CN107786111A - Frequency conversion fan tests power supply and its uses method of testing - Google Patents
Frequency conversion fan tests power supply and its uses method of testing Download PDFInfo
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- CN107786111A CN107786111A CN201711111094.XA CN201711111094A CN107786111A CN 107786111 A CN107786111 A CN 107786111A CN 201711111094 A CN201711111094 A CN 201711111094A CN 107786111 A CN107786111 A CN 107786111A
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- 238000012360 testing method Methods 0.000 title claims abstract description 62
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 35
- 238000010998 test method Methods 0.000 title claims abstract description 8
- 230000005611 electricity Effects 0.000 claims description 24
- 238000002955 isolation Methods 0.000 claims description 15
- 239000004821 Contact adhesive Substances 0.000 claims description 13
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 claims description 7
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 4
- 230000002159 abnormal effect Effects 0.000 claims description 3
- 230000005856 abnormality Effects 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 claims description 3
- 238000012956 testing procedure Methods 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 2
- 230000006378 damage Effects 0.000 abstract description 8
- 238000007599 discharging Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
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- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000000087 stabilizing effect Effects 0.000 description 3
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- 238000000605 extraction Methods 0.000 description 2
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- 206010008190 Cerebrovascular accident Diseases 0.000 description 1
- 208000006011 Stroke Diseases 0.000 description 1
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- 230000001070 adhesive effect Effects 0.000 description 1
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- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/40—Conversion of ac power input into dc power output without possibility of reversal by combination of static with dynamic converters; by combination of dynamo-electric with other dynamic or static converters
-
- 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
-
- 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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
The invention discloses a kind of frequency conversion fan test power supply and its use method of testing,After 220VAC/50Hz single-phase alternating currents power supply input electromagnetic interface filter,In the L of single-phase alternating current,Distinguish SRE normally opened contact on N lines to be connected with rectifier bridge stack again,AC/DC Switching Power Supplies are connected electrically in electromagnetic interface filter rear class,Rectifier bridge stack rear class is connected with surge protection circuit,Surge protection circuit rear class is connected with 3# relay normally open contacts,3# relay contact rear classes are connected with 310V,3# relay contacts between power supply ground to setting discharge resistance,Controlled mu balanced circuit rear class is provided with 2 electric discharge relays,AC/DC Switching Power Supply rear classes are electrically connected with controlled mu balanced circuit and MCU control processor,MCU control processor rear classes are electrically connected with controlled alignment circuit,Controlled alignment circuit rear class is electrically connected with VSP.Test safety, power down speed is fast, and testing efficiency is high, and motor will not be caused to damage.
Description
Technical field
The present invention relates to a kind of fan power, is tested more particularly, to a kind of frequency conversion fan being used in air purifier
With power supply and use method of testing.
Background technology
Air purifier apoplexy owner will use frequency conversion fan, go out shaft end installation centrifugal wind wheel in motor, air passes through
After filter screen purification, the wind wheel rotated discharges air from blade end, so drives indoor air circulation from motor output shaft end inspiration
Purification.And frequency conversion fan is motor and motor driver integrated design product.Motor is DC Brushless Motor, electricity
Motivation driver is driver for brushless DC motor, and 220VAC/50Hz single-phase alternating currents are powered, and driver is designed using split,
Power supply EMI filtering, rectifying and wave-filtering, DC/DC power circuits is external, by built in inverter and logic control part, built-in circuit
Part be connected by 5 pin power supplys/signal wire with external circuit, wherein 5 pin power supplys/signal wire be respectively power supply just（310VDC）,
Power supply（GND）, driving power is just（15VDC）, speed electric signal（VSP）, feedback speed signal（FG）.To ensure that work can
By property, 310VDC, 15VDC, VSP power on/off timing requirements（When seeing the A of electric sequence time zone shown in Fig. 2 and power down order
Area B）.But when frequency conversion fan produces in existing air purifier, 310VDC, 15VDC, VSP three-way power are tested not complete enough
It is kind, easily produced when testing of electric motors plugs connector and click on harm, power down speed is slow, and testing efficiency is low, and easily to motor
Cause to damage.
