CN109412467A - A kind of soft starter for motor control device - Google Patents
A kind of soft starter for motor control device Download PDFInfo
- Publication number
- CN109412467A CN109412467A CN201811557671.2A CN201811557671A CN109412467A CN 109412467 A CN109412467 A CN 109412467A CN 201811557671 A CN201811557671 A CN 201811557671A CN 109412467 A CN109412467 A CN 109412467A
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- Prior art keywords
- microcontroller
- motor
- connect
- output
- starting
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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
- H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
- H02P1/26—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual polyphase induction motor
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
The present invention relates to a kind of soft starter for motor control devices, it includes the microcontroller that center control is carried out to single unit system；The SS (soft start) control circuit of a variety of starting control models is carried out to motor according to the control instruction of microcontroller；Realize the input port module of data input；Realize the output port module of data output；Realize the man-machine interaction panel for being artificially manually entered control instruction；Input port module is connect with microcontroller input, and the output end of microcontroller is connect with output port module；Output port module is connect with SS (soft start) control circuit；The input terminal of the port I/O of the output end and microcontroller of man-machine interaction panel connects.Closed-loop control is realized by silicon-controlled (SCR), and user can select different start-up modes according to loading condition, realize the starting effect of absolutely smooth no torque oscillation；It is comprehensive that motor and relevant device are protected with defencive functions such as input and output phase shortage, overload, overcurrent, phase current imbalance, silicon-controlled excess temperatures.
Description
Technical field
The present invention relates to technical field of electric equipment more particularly to a kind of soft starter for motor control devices.
Background technique
At present the Starting mode of motor mostly use greatly directly initiate, star/delta starting and auto-coupling voltage-reduction starting etc. pass
Unite Starting mode, and these Starting mode can cause it is mechanical with electrical impact the problems such as, the service life of motor is generated greatly
Ground influences；Soft starter for motor is a kind of New-type electric machine starting for combining power electronic technique, microcontroller and automatic control
And protective device, it can be effectively reduced starting current and distribution capacity, had greatly compared with traditional electric motor starting mode
Advantage.
Summary of the invention
For the deficiency in the presence of the prior art, the present invention provides a kind of soft starter for motor control devices, solve
Existing electric motor starting mode there are the problem of.
To achieve the above object, present invention employs the following technical solutions: a kind of soft starter for motor control device, it is wrapped
Include the microcontroller that center control is carried out to single unit system；Motor is carried out according to the control instruction of the microcontroller a variety of
Start the SS (soft start) control circuit of control model；Realize the input port module of data input；Realize the output end of data output
Mouth mold block；Realize the man-machine interaction panel for being artificially manually entered control instruction；
The input port module is connect with the microcontroller input, the output end of the microcontroller and institute
State the connection of output port module；The output port module is connect with the SS (soft start) control circuit；The human-computer interaction
The output end of panel is connect with the input terminal of the port I/O of the microcontroller.
The output port module include the bypass output port being connect with the SS (soft start) control circuit, it is programmable after
Electricity output port, failure output terminal mouth and DC analogue quantity output port.
The input port module include protected in control device soft start wink stopping transportation inbound port and with institute
State the external control starting port of wink stopping transportation inbound port connection.
The starting control model includes threshold currents start-up mode, voltage ramp start-up mode, kick start-up mode, electric current
Slope start-up mode and voltage current limliting two close cycles start-up mode.
The SS (soft start) control circuit includes that a breaker, a bypass contactor and one are silicon-controlled；The breaker
Input terminal connect with three-phase electricity source, output end is connected with the silicon-controlled input terminal；The silicon-controlled output end
It is connected to motor；One end of the bypass contactor is connect with the output end of the breaker, and the other end and the motor connect
It connects, realizes that the bypass contactor silicon-controlled is connected in parallel with described.
The man-machine interaction panel includes starting stop key, set key, acknowledgement key, successively decrease key and display surface
Plate；The starting stop key time operates for starting operation, stopping operation with failure reset when panel operation is effective；
The set key, which is realized, enters setting menu；The acknowledgement key realizes the supplemental characteristic of confirmation modification；It is described incremental to pass
Subtract the incremental decrement operations that key realizes parameter item or data；The display panel is realized to control device operating status sum number
According to display.
Compared with the prior art, the invention has the following beneficial effects:
1, closed-loop control is realized by silicon-controlled (SCR), user can select different start-up modes according to loading condition, real
The now starting effect of absolute smooth no torque oscillation；
2, there is the defencive functions such as input and output phase shortage, overload, overcurrent, phase current imbalance, silicon-controlled excess temperature, Quan Fang
Position is protected by motor and relevant device；
3, remote operation can be realized by the interface of device, scene is facilitated to use and be capable of the work of whole day monitoring device
Situation provides rapid failure diagnosis simultaneously.
