CN108152737A - A kind of anti-motor line sequence fault monitoring system and its monitoring method - Google Patents
A kind of anti-motor line sequence fault monitoring system and its monitoring method Download PDFInfo
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- CN108152737A CN108152737A CN201711353546.5A CN201711353546A CN108152737A CN 108152737 A CN108152737 A CN 108152737A CN 201711353546 A CN201711353546 A CN 201711353546A CN 108152737 A CN108152737 A CN 108152737A
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- line sequence
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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
- G01R31/34—Testing dynamo-electric machines
- G01R31/343—Testing dynamo-electric machines in operation
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- Control Of Electric Motors In General (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
The present invention relates to anti-motor line sequence fault monitoring technical fields, disclose a kind of anti-motor line sequence fault monitoring system and its monitoring method, which includes detection unit, control unit and execution unit；Detection unit is used to detect current values when motor is run under different stalls and is spread out of the current values measured as testing result signal；Control unit receives testing result signal, and prestore pre-set current value when motor is run under different stalls, if testing result signal is not more than pre-set current value, control unit sends out first control signal, and the control execution unit prompting motor gear line sequence is correct；If testing result signal is more than pre-set current value, control unit sends out second control signal, the control execution unit prompting motor gear line sequence mistake.The anti-motor line sequence fault monitoring system can identify the failure machine automatic alarm of multi gear wind speed wind turbine line sequence mistake in cabinet air-conditioner, improve quality control level.
Description
Technical field
The present invention relates to anti-motor line sequence fault monitoring technical field, more particularly to a kind of anti-motor line sequence fault monitoring system
System and its monitoring method.
Background technology
In air-conditioning sale, it sometimes appear that the phenomenon that complaining cabinet air-conditioner multi gear wind speed motor that cannot operate after sale, it should
The reason is that line sequence is different caused by phenomenon, the speed that wind turbine turns is different, and the electric current of operation will be different, and line sequence connection is wrong
Accidentally, motor operating current excessively high (being more than 1.5A, normal operating current is usually no more than 0.8A) can lead to burning machine, but to line sequence
The motor of connection error is tested, and tester can not detect the failure, so, it is wrong in order to detect the connection of the line sequence of motor
Accidentally, it is desirable to provide more effective scheme.
Invention content
The present invention provides a kind of anti-motor line sequence fault monitoring system and its monitoring method, above-mentioned anti-motor line sequence mistake
Monitoring system can identify the failure machine automatic alarm of multi gear wind speed wind turbine line sequence mistake in cabinet air-conditioner, avoid such event
Barrier air-conditioning, which is flowed into, to be caused to complain after sale, improves quality control level.
In order to achieve the above objectives, the present invention provides following technical scheme：
A kind of anti-motor line sequence fault monitoring system, including detection unit, control unit and execution unit；
The detection unit is used to detect current values when motor is run under different stalls and the electric current that will be measured
Numerical value is spread out of as testing result signal；
Described control unit is connect with the detection unit signal to receive the testing result signal, and prestores motor
Pre-set current value when being run under different stalls, wherein, if the testing result signal is not more than the pre-set current value,
Described control unit sends out first control signal, if the testing result signal is more than the pre-set current value, the control
Unit sends out second control signal；
The execution unit is electrically connected to receive the first control signal and second control with described control unit
Signal, the first control signal control the execution unit to prompt described motor gear line sequence correct, second control
Signal controls the execution unit to prompt described motor gear line sequence mistake.