The content of the invention
When the present invention is solves frequency conversion fan production in existing air purifier, to 310VDC, 15VDC, VSP three-way power
Test is not perfect enough, is easily produced when testing of electric motors plugs connector and clicks on harm, and power down speed is slow, and testing efficiency is low, and
A kind of testing of electric motors that the present situations such as damage are easily caused to motor and are provided will not produce electrical shock hazard, power down speed when plugging plug-in unit
Degree is fast, and testing efficiency is high, the frequency conversion fan test power supply of damage will not be caused to motor and its using method of testing.
The present invention is that concrete technical scheme is used by solving above-mentioned technical problem：A kind of frequency conversion fan tests power supply,
Exist including AC/DC Switching Power Supplies, MCU control processors and the 5 pin power supplys/signal wire being electrically connected with frequency conversion fan, its feature
In：Also include electromagnetic interface filter, 1# relays, 2# relays, 3# relays, rectifier bridge stack, surge protection circuit, controlled voltage stabilizing
Circuit, controlled alignment circuit and electric discharge relay, electric discharge relay include 1# electric discharge relays and 2# electric discharge relays,
After 220VAC/50Hz single-phase alternating currents power supply input electromagnetic interface filter, connect 1# respectively on L, N line of single-phase alternating current
Relay contact and 2# relay contacts, AC/DC Switching Power Supplies are connected electrically in electromagnetic interface filter rear class, 1# relays and 2# relays
Device rear class is electrically connected with rectifier bridge stack, and rectifier bridge stack rear class is electrically connected with surge protection circuit, surge protection circuit rear class
Be electrically connected with 3# relay contacts, 3# relay contacts rear class is just being connected with the power supply in 5 pin power supplys/signal wire, 3# after
Appliance contact is just being electrically connected same to being connected with discharge resistance, controlled mu balanced circuit rear class between power supply ground with driving power
When, be electrically connected with 1# electric discharge relay and 2# electric discharge relay, AC/DC Switching Power Supply rear classes be electrically connected with controlled mu balanced circuit and
MCU control processors, MCU control processor rear classes are electrically connected with controlled alignment circuit, controlled alignment circuit rear class and 5 pins electricity
Speed electric signal in source/signal wire is electrically connected；1# relays, 2# relays and 3# relays under default conditions before test
Relay contact be normally open.1. frequency conversion fan is powered using 220VAC/50Hz single-phase alternating currents, before upper electricity in power supply
Portion's circuit and power supply physical isolation, testing of electric motors will not produce electrical shock hazard when plugging connector；The relay 2. two tunnels are discharged
Device discharge circuit, can be horizontal to requirement by 310VDC, 15VDC, Vsp tension discharge by numerical time in 1S, is used compared to general
Power supply, there is faster power down speed, testing efficiency is high；3. after power down, 5 pin power supplys/signal line terminals with motor connection
Upper residual voltage is extremely low, when current testing of electric motors has tested extraction connector, compared to the power supply typically used, and caused electricity
Pressure/current surge is minimum, will not damage motor, long product lifecycle；4. it is short to test time out, compared to the electricity typically used
The source time out of tens seconds, this power supply test finish can in 1S by the tension discharge on power supply/signal wire to requiring water
It is flat, next motor can be tested after 1S, testing cost is low.
Preferably, light-coupled isolation area, optocoupler are provided between described MCU control processors rear class and controlled alignment circuit
Isolated area is electrically connected with the feedback speed signal in 5 pin power supplys/signal wire, and light-coupled isolation area rear class is electric with controlled voltage stabilizing respectively
Road and controlled alignment circuit are electrically connected.Improve feedback speed signal isolation effect.
Preferably, while described controlled mu balanced circuit rear class is just electrically connected with driving power, 1# is electrically connected with
Discharge optocoupler and 2# electric discharge optocouplers.Accelerate power down speed.
Preferably, described light-coupled isolation area includes 1# optocouplers and 2# optocouplers.Improve isolation effect.
