CN108448946A - The control method of motor restarting controller and motor restarting controller - Google Patents
The control method of motor restarting controller and motor restarting controller Download PDFInfo
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- CN108448946A CN108448946A CN201810355877.0A CN201810355877A CN108448946A CN 108448946 A CN108448946 A CN 108448946A CN 201810355877 A CN201810355877 A CN 201810355877A CN 108448946 A CN108448946 A CN 108448946A
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
- H02P1/02—Details of starting control
- H02P1/029—Restarting, e.g. after power failure
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Abstract
The present invention relates to motor restarting controller and control methods, and for restarting by inverter control motor, backup power supply module is electrically connected Logic control module and reseting module.Logic control module is used for after the instantaneous recess amplitude for detecting supply voltage reaches preset amplitude threshold, judges whether the run signal normal opened contact of frequency converter disconnects, if so, being latched the enabled instruction of frequency converter and detecting whether supply voltage restores；If supply voltage does not restore yet when preset time threshold reaches, disconnect the connection between backup power supply module and reseting module and release the enabled instruction of frequency converter, otherwise control backup power supply module and power to reseting module, and then controls frequency converter and reset.Whether it is strictly power supply instantaneous " shaking electricity " that above controller can be shut down with quick response and accurate judgement frequency converter causes, prevent erroneous judgement and caused by frequency converter error starting, guarantee continuous production operation reduces safety accident.
Description
Technical field
The present invention relates to industrial control fields, restart more particularly to a kind of motor restarting controller and motor
The control method of controller.
Background technology
With the looped network of main power grid and the increase of medium voltage network supply line of enterprise, and enterprise is to reduce power consumption not set
Impedance isolation element, in this way, inevasible when adjacent lines failure in major network or enterprise's medium voltage network cause instantaneous loss of pressure
Or under-voltage (referred to as " shaking electricity "), " shaking electricity " time depends on the mute time of adjacent lines failure, about in 200ms or less.It is right
It is discharged in the frequency converter caused by " shaking electricity ", since the voltage acquisition refresh cycle time of microprocessor is greater than power supply instantaneously event
The equipment of restarting of Downtime (such as 200ms), conventional microprocessor mode is responsive to voltage transient because can not quickly capture
Variation, so can not work for 200ms power supply instantaneous loss of pressure below " shaking electricity ".
Frequency converter is widely used in industrial control field, due to the perfect protection feature of frequency converter itself, to some events
Barrier has the function of to automatically reset and restart, but frequency converter producer all provides warning statement to the use of this function, it is not recommended that makes
Be possible to bring after wanting user voluntarily to undertake use leads to the danger of the person and safety, because frequency converter itself does not have
Which judge to automatically reset and restart after failure, which failure is cannot to reset restart, this is just
It needs user voluntarily to judge and use, accepts the consequences by oneself.
Therefore, cause in use, meeting with power supply instantaneous " shaking electricity " when for motor normal operation in daily frequency converter
Frequency converter under-voltage protection tripping the problem of, it is generally the case that needed after power supply restores automatically rely on manually re-operate
Restore motor operation, causes the unnecessary shutdown of motor in operation, make production disruption, this can be to oil, petrochemical industry, chemical industry, electricity
Prodigious economic loss caused by power, metallurgical equicontinuity manufacturing enterprise, even results in safety accident.
Invention content
Based on this, it is necessary to provide one kind can " shake electricity " instantaneous to power supply carry out quick response, accurately identify " shaking electricity "
Failure, and restart frequency converter in time after power supply restores automatically and then restart motor, guarantee continuous production is run electronic
The control method of machine restarting controller and motor restarting controller.
A kind of motor restarting controller, for restarting by inverter control motor, including：Backup power supply
Module, Logic control module, timing module and reseting module；
The backup power supply module is electrically connected the Logic control module and reseting module, for according to the logic control
The control instruction of molding block, external power supply instantaneous loss of pressure or it is under-voltage when, the motor restarting controller is supplied
Electricity；
The reseting module is electrically connected the frequency converter, is resetted for controlling the frequency converter；
The timing module is used for preset time threshold；
A pair of of fortune of the firewire of the power supply, zero curve and the frequency converter is electrically connected in the Logic control module
Row signal normal opened contact, the instantaneous recess amplitude for obtaining the supply voltage, and judge the instantaneous recessed of the supply voltage
Whether sunken amplitude has reached preset amplitude threshold, if so, judging whether the run signal normal opened contact of the frequency converter breaks
It opens, if it is determined that the run signal normal opened contact of the frequency converter disconnects, is then latched the enabled instruction of the frequency converter and detects institute
State whether supply voltage restores；If the supply voltage does not restore yet when the preset time threshold reaches, described in disconnection
Connection between backup power supply module and the reseting module and the enabled instruction for releasing the frequency converter, otherwise control it is described after
Stand-by power source module is powered to the reseting module, and then is controlled the frequency converter and resetted.