Above-mentioned anti-motor line sequence fault monitoring system, including detection unit, control unit and execution unit；Detection unit
For detecting current values when motor is run under different stalls and using the current values measured as testing result signal
Outflow；Control unit is connect with detection unit signal to receive testing result signal, and is prestored motor and transported under different stalls
Pre-set current value during row；Wherein, if testing result signal is not more than pre-set current value, control unit sends out the first control letter
Number, the control execution unit prompting motor gear line sequence is correct；If testing result signal is more than pre-set current value, control unit
Send out second control signal, the control execution unit prompting motor gear line sequence mistake.By the electric current of each gear of the motor
Numerical value is tested successively, can be derived that whether the line sequence of motor entirety is correct.The anti-motor line sequence fault monitoring system, energy
Enough failure machine automatic alarms to multi gear wind speed wind turbine line sequence mistake in cabinet air-conditioner identify, such failure air-conditioning is avoided to be flowed into
It causes after sale to complain, improves quality control level.
Preferably, the detection unit is 4 Intelligent current tables.
Preferably, described control unit is PLC industrial control boards.
Preferably, the execution unit includes at least one in 24V buzzers, 24V indicator lights and high-current relay
Kind.
Preferably, Photoelectric Detection module is further included, to detect whether measured motor to be checked enters test section, the Photoelectric Detection
Module is connect with described control unit signal.
Preferably, the Photoelectric Detection module includes infrared receiving terminal and optocoupler, the infrared receiving terminal and optocoupler
Signal connects.
Preferably, reset button is further included.
Preferably, 24V Switching Power Supplies are further included.
It is any one using what is provided in above-mentioned technical proposal the present invention also provides a kind of anti-motor line sequence fault monitoring method
The anti-motor line sequence fault monitoring system of kind, includes the following steps：
Current values of detection unit detection motor when being run under different stalls and using the current values measured as
Testing result signal is spread out of；
Control unit receives the testing result signal, and the testing result signal is compared with pre-set current value,
In, if the testing result signal is not more than the pre-set current value, described control unit sends out first control signal；If institute
It states testing result signal and is more than the pre-set current value, then described control unit sends out second control signal.
Execution unit receives the first control signal and the second control signal, and the first control signal controls institute
Stating execution unit prompts described motor gear line sequence correct, and the second control signal is controlled described in the execution unit prompting
The motor gear line sequence mistake.
Preferably, when the first control signal controls the execution unit to prompt described motor gear line sequence correct
When, first control signal controls the 24V indicator lights of the execution unit to light, to show that the motor line sequence is correct.
Preferably, when the second control signal controls the execution unit to prompt described motor gear line sequence mistake
When, second control signal controls the 24V buzzer warnings of the execution unit and relay is controlled to disconnect, to prompt the motor
Line sequence mistake simultaneously stops testing.
Description of the drawings
Fig. 1 is a kind of structure diagram of anti-motor line sequence fault monitoring system provided in an embodiment of the present invention；
Fig. 2 is a kind of flow diagram of anti-motor line sequence fault monitoring method provided in an embodiment of the present invention.
Icon：
1- detection units；11-4 Intelligent current tables；2- control units；21-PLC industrial control boards；3- execution units；31-24V
Buzzer；32-24V indicator lights；33- high-current relays；4- Photoelectric Detection modules；41- infrared receiving terminals；42- optocouplers；5
Reset button；6-24V Switching Power Supplies.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment shall fall within the protection scope of the present invention.
It please refers to Fig.1, the present invention provides a kind of anti-motor line sequence fault monitoring system, including detection unit 1, control unit
2 and execution unit 3；
Detection unit 1 is used to detect current values when motor is run under different stalls and the current values that will be measured
It is spread out of as testing result signal；
Control unit 2 is connect with 1 signal of detection unit to receive testing result signal, and prestores motor in different stalls
Pre-set current value during lower operation, wherein, if testing result signal is not more than pre-set current value, control unit 2 sends out first
Signal is controlled, if testing result signal is more than pre-set current value, control unit 2 sends out second control signal；
Execution unit 3 is electrically connected to receive first control signal and second control signal, the first control letter with control unit 2
Number control execution unit 3 prompts the motor gear line sequence correct, and second control signal control execution unit 3 prompts motor the gear
Line sequence mistake.