Preferably, described 3# relay contacts on the power supply positive connecting line in 5 pin power supplys/signal wire with being parallel with
Filter capacitor.Filter effect is improved, reduces interference effect
Another goal of the invention of the present invention is to provide a kind of frequency conversion fan test power supply test method, it is characterised in that：Bag
If include testing procedure
A. plug-in unit Connection Step frequency conversion fan connector to be tested inserted on test power supply matching connector；
B. the test switch on test power supply is pressed, MCU output control signals touch the 3# relays 3 of one of above-mentioned technical proposal
Point adhesive is to disconnect the connection with discharge resistance, the 1# relay contact adhesives that one of then make described in Claims 1 to 5, most
Make the 2# relay contact adhesives of one of above-mentioned technical proposal afterwards, what the positive 310V voltages of power supply were begun to ramp up presses test switch step
Suddenly；
Whether the positive 310V voltages of power supply c. detected in 5 pin power supplys/signal wire are normal, if voltage is low, are judged as the just upper electricity of power supply
Failure, disconnects the 1# relay contacts and 2# relay contacts of one of above-mentioned technical proposal, then disconnects one of above-mentioned technical proposal
3# relay contacts turn between GND with making 310V and power supply and discharged, while the just upper electricity of the power supply of buzzer warning instruction
Failure detection steps；
If the positive 310V voltages of power supply d. in 5 pin power supplys/signal wire are normal, the MCU controllers output of one of above-mentioned technical proposal
Control signal makes 1# electric discharge relay contact adhesives, makes 1# electric discharge optocoupler cut-offs, forbids the driving electricity in 5 pin power supplys/signal wire
The positive 15V electric discharges in source, last output control signal make the positive 15V of controlled mu balanced circuit work output driving power supply driving power just
The upper electric steps of 15V；
Whether the positive 15V voltages of driving power e. detected in 5 pin power supplys/signal wire are normal, if the positive 15V electric voltage exceptions of power supply, sentence
Break and just go up electric fault for driving power, output control signal makes controlled mu balanced circuit forbid the positive 15V of output driving power supply, then makes
1# electric discharge optocouplers turn on 15V positive to driving power electric discharge, finally disconnect 1# electric discharge relay contacts, the positive 15V of driving power and
Power supply GND connection electric discharge；Repeat the just upper electric fault detection of driving power that above-mentioned b step operates 310V electric discharges positive to power supply
Step；
If the positive 15V voltages of driving power f. in 5 pin power supplys/signal wire are normal, MCU control processor output control signals make
The 2# electric discharge relay contact adhesives of one of technical scheme are stated, makes 2# electric discharge optocoupler cut-offs, forbids speed electric signal VSP to put
Electricity, last output control signal make controlled alignment circuit work output speed electric signal VSP, believed according to feedback speed signal FG
Number calculate motor speed, according to rotating speed result adjust speed electric signal VSP, frequency conversion fan is operated in the driving of setting speed
Detecting step when power supply is normal；
G. motor speed is detected, if motor speed is abnormal, output control signal makes controlled alignment circuit forbid exporting speed electric
Signal VSP, then 2# electric discharge optocoupler conductings is discharged speed governing voltage signal VSP, finally disconnect 2# electric discharge relay contacts, adjust
GND connects electric discharge to fast voltage signal VSP with power supply；Carry out step c in order again and operate 15V electric discharges positive to driving power, enter
The above-mentioned b step of row operates the motor speed abnormality test step of 310V electric discharges positive to power supply.
Frequency conversion fan in air purifier is produced and carries out efficiently improving test, testing of electric motors will not produce when plugging plug-in unit
Electrical shock hazard, Security of test is high, power down speed is fast, production test efficiency high, motor will not be caused to damage, product uses the longevity
Life is high, and testing cost is low.