Further include output relay module in one of the embodiments, after the output relay module electric connection is described
Stand-by power source module, the Logic control module are latched the enabled instruction of the frequency converter, are after Logic control module control is described
Stand-by power source module is powered to the output relay module, and the startup that then the output relay module is latched the frequency converter refers to
It enables.
Further include online lock modules in one of the embodiments, the online lock modules are electrically connected the change
Frequency device, for being latched to the run signal of the frequency converter when the frequency converter is run.
Further include communication module in one of the embodiments, the communication module is used to carry out network communication with backstage.
The output relay module includes output relay in one of the embodiments, the output relay it is defeated
The manner of execution for going out contact is：Instantaneous to be closed within the scope of the preset time threshold, delay disconnects.
The Logic control module includes in one of the embodiments,：Supply voltage amplitude detection circuit, frequency converter fortune
Row state detection circuit, logic judging circuit and standby power source control circuit, described logic judging circuit one end electrically connect respectively
The supply voltage amplitude detection circuit, frequency converter condition monitoring circuit are connect, the other end is electrically connected the backup power supply
Control circuit；
The supply voltage amplitude detection circuit is electrically connected the firewire and zero curve of the power supply, for detecting the power supply
The instantaneous recess amplitude of voltage is simultaneously transferred to the logic judging circuit；
The frequency converter condition monitoring circuit is electrically connected a pair of of run signal normal opened contact of the frequency converter, uses
In the run signal normal opened contact for detecting the frequency converter state and be transferred to the logic judging circuit；
The logic judging circuit is used to have reached preset width in the instantaneous recess amplitude for detecting the supply voltage
Spend threshold value after, judge whether the run signal normal opened contact of the frequency converter disconnects, if so, judge the frequency converter be by
In power supply instantaneous loss of pressure or under-voltage disconnection；
The standby power source control circuit is used for the control instruction according to the Logic control module, instantaneous in the power supply
Decompression or it is under-voltage when, the backup power supply module is controlled within the scope of the preset time threshold, control is restarted to the motor
Device processed is powered or is powered off.
The supply voltage amplitude detection circuit includes voltage relay and its auxiliary electricity in one of the embodiments,
Road.
In one of the embodiments, the preset amplitude threshold be the normal power voltage amplitude 45%~
55%.
The reseting module includes reset relay in one of the embodiments, the reset relay it is normally opened defeated
Go out the reseting terminal of the contact frequency converter in parallel.
On the other hand, the present invention also proposes a kind of control method of motor restarting controller, for passing through frequency converter
Control motor is restarted, and the motor restarting controller includes backup power supply module, Logic control module, timing mould
Block and reseting module；The backup power supply module is electrically connected the Logic control module and reseting module, the reseting module
It is electrically connected the frequency converter, the timing module is used for preset time threshold, the method includes：
The Logic control module is electrically connected to a pair of of operation of the firewire, zero curve and the frequency converter of power supply
Signal normal opened contact, the Logic control module obtain the instantaneous recess amplitude of supply voltage；
Judge whether the instantaneous recess amplitude of the supply voltage has reached preset amplitude threshold, if so, judging institute
Whether the run signal normal opened contact for stating frequency converter disconnects, if so, being latched described in the enabled instruction of the frequency converter and detection
Whether supply voltage restores；If the supply voltage does not restore yet when the preset time threshold reaches, disconnect it is described after
Connection between stand-by power source module and the reseting module and the enabled instruction for releasing the frequency converter, otherwise control the standby
Power module is powered to the reseting module, and then is controlled the frequency converter and resetted.
Above-mentioned motor restarting controller, including backup power supply module, Logic control module, timing module and reset mould
Block, backup power supply module are used for according to the control instruction of Logic control module, external power supply instantaneous loss of pressure or it is under-voltage when,
Within the scope of preset time threshold (when preset time is reached from beginning timing to preset time threshold), control is restarted to motor
Device is powered.A pair of of run signal that the firewire of power supply, zero curve and frequency converter is electrically connected in Logic control module is normal
Contact is opened, after reaching preset amplitude threshold in the instantaneous recess amplitude for detecting supply voltage, judges frequency converter
Whether run signal normal opened contact disconnects, and (preset time is from timing is started to default if so, within the scope of preset time threshold
Time threshold reach when) locking frequency converter start button so that frequency converter is sent a telegram here to be latched the enabled instruction of frequency converter
Rise.Meanwhile whether Logic control module detection supply voltage restores within the scope of preset time threshold, if so, after control
Stand-by power source module is powered to reseting module, and reseting module sends reset signal and is transferred to frequency converter, and then frequency converter is made to reset；If
No, the connection between backup power supply module and reseting module disconnects and releases the enabled instruction of frequency converter.Due to logic control mould
Block is latched the enabled instruction of frequency converter, and in preset time threshold range interior power voltage once restoring, frequency converter will after resetting
Start immediately, to drive motor to restart.Therefore, above-mentioned motor restarting controller, if frequency converter is because of power supply
Instantaneously " shake electricity " and shuts down, then can " shaking electricity " instantaneous to power supply whether carry out quick response and the shutdown of accurate judgement frequency converter
Strictly power supply instantaneous " shaking electricity " causes, prevent erroneous judgement and caused by frequency converter error starting.It " is shaken if strictly power supply is instantaneous
Frequency converter is shut down caused by electricity ", then within the scope of preset time threshold, control restarts frequency converter and then restarts motor, ensures life
Continuous operation is produced, safety accident is reduced.