Above-mentioned anti-motor line sequence fault monitoring system, including detection unit 1, control unit 2 and execution unit 3；Detection
Unit 1 is used to detect current values when motor is run under different stalls and using the current values measured as testing result
Signal is spread out of；Control unit 2 is connect with 1 signal of detection unit to receive testing result signal, and prestores motor in different shelves
Pre-set current value under position during operation；Wherein, if testing result signal is not more than pre-set current value, control unit 2 sends out the
One control signal, control execution unit 3 prompt the motor gear line sequence correct；If testing result signal is more than pre-set current value,
Then control unit 2 sends out second control signal, and control execution unit 3 prompts motor the gear line sequence mistake.By the every of the motor
The current values of a gear are tested successively, can be derived that whether the line sequence of motor entirety is correct.The anti-motor line sequence is wrong
Accidentally monitoring system can identify the failure machine automatic alarm of multi gear wind speed wind turbine line sequence mistake in cabinet air-conditioner, avoid such
Failure air-conditioning, which is flowed into, to be caused to complain after sale, improves quality control level.
In above-described embodiment, detection unit 1 is 4 Intelligent current tables 11, has high-precision, high reliability, can be clearly
Show the numerical value of surveyed electric current.Optional model CS9640T-A Intelligent current tables of 4 Intelligent current tables 11, such as Fig. 1 institutes
Show, the input terminal A and output terminal B of 4 Intelligent current tables 11 and motor power to be measured are connected by cable and transported with testing of electric motors
Electric current during row.Material used in connecting cable is more than 1.5 square millimeters of multiply annealed copper wire for area of section.
In above-described embodiment, control unit 2 is PLC industrial control boards 21, and test program, energy are write using with PLC industrial control boards 21
It is enough to realize to motor line sequence whether correct automatic identification, quality control level is improved, improves detection speed.PLC industrial control boards
21 optional model FX -20MR (double bright electronics).
In above-described embodiment, execution unit 3 is included in 24V buzzers 31,24V indicator lights 32 and high-current relay 33
At least one, execution unit 3 can 24V indicator lights 32 including two different colours indicate respectively the correct of motor line sequence
With mistake, can also 24V buzzers 31 including two alternative sounds indicate respectively the right and wrong of motor line sequence, preferably
Ground carrys out the correct of indication motor line sequence with 24V indicator lights 32, carrys out indication motor line sequence mistake, and make big electricity with buzzer 31
Current relay 33 disconnects, and stops test.Wherein, optional model AD17-SM of 24V buzzers 31,24V indicator lights it is optional
Model indicator light (TE) XB2-BVB3C DC24V greens, high-current relay requirement are more than the relay of 10A using shock current
Device.24V buzzers 31,24V indicator lights 32 and high-current relay 33 are electrically connected respectively with PLC industrial control boards 21, treat measured motor
The cable of power output end B is electrically connected with the input terminal of high-current relay 33, and the output terminal of high-current relay 33 passes through electricity
Cable is electrically connected with 4 Intelligent current tables 11, to work as line sequence mistake in use, control device stops detection.
In above-described embodiment, Photoelectric Detection module 4 is further included, to detect whether measured motor to be checked enters test section, photoelectricity
Detection module 4 is connect with 2 signal of control unit, when detecting that product enters test zone, PLC industrial control boards is made to control 4 intelligence
Energy ammeter work, it is efficient and convenient, the energy is saved, improves detection efficiency.
In above-described embodiment, Photoelectric Detection module 4 include infrared receiving terminal 41 and optocoupler 42, infrared receiving terminal 41 with
Optocoupler 42 is electrically connected, and optocoupler 42 is electrically connected with PLC industrial control boards 21, when product enters test zone, infrared receiving terminal 41 and light
Coupling 42, which realizes, converts optical signals to electric signal and by this signal transmission to PLC industrial control boards 21, this setting has anti-interference, electricity
The characteristics of road is simple, small power consumption, at low cost, long lifespan.