The beneficial effects of the invention are as follows：Production test of this frequency conversion fan test power supply for frequency conversion fan, 310VDC,
15VDC, VSP three-way power/signal wire automatic protection and prompt to alarm by electricity in Fig. 1 sequential/lower electricity, during electrical fault, have
Following advantage：1. frequency conversion fan is powered using 220VAC/50Hz single-phase alternating currents, power source internal circuit and power supply before upper electricity
Physical isolation, testing of electric motors will not produce electrical shock hazard when plugging connector；2. two tunnels electric discharge relay, electric discharge optocoupler electric discharge electricity
Road, can be horizontal to requirement by 310VDC, 15VDC, Vsp tension discharge by numerical time in 1S, compared to the power supply typically used, tool
There are faster power down speed, testing efficiency height；3. after power down, with residual voltage in 5 pin power supplys/signal line terminals of motor connection
It is extremely low, when current testing of electric motors has tested extraction connector, compared to the power supply typically used, caused voltage/current surge
It is minimum, motor, long product lifecycle will not be damaged；4. testing, time out was short, compared to the power supply typically used tens seconds
Time out, this power supply test finishes can be with to requiring horizontal, after 1S by the tension discharge on power supply/signal wire in 1S
Next motor is tested, testing cost is low.
Brief description of the drawings：
The present invention is described in further detail with reference to the accompanying drawings and detailed description.
Fig. 1 is the structural principle block diagram schematic diagram of frequency conversion fan test power supply of the present invention.
Fig. 2 is that 310VDC, 15VDC, VSP in the pin power supply of frequency conversion fan 5/signal wire of the prior art are powered on/off
Order sequential area schematic diagram.
Embodiment
Embodiment 1：
In embodiment shown in Fig. 1, a kind of frequency conversion fan tests power supply, including AC/DC Switching Power Supplies 40, MCU control processors
30 and 5 pin power supplys/signal wire 10 for being electrically connected with frequency conversion fan 20, in addition to electromagnetic interface filter 01,1# relays 03,2# after
Electrical equipment 04,3# relays 05, rectifier bridge stack 02, surge protection circuit 07, controlled mu balanced circuit 70, controlled alignment circuit 60 and put
Electrical relay, electric discharge relay include 1# electric discharge relays 73 and 2# electric discharge relays 74, and 220VAC/50Hz single-phase alternating currents supply
After power supply L/N input electromagnetic interface filters 01, connected respectively on L, N line of single-phase alternating current the contact of 1# relays 03 and 2# after
The contact of electrical equipment 04, AC/DC Switching Power Supplies 40 are connected electrically in the rear class of electromagnetic interface filter 01, the contact of 1# relays 03 and 2# relays 04
Contact rear class is electrically connected with rectifier bridge stack 02, and the rear class of rectifier bridge stack 02 is electrically connected with surge protection circuit 07, surge protection
07 circuit rear class is electrically connected with the contact of 3# relays 05, the contact rear class of 3# relays 05 and the electricity in 5 pin power supplys/signal wire 10
The positive 310V 11 in source is connected, and the contact of 3# relays 05 is connected with discharge resistance 06, controlled voltage stabilizing electricity between GND12 to power supply
While the rear class of road 70 is electrically connected with the positive 310V of driving power, 1# electric discharge relays 73 and 2# electric discharge relays are electrically connected with
The rear class of 74, AC/DC Switching Power Supply 40 is electrically connected with controlled mu balanced circuit 70 and MCU control processors, 30, MCU control process, and 30
Rear class is electrically connected with controlled alignment circuit 60, and the controlled rear class of alignment circuit 60 is believed with the speed electric in 5 pin power supplys/signal wire 10
Number VSP14 is electrically connected；Before test under default conditions 1# relays 03,2# relays 04 and 3# relays 05 relay contact
It is normally open.Be in series with light-coupled isolation area 50 between the rear class of MCU control processors 30 and controlled alignment circuit 60, optocoupler every
Be electrically connected from area 50 and the feedback speed signal FG15 in 5 pin power supplys/signal wire 10, the rear class of light-coupled isolation area 50 respectively with by
Control mu balanced circuit 70 and controlled alignment circuit 60 are electrically connected.The controlled rear class of mu balanced circuit 70 15V13 phases electricity positive with driving power
While connection, 1# electric discharge optocouplers 71 and 2# electric discharge optocouplers 72 are electrically connected with, wherein 1# discharging lights coupling corresponds to 1# electric discharge relays
Device, 2# discharging lights coupling correspond to 1# electric discharge relays.Light-coupled isolation area includes 1# optocouplers and 2# optocouplers, and wherein 1# discharging lights are symplectic
2# relays should be corresponded in 1# relays, 2# discharging lights coupling.The contact of 3# relays 05 and the power supply in 5 pin power supplys/signal wire
Filter capacitor 16 is parallel with positive connecting line.