Detailed description of the invention
Fig. 1 is the schematic diagram of device；
Fig. 2 is limited current start ideograph；
Fig. 3 is voltage ramp start-up mode figure；
Fig. 4 is kick start-up mode figure；
Fig. 5 is current ramp start-up mode figure；
Fig. 6 is SS (soft start) control circuit figure.
Specific embodiment
Following further describes the present invention with reference to the drawings.
As shown in Figure 1, a kind of soft starter for motor control device of the present invention, it includes carrying out center to single unit system
The microcontroller of control；The soft start of a variety of starting control models is carried out to motor according to the control instruction of the microcontroller
Control circuit；Realize the input port module of data input；Realize the output port module of data output；It realizes artificial manual
The man-machine interaction panel of input control instruction；
The input port module is connect with the microcontroller input, the output end of the microcontroller and institute
State the connection of output port module；The output port module is connect with the SS (soft start) control circuit；The human-computer interaction
The output end of panel is connect with the input terminal of the port I/O of the microcontroller.
The output port module include the bypass output port being connect with the SS (soft start) control circuit, it is programmable after
Electricity output port, failure output terminal mouth and DC analogue quantity output port.
Preferably, microcontroller has speed fast, smart using 32 kernel single-chip microcontroller implementation center controls of Cortex-M3
The characteristics of degree height and strong antijamming capability.
Preferably, bypass output port includes terminal 1 and terminal 2, and terminal 1 and terminal 2 are connected by a switch, be used for
Bypass contactor is controlled, is normally opened passive contact, soft start is closed when completing, contact capacity AC:250V/5A.It is programmable after
Electricity output port includes terminal 3 and terminal 4, and terminal 3 and terminal 4 are by a switch connection, and the way of output and function are by parameter PJ
(programming output) setting, is normally opened passive contact, contact capacity AC:250V/5A.Failure output terminal mouth includes terminal 5 and end
Son 6, terminal 5 and terminal 6 are connected by a switch, are broken down in soft start or closure when power loss, are broken when working properly
It opens, is passive contact, contact capacity AC:250V/3A.DC analogue quantity output port includes terminal 11 and terminal 12, terminal
11 connect power cathode, and terminal 12 connects positive pole, and for monitoring current of electric in real time, when full scale 20mA indicates electronic electric current
Be four times of soft activator nominal rating electric current, can the observation of external 0-20mA DC ammeter, output load resistance maximum value
It is 300 ohm.
The input port module include protected in control device soft start wink stopping transportation inbound port and with institute
State the external control starting port of wink stopping transportation inbound port connection.
Preferably, external control starting port includes terminal 8, terminal 9 and terminal 10, and wherein terminal 8 is to stop connecting terminal,
Terminal 9 is starting connecting terminal, and terminal 10 is common terminal；It includes the three line modes of connection and two wires that external control, which starts port,
The mode of connection, the three line modes of connection be terminal 8 and terminal 9 connect respectively one switch after, the two wires mode of connection in parallel with terminal 10
It is in parallel with terminal 10 again for one switch of connection after the first parallel connection of terminal 8 and terminal 9.Wink, stopping transportation inbound port included terminal 7, soft start
Terminal 7 must be shorted with terminal 10 when normal work, if terminal 7 and terminal 10 are opened a way, soft start will unconditionally stop work
Make, be in failsafe state, terminal 7 can the controlled normal contact with external protector, parameter setting PC (permit by output protection
When perhaps) being 0 (primary protection), terminal 7 will be prohibited.
The starting control model includes threshold currents start-up mode, voltage ramp start-up mode, kick start-up mode, electric current
Slope start-up mode and voltage current limliting two close cycles start-up mode.
Preferably, as shown in Fig. 2, when parameter PB (Starting mode) is set as 0, start-up mode is limited current start mode；
Threshold currents start the current of electric situation of change of mode, and I1 is the starting cut-off current of setting, when electric motor starting, output voltage
It increases sharply, until current of electric reaches the cut-off current I1 of setting, and keeps motor current no more than the value, then as
Voltage gradually rises, and motor ramps up, and when reaching motor rated speed, output electric current is dropped rapidly to Rated motor
Electric current Ie or hereinafter, bypass contactor actuation, starting process completion.When motor load is larger compared with light or setting cut-off current
When, maximum current when starting belongs to normal when the cut-off current of setting may also be not achieved.