Description of the drawings
Fig. 1 is the module map of motor restarting controller in an embodiment；
Fig. 2 is the example elementary diagram of motor restarting controller in an embodiment；
Fig. 3 is the flow chart of the control method of motor restarting controller in an embodiment.
Specific implementation mode
To facilitate the understanding of the present invention, below with reference to relevant drawings to invention is more fully described.In attached drawing
Give the preferred embodiment of the present invention.But the present invention can realize in many different forms, however it is not limited to this paper institutes
The embodiment of description.On the contrary, purpose of providing these embodiments is make it is more thorough and comprehensive to the disclosure.
Unless otherwise defined, all of technologies and scientific terms used here by the article and belong to the technical field of the present invention
The normally understood meaning of technical staff is identical.Used term is intended merely to description tool in the description of the invention herein
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more phases
Any and all combinations of the Listed Items of pass.
Fig. 1 is the module map of motor restarting controller in an embodiment.
In the present embodiment, the motor restarting controller be used for by control frequency converter shutdown after by restarting
Control motor is restarted, which includes backup power supply module 30, Logic control module 10, timing
Module 20 and reseting module 50.
30 one end of backup power supply module is electrically connected Logic control module 10, and the other end is electrically connected reseting module 50, uses
In the control instruction according to Logic control module 10, power supply instantaneous loss of pressure or it is under-voltage when, to motor restarting controller into
Row power supply.
Reseting module 50 is electrically connected frequency converter, is resetted for controlling frequency converter.
Timing module 20 is used for preset time threshold.
Logic control module 10 includes a pair of power source terminals and a pair of input terminals, and a pair of power source terminals is electrically connected
A pair of of run signal normal opened contact of frequency converter is electrically connected in firewire, the zero curve of power supply, a pair of input terminals.Logic control
Module 10 is used to obtain the instantaneous recess amplitude of supply voltage, and it is pre- to judge whether the instantaneous recess amplitude of supply voltage has reached
If amplitude threshold, if so, judge whether the run signal normal opened contact of frequency converter disconnects, if it is determined that the operation letter of frequency converter
Number normal opened contact disconnects, then motor restarting controller, which enters, shakes electric protection working condition, within the scope of preset time threshold
The start button that Logic control module 10 is latched frequency converter allows frequency converter to send a telegram here to be latched the enabled instruction of frequency converter
Rise；Electric protection working condition is shaken if it is not, not entering then, disconnects the connection between backup power supply module 30 and reseting module 50.
Meanwhile Logic control module 10 detects whether supply voltage restores within the scope of preset time threshold, if supply voltage is default
Time threshold does not restore yet when reaching, then disconnects the connection between backup power supply module 30 and reseting module 50 automatically and release change
The enabled instruction of frequency device, frequency converter are shut down, and could be restarted manually after waiting for operating personnel's debugging, otherwise be controlled backup power supply
Module 30 is powered to reseting module 50, and then is controlled frequency converter and resetted.Within the scope of preset time threshold, due to logic control mould
Block 10 is latched the enabled instruction of frequency converter, and supply voltage is once restore, and frequency converter will start immediately after resetting, to drive electricity
Motivation restarts.
Above-mentioned motor restarting controller, including backup power supply module 30, Logic control module 10, timing module 20 and
Reseting module 50, backup power supply module 30 are used for the control instruction according to Logic control module 10, are instantaneously lost in external power supply
When pressing or is under-voltage, within the scope of preset time threshold, motor restarting controller is powered.Logic control module 10 divides
Not electricity Xing Lianjie the firewire of power supply, zero curve and frequency converter a pair of of run signal normal opened contact, for detecting power supply electricity
After the instantaneous recess amplitude of pressure reaches preset amplitude threshold, judge whether the run signal normal opened contact of frequency converter disconnects,
If so, be latched the start button of frequency converter within the scope of preset time threshold makes change to be latched the enabled instruction of frequency converter
Frequency device, which can send a telegram here, to be risen.Meanwhile Logic control module 10 detects whether supply voltage restores within the scope of preset time threshold,
If so, control backup power supply module 30 is powered to reseting module 50, reseting module 50 sends reset signal and is transferred to frequency converter,
And then frequency converter is made to reset；If it is not, the connection between backup power supply module 30 and reseting module 50 disconnects and releases frequency converter
Enabled instruction.Since Logic control module 10 is latched the enabled instruction of frequency converter, in preset time threshold range interior power voltage
Once restoring, frequency converter will start immediately after resetting, to drive motor to restart.Therefore, above-mentioned motor opens again
Movement controller can " shaking electricity " progress quick response instantaneous to power supply if frequency converter is shut down because power supply instantaneously " shakes electricity "
And whether it is strictly power supply instantaneous " shaking electricity " that accurate judgement frequency converter is shut down causes, prevent erroneous judgement and caused by frequency converter accidentally open
It is dynamic.If strictly power supply is instantaneous, frequency converter caused by " shaking electricity " is shut down, and within the scope of preset time threshold, frequency conversion is restarted in control
Device restarts motor in turn, and guarantee continuous production operation is shut down if not frequency converter caused by power supply instantaneous " shaking electricity ", then controlled
System will not restart frequency converter, to reduce safety accident.