In above-described embodiment, further include reset button 5,5 both ends of reset button respectively with PLC industrial control boards 21 and 4 intelligence
Ammeter 11 is electrically connected, the reset function of realization device.
In above-described embodiment, further include 24V Switching Power Supplies 6, as shown in Figure 1,24V Switching Power Supplies 6 respectively with PLC industry controls
Plate, infrared receiving terminal 41, optocoupler 42 and 4 Intelligent current tables 11 are electrically connected, and 24V power supplys are provided for equipment.
It should be noted that above system also has package casing, it is more convenient so that system uses.
The embodiment of the present invention additionally provides a kind of anti-motor line sequence fault monitoring method, is provided using foregoing invention embodiment
Any one anti-motor line sequence fault monitoring system, refer to Fig. 2, include the following steps：
S201：Detection unit 1 detects current values when motor is run under different stalls and the electric current number that will be measured
Value is spread out of as testing result signal；
S202：Control unit 2 receives testing result signal, and testing result signal is compared with pre-set current value, wherein,
If testing result signal is not more than pre-set current value, control unit 2 sends out first control signal；If testing result signal is more than
Pre-set current value, then control unit 2 send out second control signal；
S203：Execution unit 3 receives first control signal and second control signal, first control signal control execution unit
3 prompt the motor gear line sequence correct, and second control signal control execution unit 3 prompts motor the gear line sequence mistake.
In above-mentioned anti-motor line sequence fault monitoring method, detection unit 1 detects electricity when motor is run under different stalls
Fluxion value is simultaneously spread out of the current values measured as testing result signal；Control unit 2 receives testing result signal, will examine
Consequential signal is surveyed to compare with pre-set current value, wherein, if testing result signal is not more than pre-set current value, control unit 2
Send out first control signal；If testing result signal is more than pre-set current value, control unit 2 sends out second control signal；It holds
Row unit 3 receives first control signal and second control signal, and first control signal control execution unit 3 prompts motor the gear
Line sequence is correct, and second control signal control execution unit 3 prompts motor the gear line sequence mistake.By each gear of the motor
Current values are tested successively, can be derived that whether the line sequence of motor entirety is correct.This method can be in cabinet air-conditioner
The failure machine automatic alarm identification of multi gear wind speed wind turbine line sequence mistake, avoids such failure air-conditioning from being flowed into and causes to complain after sale,
Improve quality control level.
It should be noted that the size of pre-set current value is adjustable, and it can be according to the size of practical abnormal current, adjusting should
The size of predetermined current, in above-described embodiment, predetermined current is set as 1A.
Preferably, when first control signal control execution unit 3 prompts the motor gear line sequence correct, the first control letter
The 24V indicator lights 32 of number control execution unit 3 are lighted, and to show that the motor line sequence is correct, simple and clear can be observed, are made
It must check that efficiency further improves.
Preferably, when second control signal, which controls, performs the prompting motor gear line sequence mistake of Unit 3, the second control letter
The 24V buzzers 31 of number control execution unit 3 alarm and high-current relay 33 are controlled to disconnect, to prompt motor line sequence mistake simultaneously
Stop test, fast automatic can recognize line sequence mistake and stop test, improve testing efficiency.
The specific operating procedure of anti-motor line sequence fault monitoring method is as follows：
When air conditioner motor run well test, inspector controls the machine respectively in air-supply " high, medium and low " third gear
It is operated, current detecting system is not alarmed in operation process, then can determine that blade motor wiring is normal；
When air conditioner motor run well test, inspector controls the machine respectively in air-supply " high, medium and low " third gear
It is operated, current detecting system is alarmed in operation process, then can determine that blade motor wiring exception, and machine needs offline processing.
In above-described embodiment, anti-motor line sequence fault monitoring method, is for the detection of cabinet air-conditioner line sequence, this method is also
It can be used for the detection of other device line sequences, be not limited herein.