LEMI wave filters：Test power supply to power for 220VAC, the effect of wave filter is that harmonic wave, the high frequency for reducing power network are done
Disturb；
L 1# relays, 2# relays：The connection of relay physical break system and power network after power down, prevents from shocking by electricity；
L surge protection circuits：Current surge when electric in suppression.
L 3# relays：When upper electric, electric power loop, the output of 310V terminal voltages are connected；During power down, discharge resistance is connected,
310V is discharged at end；
The controlled mu balanced circuits of l：Export 15Vdc when upper electric, cut off 15Vdc during power down；
L 1# electric discharges optocoupler, 1# electric discharge relays：During power down, to discharging for 15Vdc ends；
The controlled alignment circuits of l：VSP speed electrics are exported when upper electric, and VSP voltage outputs are cut off during power down；
L 2# electric discharges optocoupler, 2# electric discharge relays：During power down, VSP ends are discharged；
L light-coupled isolations area：MCU is isolated with the input/output signal of 310V, 15V side by photoelectrical coupler, improves system
Reliability.
Embodiment 2：
A kind of frequency conversion fan tests power supply test method, including if testing procedure
A. plug-in unit Connection Step frequency conversion fan connector to be tested inserted on test power supply matching connector；
B. press the test switch on test power supply, MCU output control signals make the contact adhesive of 3# relays 3 of embodiment 1 with
The connection with discharge resistance is disconnected, then makes the 1# relay contact adhesives of embodiment 1, finally makes the 2# relays of embodiment 1
Contact adhesive, what the positive 310V voltages of power supply were begun to ramp up presses test switching step；
Whether the positive 310V voltages of power supply c. detected in 5 pin power supplys/signal wire are normal, if voltage is low, are judged as the just upper electricity of power supply
Failure, disconnects the 1# relay contacts and 2# relay contacts of embodiment 1, then disconnects the 3# relay contacts of embodiment 1 and make
Turn between GND 310V and power supply and discharged, while the just upper electric fault detecting step of the power supply of buzzer warning instruction；
If the positive 310V voltages of power supply d. in 5 pin power supplys/signal wire are normal, the MCU controller output control signals of embodiment 1 make
1# electric discharge relay contact adhesives, make 1# electric discharge optocoupler cut-offs, forbid the positive 15V of driving power in 5 pin power supplys/signal wire to put
Electricity, last output control signal make electricity step on the positive 15V of the controlled mu balanced circuit work output driving power supply positive 15V of driving power
Suddenly；
Whether the positive 15V voltages of driving power e. detected in 5 pin power supplys/signal wire are normal, if the positive 15V electric voltage exceptions of power supply, sentence
Break and just go up electric fault for driving power, output control signal makes controlled mu balanced circuit forbid the positive 15V of output driving power supply, then makes
1# electric discharge optocouplers turn on 15V positive to driving power electric discharge, finally disconnect 1# electric discharge relay contacts, the positive 15V of driving power and
Power supply GND connection electric discharge；Repeat the just upper electric fault detection of driving power that above-mentioned b step operates 310V electric discharges positive to power supply
Step；
If the positive 15V voltages of driving power f. in 5 pin power supplys/signal wire are normal, MCU control processor output control signals make reality
The 2# electric discharge relay contact adhesives of example 1 are applied, makes 2# electric discharge optocoupler cut-offs, forbids speed electric signal VSP to discharge, finally export
Control signal makes controlled alignment circuit work output speed electric signal VSP, according to feedback speed signal FG signal of change motors
Rotating speed, speed electric signal VSP is adjusted according to rotating speed result, frequency conversion fan is being operated in the driving power of setting speed just
Detecting step when often；
G. motor speed is detected, if motor speed is abnormal, output control signal makes controlled alignment circuit forbid exporting speed electric
Signal VSP, then 2# electric discharge optocoupler conductings is discharged speed governing voltage signal VSP, finally disconnect 2# electric discharge relay contacts, adjust
GND connects electric discharge to fast voltage signal VSP with power supply；Carry out step c in order again and operate 15V electric discharges positive to driving power, enter
The above-mentioned b step of row operates the motor speed abnormality test step of 310V electric discharges positive to power supply.