In one embodiment, which includes also exporting relay module 40, exports relay module
40 are electrically connected backup power supply module 30, and Logic control module 10 is latched the enabled instruction of frequency converter, is Logic control module 10
Control backup power supply module 30 is powered to output relay module 40 within the scope of preset time threshold, and output relay module 40 obtains electric
It is latched the enabled instruction of frequency converter later.
In one embodiment, 20 one end of timing module is electrically connected Logic control module 10, after the other end is electrically connected
Stand-by power source module 30, for the control instruction according to Logic control module 10, control backup power supply module 30 opens motor again
Movement controller is powered or is powered off.
In one embodiment, timing module 20 is electrically connected Logic control module 10, and timing module 20 is used for logic
Control module 10 provides preset time threshold, and Logic control module 10 controls backup power supply module within the scope of preset time threshold
30 pairs of motor restarting controllers are powered or power off.
In one embodiment, which further includes online lock modules (not shown), online
Lock modules are electrically connected the run signal terminal of frequency converter, for being carried out to the run signal of frequency converter when frequency converter is run
Locking, in the case where shaking electric protection working condition, it is ensured that the run signal of frequency converter still in on-line mode, for after power up again
Startup creates conditions.
In one embodiment, which further includes communication module (not shown), communication module
For carrying out network communication with backstage.Network communication is carried out by the ports RJ485 and backstage in one of the embodiments,.
In one embodiment, which further includes intermediate relay module (not shown), logic
Control module 10 controls backup power supply module 30 by controlling intermediate relay module.
In one embodiment, output relay module 40 includes output relay, and the output contact of output relay moves
It is as mode：Instantaneous to be closed within the scope of preset time threshold, delay disconnects.
In one embodiment, reseting module 50 includes reset relay, and the normally opened output contact of reset relay is in parallel
The reseting terminal of frequency converter.Reset relay one obtains the electric reseting terminal that will give frequency converter and sends out in one of the embodiments,
Pulse reset signal is sent, to make frequency converter reset.
In one embodiment, timing module 20 includes at least curing or passing through digital display device hardening time in manufacture
The time relay circuit of parameter, time parameter include preset time threshold.
In one embodiment, the Logic control module 10 includes：Supply voltage amplitude detection circuit, frequency converter operation
Power supply is electrically connected in state detection circuit, logic judging circuit and standby power source control circuit, logic judging circuit one end
Voltage magnitude detection circuit, frequency converter condition monitoring circuit, the other end are electrically connected standby power source control circuit；
Supply voltage amplitude detection circuit is electrically connected the firewire and zero curve of power supply, for detecting the instantaneous recessed of supply voltage
It falls into amplitude and is transferred to logic judging circuit；
Frequency converter condition monitoring circuit is electrically connected a pair of of run signal normal opened contact of frequency converter, for examining in real time
It surveys the state of the run signal normal opened contact of frequency converter and is transferred to logic judging circuit；
Logic judging circuit for judging whether the instantaneous recess amplitude of supply voltage has reached preset amplitude threshold, if
It is then to judge whether the run signal normal opened contact of frequency converter disconnects：If so, judgement frequency converter is due to power supply instantaneous loss of pressure
Or under-voltage disconnection, control instruction is further sent, motor restarting controller, which enters, shakes electric protection working condition, if it is not, then
Judgement frequency converter is not due to power supply instantaneous loss of pressure or under-voltage disconnection, does not enter and shakes electric protection working condition.
Standby power source control circuit is used for according to the control instruction of Logic control module, in power supply instantaneous loss of pressure or under-voltage
When, control backup power supply module 30 is powered or breaks to motor restarting controller within the scope of preset time threshold
Electricity.
In one embodiment, supply voltage amplitude detection circuit includes voltage relay and its auxiliary circuit.
In one embodiment, supply voltage amplitude detection circuit is additionally operable to the instantaneous change of detection supply voltage recess amplitude
Change amount, logic judging circuit are used to have reached preset slope threshold value according to the transient change amount of supply voltage recess amplitude, and
It is happened at before instantaneous recess amplitude reaches preset amplitude threshold, judges the change that frequency converter condition monitoring circuit detects
Whether the run signal normal opened contact of frequency device disconnects, if so, judgement frequency converter is due to power supply instantaneous loss of pressure or under-voltage disconnection.