Obviously, those skilled in the art can carry out the embodiment of the present invention various modification and variations without departing from this hair
Bright spirit and scope.In this way, if these modifications and changes of the present invention belongs to the claims in the present invention and its equivalent technologies
Within the scope of, then the present invention is also intended to include these modifications and variations.
Claims (11)
1. a kind of anti-motor line sequence fault monitoring system, which is characterized in that including detection unit, control unit and perform list
Member；
The detection unit is used to detect current values when motor is run under different stalls and the current values that will be measured
It is spread out of as testing result signal；
Described control unit is connect with the detection unit signal to receive the testing result signal, and prestores motor not
With pre-set current value when being run under gear, wherein, it is described if the testing result signal is not more than the pre-set current value
Control unit sends out first control signal, if the testing result signal is more than the pre-set current value, described control unit
Send out second control signal；
The execution unit is electrically connected with described control unit to receive the first control signal and the second control signal,
The first control signal controls the execution unit to prompt described motor gear line sequence correct, the second control signal control
It makes the execution unit and prompts described motor gear line sequence mistake.
2. anti-motor line sequence fault monitoring system according to claim 1, which is characterized in that the detection unit is 4
Intelligent current table.
3. anti-motor line sequence fault monitoring system according to claim 1, which is characterized in that described control unit PLC
Industrial control board.
4. anti-motor line sequence fault monitoring system according to claim 1, which is characterized in that the execution unit includes
At least one of 24V buzzers, 24V indicator lights and high-current relay.
5. anti-motor line sequence fault monitoring system according to claim 1, which is characterized in that further include Photoelectric Detection mould
Block, to detect whether measured motor to be checked enters test section, the Photoelectric Detection module is connect with described control unit signal.
6. anti-motor line sequence error monitoring system according to claim 5, which is characterized in that the Photoelectric Detection module packet
Infrared receiving terminal and optocoupler are included, the infrared receiving terminal is connect with optocoupler signal.
7. anti-motor line sequence fault monitoring system according to claim 1, which is characterized in that further include reset button.
8. anti-motor line sequence fault monitoring system according to claim 1, which is characterized in that further include 24V Switching Power Supplies.
9. a kind of anti-motor line sequence fault monitoring method, using any anti-motor line sequence fault monitorings of claim 1-8
System, which is characterized in that including：
Detection unit detects current values when motor is run under different stalls and using the current values measured as detection
Consequential signal is spread out of；
Control unit receives the testing result signal, and the testing result signal is compared with pre-set current value, wherein, if
The testing result signal is not more than the pre-set current value, then described control unit sends out first control signal；If the inspection
It surveys consequential signal and is more than the pre-set current value, then described control unit sends out second control signal.
Execution unit receives the first control signal and the second control signal, is held described in the first control signal control
Row unit prompts described motor gear line sequence correct, and the second control signal controls the execution unit to prompt the motor
The gear line sequence mistake.
10. anti-motor line sequence fault monitoring method according to claim 9, which is characterized in that when the described first control letter
When number control execution unit prompts described motor gear line sequence correct, first control signal controls the execution unit
24V indicator lights are lighted, to show that the motor line sequence is correct.
11. anti-motor line sequence fault monitoring method according to claim 9, which is characterized in that when the described second control letter
When number control execution unit prompts described motor gear line sequence mistake, second control signal controls the execution unit
24V buzzer warnings simultaneously control relay to disconnect, to prompt the motor line sequence mistake and stop testing.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711353546.5A CN108152737A (en) | 2017-12-15 | 2017-12-15 | A kind of anti-motor line sequence fault monitoring system and its monitoring method |
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|---|---|---|---|
| CN201711353546.5A CN108152737A (en) | 2017-12-15 | 2017-12-15 | A kind of anti-motor line sequence fault monitoring system and its monitoring method |
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Application publication date: 20180612 |