Above content and structure describes the general principle, principal character and advantages of the present invention of product of the present invention, one's own profession
The technical staff of industry should be recognized that.Merely illustrating the principles of the invention described in examples detailed above and specification, this is not being departed from
On the premise of spirit and scope, various changes and modifications of the present invention are possible, and these changes and improvements belong to requirement and protected
Within the scope of the invention of shield.The scope of the present invention is defined by the appended claims and its equivalents.
Claims (6)
1. a kind of frequency conversion fan tests power supply, including AC/DC Switching Power Supplies, MCU control processors and mutually it is electrically connected with frequency conversion fan
The 5 pin power supplys/signal wire connect, it is characterised in that：Also include electromagnetic interface filter, 1# relays, 2# relays, 3# relays, rectification
Bridge heap, surge protection circuit, controlled mu balanced circuit, controlled alignment circuit and electric discharge relay, electric discharge relay discharge including 1#
Relay and 2# electric discharge relays, after 220VAC/50Hz single-phase alternating currents power supply inputs electromagnetic interface filter, in single phase ac
Connected respectively 1# relay contacts and 2# relay contacts on L, N line of electricity, AC/DC Switching Power Supplies are connected electrically in electromagnetic interface filter
Rear class, 1# relays and 2# relays rear class are electrically connected with rectifier bridge stack, and rectifier bridge stack rear class is mutually electric with surge protection circuit
Connection, surge protection circuit rear class are electrically connected with 3# relay contacts, 3# relay contacts rear class and 5 pin power supplys/signal wire
In power supply be just connected, 3# relay contacts are to being connected with discharge resistance between power supply ground, controlled mu balanced circuit rear class is with driving
While dynamic power supply is just electrically connected, 1# electric discharge relays and 2# electric discharge relays, AC/DC Switching Power Supplies rear class electricity are electrically connected with
Controlled mu balanced circuit and MCU control processor is connected with, MCU control processor rear classes are electrically connected with controlled alignment circuit, controlled
Alignment circuit rear class is electrically connected with the speed electric signal in 5 pin power supplys/signal wire；1# relays under default conditions before test
The relay contact of device, 2# relays and 3# relays is normally open.
2. test power supply according to the frequency conversion fan described in claim 1, it is characterised in that：Described MCU control processor rear classes
Light-coupled isolation area, light-coupled isolation area and the feedback speed signal phase in 5 pin power supplys/signal wire are provided between controlled alignment circuit
Electrical connection, light-coupled isolation area rear class are electrically connected with controlled mu balanced circuit and controlled alignment circuit respectively.
3. test power supply according to the frequency conversion fan described in claim 1, it is characterised in that：Described controlled mu balanced circuit rear class with
While driving power is just electrically connected, 1# electric discharge optocouplers and 2# electric discharge optocouplers are electrically connected with.
4. test power supply according to the frequency conversion fan described in claim 1, it is characterised in that：Described light-coupled isolation area includes 1# light
Coupling and 2# optocouplers.
5. test power supply according to the frequency conversion fan described in claim 1, it is characterised in that：Described 3# relay contacts and 5 pins
Filter capacitor is parallel with power supply positive connecting line in power supply/signal wire.