Preferably, as shown in figure 3, when parameter PB (Starting mode) is 1, start-up mode is voltage ramp start-up mode；
Wherein U1 is initial voltage value when starting, when electric motor starting, in the range of current of electric is no more than 400%, and starter
Output voltage rise very rapidly up to U1, then output voltage is gradually increasing by set start-up parameter, and motor is with voltage
Rise constantly steady acceleration, when voltage reaches voltage rating Ue, motor reaches rated speed, and bypass contactor is attracted, and starts
Process is completed.Starting time t be according to standard termination under standard laboratory conditions resulting control parameter, pass through control output
Voltage accelerates motor steadily to complete starting process, and non-mechanical control time t regardless of motor accelerate it is whether steady,
Therefore in light load, the starting time is often below the starting time set, belongs to normal as long as it can smoothly start.
Preferably, as shown in figure 4, when parameter PB (Starting mode) is 2 or 3, start-up mode is kick start-up mode；
Under certain heavily loaded occasions, due to mechanical stiction influence and when fail to start motor, such mode can be selected,
When starting, a higher fixed voltage first is applied to motor and continues limited a period of time, to overcome the quiet of motor load
Frictional force rotates motor, then starts in the way of threshold currents (Fig. 2) or voltage ramp (Fig. 3).Before with this mode, first
Motor is started with non-kick mode, if motor is very much not able to rotate very much because of stiction, then this mode is selected, otherwise should be avoided
It is started using this mode, to reduce unnecessary heavy current impact.
Preferably, as shown in figure 5, when parameter PB (Starting mode) is 4, start-up mode is current ramp start-up mode；
Wherein I1 is the cut-off current of P6 setting, and T1 is the time value of P1 setting.Current ramp, which starts mode, has stronger acceleration energy
Power is suitable for 2 grades of motors, can also shorten in a certain range the starting time.
Preferably, when parameter PB (Starting mode) is 6, start-up mode is voltage current limliting two close cycles start-up mode；Voltage
Current limliting two close cycles are started mode and are controlled using voltage ramp and threshold currents two close cycles circuit.The starting mode is applied to heavy duty electricity
Initial voltage can be improved (maximum setting is up to 70%) simultaneously and current limliting increases (cut-off current can be increased to 500%) by machine.
As shown in fig. 6, the SS (soft start) control circuit includes that a breaker, a bypass contactor and one are silicon-controlled；Institute
The input terminal for the breaker stated is connect with three-phase electricity source, and output end is connected with the silicon-controlled input terminal；Described is controllable
The output end of silicon is connected to motor；One end of the bypass contactor is connect with the output end of the breaker, the other end with
Motor connection realizes that the bypass contactor silicon-controlled is connected in parallel with described.
The man-machine interaction panel includes starting stop key, set key, acknowledgement key, successively decrease key and display surface
Plate；The starting stop key time operates for starting operation, stopping operation with failure reset when panel operation is effective；
The set key, which is realized, enters setting menu；The acknowledgement key realizes the supplemental characteristic of confirmation modification；It is described incremental to pass
Subtract the incremental decrement operations that key realizes parameter item or data；The display panel is realized to control device operating status sum number
According to display.
Preferably, start stop key, during soft, display panel shows that XXXX indicates starting current value, at this time only
There is stop key to work, not can enter setting and helping prompt menu, prepare simultaneously, runs, three indicator lights of failure are not
Bright, during soft stop, display window shows that XXXX indicates motor current value, only starts key at this time and works, not can enter
Setting and helping prompt menu, prepare simultaneously, run, and three indicator lights of failure do not work, and stop key has reset malfunction concurrently
Function.
Set key enters setting menu by set key under non-help state, shows PX:XXX, then press set key, emits
It number flashes, expression can modify the subsequent parameter of colon, show by acknowledgement key if data are modified when colon is flashed
Good, and two sound of cipher indicate that new data has been saved, are then log out.If not want to save new data, by set key, emit
Number stopping is flashed, while restoring original data, then exit by acknowledgement key, can also be exited by stop key.
Acknowledgement key enters help menu by acknowledgement key, shows HX:XXX, then exit by acknowledgement key under non-setting state,
It can also be exited by stop key.Under setting state, new data is saved by acknowledgement key and exits setting state.
Successively decrease key, and in setting menu, when colon does not dodge, pressing the key that successively decreases can change functional parameter number, emit
Pressing the key that successively decreases when number flashing can change data, and when pinning the key that successively decreases and being more than 1 second, data quickly will continuously increase and decrease.
The key that successively decreases is pressed in help menu can change functional parameter number and corresponding prompt information content.In bypass operation instruction
When lamp is bright, and setting and head of a secret society's menu are not entered, then show AXXXX, indicated motor operating current, press the key that successively decreases at this time,
Display PXXXX or HXXXX, PXXXX can be successively selected to indicate motor apparent energy, HXXXX indicates motor overload thermal balance system
Number, by overload protection, shows Err08 when HXXXX show value is greater than 100%.