In one embodiment, preset amplitude threshold is the 45%~55% of normal power voltage amplitude, preset oblique
Rate threshold value is 10~20%.
In one embodiment, super capacitor built in backup power supply module 30 has long service life.
Fig. 2 is the example elementary diagram of motor restarting controller in an embodiment.
In the present embodiment, three-phase coil L1, L2, L3, three-phase breaker MCCB, fuse Fuse, frequency converter VVVF and
Motor M forms major loop, the control loop of motor recurrence movement controller DZQ-B5X/L parallel connection frequency conversion devices, motor recurrence
Movement controller includes multiple contacts.
1st contact and the 2nd contact：Be motor recurrence movement controller Logic control module a pair of power source terminals, the 1st
Input powers of the firewire L of contact connection control power supply as DZQ-B, the 2nd contact connect zero curve, consider the guarantor to electronic device
Shield, the 2nd contact answer reliable ground.The docking point is also the test point for detecting mains voltage variations, acquires and detects supply voltage
Instantaneous recess amplitude.
3rd contact and the 4th contact：It is a pair of input terminals of the Logic control module of motor recurrence movement controller, inspection
The input contact for surveying the operating status of frequency converter, a pair of of the run signal for accessing the operating instruction relay KM of frequency converter normally opened connect
Point, the 1st contact and the 2nd contact have the input of standard working power, after frequency converter starts operation, the operating instruction relay of frequency converter
KM obtains electric actuation, then a pair of of run signal normal opened contact of the 3rd contact and the operating instruction relay KM of the 4th contact access close
It closes, motor recurrence movement controller internal electric source is switched on, and shows frequency converter operating instruction relay KM in attracting state, electronic
Machine normal operation.When the 3rd contact and the 4th contact disconnect, then the operation of the 3rd contact of judgement and the frequency converter of the 4th contact access refers to
A pair of of run signal normal opened contact of relay KM is enabled to disconnect, frequency converter is shut down.Logic control module further judges frequency converter
Whether shut down is that instantaneously " rolling electricity " causes power supply.If it is determined that frequency converter caused by being power supply " shaking electricity " is shut down, then motor opens again
Movement controller, which enters, shakes electric protection working condition, and backup power supply module is controlled within the scope of preset time threshold and gives output relay mould
Block is powered, to be latched the enabled instruction of frequency converter.If it is determined that be not that frequency converter is shut down caused by power supply " shake electricity ", then motor
Restarting controller, which does not enter, shakes electric protection working condition, disconnects backup power supply module and exports the connection between relay module.
5th contact and the 6th contact：It is the normally opened output contact of the output relay module of motor recurrence movement controller, and
It is associated in the start button both ends of frequency converter.If it is determined that being that frequency converter caused by power supply shakes electric reason is shut down, in preset time threshold
Backup power supply module gives output relay module power supply in range, output relay module obtain it is electric after, the 5th contact and the 6th contact are vertical
It is closed, to be latched the enabled instruction of frequency converter, waits for and restart frequency converter after shaking electricity.In other embodiments, also may be used
To there is multipair locking contact.
7th contact and the 8th contact：It is the normally opened output contact of the reseting module of motor recurrence movement controller, is connected in parallel on
The reseting terminal both ends of frequency converter.Within the scope of preset time threshold, Logic control module detects supply voltage when default
Between restore in threshold range, then control backup power supply module and give reseting module power supply, the 7th contact of reseting module and the 8th contact
Electric closure is obtained, by the low voltage failure remote reset of frequency converter, simultaneously because the 5th contact and being closed in limited time for the 6th contact make change
The operating instruction relay KM of frequency device starting-up later time turn on automatically, frequency converter obtains electric actuation, and frequency converter resumes operation automatically, again
Into normal operating conditions, to drive motor restarting to enter normal operating conditions.In one embodiment, mould is resetted
Block, which sends reseting pulse signal, makes the low voltage failure remote reset of frequency converter, and the number of reseting pulse signal can be one
Can be multiple.In other embodiments, it is possibility to have multipair reset contact.
11st contact and the 12nd contact：It is the normally opened output contact of the online lock modules of motor recurrence movement controller,
The run signal terminal both ends of frequency converter are connected in parallel on, in the case where shaking electric protection working condition, it is ensured that the run signal of frequency converter is still located
In on-line mode, it is again started up and creates conditions for frequency converter after power up.
13rd contact and the 14th contact：It is the normally opened output contact of motor recurrence movement controller, is connected in parallel on frequency converter
Run signal terminal both ends, the online run signal for being latched frequency converter and being sent to backstage, in the case where shaking electric protection working condition, it is ensured that
The run signal of frequency converter is still in on-line mode, it is ensured that will not send out chain jump vehicle instruction from the background, be frequency conversion after power up
Device, which is again started up, to create conditions.
