge whether electrical equipment unit stops turning
Dynamic, industrial controlled machine also reads the fault message of frequency converter when electrical equipment unit breaks down.After the completion of slowing down, stopping function tested,
The data of acquisition and testing result are sent to display control module and shown by industrial controlled machine.Slowing down, in stopping process, is surveying
Test system carries out voltage release using braking resistor.
In the case where test station has multiple, braking resistor can only be arranged one, and each test station is in test process
In can pass through braking resistor and carry out voltage release.
In one embodiment, system further include: booster is electrically connected with industrial controlled machine, for being controlled by industrial controlled machine
Whether the input voltage for promoting frequency converter, can be normally carried out self-protection to detect frequency converter when electric current reaches overload.
Booster, also known as testing transformer, full name AC high-voltage test transformer are used for various electric equipment products, electrically
Equipment, insulating materials etc. carry out the dielectric(al) test under assigned voltage, examine the dielectric level of product, find the exhausted of test item
Edge defect measures the ability for bearing overvoltage.
Industrial controlled machine controls electronic booster and promotes frequency converter input voltage, and electronic booster is loaded automatically, until becoming
Frequency device electric current reaches overload, and data acquisition components acquire the current signal of frequency converter, and test data is sent to industrial controlled machine,
Industrial controlled machine judges whether frequency converter can be normally carried out signal protection, and result is sent to display control module, display control
Module shows the test result.
In the case where test station has multiple, electronic booster can only be arranged one, and each test station was being tested
It can be boosted by an electronic booster in journey.
In one embodiment, system further include: police instruction component is electrically connected with industrial controlled machine, for testing
Results abnormity alarm.Specifically, during the test, if discovery has the test result of test item unqualified, police instruction
Component is alarmed by sounding and/or luminous mode.
In one embodiment, system further include: emergency stop component is electrically connected with industrial controlled machine, in test process
The power supply of middle cutting ejector pin component.During test frequency converter, if being abnormal situation, can by triggering emergency stop component come
Stop test, emergency stop component can be scram button.
In one embodiment, system further include: printing device is electrically connected with industrial controlled machine, is used for printing test knot
Fruit.
After the completion of test, industrial personal computer resets the components such as each relay mould group, braking resistor, booster, each contactor, display
Control module saves the test result information of frequency converter, if finding functional sexual abnormality in test result, industrial controlled machine meeting
It gives police instruction component to issue signal, police instruction component sounding and/or shines to warn staff.If non-discovery feature
Abnormal, then printing device can print test result.
The information acquisition apparatus, display controller, industrial controlled machine, push pin device, data acquisition components, braking electricity of the present embodiment
Before the specific structure and connection relationship of the components such as resistance, booster, police instruction component, emergency stop component and printing device can refer to
Structure setting described in first embodiment is stated, is no longer repeated one by one.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by those familiar with the art, all answers
It is included within the scope of the present invention.Therefore, protection scope of the present invention should be with the scope of protection of the claims
It is quasi-.
Claims (10)
1. a kind of frequency converter Auto-Test System characterized by comprising information acquisition apparatus, display controller, industrial controlled machine,
Push pin device and data acquisition components；
The information acquisition apparatus is used to obtain the product information of frequency converter；
The display controller is electrically connected with the information acquisition apparatus, the product for obtaining according to the information acquisition apparatus
Information identifies the attribute of the frequency converter；
The push pin device includes ejector pin component, and the push pin device is electrically connected with the industrial controlled machine, in the frequency converter
After being put into test station, is controlled mobile to the frequency converter by the industrial controlled machine and the ejector pin component is made to push down the frequency converter
Test position；
The industrial controlled machine is electrically connected with the display controller, for testing the frequency converter；
The data acquisition components are electrically connected with the push pin device, the industrial controlled machine and the display controller respectively, are used for
The test data of the frequency converter is acquired, and collected test data is sent to the display controller, so that described aobvious
Show that controller analyzes the test data and shows test result；Wherein,
The test data includes at least one of the following: digital data, switching value data, and output voltage data export electric current
Data, output frequency data.
2. the system as claimed in claim 1, which is characterized in that the ejector pin component includes that power end thimble and/or signal are logical
Interrogate end thimble and/or external control terminal thimble.
3. the system as claimed in claim 1, which is characterized in that the system also includes: the first limit switch assembly, with institute
Industrial controlled machine electrical connection is stated, when for being placed with the frequency converter in detecting the test station, Xiang Suoshu industrial controlled machine is issued
Signal, so that the industrial controlled machine controls the ejector pin component to frequency converter movement.
4. the system as claimed in claim 1, which is characterized in that the system also includes: thimble air pump assembly, with the work
Device electrical connection is controlled, drives the ejector pin component mobile for being controlled by the industrial controlled machine.
5. the system as claimed in claim 1, which is characterized in that the system also includes: the second limit switch assembly and first
Contactor assembly, second limit switch assembly are electrically connected with the industrial controlled machine, for by the ejector pin component on the move
Signal is issued to the industrial controlled machine when triggering, so that the industrial controlled machine controls the first contactor component and connects input voltage；
The first contactor component is electrically connected with the industrial controlled machine and the ejector pin component respectively, is made for being controlled by the industrial controlled machine
The frequency converter connects input voltage.
6. the system as claimed in claim 1, which is characterized in that the data acquisition components include: multiple relay mould groups, are used
The switching of mould group is carried out in being controlled by the industrial controlled machine, and acquires the digital quantity and switching value data of the frequency converter.
7. the system as claimed in claim 1, which is characterized in that the system also includes: second contactor component and load, institute
It states second contactor component to be electrically connected with the industrial controlled machine and the ejector pin component respectively, makes institute for being controlled by the industrial controlled machine
It states frequency converter and connects output voltage, the load is connect with the ejector pin component.
8. the system as claimed in claim 1, which is characterized in that the system also includes: braking resistor, with the thimble group
Part connection.
9. the system as claimed in claim 1, which is characterized in that the system also includes: booster, with the industrial controlled machine electricity
Connection, for being controlled the input voltage for promoting the frequency converter by the industrial controlled machine.
10. system as claimed in any one of claims 1-9 wherein, which is characterized in that the display controller is also used to according to institute
It states the frequency converter attribute identified and determines that the test station to match with the frequency converter, the push pin device include at least two
A ejector pin component, ejector pin component compatible with the frequency converter attribute is controlled by the industrial controlled machine to institute in the push pin device
It states frequency converter movement and pushes down the test position of the frequency converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811218695.5A CN109387714A (en) | 2018-10-19 | 2018-10-19 | Frequency converter Auto-Test System |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811218695.5A CN109387714A (en) | 2018-10-19 | 2018-10-19 | Frequency converter Auto-Test System |
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| CN109387714A true CN109387714A (en) | 2019-02-26 |
Family
ID=65426947
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811218695.5A Pending CN109387714A (en) | 2018-10-19 | 2018-10-19 | Frequency converter Auto-Test System |
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