It preferably, further include that built-in current transformer realization is measured and marked to the electric current of the various routes in device
Quasi- MODBUS-RTU communications protocol.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to compared with
Good embodiment describes the invention in detail, those skilled in the art should understand that, it can be to skill of the invention
Art scheme is modified or replaced equivalently, and without departing from the objective and range of technical solution of the present invention, should all be covered at this
In the scope of the claims of invention.
Claims (6)
1. a kind of soft starter for motor control device, it is characterised in that: it includes the microcontroller for carrying out center control to single unit system
Device；The SS (soft start) control circuit of a variety of starting control models is carried out to motor according to the control instruction of the microcontroller；It realizes
The input port module of data input；Realize the output port module of data output；It realizes and is artificially manually entered control instruction
Man-machine interaction panel；
The input port module is connect with the microcontroller input, the output end of the microcontroller with it is described defeated
The connection of exit port module；The output port module is connect with the SS (soft start) control circuit；The man-machine interaction panel
Output end connect with the input terminal of the port I/O of the microcontroller.
2. a kind of soft starter for motor control device according to claim 1, it is characterised in that: the output port module
Including connect with the SS (soft start) control circuit bypass output port, programmable relay output port, failure output terminal mouth and
DC analogue quantity output port.
3. a kind of soft starter for motor control device according to claim 1, it is characterised in that: the input port module
Including protected in control device soft start wink stopping transportation inbound port and the external control that is connect with the wink stopping transportation inbound port open
Moved end mouthful.
4. a kind of soft starter for motor control device according to claim 1, it is characterised in that: the starting control model packet
Threshold currents start-up mode, voltage ramp start-up mode, kick start-up mode, current ramp start-up mode and voltage current limliting pair is included to close
Ring start-up mode.
5. a kind of soft starter for motor control device according to claim 1, it is characterised in that: the soft starting control electric
Road includes that a breaker, a bypass contactor and one are silicon-controlled；The input terminal of the breaker is connect with three-phase electricity source, defeated
Outlet is connected with the silicon-controlled input terminal；The silicon-controlled output end is connected to motor；The bypass contactor
One end connect with the output end of the breaker, the other end is connect with the motor, realize the bypass contactor with it is described
It is silicon-controlled to be connected in parallel.
6. a kind of soft starter for motor control device according to claim 1, it is characterised in that: the man-machine interaction panel
It include starting stop key, set key, acknowledgement key, successively decrease key and display panel；The starting stop key time is in face
It is operated for starting operation, stopping operation with failure reset when plate operation is effective；The set key, which is realized, enters setting menu；
The acknowledgement key realizes the supplemental characteristic of confirmation modification；The incremental key that successively decreases realizes that parameter item or the incremental of data successively decrease
Operation；The display panel realizes the display to control device operating status and data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811557671.2A CN109412467A (en) | 2018-12-19 | 2018-12-19 | A kind of soft starter for motor control device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811557671.2A CN109412467A (en) | 2018-12-19 | 2018-12-19 | A kind of soft starter for motor control device |
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| Publication Number | Publication Date |
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| CN109412467A true CN109412467A (en) | 2019-03-01 |
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| CN201811557671.2A Pending CN109412467A (en) | 2018-12-19 | 2018-12-19 | A kind of soft starter for motor control device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117559845A (en) * | 2024-01-09 | 2024-02-13 | 广州市百福电气设备有限公司 | Starting control method and system for water pump motor |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203057039U (en) * | 2012-07-19 | 2013-07-10 | 上海上矿防爆电气(集团)有限公司 | Mining flame-proof and intrinsically safe type vacuum AC soft starter |
-
2018
- 2018-12-19 CN CN201811557671.2A patent/CN109412467A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203057039U (en) * | 2012-07-19 | 2013-07-10 | 上海上矿防爆电气(集团)有限公司 | Mining flame-proof and intrinsically safe type vacuum AC soft starter |
Non-Patent Citations (1)
| Title |
|---|
| 上传者：DAJUHYY: "PR5200软启动说明书中文版本201200806CJ", 《原创力文档HTTPS://MAX.BOOK118.COM/HTML/2017/0930/135242331.SHTM》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117559845A (en) * | 2024-01-09 | 2024-02-13 | 广州市百福电气设备有限公司 | Starting control method and system for water pump motor |
| CN117559845B (en) * | 2024-01-09 | 2024-04-26 | 广州市百福电气设备有限公司 | Starting control method and system for water pump motor |
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Application publication date: 20190301 |
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