15th contact and the 16th contact：It is the communication terminal of motor recurrence movement controller, for carrying out network with backstage
Communication.In one embodiment, the interface of the communication terminal is RJ485 interfaces.
The course of work：1st contact and the 2nd contact have the input of standard working power, after frequency converter starts operation, the 3rd contact
It is closed with the run signal normal opened contact of the operating instruction relay KM of a pair of of frequency converter of the 4th contact access, is connected in parallel at this time
5th contact and the 6th contact at the enabled instruction both ends of frequency converter are normally open, are not closed.7th contact and the 8th contact are
Normally open is not closed.It is connected in parallel on frequency converter run signal terminal and is delivered to the 11st contact and the 12nd contact, on backstage
13 contacts and the 14th contact timing closing.
Instantaneous recess or temporarily drop (" shaking electricity ") occur for standard working power, when recess amplitude reaches preset amplitude threshold
Later, frequency converter protection act and shut down, the 3rd contact and the 4th contact disconnect.If Logic control module judgement, which is power supply, shakes electricity
Frequency converter caused by reason is shut down, then motor restarting controller, which enters, shakes electric protection working condition, in preset time threshold
Control backup power supply module gives output relay module power supply in range, output relay module obtain it is electric after, the 5th contact and the 6th connects
Point is closed immediately, to be latched the enabled instruction of frequency converter, while the 11st contact and the 12nd contact, the 13rd contact and the 14th contact
Still in closed state, it is ensured that frequency converter run signal will not send out chain jump vehicle still in on-line mode and backstage and instruct, and be
It is again started up and creates conditions after power up.If frequency converter caused by Logic control module judgement is not the electric reason of power supply rolling stops
Frequency converter caused by machine, such as orderly closedown or other failures is shut down, then motor restarting controller, which will not enter, shakes electricity
Working condition is protected, backup power supply module is disconnected and exports the connection between relay module, reseting module, the 5th contact and the 6th connects
Point is still normally open, is not closed, the 7th contact and the 8th contact still maintain a normally open state, and 11-12 contacts and 13-14 contacts are then
It disconnects immediately, does not interfere with frequency converter caused by orderly closedown or other failures and shut down.
Within the scope of preset time threshold, Logic control module detects that supply voltage is restored to normal working voltage, control
Backup power supply module processed is powered to reseting module, and the 7th contact of reseting module and the 8th contact obtain electric closure, by the low of frequency converter
Voltage failure remote reset, simultaneously because the 5th contact and being closed in limited time for the 6th contact make frequency converter starting-up later time turn on automatically,
The operating instruction relay KM of frequency converter obtains electric actuation, and frequency converter resumes operation automatically, is again introduced into normal operating conditions, to
Motor restarting is driven to enter normal operating conditions.
Within the scope of preset time threshold, if Logic control module detects that supply voltage does not return to normal work electricity
Pressure, backup power supply module disconnects automatically, other module for power supply, the 5th contact and the delay of the 6th contact is no longer given to disconnect, the 7th contact and
8th contact, which automatically terminates, to be exported again, and the 11st contact and the 12nd contact, the 13rd contact and the 14th contact are also delayed disconnection, electricity
Motivation restarting controller is closed.It shakes electric protection state to automatically terminate, if supply voltage then returns to normally later
It will not be acted when operating voltage.
Therefore, above-mentioned motor restarting controller can be right if frequency converter is shut down because of power supply instantaneous " shaking electricity "
Whether it is strictly power supply instantaneous " shaking electric " that instantaneous " shaking electricity " the progress quick response of power supply and accurate judgement frequency converter are shut down causes,
Prevent erroneous judgement and caused by frequency converter error starting.If strictly power supply is instantaneous, frequency converter caused by " shaking electricity " is shut down, and is preset
Within the scope of time threshold, control restarts frequency converter and then restarts motor, and guarantee continuous production operation is instantaneous if not power supply
Frequency converter caused by " shaking electricity " is shut down, then control will not restart frequency converter, to reduce safety accident.
On the other hand, the present invention also proposes a kind of control method of motor restarting controller, for being become by controlling
Restarting after the shutdown of frequency device controls restarting for motor in turn, which includes backup power supply module
30, Logic control module 10, timing module 20 and reseting module 50.30 one end of backup power supply module is electrically connected logic control mould
Block 10, the other end are electrically connected reseting module 50, for the control instruction according to Logic control module 10, in external power supply wink
When decompression or it is under-voltage when, motor restarting controller is powered.Reseting module 50 is electrically connected frequency converter, for controlling
Frequency converter is resetted.Timing module 20 is used for preset time threshold.The fire of power supply is electrically connected in Logic control module 10
A pair of of run signal normal opened contact of line, zero curve and frequency converter.
Incorporated by reference to Fig. 1, in the present embodiment, the control method of the motor restarting controller includes：
S100, Logic control module obtain the instantaneous recess amplitude of supply voltage.
S200, judges whether instantaneous recess amplitude has reached preset amplitude threshold.