6. a kind of frequency conversion fan test power supply uses method of testing, it is characterised in that：If including testing procedure
A. plug-in unit Connection Step frequency conversion fan connector to be tested inserted on test power supply matching connector；
B. the test switch on test power supply is pressed, the 3# relays that one of MCU output control signals make described in Claims 1 to 5
The contact adhesive of device 3 to disconnect the connection with discharge resistance, inhale by the 1# relay contacts one of then made described in Claims 1 to 5
Close, the 2# relay contact adhesives one of finally made described in Claims 1 to 5, what the positive 310V voltages of power supply were begun to ramp up presses
Test switching step；
Whether the positive 310V voltages of power supply c. detected in 5 pin power supplys/signal wire are normal, if voltage is low, are judged as the just upper electricity of power supply
Failure, the 1# relay contacts and 2# relay contacts one of disconnected described in Claims 1 to 5, then disconnects Claims 1 to 5
One of described 3# relay contacts turn between GND with making 310V and power supply to be discharged, while the electricity of buzzer warning instruction
The just upper electric fault detecting step in source；
If the positive 310V voltages of power supply d. in 5 pin power supplys/signal wire are normal, the MCU controllers one of described in Claims 1 to 5
Output control signal makes 1# electric discharge relay contact adhesives, makes 1# electric discharge optocoupler cut-offs, forbids the drive in 5 pin power supplys/signal wire
The dynamic positive 15V electric discharges of power supply, last output control signal make the positive 15V of controlled mu balanced circuit work output driving power supply driving power
Electric step on positive 15V；
Whether the positive 15V voltages of driving power e. detected in 5 pin power supplys/signal wire are normal, if the positive 15V electric voltage exceptions of power supply, sentence
Break and just go up electric fault for driving power, output control signal makes controlled mu balanced circuit forbid the positive 15V of output driving power supply, then makes
1# electric discharge optocouplers turn on 15V positive to driving power electric discharge, finally disconnect 1# electric discharge relay contacts, the positive 15V of driving power and
Power supply GND connection electric discharge；Repeat the just upper electric fault detection of driving power that above-mentioned b step operates 310V electric discharges positive to power supply
Step；
If the positive 15V voltages of driving power f. in 5 pin power supplys/signal wire are normal, MCU control processor output control signals make power
Profit requires 1~5 one of described 2# electric discharge relay contact adhesives, makes 2# electric discharge optocoupler cut-offs, forbids speed electric signal VSP
Electric discharge, last output control signal makes controlled alignment circuit work output speed electric signal VSP, according to feedback speed signal FG
Signal of change motor speed, speed electric signal VSP is adjusted according to rotating speed result, frequency conversion fan is operated in the drive of setting speed
Detecting step when dynamic power supply is normal；
G. motor speed is detected, if motor speed is abnormal, output control signal makes controlled alignment circuit forbid exporting speed electric
Signal VSP, then 2# electric discharge optocoupler conductings is discharged speed governing voltage signal VSP, finally disconnect 2# electric discharge relay contacts, adjust
GND connects electric discharge to fast voltage signal VSP with power supply；Carry out step c in order again and operate 15V electric discharges positive to driving power, enter
The above-mentioned b step of row operates the motor speed abnormality test step of 310V electric discharges positive to power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711111094.XA CN107786111B (en) | 2017-11-13 | 2017-11-13 | Variable frequency fan test power supply and use test method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711111094.XA CN107786111B (en) | 2017-11-13 | 2017-11-13 | Variable frequency fan test power supply and use test method thereof |
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| CN107786111B CN107786111B (en) | 2023-12-15 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101127484A (en) * | 2007-05-23 | 2008-02-20 | 中国科学院电工研究所 | A digital high voltage DC power |
| US20080180977A1 (en) * | 2007-01-29 | 2008-07-31 | Innocom Technology (Shenzhen) Co., Ltd. | Power supply control circuit having controllable switch and liquid crystal display using the same |
| CN107070238A (en) * | 2017-04-25 | 2017-08-18 | 卢振华 | A kind of PLC controls the voltage rearrangeable switch supply unit of output voltage |
| CN207442712U (en) * | 2017-11-13 | 2018-06-01 | 浙江联宜电机有限公司 | Frequency conversion fan tests power supply |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080180977A1 (en) * | 2007-01-29 | 2008-07-31 | Innocom Technology (Shenzhen) Co., Ltd. | Power supply control circuit having controllable switch and liquid crystal display using the same |
| CN101127484A (en) * | 2007-05-23 | 2008-02-20 | 中国科学院电工研究所 | A digital high voltage DC power |
| CN107070238A (en) * | 2017-04-25 | 2017-08-18 | 卢振华 | A kind of PLC controls the voltage rearrangeable switch supply unit of output voltage |
| CN207442712U (en) * | 2017-11-13 | 2018-06-01 | 浙江联宜电机有限公司 | Frequency conversion fan tests power supply |
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