Logic control module 10 judges whether the instantaneous recess amplitude of supply voltage has reached preset amplitude threshold, if wink
When recess amplitude have reached preset amplitude threshold, then enter step S300.
S300 judges whether the run signal normal opened contact of frequency converter is already off.
Logic control module 10 be used for the instantaneous recess amplitude for detecting supply voltage reach preset amplitude threshold it
Afterwards, judge whether the run signal normal opened contact of frequency converter disconnects, if the run signal normal opened contact of frequency converter is already off,
Motor restarting controller, which enters, shakes electric protection working condition, enters step S400, does not otherwise enter and shakes electric protection work shape
State.
S400 is latched the enabled instruction of frequency converter and detects whether supply voltage restores within the scope of preset time threshold.
Logic control module 10 is latched the start button of frequency converter within the scope of preset time threshold, to be latched frequency converter
Enabled instruction, so that frequency converter is sent a telegram here i.e. and rise.Meanwhile Logic control module 10 detects supply voltage in preset time threshold
Whether restore in range, if supply voltage is restored to normal voltage within the scope of preset time threshold, controls backup power supply mould
Block 30 is powered to reseting module 50, and reseting module 50 sends reset signal and is transferred to frequency converter, and then frequency converter is made to reset, and
Since Logic control module 10 is latched the enabled instruction of frequency converter, in preset time threshold range interior power voltage once restoring,
Frequency converter will start immediately after resetting, to drive motor to restart.If supply voltage is in preset time threshold range
Normal voltage (i.e. supply voltage does not recover to normal voltage still when preset time threshold reaches) is not returned to inside, then automatically
It disconnects the connection between backup power supply module 30 and reseting module 50 and releases the enabled instruction for the frequency converter being latched before, frequency conversion
Device is shut down, and could be restarted manually after waiting for operating personnel's debugging.
In one embodiment, preset amplitude threshold whether is had reached in the instantaneous recess amplitude for judging supply voltage
Before step, further include：
Instantaneously recess amplitude reach preset amplitude threshold before, judge supply voltage amplitude transient change amount whether
Reach preset slope threshold value.
Therefore, the control method of above-mentioned motor restarting controller, can " shake electricity " instantaneous to power supply quickly rung
It answers and whether the shutdown of accurate judgement frequency converter is strictly that instantaneously " rolling electricity " causes power supply.The run signal normal opened contact of frequency converter
After disconnection, only frequency converter is shut down because of power supply instantaneous " shaking electricity ", and supply voltage is restored within the scope of preset time threshold
In the case of normal voltage, just control, which is restarted, frequency converter and then restarts motor, prevent erroneous judgement and caused by frequency converter error starting,
Guarantee continuous production is run.It is shut down if not frequency converter caused by power supply instantaneous " shaking electricity ", then control will not restart frequency converter,
To reduce safety accident.
Each technical characteristic of embodiment described above can be combined arbitrarily, to keep description succinct, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, it is all considered to be the range of this specification record.
Several embodiments of the invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Range.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of motor restarting controller, for restarting by inverter control motor, which is characterized in that packet
It includes：Backup power supply module, Logic control module, timing module and reseting module；
The backup power supply module is electrically connected the Logic control module and reseting module, for according to the logic control mould
The control instruction of block, external power supply instantaneous loss of pressure or it is under-voltage when, the motor restarting controller is powered；
The reseting module is electrically connected the frequency converter, is resetted for controlling the frequency converter；
The timing module is used for preset time threshold；
A pair of of operation letter of the firewire of the power supply, zero curve and the frequency converter is electrically connected in the Logic control module
Number normal opened contact, the instantaneous recess amplitude for obtaining the supply voltage, and judge the instantaneous recess width of the supply voltage
Whether value has reached preset amplitude threshold, if so, judge whether the run signal normal opened contact of the frequency converter disconnects, if
Judge that the run signal normal opened contact of the frequency converter disconnects, is then latched the enabled instruction of the frequency converter and detects the power supply
Whether voltage restores；If the supply voltage does not restore yet when the preset time threshold reaches, the standby electricity is disconnected
Connection between source module and the reseting module and the enabled instruction for releasing the frequency converter, otherwise control the backup power supply
Module is powered to the reseting module, and then is controlled the frequency converter and resetted.
2. motor restarting controller according to claim 1, which is characterized in that further include output relay module, institute
It states output relay module and is electrically connected the backup power supply module, the startup that the Logic control module is latched the frequency converter refers to
It enables, is that the Logic control module control backup power supply module is powered to the output relay module, then the output relay
Module is latched the enabled instruction of the frequency converter.
3. motor restarting controller according to claim 1, which is characterized in that further include online lock modules, institute
It states online lock modules and is electrically connected the frequency converter, be used for when the frequency converter is run to the run signal of the frequency converter
It is latched.
4. motor restarting controller according to claim 1, which is characterized in that further include communication module, it is described logical
Module is interrogated to be used to carry out network communication with backstage.
5. motor restarting controller according to claim 2, which is characterized in that the output relay module includes defeated
Go out relay, the manner of execution of the output contact of the output relay is：Within the scope of the preset time threshold, instantaneously close
It closes, delay disconnects.
6. motor restarting controller according to claim 1, which is characterized in that the Logic control module includes：
Supply voltage amplitude detection circuit, frequency converter condition monitoring circuit, logic judging circuit and standby power source control circuit, institute
It states logic judging circuit one end and the supply voltage amplitude detection circuit, frequency converter condition monitoring electricity is electrically connected
Road, the other end are electrically connected the standby power source control circuit；
The supply voltage amplitude detection circuit is electrically connected the firewire and zero curve of the power supply, for detecting the supply voltage
Instantaneous recess amplitude and be transferred to the logic judging circuit；
The frequency converter condition monitoring circuit is electrically connected a pair of of run signal normal opened contact of the frequency converter, for examining
It surveys the state of the run signal normal opened contact of the frequency converter and is transferred to the logic judging circuit；
The logic judging circuit is used to have reached preset amplitude threshold in the instantaneous recess amplitude for detecting the supply voltage
After value, judge whether the run signal normal opened contact of the frequency converter disconnects, if so, judging that the frequency converter is due to electricity
Source instantaneous loss of pressure or under-voltage disconnection；
The standby power source control circuit is used for the control instruction according to the Logic control module, in the power supply instantaneous loss of pressure
Or when under-voltage, the backup power supply module is controlled within the scope of the preset time threshold to the motor restarting controller
It is powered or is powered off.
7. motor restarting controller according to claim 6, which is characterized in that the supply voltage amplitude detection electricity
Road includes voltage relay and its auxiliary circuit.
8. motor restarting controller according to claim 1, which is characterized in that the preset amplitude threshold is institute
State the 45%~55% of normal power voltage amplitude.
9. motor restarting controller according to claim 1, which is characterized in that the reseting module include reset after
Electric appliance, the reseting terminal of the normally opened output contact frequency converter in parallel of the reset relay.
10. a kind of control method of motor restarting controller, special for restarting by inverter control motor
Sign is that the motor restarting controller includes backup power supply module, Logic control module, timing module and resets mould
Block；The backup power supply module is electrically connected the Logic control module and reseting module, and the reseting module is electrically connected institute
Frequency converter is stated, the timing module is used for preset time threshold, the method includes：
The firewire of power supply, a pair of of run signal of zero curve and the frequency converter is electrically connected in the Logic control module
Normal opened contact, the Logic control module obtain the instantaneous recess amplitude of supply voltage；
Judge whether the instantaneous recess amplitude of the supply voltage has reached preset amplitude threshold, if so, judging the change
Whether the run signal normal opened contact of frequency device disconnects, if so, being latched the enabled instruction of the frequency converter and detecting the power supply
Whether voltage restores；If the supply voltage does not restore yet when the preset time threshold reaches, the standby electricity is disconnected
Connection between source module and the reseting module and the enabled instruction for releasing the frequency converter, otherwise control the backup power supply
Module is powered to the reseting module, and then is controlled the frequency converter and resetted.
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| CN201810355877.0A CN108448946B (en) | 2018-04-19 | 2018-04-19 | Motor restart controller and control method of motor restart controller |
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| CN109889104A (en) * | 2019-04-25 | 2019-06-14 | 高松锋 | Voltage shock avoiding soft starter device |
| CN110912391A (en) * | 2019-12-03 | 2020-03-24 | 深圳市倍通控制技术有限公司 | Frequency converter restarting method and restarting device |
| CN110995061A (en) * | 2019-11-22 | 2020-04-10 | 中国核电工程有限公司 | Linkage control method for realizing automatic starting of power-off and power-on of motor equipment |
| CN112350888A (en) * | 2020-10-23 | 2021-02-09 | 英业达科技有限公司 | Starting state detection system and method thereof |
| CN112701964A (en) * | 2020-12-23 | 2021-04-23 | 程涛 | Restarting controller for motor |
| CN113364354A (en) * | 2021-06-05 | 2021-09-07 | 深圳市倍通控制技术有限公司 | Motor restart control method and controller thereof |
| CN113464481A (en) * | 2021-08-23 | 2021-10-01 | 小熊电器股份有限公司 | Desktop fan, and power-off protection control method and device for desktop fan |
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| CN112701964A (en) * | 2020-12-23 | 2021-04-23 | 程涛 | Restarting controller for motor |
| CN113364354A (en) * | 2021-06-05 | 2021-09-07 | 深圳市倍通控制技术有限公司 | Motor restart control method and controller thereof |
| CN113464481A (en) * | 2021-08-23 | 2021-10-01 | 小熊电器股份有限公司 | Desktop fan, and power-off protection control method and device for desktop fan |
| CN113852303A (en) * | 2021-09-27 | 2021-12-28 | 深圳市倍通控制技术有限公司 | Motor restart controller and control method of motor restart controller |
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